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_label24_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 00:13:39,069 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 00:13:39,071 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 00:13:39,084 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 00:13:39,084 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 00:13:39,085 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 00:13:39,087 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 00:13:39,088 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 00:13:39,090 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 00:13:39,091 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 00:13:39,092 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 00:13:39,092 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 00:13:39,093 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 00:13:39,094 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 00:13:39,095 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 00:13:39,096 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 00:13:39,097 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 00:13:39,099 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 00:13:39,101 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 00:13:39,104 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 00:13:39,105 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 00:13:39,113 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 00:13:39,119 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-25 00:13:39,119 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-25 00:13:39,119 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-25 00:13:39,120 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-25 00:13:39,121 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-25 00:13:39,125 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-25 00:13:39,126 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-25 00:13:39,129 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-25 00:13:39,129 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-25 00:13:39,130 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-25 00:13:39,134 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 00:13:39,165 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 00:13:39,166 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 00:13:39,166 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 00:13:39,167 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 00:13:39,167 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 00:13:39,167 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 00:13:39,167 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 00:13:39,167 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 00:13:39,170 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 00:13:39,171 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 00:13:39,171 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 00:13:39,171 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 00:13:39,171 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 00:13:39,171 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 00:13:39,172 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 00:13:39,173 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 00:13:39,173 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 00:13:39,173 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 00:13:39,173 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 00:13:39,173 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 00:13:39,174 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 00:13:39,175 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 00:13:39,176 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 00:13:39,176 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 00:13:39,176 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 00:13:39,176 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 00:13:39,177 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 00:13:39,178 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 00:13:39,178 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 00:13:39,178 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 00:13:39,178 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 00:13:39,179 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 00:13:39,179 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 00:13:39,179 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 00:13:39,179 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 00:13:39,179 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 00:13:39,233 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 00:13:39,250 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 00:13:39,254 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 00:13:39,255 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 00:13:39,256 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 00:13:39,257 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label24_true-unreach-call.c [2018-10-25 00:13:39,325 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/83979503f/a4f35c1e9286467bbe676108cb5c4b47/FLAGbbb3ccdfa [2018-10-25 00:13:40,087 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 00:13:40,090 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label24_true-unreach-call.c [2018-10-25 00:13:40,111 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/83979503f/a4f35c1e9286467bbe676108cb5c4b47/FLAGbbb3ccdfa [2018-10-25 00:13:40,133 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/83979503f/a4f35c1e9286467bbe676108cb5c4b47 [2018-10-25 00:13:40,147 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 00:13:40,148 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 00:13:40,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 00:13:40,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 00:13:40,154 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 00:13:40,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:13:40" (1/1) ... [2018-10-25 00:13:40,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47b2a8bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:40, skipping insertion in model container [2018-10-25 00:13:40,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:13:40" (1/1) ... [2018-10-25 00:13:40,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 00:13:40,249 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 00:13:40,959 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:13:40,966 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 00:13:41,334 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:13:41,358 INFO L193 MainTranslator]: Completed translation [2018-10-25 00:13:41,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:41 WrapperNode [2018-10-25 00:13:41,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 00:13:41,360 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 00:13:41,360 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 00:13:41,360 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 00:13:41,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:41" (1/1) ... [2018-10-25 00:13:41,417 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:41" (1/1) ... [2018-10-25 00:13:41,656 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 00:13:41,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 00:13:41,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 00:13:41,658 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 00:13:41,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:41" (1/1) ... [2018-10-25 00:13:41,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:41" (1/1) ... [2018-10-25 00:13:41,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:41" (1/1) ... [2018-10-25 00:13:41,687 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:41" (1/1) ... [2018-10-25 00:13:41,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:41" (1/1) ... [2018-10-25 00:13:41,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:41" (1/1) ... [2018-10-25 00:13:41,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:41" (1/1) ... [2018-10-25 00:13:41,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 00:13:41,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 00:13:41,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 00:13:41,839 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 00:13:41,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:41" (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 00:13:41,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 00:13:41,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 00:13:41,909 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 00:13:41,910 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 00:13:41,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 00:13:41,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 00:13:41,910 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 00:13:41,911 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 00:13:46,389 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 00:13:46,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:13:46 BoogieIcfgContainer [2018-10-25 00:13:46,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 00:13:46,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 00:13:46,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 00:13:46,401 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 00:13:46,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 12:13:40" (1/3) ... [2018-10-25 00:13:46,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24462dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:13:46, skipping insertion in model container [2018-10-25 00:13:46,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:41" (2/3) ... [2018-10-25 00:13:46,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24462dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:13:46, skipping insertion in model container [2018-10-25 00:13:46,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:13:46" (3/3) ... [2018-10-25 00:13:46,407 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label24_true-unreach-call.c [2018-10-25 00:13:46,417 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 00:13:46,435 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 00:13:46,455 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 00:13:46,509 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 00:13:46,509 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 00:13:46,509 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 00:13:46,510 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 00:13:46,510 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 00:13:46,510 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 00:13:46,510 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 00:13:46,510 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 00:13:46,549 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-25 00:13:46,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-25 00:13:46,571 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:13:46,573 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, 1, 1, 1, 1] [2018-10-25 00:13:46,575 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:13:46,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:46,583 INFO L82 PathProgramCache]: Analyzing trace with hash 2097974209, now seen corresponding path program 1 times [2018-10-25 00:13:46,585 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:13:46,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:46,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:46,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:46,648 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:13:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:47,583 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:13:47,717 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 00:13:47,719 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:13:47,720 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 00:13:47,720 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:13:47,727 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:13:47,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:13:47,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:13:47,747 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-10-25 00:13:49,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:13:49,797 INFO L93 Difference]: Finished difference Result 844 states and 1489 transitions. [2018-10-25 00:13:49,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:13:49,799 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 198 [2018-10-25 00:13:49,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:13:49,824 INFO L225 Difference]: With dead ends: 844 [2018-10-25 00:13:49,824 INFO L226 Difference]: Without dead ends: 530 [2018-10-25 00:13:49,833 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 00:13:49,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2018-10-25 00:13:49,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 525. [2018-10-25 00:13:49,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2018-10-25 00:13:49,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 865 transitions. [2018-10-25 00:13:49,946 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 865 transitions. Word has length 198 [2018-10-25 00:13:49,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:13:49,947 INFO L481 AbstractCegarLoop]: Abstraction has 525 states and 865 transitions. [2018-10-25 00:13:49,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:13:49,952 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 865 transitions. [2018-10-25 00:13:49,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-10-25 00:13:49,968 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:13:49,969 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, 1, 1, 1, 1] [2018-10-25 00:13:49,969 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:13:49,975 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:49,975 INFO L82 PathProgramCache]: Analyzing trace with hash -901742011, now seen corresponding path program 1 times [2018-10-25 00:13:49,975 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:13:49,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:49,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:49,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:49,980 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:13:50,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:50,510 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 00:13:50,510 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:13:50,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 00:13:50,511 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:13:50,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:13:50,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:13:50,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:13:50,517 INFO L87 Difference]: Start difference. First operand 525 states and 865 transitions. Second operand 3 states. [2018-10-25 00:13:52,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:13:52,608 INFO L93 Difference]: Finished difference Result 1473 states and 2495 transitions. [2018-10-25 00:13:52,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:13:52,608 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 211 [2018-10-25 00:13:52,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:13:52,630 INFO L225 Difference]: With dead ends: 1473 [2018-10-25 00:13:52,631 INFO L226 Difference]: Without dead ends: 954 [2018-10-25 00:13:52,642 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 00:13:52,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2018-10-25 00:13:52,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 953. [2018-10-25 00:13:52,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 953 states. [2018-10-25 00:13:52,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1483 transitions. [2018-10-25 00:13:52,698 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1483 transitions. Word has length 211 [2018-10-25 00:13:52,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:13:52,699 INFO L481 AbstractCegarLoop]: Abstraction has 953 states and 1483 transitions. [2018-10-25 00:13:52,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:13:52,699 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1483 transitions. [2018-10-25 00:13:52,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-10-25 00:13:52,707 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:13:52,709 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, 1, 1, 1, 1] [2018-10-25 00:13:52,709 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:13:52,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:52,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1723298015, now seen corresponding path program 1 times [2018-10-25 00:13:52,710 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:13:52,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:52,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:52,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:52,711 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:13:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:53,007 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 00:13:53,008 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:13:53,008 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 00:13:53,008 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:13:53,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:13:53,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:13:53,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:13:53,010 INFO L87 Difference]: Start difference. First operand 953 states and 1483 transitions. Second operand 3 states. [2018-10-25 00:13:55,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:13:55,925 INFO L93 Difference]: Finished difference Result 2750 states and 4390 transitions. [2018-10-25 00:13:55,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:13:55,926 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 213 [2018-10-25 00:13:55,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:13:55,939 INFO L225 Difference]: With dead ends: 2750 [2018-10-25 00:13:55,939 INFO L226 Difference]: Without dead ends: 1803 [2018-10-25 00:13:55,945 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 00:13:55,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2018-10-25 00:13:56,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 1786. [2018-10-25 00:13:56,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1786 states. [2018-10-25 00:13:56,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1786 states to 1786 states and 2741 transitions. [2018-10-25 00:13:56,013 INFO L78 Accepts]: Start accepts. Automaton has 1786 states and 2741 transitions. Word has length 213 [2018-10-25 00:13:56,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:13:56,013 INFO L481 AbstractCegarLoop]: Abstraction has 1786 states and 2741 transitions. [2018-10-25 00:13:56,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:13:56,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1786 states and 2741 transitions. [2018-10-25 00:13:56,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-25 00:13:56,023 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:13:56,023 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:13:56,023 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:13:56,024 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:56,024 INFO L82 PathProgramCache]: Analyzing trace with hash -989729704, now seen corresponding path program 1 times [2018-10-25 00:13:56,024 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:13:56,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:56,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:56,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:56,026 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:13:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:56,294 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-25 00:13:56,445 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:13:56,446 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:13:56,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 00:13:56,446 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:13:56,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 00:13:56,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 00:13:56,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 00:13:56,448 INFO L87 Difference]: Start difference. First operand 1786 states and 2741 transitions. Second operand 6 states. [2018-10-25 00:13:59,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:13:59,842 INFO L93 Difference]: Finished difference Result 5463 states and 9150 transitions. [2018-10-25 00:13:59,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-25 00:13:59,843 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 216 [2018-10-25 00:13:59,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:13:59,877 INFO L225 Difference]: With dead ends: 5463 [2018-10-25 00:13:59,878 INFO L226 Difference]: Without dead ends: 3683 [2018-10-25 00:13:59,887 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-25 00:13:59,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3683 states. [2018-10-25 00:14:00,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3683 to 3579. [2018-10-25 00:14:00,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3579 states. [2018-10-25 00:14:00,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3579 states to 3579 states and 5617 transitions. [2018-10-25 00:14:00,046 INFO L78 Accepts]: Start accepts. Automaton has 3579 states and 5617 transitions. Word has length 216 [2018-10-25 00:14:00,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:14:00,046 INFO L481 AbstractCegarLoop]: Abstraction has 3579 states and 5617 transitions. [2018-10-25 00:14:00,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 00:14:00,047 INFO L276 IsEmpty]: Start isEmpty. Operand 3579 states and 5617 transitions. [2018-10-25 00:14:00,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-10-25 00:14:00,064 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:14:00,064 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-25 00:14:00,065 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:14:00,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:14:00,065 INFO L82 PathProgramCache]: Analyzing trace with hash -381167688, now seen corresponding path program 1 times [2018-10-25 00:14:00,065 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:14:00,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:14:00,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:14:00,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:14:00,067 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:14:00,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:14:00,316 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:14:00,317 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:14:00,317 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:14:00,318 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 232 with the following transitions: [2018-10-25 00:14:00,321 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [36], [37], [41], [45], [48], [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], [1017], [1025], [1033], [1041], [1045], [1047], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:14:00,408 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:14:00,409 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:14:01,636 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:14:01,638 INFO L272 AbstractInterpreter]: Visited 199 different actions 199 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-25 00:14:01,670 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:14:01,670 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:14:02,839 INFO L232 lantSequenceWeakener]: Weakened 222 states. On average, predicates are now at 74.09% of their original sizes. [2018-10-25 00:14:02,840 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:14:03,251 INFO L413 sIntCurrentIteration]: We have 230 unified AI predicates [2018-10-25 00:14:03,251 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:14:03,252 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:14:03,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-10-25 00:14:03,253 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:14:03,254 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-25 00:14:03,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-25 00:14:03,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-10-25 00:14:03,254 INFO L87 Difference]: Start difference. First operand 3579 states and 5617 transitions. Second operand 13 states. [2018-10-25 00:15:09,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:15:09,072 INFO L93 Difference]: Finished difference Result 7362 states and 11579 transitions. [2018-10-25 00:15:09,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 00:15:09,073 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 231 [2018-10-25 00:15:09,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:15:09,091 INFO L225 Difference]: With dead ends: 7362 [2018-10-25 00:15:09,091 INFO L226 Difference]: Without dead ends: 3789 [2018-10-25 00:15:09,104 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 231 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2018-10-25 00:15:09,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3789 states. [2018-10-25 00:15:09,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3789 to 3787. [2018-10-25 00:15:09,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3787 states. [2018-10-25 00:15:09,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3787 states to 3787 states and 5835 transitions. [2018-10-25 00:15:09,213 INFO L78 Accepts]: Start accepts. Automaton has 3787 states and 5835 transitions. Word has length 231 [2018-10-25 00:15:09,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:15:09,213 INFO L481 AbstractCegarLoop]: Abstraction has 3787 states and 5835 transitions. [2018-10-25 00:15:09,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-25 00:15:09,213 INFO L276 IsEmpty]: Start isEmpty. Operand 3787 states and 5835 transitions. [2018-10-25 00:15:09,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-10-25 00:15:09,230 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:15:09,231 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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 00:15:09,231 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:15:09,231 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:15:09,232 INFO L82 PathProgramCache]: Analyzing trace with hash -110227371, now seen corresponding path program 1 times [2018-10-25 00:15:09,232 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:15:09,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:15:09,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:15:09,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:15:09,233 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:15:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:15:09,518 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:15:09,773 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 51 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:15:09,774 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:15:09,774 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:15:09,774 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 244 with the following transitions: [2018-10-25 00:15:09,775 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [36], [37], [41], [45], [48], [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], [1017], [1025], [1033], [1041], [1045], [1047], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:15:09,788 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:15:09,788 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:15:10,902 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:15:10,902 INFO L272 AbstractInterpreter]: Visited 203 different actions 400 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 00:15:10,913 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:15:10,913 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:15:12,294 INFO L232 lantSequenceWeakener]: Weakened 240 states. On average, predicates are now at 73.89% of their original sizes. [2018-10-25 00:15:12,295 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:15:12,713 INFO L413 sIntCurrentIteration]: We have 242 unified AI predicates [2018-10-25 00:15:12,714 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:15:12,714 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:15:12,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [10] total 28 [2018-10-25 00:15:12,714 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:15:12,715 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-25 00:15:12,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-25 00:15:12,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2018-10-25 00:15:12,716 INFO L87 Difference]: Start difference. First operand 3787 states and 5835 transitions. Second operand 20 states. [2018-10-25 00:16:49,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:16:49,112 INFO L93 Difference]: Finished difference Result 7574 states and 11803 transitions. [2018-10-25 00:16:49,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 00:16:49,112 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 243 [2018-10-25 00:16:49,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:16:49,132 INFO L225 Difference]: With dead ends: 7574 [2018-10-25 00:16:49,132 INFO L226 Difference]: Without dead ends: 4001 [2018-10-25 00:16:49,144 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 251 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=180, Invalid=632, Unknown=0, NotChecked=0, Total=812 [2018-10-25 00:16:49,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4001 states. [2018-10-25 00:16:49,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4001 to 3998. [2018-10-25 00:16:49,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3998 states. [2018-10-25 00:16:49,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 6063 transitions. [2018-10-25 00:16:49,251 INFO L78 Accepts]: Start accepts. Automaton has 3998 states and 6063 transitions. Word has length 243 [2018-10-25 00:16:49,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:16:49,251 INFO L481 AbstractCegarLoop]: Abstraction has 3998 states and 6063 transitions. [2018-10-25 00:16:49,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-25 00:16:49,252 INFO L276 IsEmpty]: Start isEmpty. Operand 3998 states and 6063 transitions. [2018-10-25 00:16:49,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-10-25 00:16:49,269 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:16:49,269 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-25 00:16:49,270 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:16:49,270 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:16:49,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1571694760, now seen corresponding path program 1 times [2018-10-25 00:16:49,270 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:16:49,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:16:49,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:16:49,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:16:49,272 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:16:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:16:49,601 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 52 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-10-25 00:16:49,601 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:16:49,602 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:16:49,602 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 250 with the following transitions: [2018-10-25 00:16:49,602 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [48], [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], [1017], [1025], [1033], [1041], [1045], [1047], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:16:49,611 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:16:49,611 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:16:53,976 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:16:53,976 INFO L272 AbstractInterpreter]: Visited 206 different actions 612 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 00:16:53,986 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:16:53,987 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:16:53,987 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:16:53,987 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 00:16:53,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:16:53,998 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:16:54,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:16:54,258 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:16:54,581 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-10-25 00:16:54,582 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:16:55,467 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 52 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-10-25 00:16:55,489 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:16:55,490 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2018-10-25 00:16:55,490 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:16:55,490 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-25 00:16:55,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-25 00:16:55,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-25 00:16:55,492 INFO L87 Difference]: Start difference. First operand 3998 states and 6063 transitions. Second operand 8 states. [2018-10-25 00:17:00,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:17:00,590 INFO L93 Difference]: Finished difference Result 14868 states and 28630 transitions. [2018-10-25 00:17:00,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-25 00:17:00,592 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 249 [2018-10-25 00:17:00,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:17:00,699 INFO L225 Difference]: With dead ends: 14868 [2018-10-25 00:17:00,700 INFO L226 Difference]: Without dead ends: 11295 [2018-10-25 00:17:00,752 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2018-10-25 00:17:00,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11295 states. [2018-10-25 00:17:01,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11295 to 11053. [2018-10-25 00:17:01,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11053 states. [2018-10-25 00:17:01,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11053 states to 11053 states and 18095 transitions. [2018-10-25 00:17:01,235 INFO L78 Accepts]: Start accepts. Automaton has 11053 states and 18095 transitions. Word has length 249 [2018-10-25 00:17:01,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:17:01,235 INFO L481 AbstractCegarLoop]: Abstraction has 11053 states and 18095 transitions. [2018-10-25 00:17:01,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-25 00:17:01,235 INFO L276 IsEmpty]: Start isEmpty. Operand 11053 states and 18095 transitions. [2018-10-25 00:17:01,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-10-25 00:17:01,290 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:17:01,290 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2018-10-25 00:17:01,291 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:17:01,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:01,291 INFO L82 PathProgramCache]: Analyzing trace with hash 600539593, now seen corresponding path program 1 times [2018-10-25 00:17:01,292 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:17:01,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:01,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:17:01,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:01,293 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:17:01,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:17:01,850 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-25 00:17:02,052 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 64 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-10-25 00:17:02,053 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:17:02,053 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:17:02,053 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 254 with the following transitions: [2018-10-25 00:17:02,054 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [36], [37], [41], [45], [48], [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], [1017], [1025], [1033], [1041], [1045], [1047], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:17:02,066 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:17:02,066 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:17:05,917 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:17:05,917 INFO L272 AbstractInterpreter]: Visited 204 different actions 400 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 00:17:05,957 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:05,957 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:17:05,957 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:17:05,958 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 00:17:05,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:17:05,975 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:17:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:17:06,191 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:17:06,686 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 80 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-25 00:17:06,686 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:17:06,865 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 80 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-25 00:17:07,223 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:17:07,223 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-25 00:17:07,224 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:17:07,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 00:17:07,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 00:17:07,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-10-25 00:17:07,225 INFO L87 Difference]: Start difference. First operand 11053 states and 18095 transitions. Second operand 9 states. [2018-10-25 00:17:10,427 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2018-10-25 00:17:17,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:17:17,083 INFO L93 Difference]: Finished difference Result 44386 states and 79660 transitions. [2018-10-25 00:17:17,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-25 00:17:17,083 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 253 [2018-10-25 00:17:17,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:17:17,313 INFO L225 Difference]: With dead ends: 44386 [2018-10-25 00:17:17,313 INFO L226 Difference]: Without dead ends: 33758 [2018-10-25 00:17:17,415 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 544 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=605, Invalid=2365, Unknown=0, NotChecked=0, Total=2970 [2018-10-25 00:17:17,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33758 states. [2018-10-25 00:17:18,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33758 to 31748. [2018-10-25 00:17:18,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31748 states. [2018-10-25 00:17:18,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31748 states to 31748 states and 47564 transitions. [2018-10-25 00:17:18,750 INFO L78 Accepts]: Start accepts. Automaton has 31748 states and 47564 transitions. Word has length 253 [2018-10-25 00:17:18,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:17:18,750 INFO L481 AbstractCegarLoop]: Abstraction has 31748 states and 47564 transitions. [2018-10-25 00:17:18,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 00:17:18,751 INFO L276 IsEmpty]: Start isEmpty. Operand 31748 states and 47564 transitions. [2018-10-25 00:17:18,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-10-25 00:17:18,851 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:17:18,852 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 00:17:18,852 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:17:18,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:18,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1088454084, now seen corresponding path program 1 times [2018-10-25 00:17:18,853 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:17:18,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:18,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:17:18,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:18,854 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:17:18,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:17:19,412 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-25 00:17:19,704 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:17:19,705 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:17:19,705 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:17:19,705 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 304 with the following transitions: [2018-10-25 00:17:19,706 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], [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], [350], [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], [1017], [1025], [1033], [1041], [1045], [1047], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:17:19,713 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:17:19,713 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:17:26,617 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:17:26,618 INFO L272 AbstractInterpreter]: Visited 203 different actions 599 times. Merged at 7 different actions 13 times. Never widened. Found 3 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:17:26,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:26,626 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:17:26,626 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:17:26,626 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 00:17:26,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:17:26,636 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:17:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:17:26,844 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:17:26,990 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-25 00:17:26,991 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:17:27,402 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-25 00:17:27,423 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:17:27,424 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-10-25 00:17:27,424 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:17:27,424 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:17:27,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:17:27,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-25 00:17:27,425 INFO L87 Difference]: Start difference. First operand 31748 states and 47564 transitions. Second operand 3 states. [2018-10-25 00:17:29,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:17:29,358 INFO L93 Difference]: Finished difference Result 83838 states and 129375 transitions. [2018-10-25 00:17:29,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:17:29,359 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 303 [2018-10-25 00:17:29,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:17:29,626 INFO L225 Difference]: With dead ends: 83838 [2018-10-25 00:17:29,626 INFO L226 Difference]: Without dead ends: 52304 [2018-10-25 00:17:29,755 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 604 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-25 00:17:29,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52304 states. [2018-10-25 00:17:31,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52304 to 52227. [2018-10-25 00:17:31,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52227 states. [2018-10-25 00:17:32,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52227 states to 52227 states and 78900 transitions. [2018-10-25 00:17:32,073 INFO L78 Accepts]: Start accepts. Automaton has 52227 states and 78900 transitions. Word has length 303 [2018-10-25 00:17:32,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:17:32,074 INFO L481 AbstractCegarLoop]: Abstraction has 52227 states and 78900 transitions. [2018-10-25 00:17:32,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:17:32,074 INFO L276 IsEmpty]: Start isEmpty. Operand 52227 states and 78900 transitions. [2018-10-25 00:17:32,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-10-25 00:17:32,194 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:17:32,195 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 00:17:32,195 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:17:32,195 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:32,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1272451628, now seen corresponding path program 1 times [2018-10-25 00:17:32,196 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:17:32,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:32,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:17:32,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:32,198 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:17:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:17:32,826 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:17:32,827 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:17:32,827 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:17:32,827 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 335 with the following transitions: [2018-10-25 00:17:32,828 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [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], [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], [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], [1017], [1025], [1033], [1041], [1045], [1047], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:17:32,834 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:17:32,835 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:17:34,269 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:17:34,269 INFO L272 AbstractInterpreter]: Visited 202 different actions 398 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 00:17:34,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:34,278 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates Received shutdown request... [2018-10-25 00:17:38,076 INFO L232 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 86.98% of their original sizes. [2018-10-25 00:17:38,076 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:17:38,091 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 00:17:38,095 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 00:17:38,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 12:17:38 BoogieIcfgContainer [2018-10-25 00:17:38,095 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 00:17:38,096 INFO L168 Benchmark]: Toolchain (without parser) took 237949.10 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 734.9 MB in the end (delta: 652.4 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-10-25 00:17:38,097 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-25 00:17:38,098 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1210.05 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 00:17:38,099 INFO L168 Benchmark]: Boogie Procedure Inliner took 297.75 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 720.4 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -842.2 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-25 00:17:38,100 INFO L168 Benchmark]: Boogie Preprocessor took 180.27 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2018-10-25 00:17:38,100 INFO L168 Benchmark]: RCFGBuilder took 4556.37 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 251.7 MB). Peak memory consumption was 251.7 MB. Max. memory is 7.1 GB. [2018-10-25 00:17:38,101 INFO L168 Benchmark]: TraceAbstraction took 231699.62 ms. Allocated memory was 2.2 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.9 GB in the beginning and 734.9 MB in the end (delta: 1.1 GB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-10-25 00:17:38,106 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1210.05 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 297.75 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 720.4 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -842.2 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 180.27 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4556.37 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 251.7 MB). Peak memory consumption was 251.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 231699.62 ms. Allocated memory was 2.2 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.9 GB in the beginning and 734.9 MB in the end (delta: 1.1 GB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1608]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1608). Cancelled while BasicCegarLoop was analyzing trace of length 335 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 3 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 231.6s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 190.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2990 SDtfs, 9788 SDslu, 3446 SDs, 0 SdLazy, 21492 SolverSat, 3218 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 148.9s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 2227 GetRequests, 2099 SyntacticMatches, 7 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52227occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 19.1s AbstIntTime, 6 AbstIntIterations, 3 AbstIntStrong, 0.9990572740173679 AbsIntWeakeningRatio, 0.2422360248447205 AbsIntAvgWeakeningVarsNumRemoved, 17.82857142857143 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 2461 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 6.1s InterpolantComputationTime, 2922 NumberOfCodeBlocks, 2922 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 3712 ConstructedInterpolants, 0 QuantifiedInterpolants, 1957286 SizeOfPredicates, 3 NumberOfNonLiveVariables, 3576 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 963/1027 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown