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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label19_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 00:13:24,060 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 00:13:24,066 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 00:13:24,085 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 00:13:24,085 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 00:13:24,086 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 00:13:24,087 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 00:13:24,090 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 00:13:24,092 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 00:13:24,093 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 00:13:24,094 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 00:13:24,094 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 00:13:24,099 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 00:13:24,100 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 00:13:24,103 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 00:13:24,104 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 00:13:24,105 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 00:13:24,109 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 00:13:24,114 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 00:13:24,116 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 00:13:24,117 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 00:13:24,121 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 00:13:24,125 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-25 00:13:24,125 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-25 00:13:24,125 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-25 00:13:24,127 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-25 00:13:24,127 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-25 00:13:24,130 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-25 00:13:24,130 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-25 00:13:24,131 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-25 00:13:24,131 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-25 00:13:24,132 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-25 00:13:24,137 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 00:13:24,162 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 00:13:24,162 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 00:13:24,163 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 00:13:24,163 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 00:13:24,164 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 00:13:24,164 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 00:13:24,164 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 00:13:24,164 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 00:13:24,164 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 00:13:24,165 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 00:13:24,165 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 00:13:24,165 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 00:13:24,165 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 00:13:24,165 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 00:13:24,166 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 00:13:24,166 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 00:13:24,167 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 00:13:24,167 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 00:13:24,167 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 00:13:24,167 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 00:13:24,167 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 00:13:24,168 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 00:13:24,168 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 00:13:24,168 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 00:13:24,168 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 00:13:24,168 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 00:13:24,169 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 00:13:24,169 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 00:13:24,169 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 00:13:24,169 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 00:13:24,169 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 00:13:24,169 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 00:13:24,170 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 00:13:24,170 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 00:13:24,170 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 00:13:24,170 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 00:13:24,212 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 00:13:24,225 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 00:13:24,229 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 00:13:24,231 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 00:13:24,231 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 00:13:24,232 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label19_true-unreach-call.c [2018-10-25 00:13:24,299 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/72f55af21/0c81c482a6ae4c858dabe00505c275bb/FLAGede024632 [2018-10-25 00:13:24,933 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 00:13:24,933 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label19_true-unreach-call.c [2018-10-25 00:13:24,955 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/72f55af21/0c81c482a6ae4c858dabe00505c275bb/FLAGede024632 [2018-10-25 00:13:24,977 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/72f55af21/0c81c482a6ae4c858dabe00505c275bb [2018-10-25 00:13:24,990 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 00:13:24,991 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 00:13:24,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 00:13:24,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 00:13:24,999 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 00:13:25,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:13:24" (1/1) ... [2018-10-25 00:13:25,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d204f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:25, skipping insertion in model container [2018-10-25 00:13:25,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:13:24" (1/1) ... [2018-10-25 00:13:25,016 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 00:13:25,119 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 00:13:25,907 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:13:25,913 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 00:13:26,202 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:13:26,227 INFO L193 MainTranslator]: Completed translation [2018-10-25 00:13:26,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:26 WrapperNode [2018-10-25 00:13:26,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 00:13:26,229 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 00:13:26,229 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 00:13:26,229 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 00:13:26,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:26" (1/1) ... [2018-10-25 00:13:26,288 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:26" (1/1) ... [2018-10-25 00:13:26,513 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 00:13:26,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 00:13:26,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 00:13:26,514 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 00:13:26,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:26" (1/1) ... [2018-10-25 00:13:26,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:26" (1/1) ... [2018-10-25 00:13:26,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:26" (1/1) ... [2018-10-25 00:13:26,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:26" (1/1) ... [2018-10-25 00:13:26,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:26" (1/1) ... [2018-10-25 00:13:26,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:26" (1/1) ... [2018-10-25 00:13:26,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:26" (1/1) ... [2018-10-25 00:13:26,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 00:13:26,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 00:13:26,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 00:13:26,648 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 00:13:26,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:26" (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 [2018-10-25 00:13:26,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 00:13:26,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 00:13:26,721 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 00:13:26,721 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 00:13:26,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 00:13:26,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 00:13:26,721 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 00:13:26,722 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 00:13:31,803 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 00:13:31,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:13:31 BoogieIcfgContainer [2018-10-25 00:13:31,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 00:13:31,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 00:13:31,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 00:13:31,809 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 00:13:31,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 12:13:24" (1/3) ... [2018-10-25 00:13:31,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4489f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:13:31, skipping insertion in model container [2018-10-25 00:13:31,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:26" (2/3) ... [2018-10-25 00:13:31,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4489f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:13:31, skipping insertion in model container [2018-10-25 00:13:31,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:13:31" (3/3) ... [2018-10-25 00:13:31,813 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label19_true-unreach-call.c [2018-10-25 00:13:31,823 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 00:13:31,835 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 00:13:31,853 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 00:13:31,903 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 00:13:31,903 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 00:13:31,903 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 00:13:31,903 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 00:13:31,904 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 00:13:31,904 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 00:13:31,904 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 00:13:31,904 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 00:13:31,931 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-25 00:13:31,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-25 00:13:31,950 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:13:31,952 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:13:31,954 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:13:31,964 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:31,965 INFO L82 PathProgramCache]: Analyzing trace with hash 2122630385, now seen corresponding path program 1 times [2018-10-25 00:13:31,967 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:13:32,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:32,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:32,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:32,015 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:13:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:33,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:13:33,052 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:13:33,053 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 00:13:33,053 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:13:33,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:13:33,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:13:33,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:13:33,079 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-10-25 00:13:35,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:13:35,088 INFO L93 Difference]: Finished difference Result 855 states and 1508 transitions. [2018-10-25 00:13:35,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:13:35,090 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2018-10-25 00:13:35,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:13:35,113 INFO L225 Difference]: With dead ends: 855 [2018-10-25 00:13:35,113 INFO L226 Difference]: Without dead ends: 541 [2018-10-25 00:13:35,121 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 [2018-10-25 00:13:35,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2018-10-25 00:13:35,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 527. [2018-10-25 00:13:35,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2018-10-25 00:13:35,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 901 transitions. [2018-10-25 00:13:35,267 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 901 transitions. Word has length 194 [2018-10-25 00:13:35,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:13:35,269 INFO L481 AbstractCegarLoop]: Abstraction has 527 states and 901 transitions. [2018-10-25 00:13:35,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:13:35,269 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 901 transitions. [2018-10-25 00:13:35,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-10-25 00:13:35,279 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:13:35,279 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:13:35,280 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:13:35,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:35,280 INFO L82 PathProgramCache]: Analyzing trace with hash -618112360, now seen corresponding path program 1 times [2018-10-25 00:13:35,280 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:13:35,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:35,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:35,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:35,282 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:13:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:35,658 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-25 00:13:35,871 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:13:35,871 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:13:35,872 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 00:13:35,872 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:13:35,876 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 00:13:35,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 00:13:35,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 00:13:35,877 INFO L87 Difference]: Start difference. First operand 527 states and 901 transitions. Second operand 6 states. [2018-10-25 00:13:39,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:13:39,288 INFO L93 Difference]: Finished difference Result 1590 states and 2790 transitions. [2018-10-25 00:13:39,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-25 00:13:39,293 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 204 [2018-10-25 00:13:39,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:13:39,304 INFO L225 Difference]: With dead ends: 1590 [2018-10-25 00:13:39,305 INFO L226 Difference]: Without dead ends: 1069 [2018-10-25 00:13:39,308 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-25 00:13:39,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2018-10-25 00:13:39,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1024. [2018-10-25 00:13:39,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2018-10-25 00:13:39,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1744 transitions. [2018-10-25 00:13:39,367 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1744 transitions. Word has length 204 [2018-10-25 00:13:39,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:13:39,367 INFO L481 AbstractCegarLoop]: Abstraction has 1024 states and 1744 transitions. [2018-10-25 00:13:39,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 00:13:39,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1744 transitions. [2018-10-25 00:13:39,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-10-25 00:13:39,373 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:13:39,373 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:13:39,374 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:13:39,374 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:39,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1363104416, now seen corresponding path program 1 times [2018-10-25 00:13:39,375 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:13:39,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:39,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:39,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:39,376 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:13:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:39,574 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:13:39,575 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:13:39,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-25 00:13:39,575 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:13:39,576 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 00:13:39,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 00:13:39,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-25 00:13:39,577 INFO L87 Difference]: Start difference. First operand 1024 states and 1744 transitions. Second operand 5 states. [2018-10-25 00:13:43,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:13:43,022 INFO L93 Difference]: Finished difference Result 3166 states and 5668 transitions. [2018-10-25 00:13:43,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 00:13:43,023 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 205 [2018-10-25 00:13:43,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:13:43,044 INFO L225 Difference]: With dead ends: 3166 [2018-10-25 00:13:43,044 INFO L226 Difference]: Without dead ends: 2148 [2018-10-25 00:13:43,052 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-25 00:13:43,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2018-10-25 00:13:43,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 2105. [2018-10-25 00:13:43,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2105 states. [2018-10-25 00:13:43,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2105 states to 2105 states and 3420 transitions. [2018-10-25 00:13:43,144 INFO L78 Accepts]: Start accepts. Automaton has 2105 states and 3420 transitions. Word has length 205 [2018-10-25 00:13:43,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:13:43,144 INFO L481 AbstractCegarLoop]: Abstraction has 2105 states and 3420 transitions. [2018-10-25 00:13:43,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 00:13:43,146 INFO L276 IsEmpty]: Start isEmpty. Operand 2105 states and 3420 transitions. [2018-10-25 00:13:43,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-10-25 00:13:43,155 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:13:43,155 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:13:43,156 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:13:43,156 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:43,156 INFO L82 PathProgramCache]: Analyzing trace with hash 639671669, now seen corresponding path program 1 times [2018-10-25 00:13:43,156 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:13:43,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:43,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:43,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:43,158 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:13:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:43,541 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:13:43,541 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:13:43,541 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 00:13:43,542 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:13:43,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:13:43,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:13:43,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:13:43,544 INFO L87 Difference]: Start difference. First operand 2105 states and 3420 transitions. Second operand 3 states. [2018-10-25 00:13:45,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:13:45,383 INFO L93 Difference]: Finished difference Result 4205 states and 6860 transitions. [2018-10-25 00:13:45,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:13:45,391 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 207 [2018-10-25 00:13:45,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:13:45,410 INFO L225 Difference]: With dead ends: 4205 [2018-10-25 00:13:45,410 INFO L226 Difference]: Without dead ends: 2106 [2018-10-25 00:13:45,417 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:13:45,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2018-10-25 00:13:45,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 1941. [2018-10-25 00:13:45,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1941 states. [2018-10-25 00:13:45,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1941 states to 1941 states and 2865 transitions. [2018-10-25 00:13:45,480 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 2865 transitions. Word has length 207 [2018-10-25 00:13:45,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:13:45,482 INFO L481 AbstractCegarLoop]: Abstraction has 1941 states and 2865 transitions. [2018-10-25 00:13:45,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:13:45,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 2865 transitions. [2018-10-25 00:13:45,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-10-25 00:13:45,489 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:13:45,490 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:13:45,490 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:13:45,490 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:45,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1660323759, now seen corresponding path program 1 times [2018-10-25 00:13:45,491 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:13:45,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:45,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:45,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:45,492 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:13:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:45,809 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:13:45,809 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:13:45,809 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 00:13:45,810 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:13:45,810 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 00:13:45,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 00:13:45,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 00:13:45,811 INFO L87 Difference]: Start difference. First operand 1941 states and 2865 transitions. Second operand 4 states. [2018-10-25 00:13:48,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:13:48,891 INFO L93 Difference]: Finished difference Result 7424 states and 11507 transitions. [2018-10-25 00:13:48,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 00:13:48,891 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 209 [2018-10-25 00:13:48,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:13:48,921 INFO L225 Difference]: With dead ends: 7424 [2018-10-25 00:13:48,922 INFO L226 Difference]: Without dead ends: 5489 [2018-10-25 00:13:48,933 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 00:13:48,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5489 states. [2018-10-25 00:13:49,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5489 to 5483. [2018-10-25 00:13:49,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5483 states. [2018-10-25 00:13:49,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5483 states to 5483 states and 7840 transitions. [2018-10-25 00:13:49,075 INFO L78 Accepts]: Start accepts. Automaton has 5483 states and 7840 transitions. Word has length 209 [2018-10-25 00:13:49,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:13:49,076 INFO L481 AbstractCegarLoop]: Abstraction has 5483 states and 7840 transitions. [2018-10-25 00:13:49,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 00:13:49,076 INFO L276 IsEmpty]: Start isEmpty. Operand 5483 states and 7840 transitions. [2018-10-25 00:13:49,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-25 00:13:49,092 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:13:49,093 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:13:49,093 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:13:49,093 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:49,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1172684700, now seen corresponding path program 1 times [2018-10-25 00:13:49,094 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:13:49,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:49,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:49,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:49,095 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:13:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:49,365 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:13:49,554 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:13:49,554 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:13:49,554 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:13:49,555 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 219 with the following transitions: [2018-10-25 00:13:49,559 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1013], [1015], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:13:49,645 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:13:49,645 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:13:50,956 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:13:50,958 INFO L272 AbstractInterpreter]: Visited 195 different actions 195 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-25 00:13:51,000 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:51,000 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:13:52,219 INFO L232 lantSequenceWeakener]: Weakened 207 states. On average, predicates are now at 74.02% of their original sizes. [2018-10-25 00:13:52,219 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:13:52,598 INFO L413 sIntCurrentIteration]: We have 217 unified AI predicates [2018-10-25 00:13:52,598 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:13:52,599 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:13:52,600 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [5] total 18 [2018-10-25 00:13:52,600 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:13:52,601 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-25 00:13:52,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-25 00:13:52,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-10-25 00:13:52,602 INFO L87 Difference]: Start difference. First operand 5483 states and 7840 transitions. Second operand 15 states. [2018-10-25 00:15:07,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:15:07,533 INFO L93 Difference]: Finished difference Result 11170 states and 15965 transitions. [2018-10-25 00:15:07,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 00:15:07,533 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 218 [2018-10-25 00:15:07,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:15:07,558 INFO L225 Difference]: With dead ends: 11170 [2018-10-25 00:15:07,558 INFO L226 Difference]: Without dead ends: 5693 [2018-10-25 00:15:07,573 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 218 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2018-10-25 00:15:07,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5693 states. [2018-10-25 00:15:07,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5693 to 5691. [2018-10-25 00:15:07,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5691 states. [2018-10-25 00:15:07,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5691 states to 5691 states and 8058 transitions. [2018-10-25 00:15:07,712 INFO L78 Accepts]: Start accepts. Automaton has 5691 states and 8058 transitions. Word has length 218 [2018-10-25 00:15:07,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:15:07,712 INFO L481 AbstractCegarLoop]: Abstraction has 5691 states and 8058 transitions. [2018-10-25 00:15:07,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-25 00:15:07,712 INFO L276 IsEmpty]: Start isEmpty. Operand 5691 states and 8058 transitions. [2018-10-25 00:15:07,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-10-25 00:15:07,729 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:15:07,729 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:15:07,730 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:15:07,730 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:15:07,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1063849999, now seen corresponding path program 1 times [2018-10-25 00:15:07,730 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:15:07,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:15:07,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:15:07,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:15:07,732 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:15:07,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:15:08,042 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:15:08,043 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:15:08,043 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:15:08,043 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 228 with the following transitions: [2018-10-25 00:15:08,045 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1013], [1015], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:15:08,062 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:15:08,063 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:15:12,821 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:15:12,821 INFO L272 AbstractInterpreter]: Visited 201 different actions 597 times. Merged at 7 different actions 19 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-25 00:15:12,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:15:12,830 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:15:12,830 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:15:12,830 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 00:15:12,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:15:12,841 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:15:13,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:15:13,064 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:15:13,443 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:15:13,443 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:15:13,715 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:15:13,739 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:15:13,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2018-10-25 00:15:13,739 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:15:13,740 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-25 00:15:13,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-25 00:15:13,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-25 00:15:13,740 INFO L87 Difference]: Start difference. First operand 5691 states and 8058 transitions. Second operand 8 states. [2018-10-25 00:15:20,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:15:20,650 INFO L93 Difference]: Finished difference Result 21745 states and 37333 transitions. [2018-10-25 00:15:20,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-25 00:15:20,653 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 227 [2018-10-25 00:15:20,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:15:20,778 INFO L225 Difference]: With dead ends: 21745 [2018-10-25 00:15:20,779 INFO L226 Difference]: Without dead ends: 16268 [2018-10-25 00:15:20,834 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2018-10-25 00:15:20,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16268 states. [2018-10-25 00:15:21,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16268 to 15912. [2018-10-25 00:15:21,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15912 states. [2018-10-25 00:15:21,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15912 states to 15912 states and 23715 transitions. [2018-10-25 00:15:21,960 INFO L78 Accepts]: Start accepts. Automaton has 15912 states and 23715 transitions. Word has length 227 [2018-10-25 00:15:21,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:15:21,961 INFO L481 AbstractCegarLoop]: Abstraction has 15912 states and 23715 transitions. [2018-10-25 00:15:21,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-25 00:15:21,961 INFO L276 IsEmpty]: Start isEmpty. Operand 15912 states and 23715 transitions. [2018-10-25 00:15:22,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-10-25 00:15:22,034 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:15:22,034 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:15:22,035 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:15:22,035 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:15:22,035 INFO L82 PathProgramCache]: Analyzing trace with hash 631853219, now seen corresponding path program 1 times [2018-10-25 00:15:22,035 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:15:22,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:15:22,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:15:22,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:15:22,039 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:15:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:15:23,100 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 47 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:15:23,100 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:15:23,100 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:15:23,101 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 240 with the following transitions: [2018-10-25 00:15:23,101 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [115], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1013], [1015], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:15:23,110 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:15:23,110 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:15:24,672 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:15:24,672 INFO L272 AbstractInterpreter]: Visited 198 different actions 390 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:15:24,678 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:15:24,678 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:15:26,054 INFO L232 lantSequenceWeakener]: Weakened 236 states. On average, predicates are now at 73.57% of their original sizes. [2018-10-25 00:15:26,054 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:15:26,428 INFO L413 sIntCurrentIteration]: We have 238 unified AI predicates [2018-10-25 00:15:26,428 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:15:26,428 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:15:26,428 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [10] total 28 [2018-10-25 00:15:26,428 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:15:26,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-25 00:15:26,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-25 00:15:26,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2018-10-25 00:15:26,430 INFO L87 Difference]: Start difference. First operand 15912 states and 23715 transitions. Second operand 20 states. [2018-10-25 00:15:58,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:15:58,754 INFO L93 Difference]: Finished difference Result 31826 states and 47524 transitions. [2018-10-25 00:15:58,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-25 00:15:58,754 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 239 [2018-10-25 00:15:58,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:15:58,837 INFO L225 Difference]: With dead ends: 31826 [2018-10-25 00:15:58,837 INFO L226 Difference]: Without dead ends: 16128 [2018-10-25 00:15:58,886 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 247 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=178, Invalid=634, Unknown=0, NotChecked=0, Total=812 [2018-10-25 00:15:58,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16128 states. [2018-10-25 00:15:59,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16128 to 16125. [2018-10-25 00:15:59,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16125 states. [2018-10-25 00:15:59,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16125 states to 16125 states and 23945 transitions. [2018-10-25 00:15:59,349 INFO L78 Accepts]: Start accepts. Automaton has 16125 states and 23945 transitions. Word has length 239 [2018-10-25 00:15:59,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:15:59,349 INFO L481 AbstractCegarLoop]: Abstraction has 16125 states and 23945 transitions. [2018-10-25 00:15:59,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-25 00:15:59,349 INFO L276 IsEmpty]: Start isEmpty. Operand 16125 states and 23945 transitions. [2018-10-25 00:15:59,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-10-25 00:15:59,399 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:15:59,399 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:15:59,400 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:15:59,400 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:15:59,400 INFO L82 PathProgramCache]: Analyzing trace with hash -132533247, now seen corresponding path program 1 times [2018-10-25 00:15:59,400 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:15:59,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:15:59,401 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:15:59,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:15:59,402 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:15:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:15:59,900 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 70 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-25 00:15:59,901 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:15:59,901 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:15:59,901 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 253 with the following transitions: [2018-10-25 00:15:59,902 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [68], [73], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1013], [1015], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:15:59,910 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:15:59,911 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:16:04,304 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:16:04,305 INFO L272 AbstractInterpreter]: Visited 202 different actions 600 times. Merged at 7 different actions 19 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-25 00:16:04,310 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:16:04,310 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:16:04,310 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:16:04,310 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 00:16:04,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:16:04,318 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:16:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:16:04,523 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:16:04,642 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-25 00:16:04,642 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:16:04,869 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-25 00:16:04,892 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:16:04,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-25 00:16:04,892 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:16:04,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 00:16:04,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 00:16:04,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-10-25 00:16:04,895 INFO L87 Difference]: Start difference. First operand 16125 states and 23945 transitions. Second operand 9 states. [2018-10-25 00:16:10,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:16:10,289 INFO L93 Difference]: Finished difference Result 62361 states and 102960 transitions. [2018-10-25 00:16:10,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-25 00:16:10,290 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 252 [2018-10-25 00:16:10,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:16:10,551 INFO L225 Difference]: With dead ends: 62361 [2018-10-25 00:16:10,551 INFO L226 Difference]: Without dead ends: 46663 [2018-10-25 00:16:10,622 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 504 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2018-10-25 00:16:10,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46663 states. [2018-10-25 00:16:12,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46663 to 46084. [2018-10-25 00:16:12,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46084 states. [2018-10-25 00:16:12,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46084 states to 46084 states and 69987 transitions. [2018-10-25 00:16:12,216 INFO L78 Accepts]: Start accepts. Automaton has 46084 states and 69987 transitions. Word has length 252 [2018-10-25 00:16:12,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:16:12,216 INFO L481 AbstractCegarLoop]: Abstraction has 46084 states and 69987 transitions. [2018-10-25 00:16:12,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 00:16:12,217 INFO L276 IsEmpty]: Start isEmpty. Operand 46084 states and 69987 transitions. [2018-10-25 00:16:12,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-25 00:16:12,266 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:16:12,266 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:16:12,267 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:16:12,267 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:16:12,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1547866221, now seen corresponding path program 1 times [2018-10-25 00:16:12,267 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:16:12,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:16:12,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:16:12,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:16:12,269 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:16:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:16:12,773 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:16:12,773 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:16:12,773 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:16:12,773 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 252 with the following transitions: [2018-10-25 00:16:12,774 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1013], [1015], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:16:12,781 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:16:12,782 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:16:17,692 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:16:17,693 INFO L272 AbstractInterpreter]: Visited 199 different actions 595 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-25 00:16:17,698 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:16:17,698 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:16:17,698 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:16:17,698 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 00:16:17,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:16:17,706 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:16:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:16:17,895 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:16:18,040 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:16:18,040 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:16:18,437 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:16:18,471 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:16:18,472 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2018-10-25 00:16:18,472 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:16:18,473 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 00:16:18,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 00:16:18,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-25 00:16:18,474 INFO L87 Difference]: Start difference. First operand 46084 states and 69987 transitions. Second operand 6 states. [2018-10-25 00:16:21,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:16:21,916 INFO L93 Difference]: Finished difference Result 89481 states and 137729 transitions. [2018-10-25 00:16:21,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-25 00:16:21,916 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 251 [2018-10-25 00:16:21,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:16:22,152 INFO L225 Difference]: With dead ends: 89481 [2018-10-25 00:16:22,152 INFO L226 Difference]: Without dead ends: 43834 [2018-10-25 00:16:22,334 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 503 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-10-25 00:16:22,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43834 states. [2018-10-25 00:16:24,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43834 to 43123. [2018-10-25 00:16:24,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43123 states. [2018-10-25 00:16:24,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43123 states to 43123 states and 61097 transitions. [2018-10-25 00:16:24,335 INFO L78 Accepts]: Start accepts. Automaton has 43123 states and 61097 transitions. Word has length 251 [2018-10-25 00:16:24,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:16:24,335 INFO L481 AbstractCegarLoop]: Abstraction has 43123 states and 61097 transitions. [2018-10-25 00:16:24,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 00:16:24,335 INFO L276 IsEmpty]: Start isEmpty. Operand 43123 states and 61097 transitions. [2018-10-25 00:16:24,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-10-25 00:16:24,391 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:16:24,391 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:16:24,392 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:16:24,392 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:16:24,392 INFO L82 PathProgramCache]: Analyzing trace with hash -801272971, now seen corresponding path program 1 times [2018-10-25 00:16:24,392 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:16:24,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:16:24,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:16:24,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:16:24,396 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:16:24,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:16:24,889 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 79 proven. 14 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-25 00:16:24,889 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:16:24,889 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:16:24,889 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 265 with the following transitions: [2018-10-25 00:16:24,890 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [36], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [115], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1013], [1015], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:16:24,897 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:16:24,898 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:16:27,138 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:16:27,138 INFO L272 AbstractInterpreter]: Visited 200 different actions 392 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:16:27,146 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:16:27,146 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:16:27,146 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:16:27,146 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 00:16:27,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:16:27,155 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:16:27,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:16:27,370 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:16:27,571 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 68 proven. 28 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-10-25 00:16:27,571 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:16:27,691 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-10-25 00:16:27,713 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:16:27,713 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2018-10-25 00:16:27,713 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:16:27,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-25 00:16:27,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-25 00:16:27,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-10-25 00:16:27,714 INFO L87 Difference]: Start difference. First operand 43123 states and 61097 transitions. Second operand 8 states. [2018-10-25 00:16:36,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:16:36,515 INFO L93 Difference]: Finished difference Result 137420 states and 220911 transitions. [2018-10-25 00:16:36,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-25 00:16:36,515 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 264 [2018-10-25 00:16:36,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:16:37,140 INFO L225 Difference]: With dead ends: 137420 [2018-10-25 00:16:37,140 INFO L226 Difference]: Without dead ends: 94724 [2018-10-25 00:16:37,377 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 555 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=317, Invalid=1089, Unknown=0, NotChecked=0, Total=1406 [2018-10-25 00:16:37,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94724 states. [2018-10-25 00:16:39,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94724 to 90563. [2018-10-25 00:16:39,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90563 states. [2018-10-25 00:16:40,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90563 states to 90563 states and 120527 transitions. [2018-10-25 00:16:40,269 INFO L78 Accepts]: Start accepts. Automaton has 90563 states and 120527 transitions. Word has length 264 [2018-10-25 00:16:40,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:16:40,269 INFO L481 AbstractCegarLoop]: Abstraction has 90563 states and 120527 transitions. [2018-10-25 00:16:40,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-25 00:16:40,270 INFO L276 IsEmpty]: Start isEmpty. Operand 90563 states and 120527 transitions. [2018-10-25 00:16:40,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-10-25 00:16:40,350 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:16:40,351 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:16:40,351 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:16:40,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:16:40,351 INFO L82 PathProgramCache]: Analyzing trace with hash 60933178, now seen corresponding path program 1 times [2018-10-25 00:16:40,351 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:16:40,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:16:40,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:16:40,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:16:40,352 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:16:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:16:40,820 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:16:40,820 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:16:40,820 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:16:40,821 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 307 with the following transitions: [2018-10-25 00:16:40,821 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1013], [1015], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:16:40,827 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:16:40,828 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:16:42,146 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:16:42,146 INFO L272 AbstractInterpreter]: Visited 198 different actions 390 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:16:42,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:16:42,157 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:16:45,329 INFO L232 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 79.28% of their original sizes. [2018-10-25 00:16:45,329 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:16:59,267 INFO L413 sIntCurrentIteration]: We have 305 unified AI predicates [2018-10-25 00:16:59,267 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:16:59,267 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:16:59,268 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [5] total 18 [2018-10-25 00:16:59,268 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:16:59,268 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-25 00:16:59,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-25 00:16:59,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2018-10-25 00:16:59,269 INFO L87 Difference]: Start difference. First operand 90563 states and 120527 transitions. Second operand 15 states. Received shutdown request... [2018-10-25 00:17:13,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-25 00:17:13,055 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 00:17:13,060 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 00:17:13,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 12:17:13 BoogieIcfgContainer [2018-10-25 00:17:13,061 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 00:17:13,061 INFO L168 Benchmark]: Toolchain (without parser) took 228070.97 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-25 00:17:13,063 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-25 00:17:13,063 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1235.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-25 00:17:13,064 INFO L168 Benchmark]: Boogie Procedure Inliner took 284.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 764.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -890.3 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-25 00:17:13,065 INFO L168 Benchmark]: Boogie Preprocessor took 133.51 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-10-25 00:17:13,066 INFO L168 Benchmark]: RCFGBuilder took 5156.21 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 257.0 MB). Peak memory consumption was 257.0 MB. Max. memory is 7.1 GB. [2018-10-25 00:17:13,066 INFO L168 Benchmark]: TraceAbstraction took 221255.77 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.5 GB). Free memory was 2.0 GB in the beginning and 2.5 GB in the end (delta: -545.9 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-25 00:17:13,071 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1235.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 284.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 764.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -890.3 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.51 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5156.21 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 257.0 MB). Peak memory consumption was 257.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 221255.77 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.5 GB). Free memory was 2.0 GB in the beginning and 2.5 GB in the end (delta: -545.9 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1596]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1596). Cancelled while BasicCegarLoop was constructing difference of abstraction (90563states) and FLOYD_HOARE automaton (currently 8 states, 15 states before enhancement),while ReachableStatesComputation was computing reachable states (177 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 221.1s OverallTime, 12 OverallIterations, 4 TraceHistogramMax, 161.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2642 SDtfs, 13717 SDslu, 3465 SDs, 0 SdLazy, 24561 SolverSat, 3598 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 118.2s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 2899 GetRequests, 2547 SyntacticMatches, 204 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1892 ImplicationChecksByTransitivity, 18.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90563occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 20.7s AbstIntTime, 7 AbstIntIterations, 3 AbstIntStrong, 0.9992309611555751 AbsIntWeakeningRatio, 0.2578947368421053 AbsIntAvgWeakeningVarsNumRemoved, 17.635526315789473 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 8.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 6085 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 3770 NumberOfCodeBlocks, 3770 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 4744 ConstructedInterpolants, 0 QuantifiedInterpolants, 2129243 SizeOfPredicates, 7 NumberOfNonLiveVariables, 4576 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 20 InterpolantComputations, 5 PerfectInterpolantSequences, 1063/1139 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown