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/Problem04_label53_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 06:33:58,361 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 06:33:58,363 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 06:33:58,378 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 06:33:58,379 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 06:33:58,382 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 06:33:58,386 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 06:33:58,389 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 06:33:58,394 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 06:33:58,394 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 06:33:58,396 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 06:33:58,396 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 06:33:58,397 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 06:33:58,398 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 06:33:58,400 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 06:33:58,403 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 06:33:58,404 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 06:33:58,405 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 06:33:58,416 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 06:33:58,420 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 06:33:58,422 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 06:33:58,423 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 06:33:58,428 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 06:33:58,428 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 06:33:58,428 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 06:33:58,430 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 06:33:58,431 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 06:33:58,432 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 06:33:58,433 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 06:33:58,434 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 06:33:58,434 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 06:33:58,434 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 06:33:58,435 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 06:33:58,435 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 06:33:58,436 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 06:33:58,436 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 06:33:58,437 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 [2018-10-27 06:33:58,452 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 06:33:58,452 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 06:33:58,453 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 06:33:58,453 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 06:33:58,453 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 06:33:58,453 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 06:33:58,453 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 06:33:58,454 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 06:33:58,454 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 06:33:58,454 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 06:33:58,454 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 06:33:58,454 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 06:33:58,455 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 06:33:58,455 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 06:33:58,455 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 06:33:58,456 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 06:33:58,456 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 06:33:58,456 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 06:33:58,456 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 06:33:58,456 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 06:33:58,456 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 06:33:58,457 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 06:33:58,457 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 06:33:58,457 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 06:33:58,457 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 06:33:58,457 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 06:33:58,458 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 06:33:58,458 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 06:33:58,458 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 06:33:58,458 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 06:33:58,458 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 06:33:58,459 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 06:33:58,459 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 06:33:58,459 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 06:33:58,459 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 06:33:58,459 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 06:33:58,510 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 06:33:58,523 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 06:33:58,527 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 06:33:58,529 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 06:33:58,529 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 06:33:58,530 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label53_true-unreach-call.c [2018-10-27 06:33:58,596 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b354c72f0/84e011973ae54d80aaf48f66f3729434/FLAGbf1cb3ae9 [2018-10-27 06:33:59,454 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 06:33:59,455 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label53_true-unreach-call.c [2018-10-27 06:33:59,491 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b354c72f0/84e011973ae54d80aaf48f66f3729434/FLAGbf1cb3ae9 [2018-10-27 06:33:59,508 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b354c72f0/84e011973ae54d80aaf48f66f3729434 [2018-10-27 06:33:59,520 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 06:33:59,521 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 06:33:59,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 06:33:59,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 06:33:59,527 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 06:33:59,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:33:59" (1/1) ... [2018-10-27 06:33:59,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b9237f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:33:59, skipping insertion in model container [2018-10-27 06:33:59,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:33:59" (1/1) ... [2018-10-27 06:33:59,544 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 06:33:59,698 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 06:34:01,136 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:34:01,141 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 06:34:01,863 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:34:01,904 INFO L193 MainTranslator]: Completed translation [2018-10-27 06:34:01,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:34:01 WrapperNode [2018-10-27 06:34:01,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 06:34:01,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 06:34:01,906 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 06:34:01,906 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 06:34:01,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:34:01" (1/1) ... [2018-10-27 06:34:01,980 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:34:01" (1/1) ... [2018-10-27 06:34:02,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 06:34:02,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 06:34:02,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 06:34:02,363 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 06:34:02,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:34:01" (1/1) ... [2018-10-27 06:34:02,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:34:01" (1/1) ... [2018-10-27 06:34:02,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:34:01" (1/1) ... [2018-10-27 06:34:02,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:34:01" (1/1) ... [2018-10-27 06:34:02,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:34:01" (1/1) ... [2018-10-27 06:34:02,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:34:01" (1/1) ... [2018-10-27 06:34:02,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:34:01" (1/1) ... [2018-10-27 06:34:02,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 06:34:02,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 06:34:02,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 06:34:02,611 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 06:34:02,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:34:01" (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 [2018-10-27 06:34:02,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 06:34:02,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 06:34:02,681 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 06:34:02,682 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 06:34:02,682 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 06:34:02,682 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 06:34:02,682 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 06:34:02,682 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 06:34:02,683 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 06:34:02,683 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 06:34:02,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 06:34:02,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 06:34:02,683 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 06:34:02,685 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 06:34:12,453 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 06:34:12,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:34:12 BoogieIcfgContainer [2018-10-27 06:34:12,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 06:34:12,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 06:34:12,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 06:34:12,458 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 06:34:12,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:33:59" (1/3) ... [2018-10-27 06:34:12,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4517cdaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:34:12, skipping insertion in model container [2018-10-27 06:34:12,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:34:01" (2/3) ... [2018-10-27 06:34:12,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4517cdaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:34:12, skipping insertion in model container [2018-10-27 06:34:12,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:34:12" (3/3) ... [2018-10-27 06:34:12,462 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label53_true-unreach-call.c [2018-10-27 06:34:12,472 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 06:34:12,482 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 06:34:12,500 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 06:34:12,548 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 06:34:12,548 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 06:34:12,548 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 06:34:12,548 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 06:34:12,548 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 06:34:12,549 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 06:34:12,549 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 06:34:12,549 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 06:34:12,590 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states. [2018-10-27 06:34:12,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 809 [2018-10-27 06:34:12,635 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:34:12,637 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:34:12,640 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:34:12,645 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:34:12,646 INFO L82 PathProgramCache]: Analyzing trace with hash -890961458, now seen corresponding path program 1 times [2018-10-27 06:34:12,648 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:34:12,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:34:12,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:34:12,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:34:12,698 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:34:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:34:15,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:34:15,318 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:34:15,318 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 06:34:15,319 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:34:15,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 06:34:15,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:34:15,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:34:15,344 INFO L87 Difference]: Start difference. First operand 907 states. Second operand 3 states. [2018-10-27 06:34:22,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:34:22,537 INFO L93 Difference]: Finished difference Result 2647 states and 5102 transitions. [2018-10-27 06:34:22,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:34:22,542 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 808 [2018-10-27 06:34:22,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:34:22,584 INFO L225 Difference]: With dead ends: 2647 [2018-10-27 06:34:22,584 INFO L226 Difference]: Without dead ends: 1738 [2018-10-27 06:34:22,594 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:34:22,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2018-10-27 06:34:22,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1738. [2018-10-27 06:34:22,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2018-10-27 06:34:22,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 3286 transitions. [2018-10-27 06:34:22,766 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 3286 transitions. Word has length 808 [2018-10-27 06:34:22,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:34:22,771 INFO L481 AbstractCegarLoop]: Abstraction has 1738 states and 3286 transitions. [2018-10-27 06:34:22,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 06:34:22,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 3286 transitions. [2018-10-27 06:34:22,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 818 [2018-10-27 06:34:22,803 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:34:22,804 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:34:22,804 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:34:22,805 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:34:22,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1691675949, now seen corresponding path program 1 times [2018-10-27 06:34:22,806 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:34:22,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:34:22,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:34:22,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:34:22,808 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:34:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:34:24,254 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:34:24,254 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:34:24,255 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 06:34:24,255 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:34:24,258 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 06:34:24,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:34:24,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:34:24,258 INFO L87 Difference]: Start difference. First operand 1738 states and 3286 transitions. Second operand 3 states. [2018-10-27 06:34:31,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:34:31,677 INFO L93 Difference]: Finished difference Result 5140 states and 9845 transitions. [2018-10-27 06:34:31,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:34:31,685 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 817 [2018-10-27 06:34:31,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:34:31,712 INFO L225 Difference]: With dead ends: 5140 [2018-10-27 06:34:31,713 INFO L226 Difference]: Without dead ends: 3408 [2018-10-27 06:34:31,720 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:34:31,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3408 states. [2018-10-27 06:34:31,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3408 to 3408. [2018-10-27 06:34:31,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3408 states. [2018-10-27 06:34:31,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3408 states to 3408 states and 6004 transitions. [2018-10-27 06:34:31,825 INFO L78 Accepts]: Start accepts. Automaton has 3408 states and 6004 transitions. Word has length 817 [2018-10-27 06:34:31,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:34:31,827 INFO L481 AbstractCegarLoop]: Abstraction has 3408 states and 6004 transitions. [2018-10-27 06:34:31,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 06:34:31,827 INFO L276 IsEmpty]: Start isEmpty. Operand 3408 states and 6004 transitions. [2018-10-27 06:34:31,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 829 [2018-10-27 06:34:31,863 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:34:31,864 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:34:31,864 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:34:31,864 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:34:31,866 INFO L82 PathProgramCache]: Analyzing trace with hash -68713423, now seen corresponding path program 1 times [2018-10-27 06:34:31,866 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:34:31,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:34:31,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:34:31,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:34:31,868 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:34:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:34:34,161 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:34:34,162 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:34:34,162 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:34:34,164 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 829 with the following transitions: [2018-10-27 06:34:34,169 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [290], [294], [298], [302], [306], [310], [314], [318], [322], [326], [330], [334], [338], [342], [346], [350], [354], [358], [362], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [633], [641], [649], [657], [665], [673], [677], [679], [854], [858], [862], [866], [870], [874], [878], [882], [886], [890], [894], [898], [902], [906], [910], [914], [918], [922], [926], [930], [934], [938], [942], [946], [950], [954], [958], [962], [966], [970], [974], [978], [982], [986], [990], [994], [998], [1002], [1006], [1010], [1014], [1018], [1022], [1026], [1030], [1034], [1038], [1042], [1046], [1050], [1054], [1058], [1062], [1066], [1070], [1074], [1078], [1082], [1086], [1090], [1094], [1098], [1102], [1106], [1110], [1114], [1118], [1122], [1126], [1130], [1134], [1138], [1142], [1146], [1150], [1154], [1158], [1162], [1166], [1170], [1174], [1178], [1182], [1186], [1190], [1194], [1198], [1202], [1206], [1210], [1214], [1218], [1222], [1226], [1230], [1234], [1238], [1242], [1246], [1250], [1254], [1258], [1262], [1266], [1270], [1274], [1278], [1282], [1286], [1290], [1294], [1298], [1302], [1306], [1310], [1314], [1318], [1322], [1326], [1330], [1334], [1338], [1342], [1346], [1350], [1354], [1358], [1362], [1366], [1370], [1374], [1378], [1382], [1386], [1390], [1394], [1398], [1402], [1406], [1410], [1414], [1418], [1422], [1426], [1430], [1434], [1438], [1442], [1446], [1450], [1454], [1458], [1462], [1466], [1470], [1474], [1478], [1482], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1574], [1578], [1582], [1586], [1590], [1594], [1598], [1602], [1606], [1610], [1614], [1618], [1622], [1626], [1630], [1634], [1638], [1642], [1646], [1650], [1654], [1658], [1662], [1666], [1670], [1674], [1678], [1682], [1686], [1690], [1694], [1698], [1702], [1706], [1710], [1714], [1718], [1722], [1726], [1730], [1734], [1738], [1742], [1746], [1750], [1754], [1758], [1762], [1766], [1770], [1774], [1778], [1782], [1786], [1790], [1794], [1798], [1802], [1806], [1810], [1814], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1926], [1930], [1934], [1938], [1942], [1946], [1950], [1954], [1958], [1962], [1966], [1970], [1974], [1978], [1982], [1986], [1990], [1994], [1998], [2002], [2006], [2010], [2014], [2018], [2022], [2026], [2030], [2034], [2038], [2042], [2046], [2050], [2054], [2058], [2062], [2066], [2070], [2074], [2078], [2082], [2086], [2090], [2094], [2098], [2102], [2106], [2110], [2114], [2118], [2122], [2126], [2130], [2134], [2138], [2142], [2146], [2150], [2154], [2158], [2162], [2166], [2170], [2174], [2178], [2182], [2186], [2190], [2194], [2198], [2202], [2206], [2210], [2214], [2218], [2222], [2226], [2230], [2234], [2238], [2242], [2246], [2250], [2254], [2258], [2262], [2266], [2270], [2274], [2278], [2282], [2286], [2290], [2294], [2298], [2302], [2306], [2310], [2314], [2318], [2322], [2326], [2330], [2334], [2338], [2342], [2346], [2350], [2354], [2358], [2362], [2366], [2370], [2374], [2378], [2382], [2386], [2390], [2394], [2398], [2402], [2406], [2410], [2414], [2418], [2422], [2426], [2430], [2434], [2438], [2442], [2446], [2450], [2454], [2458], [2462], [2466], [2470], [2474], [2478], [2482], [2486], [2490], [2494], [2498], [2502], [2506], [2510], [2514], [2518], [2522], [2526], [2530], [2534], [2538], [2542], [2546], [2550], [2554], [2558], [2562], [2566], [2570], [2574], [2578], [2582], [2586], [2590], [2594], [2598], [2602], [2606], [2610], [2614], [2618], [2622], [2626], [2630], [2634], [2638], [2642], [2646], [2650], [2654], [2658], [2662], [2666], [2669], [2670], [2674], [2678], [2682], [2686], [2690], [2694], [2698], [2702], [2706], [2710], [2714], [2718], [2722], [2726], [2730], [2734], [2738], [2742], [2746], [2750], [2754], [2758], [2762], [2766], [2770], [2774], [2778], [2782], [2786], [2790], [2794], [2798], [2802], [2806], [2810], [2814], [2818], [2822], [2826], [2830], [2834], [2838], [2842], [2846], [2850], [2854], [2858], [2862], [2866], [2870], [2874], [2878], [2882], [2886], [2890], [2894], [2898], [2902], [2906], [2910], [2914], [2918], [2922], [2926], [2930], [2934], [2938], [2942], [2946], [2950], [2954], [2958], [2962], [2966], [2970], [2974], [2978], [2982], [2986], [2990], [2994], [2998], [3002], [3006], [3010], [3014], [3018], [3022], [3026], [3030], [3034], [3038], [3042], [3046], [3050], [3054], [3058], [3062], [3066], [3070], [3074], [3078], [3082], [3086], [3090], [3094], [3098], [3102], [3106], [3110], [3114], [3118], [3122], [3126], [3130], [3134], [3138], [3142], [3146], [3150], [3154], [3158], [3162], [3166], [3170], [3174], [3178], [3182], [3186], [3190], [3194], [3198], [3202], [3206], [3210], [3214], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3298], [3302], [3306], [3310], [3314], [3318], [3322], [3326], [3330], [3334], [3338], [3342], [3346], [3350], [3354], [3358], [3362], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3418], [3422], [3426], [3430], [3434], [3438], [3442], [3446], [3450], [3454], [3458], [3462], [3466], [3470], [3474], [3478], [3482], [3486], [3490], [3494], [3498], [3502], [3505], [3509], [3513], [3519], [3523], [3525], [3530], [3532], [3534], [3536], [3537], [3538], [3540], [3541] [2018-10-27 06:34:34,258 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:34:34,258 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:34:37,554 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:34:37,557 INFO L272 AbstractInterpreter]: Visited 812 different actions 1617 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 44 variables. [2018-10-27 06:34:37,601 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:34:37,603 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:34:37,603 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:34:37,603 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 [2018-10-27 06:34:37,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:34:37,619 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:34:37,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:34:37,960 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:34:39,267 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:34:39,267 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:34:40,039 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:34:40,062 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:34:40,062 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2018-10-27 06:34:40,063 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:34:40,064 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 06:34:40,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:34:40,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-10-27 06:34:40,065 INFO L87 Difference]: Start difference. First operand 3408 states and 6004 transitions. Second operand 3 states. [2018-10-27 06:34:45,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:34:45,861 INFO L93 Difference]: Finished difference Result 10150 states and 18133 transitions. [2018-10-27 06:34:45,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:34:45,864 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 828 [2018-10-27 06:34:45,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:34:45,907 INFO L225 Difference]: With dead ends: 10150 [2018-10-27 06:34:45,908 INFO L226 Difference]: Without dead ends: 6748 [2018-10-27 06:34:45,920 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1667 GetRequests, 1660 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-10-27 06:34:45,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6748 states. [2018-10-27 06:34:46,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6748 to 6748. [2018-10-27 06:34:46,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6748 states. [2018-10-27 06:34:46,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6748 states to 6748 states and 10406 transitions. [2018-10-27 06:34:46,083 INFO L78 Accepts]: Start accepts. Automaton has 6748 states and 10406 transitions. Word has length 828 [2018-10-27 06:34:46,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:34:46,085 INFO L481 AbstractCegarLoop]: Abstraction has 6748 states and 10406 transitions. [2018-10-27 06:34:46,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 06:34:46,085 INFO L276 IsEmpty]: Start isEmpty. Operand 6748 states and 10406 transitions. [2018-10-27 06:34:46,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 836 [2018-10-27 06:34:46,111 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:34:46,112 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:34:46,112 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:34:46,112 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:34:46,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1563086473, now seen corresponding path program 1 times [2018-10-27 06:34:46,113 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:34:46,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:34:46,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:34:46,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:34:46,115 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:34:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:34:47,722 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:34:47,722 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:34:47,723 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:34:47,723 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 836 with the following transitions: [2018-10-27 06:34:47,725 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [290], [294], [298], [302], [306], [310], [314], [318], [322], [326], [330], [334], [338], [342], [346], [350], [354], [358], [362], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [633], [641], [649], [657], [665], [673], [677], [679], [854], [858], [862], [866], [870], [874], [878], [882], [886], [890], [894], [898], [902], [906], [910], [914], [918], [922], [926], [930], [934], [938], [942], [946], [950], [954], [958], [962], [966], [970], [974], [978], [982], [986], [990], [994], [998], [1002], [1006], [1010], [1014], [1018], [1022], [1026], [1030], [1034], [1038], [1042], [1046], [1050], [1054], [1058], [1062], [1066], [1070], [1074], [1078], [1082], [1086], [1090], [1094], [1098], [1102], [1106], [1110], [1114], [1118], [1122], [1126], [1130], [1134], [1138], [1142], [1146], [1150], [1154], [1158], [1162], [1166], [1170], [1174], [1178], [1182], [1186], [1190], [1194], [1198], [1202], [1206], [1210], [1214], [1218], [1222], [1226], [1230], [1234], [1238], [1242], [1246], [1250], [1254], [1258], [1262], [1266], [1270], [1274], [1278], [1282], [1286], [1290], [1294], [1298], [1302], [1306], [1310], [1314], [1318], [1322], [1326], [1330], [1334], [1338], [1342], [1346], [1350], [1354], [1358], [1362], [1366], [1370], [1374], [1378], [1382], [1386], [1390], [1394], [1398], [1402], [1406], [1410], [1414], [1418], [1422], [1426], [1430], [1434], [1438], [1442], [1446], [1450], [1454], [1458], [1462], [1466], [1470], [1474], [1478], [1482], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1574], [1578], [1582], [1586], [1590], [1594], [1598], [1602], [1606], [1610], [1614], [1618], [1622], [1626], [1630], [1634], [1638], [1642], [1646], [1650], [1654], [1658], [1662], [1666], [1670], [1674], [1678], [1682], [1686], [1690], [1694], [1698], [1702], [1706], [1710], [1714], [1718], [1722], [1726], [1730], [1734], [1738], [1742], [1746], [1750], [1754], [1758], [1762], [1766], [1770], [1774], [1778], [1782], [1786], [1790], [1794], [1798], [1802], [1806], [1810], [1814], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1926], [1930], [1934], [1938], [1942], [1946], [1950], [1954], [1958], [1962], [1966], [1970], [1974], [1978], [1982], [1986], [1990], [1994], [1998], [2002], [2006], [2010], [2014], [2018], [2022], [2026], [2030], [2034], [2038], [2042], [2046], [2050], [2054], [2058], [2062], [2066], [2070], [2074], [2078], [2082], [2086], [2090], [2094], [2098], [2102], [2106], [2110], [2114], [2118], [2122], [2126], [2130], [2134], [2138], [2142], [2146], [2150], [2154], [2158], [2162], [2166], [2170], [2174], [2178], [2182], [2186], [2190], [2194], [2198], [2202], [2206], [2210], [2214], [2218], [2222], [2226], [2230], [2234], [2238], [2242], [2246], [2250], [2254], [2258], [2262], [2266], [2270], [2274], [2278], [2282], [2286], [2290], [2294], [2298], [2302], [2306], [2310], [2314], [2318], [2322], [2326], [2330], [2334], [2338], [2342], [2346], [2350], [2354], [2358], [2362], [2366], [2370], [2374], [2378], [2382], [2386], [2390], [2394], [2398], [2402], [2406], [2410], [2414], [2418], [2422], [2426], [2430], [2434], [2438], [2442], [2446], [2450], [2454], [2458], [2462], [2466], [2470], [2474], [2478], [2482], [2486], [2490], [2494], [2498], [2502], [2506], [2510], [2514], [2518], [2522], [2526], [2530], [2534], [2538], [2542], [2546], [2550], [2554], [2558], [2562], [2566], [2570], [2574], [2578], [2582], [2586], [2590], [2594], [2598], [2602], [2606], [2610], [2614], [2618], [2622], [2626], [2630], [2634], [2638], [2642], [2646], [2650], [2654], [2658], [2662], [2666], [2670], [2674], [2678], [2682], [2686], [2690], [2694], [2697], [2698], [2702], [2706], [2710], [2714], [2718], [2722], [2726], [2730], [2734], [2738], [2742], [2746], [2750], [2754], [2758], [2762], [2766], [2770], [2774], [2778], [2782], [2786], [2790], [2794], [2798], [2802], [2806], [2810], [2814], [2818], [2822], [2826], [2830], [2834], [2838], [2842], [2846], [2850], [2854], [2858], [2862], [2866], [2870], [2874], [2878], [2882], [2886], [2890], [2894], [2898], [2902], [2906], [2910], [2914], [2918], [2922], [2926], [2930], [2934], [2938], [2942], [2946], [2950], [2954], [2958], [2962], [2966], [2970], [2974], [2978], [2982], [2986], [2990], [2994], [2998], [3002], [3006], [3010], [3014], [3018], [3022], [3026], [3030], [3034], [3038], [3042], [3046], [3050], [3054], [3058], [3062], [3066], [3070], [3074], [3078], [3082], [3086], [3090], [3094], [3098], [3102], [3106], [3110], [3114], [3118], [3122], [3126], [3130], [3134], [3138], [3142], [3146], [3150], [3154], [3158], [3162], [3166], [3170], [3174], [3178], [3182], [3186], [3190], [3194], [3198], [3202], [3206], [3210], [3214], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3298], [3302], [3306], [3310], [3314], [3318], [3322], [3326], [3330], [3334], [3338], [3342], [3346], [3350], [3354], [3358], [3362], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3418], [3422], [3426], [3430], [3434], [3438], [3442], [3446], [3450], [3454], [3458], [3462], [3466], [3470], [3474], [3478], [3482], [3486], [3490], [3494], [3498], [3502], [3505], [3509], [3513], [3519], [3523], [3525], [3530], [3532], [3534], [3536], [3537], [3538], [3540], [3541] [2018-10-27 06:34:47,748 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:34:47,748 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:34:50,196 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 06:34:50,197 INFO L272 AbstractInterpreter]: Visited 811 different actions 1616 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 44 variables. [2018-10-27 06:34:50,203 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:34:50,203 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 06:34:51,668 INFO L227 lantSequenceWeakener]: Weakened 832 states. On average, predicates are now at 80.05% of their original sizes. [2018-10-27 06:34:51,668 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 06:34:52,267 INFO L415 sIntCurrentIteration]: We unified 834 AI predicates to 834 [2018-10-27 06:34:52,267 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 06:34:52,268 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:34:52,269 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [7] total 21 [2018-10-27 06:34:52,269 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:34:52,271 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-27 06:34:52,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-27 06:34:52,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2018-10-27 06:34:52,272 INFO L87 Difference]: Start difference. First operand 6748 states and 10406 transitions. Second operand 16 states. [2018-10-27 06:35:50,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:35:50,566 INFO L93 Difference]: Finished difference Result 16047 states and 25896 transitions. [2018-10-27 06:35:50,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-27 06:35:50,566 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 835 [2018-10-27 06:35:50,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:35:50,611 INFO L225 Difference]: With dead ends: 16047 [2018-10-27 06:35:50,611 INFO L226 Difference]: Without dead ends: 9305 [2018-10-27 06:35:50,628 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 859 GetRequests, 820 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=225, Invalid=1415, Unknown=0, NotChecked=0, Total=1640 [2018-10-27 06:35:50,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9305 states. [2018-10-27 06:35:50,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9305 to 9296. [2018-10-27 06:35:50,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9296 states. [2018-10-27 06:35:50,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9296 states to 9296 states and 13026 transitions. [2018-10-27 06:35:50,835 INFO L78 Accepts]: Start accepts. Automaton has 9296 states and 13026 transitions. Word has length 835 [2018-10-27 06:35:50,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:35:50,837 INFO L481 AbstractCegarLoop]: Abstraction has 9296 states and 13026 transitions. [2018-10-27 06:35:50,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-27 06:35:50,837 INFO L276 IsEmpty]: Start isEmpty. Operand 9296 states and 13026 transitions. [2018-10-27 06:35:50,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 953 [2018-10-27 06:35:50,868 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:35:50,869 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:35:50,870 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:35:50,870 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:35:50,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1366660284, now seen corresponding path program 1 times [2018-10-27 06:35:50,871 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:35:50,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:35:50,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:35:50,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:35:50,872 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:35:50,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:35:51,338 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-27 06:35:52,080 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 139 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:35:52,080 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:35:52,081 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:35:52,081 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 953 with the following transitions: [2018-10-27 06:35:52,082 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [290], [294], [298], [302], [306], [310], [314], [318], [322], [326], [330], [334], [338], [342], [346], [350], [354], [358], [362], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [633], [641], [649], [657], [665], [673], [677], [679], [854], [858], [862], [866], [870], [874], [878], [882], [886], [890], [894], [898], [902], [906], [910], [914], [918], [922], [926], [930], [934], [938], [942], [946], [950], [954], [958], [962], [966], [970], [974], [978], [982], [986], [990], [994], [998], [1002], [1006], [1010], [1014], [1018], [1022], [1026], [1030], [1034], [1038], [1042], [1046], [1050], [1054], [1058], [1062], [1066], [1070], [1074], [1078], [1082], [1086], [1090], [1094], [1098], [1102], [1106], [1110], [1114], [1118], [1122], [1126], [1130], [1134], [1138], [1142], [1146], [1150], [1154], [1158], [1162], [1166], [1170], [1174], [1178], [1182], [1186], [1190], [1194], [1198], [1202], [1206], [1210], [1214], [1218], [1222], [1226], [1230], [1234], [1238], [1242], [1246], [1250], [1254], [1258], [1262], [1266], [1270], [1274], [1278], [1282], [1286], [1290], [1294], [1298], [1302], [1306], [1310], [1314], [1318], [1322], [1326], [1330], [1334], [1338], [1342], [1346], [1350], [1354], [1358], [1362], [1366], [1370], [1374], [1378], [1382], [1386], [1390], [1394], [1398], [1402], [1406], [1410], [1414], [1418], [1422], [1426], [1430], [1434], [1438], [1442], [1446], [1450], [1454], [1458], [1462], [1466], [1470], [1474], [1478], [1482], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1574], [1578], [1582], [1586], [1590], [1594], [1598], [1602], [1606], [1610], [1614], [1618], [1622], [1626], [1630], [1634], [1638], [1642], [1646], [1650], [1654], [1658], [1662], [1666], [1670], [1674], [1678], [1682], [1686], [1690], [1694], [1698], [1702], [1706], [1710], [1714], [1718], [1722], [1726], [1730], [1734], [1738], [1742], [1746], [1750], [1754], [1758], [1762], [1766], [1770], [1774], [1778], [1782], [1786], [1790], [1794], [1798], [1802], [1806], [1810], [1814], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1926], [1930], [1934], [1938], [1942], [1946], [1950], [1954], [1958], [1962], [1966], [1970], [1974], [1978], [1982], [1986], [1990], [1994], [1998], [2002], [2006], [2010], [2014], [2018], [2022], [2026], [2030], [2034], [2038], [2042], [2046], [2050], [2054], [2058], [2062], [2066], [2070], [2074], [2078], [2082], [2086], [2090], [2094], [2098], [2102], [2106], [2110], [2114], [2118], [2122], [2126], [2130], [2134], [2138], [2142], [2146], [2150], [2154], [2158], [2162], [2166], [2170], [2174], [2178], [2182], [2186], [2190], [2194], [2198], [2202], [2206], [2210], [2214], [2218], [2222], [2226], [2230], [2234], [2238], [2242], [2246], [2250], [2254], [2258], [2262], [2266], [2270], [2274], [2278], [2282], [2286], [2290], [2294], [2298], [2302], [2306], [2310], [2314], [2318], [2322], [2326], [2330], [2334], [2338], [2342], [2346], [2350], [2354], [2358], [2362], [2366], [2370], [2374], [2378], [2382], [2386], [2390], [2394], [2398], [2402], [2406], [2410], [2414], [2418], [2422], [2426], [2430], [2434], [2438], [2442], [2446], [2450], [2454], [2458], [2462], [2466], [2470], [2474], [2478], [2482], [2486], [2490], [2494], [2498], [2502], [2506], [2510], [2514], [2518], [2522], [2526], [2530], [2534], [2538], [2542], [2546], [2550], [2554], [2558], [2562], [2566], [2570], [2574], [2578], [2582], [2586], [2590], [2594], [2598], [2602], [2606], [2610], [2614], [2618], [2622], [2626], [2630], [2634], [2638], [2642], [2646], [2650], [2654], [2658], [2662], [2666], [2669], [2670], [2674], [2678], [2682], [2686], [2690], [2694], [2698], [2702], [2706], [2710], [2714], [2718], [2722], [2726], [2730], [2734], [2738], [2742], [2746], [2750], [2754], [2758], [2762], [2766], [2770], [2774], [2778], [2782], [2786], [2790], [2794], [2798], [2802], [2806], [2810], [2814], [2818], [2822], [2826], [2830], [2834], [2838], [2842], [2846], [2850], [2854], [2858], [2862], [2866], [2870], [2874], [2878], [2882], [2886], [2890], [2894], [2898], [2902], [2906], [2910], [2914], [2918], [2922], [2926], [2930], [2934], [2938], [2942], [2946], [2950], [2954], [2958], [2962], [2966], [2970], [2974], [2978], [2982], [2986], [2990], [2994], [2998], [3002], [3006], [3010], [3014], [3018], [3022], [3026], [3030], [3034], [3038], [3042], [3046], [3050], [3054], [3058], [3062], [3066], [3070], [3074], [3078], [3082], [3085], [3086], [3090], [3094], [3098], [3102], [3106], [3110], [3114], [3118], [3122], [3126], [3130], [3134], [3138], [3142], [3146], [3150], [3154], [3158], [3162], [3166], [3170], [3174], [3178], [3182], [3186], [3190], [3194], [3198], [3202], [3206], [3210], [3214], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3298], [3302], [3306], [3310], [3314], [3318], [3322], [3326], [3330], [3334], [3338], [3342], [3346], [3350], [3354], [3358], [3362], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3418], [3422], [3426], [3430], [3434], [3438], [3442], [3446], [3450], [3454], [3458], [3462], [3466], [3470], [3474], [3478], [3482], [3486], [3490], [3494], [3498], [3502], [3505], [3509], [3513], [3519], [3523], [3525], [3530], [3532], [3534], [3536], [3537], [3538], [3540], [3541] [2018-10-27 06:35:52,097 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:35:52,097 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:35:53,744 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:35:53,744 INFO L272 AbstractInterpreter]: Visited 813 different actions 1619 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 44 variables. [2018-10-27 06:35:53,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:35:53,751 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:35:53,751 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:35:53,751 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 [2018-10-27 06:35:53,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:35:53,760 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:35:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:35:54,044 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:35:55,226 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 156 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:35:55,227 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:35:56,119 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 156 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:35:56,140 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 06:35:56,140 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 15 [2018-10-27 06:35:56,142 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 06:35:56,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-27 06:35:56,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-27 06:35:56,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2018-10-27 06:35:56,146 INFO L87 Difference]: Start difference. First operand 9296 states and 13026 transitions. Second operand 13 states. [2018-10-27 06:36:31,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:36:31,106 INFO L93 Difference]: Finished difference Result 42719 states and 66669 transitions. [2018-10-27 06:36:31,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-27 06:36:31,115 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 952 [2018-10-27 06:36:31,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:36:31,324 INFO L225 Difference]: With dead ends: 42719 [2018-10-27 06:36:31,325 INFO L226 Difference]: Without dead ends: 34264 [2018-10-27 06:36:31,373 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2017 GetRequests, 1931 SyntacticMatches, 2 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2536 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1175, Invalid=6135, Unknown=0, NotChecked=0, Total=7310 [2018-10-27 06:36:31,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34264 states. [2018-10-27 06:36:32,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34264 to 34118. [2018-10-27 06:36:32,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34118 states. [2018-10-27 06:36:32,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34118 states to 34118 states and 44649 transitions. [2018-10-27 06:36:32,201 INFO L78 Accepts]: Start accepts. Automaton has 34118 states and 44649 transitions. Word has length 952 [2018-10-27 06:36:32,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:36:32,202 INFO L481 AbstractCegarLoop]: Abstraction has 34118 states and 44649 transitions. [2018-10-27 06:36:32,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-27 06:36:32,202 INFO L276 IsEmpty]: Start isEmpty. Operand 34118 states and 44649 transitions. [2018-10-27 06:36:32,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 986 [2018-10-27 06:36:32,334 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:36:32,335 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:36:32,335 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:36:32,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:36:32,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1262575742, now seen corresponding path program 1 times [2018-10-27 06:36:32,336 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:36:32,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:36:32,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:36:32,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:36:32,337 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:36:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:36:33,043 WARN L179 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-10-27 06:36:33,327 WARN L179 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-27 06:36:33,554 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-27 06:36:33,876 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2018-10-27 06:36:36,582 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:36:36,582 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:36:36,582 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:36:36,583 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 986 with the following transitions: [2018-10-27 06:36:36,584 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [290], [294], [298], [302], [306], [310], [314], [318], [322], [326], [330], [334], [338], [342], [346], [350], [354], [358], [362], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [633], [641], [649], [657], [665], [673], [677], [679], [854], [858], [862], [866], [870], [874], [878], [882], [886], [890], [894], [898], [902], [906], [910], [914], [918], [922], [926], [930], [934], [938], [942], [946], [950], [954], [958], [962], [966], [970], [974], [978], [982], [986], [990], [994], [998], [1002], [1006], [1010], [1014], [1018], [1022], [1026], [1030], [1034], [1038], [1042], [1046], [1050], [1054], [1058], [1062], [1066], [1070], [1074], [1078], [1082], [1086], [1090], [1094], [1098], [1102], [1106], [1110], [1114], [1118], [1122], [1126], [1130], [1134], [1138], [1142], [1146], [1150], [1154], [1158], [1162], [1166], [1170], [1174], [1178], [1182], [1186], [1190], [1194], [1198], [1202], [1206], [1210], [1214], [1218], [1222], [1226], [1230], [1234], [1238], [1242], [1246], [1250], [1254], [1258], [1262], [1266], [1270], [1274], [1278], [1282], [1286], [1290], [1294], [1298], [1302], [1306], [1310], [1314], [1318], [1322], [1326], [1330], [1334], [1338], [1342], [1346], [1350], [1354], [1358], [1362], [1366], [1370], [1374], [1378], [1382], [1386], [1390], [1394], [1398], [1402], [1406], [1410], [1414], [1418], [1422], [1426], [1430], [1434], [1438], [1442], [1446], [1450], [1454], [1458], [1462], [1466], [1470], [1474], [1478], [1482], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1574], [1578], [1582], [1586], [1590], [1594], [1598], [1602], [1606], [1610], [1614], [1618], [1622], [1626], [1630], [1634], [1638], [1642], [1646], [1650], [1654], [1658], [1662], [1666], [1670], [1674], [1678], [1682], [1686], [1690], [1694], [1698], [1702], [1706], [1710], [1714], [1718], [1722], [1726], [1730], [1734], [1738], [1742], [1746], [1750], [1754], [1758], [1762], [1766], [1770], [1774], [1778], [1782], [1786], [1790], [1794], [1798], [1802], [1806], [1810], [1814], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1926], [1930], [1934], [1938], [1942], [1946], [1950], [1954], [1958], [1962], [1966], [1970], [1974], [1978], [1982], [1986], [1990], [1994], [1998], [2002], [2006], [2010], [2014], [2018], [2022], [2026], [2030], [2034], [2038], [2042], [2046], [2050], [2054], [2058], [2062], [2066], [2070], [2074], [2078], [2082], [2086], [2090], [2094], [2098], [2102], [2106], [2110], [2114], [2118], [2122], [2126], [2130], [2134], [2138], [2142], [2146], [2150], [2154], [2158], [2162], [2166], [2170], [2174], [2178], [2182], [2186], [2190], [2194], [2198], [2202], [2206], [2210], [2214], [2218], [2222], [2226], [2230], [2234], [2238], [2242], [2246], [2250], [2254], [2258], [2262], [2266], [2270], [2274], [2278], [2282], [2286], [2290], [2294], [2298], [2302], [2306], [2310], [2314], [2318], [2322], [2326], [2330], [2334], [2338], [2342], [2346], [2350], [2354], [2358], [2362], [2366], [2370], [2374], [2378], [2382], [2386], [2390], [2394], [2398], [2402], [2406], [2410], [2414], [2418], [2422], [2426], [2430], [2434], [2438], [2442], [2446], [2450], [2454], [2458], [2462], [2466], [2470], [2474], [2478], [2482], [2486], [2490], [2494], [2498], [2502], [2506], [2510], [2514], [2518], [2522], [2526], [2530], [2534], [2538], [2542], [2546], [2550], [2554], [2558], [2562], [2566], [2570], [2574], [2578], [2582], [2586], [2590], [2594], [2598], [2602], [2606], [2610], [2614], [2618], [2622], [2626], [2630], [2634], [2638], [2642], [2646], [2650], [2654], [2658], [2662], [2666], [2669], [2670], [2674], [2678], [2682], [2686], [2690], [2694], [2698], [2702], [2706], [2710], [2714], [2718], [2722], [2726], [2730], [2734], [2738], [2742], [2746], [2750], [2754], [2758], [2762], [2766], [2770], [2774], [2778], [2782], [2786], [2790], [2794], [2798], [2802], [2806], [2810], [2814], [2818], [2822], [2826], [2830], [2834], [2838], [2842], [2846], [2850], [2854], [2858], [2862], [2866], [2870], [2874], [2878], [2882], [2886], [2890], [2894], [2898], [2902], [2906], [2910], [2914], [2918], [2922], [2926], [2930], [2934], [2938], [2942], [2946], [2950], [2954], [2958], [2962], [2966], [2970], [2974], [2978], [2982], [2986], [2990], [2994], [2998], [3002], [3006], [3010], [3014], [3018], [3022], [3026], [3030], [3034], [3038], [3042], [3046], [3050], [3054], [3058], [3062], [3066], [3070], [3074], [3078], [3082], [3086], [3090], [3094], [3098], [3102], [3106], [3110], [3114], [3118], [3122], [3126], [3130], [3134], [3138], [3142], [3146], [3150], [3154], [3158], [3162], [3166], [3170], [3174], [3178], [3182], [3186], [3190], [3194], [3198], [3202], [3206], [3210], [3214], [3217], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3298], [3302], [3306], [3310], [3314], [3318], [3322], [3326], [3330], [3334], [3338], [3342], [3346], [3350], [3354], [3358], [3362], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3418], [3422], [3426], [3430], [3434], [3438], [3442], [3446], [3450], [3454], [3458], [3462], [3466], [3470], [3474], [3478], [3482], [3486], [3490], [3494], [3498], [3502], [3505], [3509], [3513], [3519], [3523], [3525], [3530], [3532], [3534], [3536], [3537], [3538], [3540], [3541] [2018-10-27 06:36:36,597 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:36:36,597 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:36:37,970 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:36:37,970 INFO L272 AbstractInterpreter]: Visited 813 different actions 1619 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 44 variables. [2018-10-27 06:36:37,971 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:36:37,972 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:36:37,972 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:36:37,972 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 [2018-10-27 06:36:37,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:36:37,979 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:36:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:36:38,279 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:36:39,075 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-10-27 06:36:39,076 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:36:39,791 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-10-27 06:36:39,812 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:36:39,812 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [10] total 11 [2018-10-27 06:36:39,813 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:36:39,814 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 06:36:39,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:36:39,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-10-27 06:36:39,814 INFO L87 Difference]: Start difference. First operand 34118 states and 44649 transitions. Second operand 3 states. [2018-10-27 06:36:44,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:36:44,466 INFO L93 Difference]: Finished difference Result 67395 states and 88816 transitions. [2018-10-27 06:36:44,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:36:44,466 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 985 [2018-10-27 06:36:44,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:36:44,590 INFO L225 Difference]: With dead ends: 67395 [2018-10-27 06:36:44,591 INFO L226 Difference]: Without dead ends: 34118 [2018-10-27 06:36:44,680 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1979 GetRequests, 1965 SyntacticMatches, 5 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-10-27 06:36:44,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34118 states. [2018-10-27 06:36:45,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34118 to 34118. [2018-10-27 06:36:45,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34118 states. [2018-10-27 06:36:45,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34118 states to 34118 states and 42405 transitions. [2018-10-27 06:36:45,296 INFO L78 Accepts]: Start accepts. Automaton has 34118 states and 42405 transitions. Word has length 985 [2018-10-27 06:36:45,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:36:45,297 INFO L481 AbstractCegarLoop]: Abstraction has 34118 states and 42405 transitions. [2018-10-27 06:36:45,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 06:36:45,298 INFO L276 IsEmpty]: Start isEmpty. Operand 34118 states and 42405 transitions. [2018-10-27 06:36:45,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1416 [2018-10-27 06:36:45,431 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:36:45,433 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:36:45,433 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:36:45,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:36:45,434 INFO L82 PathProgramCache]: Analyzing trace with hash -797557991, now seen corresponding path program 1 times [2018-10-27 06:36:45,434 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:36:45,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:36:45,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:36:45,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:36:45,436 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:36:45,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:36:46,953 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 615 proven. 66 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-27 06:36:46,953 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:36:46,953 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:36:46,954 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1416 with the following transitions: [2018-10-27 06:36:46,955 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [290], [294], [298], [302], [306], [310], [314], [318], [322], [326], [330], [334], [338], [342], [346], [350], [354], [358], [362], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [633], [641], [649], [657], [665], [673], [677], [679], [854], [858], [862], [866], [870], [874], [878], [882], [886], [890], [894], [898], [902], [906], [910], [914], [918], [922], [926], [930], [934], [938], [942], [946], [950], [954], [958], [962], [966], [970], [974], [978], [982], [986], [990], [994], [998], [1002], [1006], [1010], [1014], [1018], [1022], [1026], [1030], [1034], [1038], [1042], [1046], [1050], [1054], [1058], [1062], [1066], [1070], [1074], [1078], [1082], [1086], [1090], [1094], [1098], [1101], [1102], [1106], [1110], [1114], [1118], [1122], [1126], [1130], [1134], [1138], [1142], [1146], [1150], [1154], [1158], [1162], [1166], [1170], [1174], [1178], [1182], [1186], [1190], [1194], [1198], [1202], [1206], [1210], [1214], [1218], [1222], [1226], [1230], [1234], [1238], [1242], [1246], [1250], [1254], [1258], [1262], [1266], [1270], [1274], [1278], [1282], [1286], [1290], [1294], [1298], [1302], [1306], [1310], [1314], [1318], [1322], [1326], [1330], [1334], [1338], [1342], [1346], [1350], [1354], [1358], [1362], [1366], [1370], [1374], [1378], [1382], [1386], [1390], [1394], [1398], [1402], [1406], [1410], [1414], [1418], [1422], [1426], [1430], [1434], [1438], [1442], [1446], [1450], [1454], [1458], [1462], [1466], [1470], [1474], [1478], [1482], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1574], [1578], [1582], [1586], [1590], [1594], [1598], [1602], [1606], [1610], [1614], [1618], [1622], [1626], [1630], [1634], [1638], [1642], [1646], [1650], [1654], [1658], [1662], [1666], [1670], [1674], [1678], [1682], [1686], [1690], [1694], [1698], [1702], [1706], [1710], [1714], [1718], [1722], [1726], [1730], [1734], [1737], [1738], [1742], [1746], [1750], [1754], [1758], [1762], [1766], [1770], [1774], [1778], [1782], [1786], [1790], [1794], [1798], [1802], [1806], [1810], [1814], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1926], [1930], [1934], [1938], [1942], [1946], [1950], [1954], [1958], [1962], [1966], [1970], [1974], [1978], [1982], [1986], [1990], [1994], [1998], [2002], [2006], [2010], [2014], [2018], [2022], [2026], [2030], [2034], [2038], [2042], [2046], [2050], [2054], [2058], [2062], [2066], [2070], [2074], [2078], [2082], [2086], [2090], [2094], [2098], [2102], [2106], [2110], [2114], [2118], [2122], [2126], [2130], [2134], [2138], [2142], [2146], [2150], [2154], [2158], [2162], [2166], [2170], [2174], [2178], [2182], [2186], [2190], [2194], [2198], [2202], [2206], [2210], [2214], [2218], [2222], [2226], [2230], [2234], [2238], [2242], [2246], [2250], [2254], [2258], [2262], [2266], [2270], [2274], [2278], [2282], [2286], [2290], [2294], [2298], [2302], [2306], [2310], [2314], [2318], [2322], [2326], [2330], [2334], [2338], [2342], [2346], [2350], [2354], [2358], [2362], [2366], [2370], [2374], [2378], [2382], [2386], [2390], [2394], [2398], [2402], [2406], [2410], [2414], [2418], [2422], [2426], [2430], [2434], [2438], [2442], [2446], [2450], [2454], [2458], [2462], [2466], [2470], [2474], [2478], [2482], [2486], [2490], [2494], [2498], [2502], [2506], [2510], [2514], [2518], [2522], [2526], [2530], [2534], [2538], [2542], [2546], [2550], [2554], [2558], [2562], [2566], [2570], [2574], [2578], [2582], [2586], [2590], [2594], [2598], [2602], [2606], [2610], [2614], [2618], [2620], [2621], [2622], [2626], [2630], [2634], [2638], [2642], [2646], [2650], [2654], [2658], [2662], [2666], [2669], [2670], [2674], [2678], [2682], [2686], [2690], [2694], [2698], [2702], [2706], [2710], [2714], [2718], [2722], [2726], [2730], [2734], [2738], [2742], [2746], [2750], [2754], [2758], [2762], [2766], [2770], [2774], [2778], [2782], [2786], [2790], [2794], [2798], [2802], [2806], [2810], [2814], [2818], [2822], [2826], [2830], [2834], [2838], [2842], [2846], [2850], [2854], [2857], [2858], [2862], [2866], [2870], [2874], [2878], [2882], [2886], [2890], [2894], [2898], [2902], [2906], [2910], [2914], [2918], [2922], [2926], [2930], [2934], [2938], [2942], [2946], [2950], [2954], [2958], [2962], [2966], [2970], [2974], [2978], [2982], [2986], [2990], [2994], [2998], [3002], [3006], [3010], [3014], [3018], [3022], [3026], [3030], [3034], [3038], [3042], [3046], [3050], [3054], [3058], [3062], [3066], [3070], [3074], [3078], [3082], [3086], [3090], [3094], [3098], [3102], [3106], [3110], [3114], [3118], [3122], [3126], [3130], [3134], [3138], [3142], [3146], [3150], [3154], [3158], [3162], [3166], [3170], [3174], [3178], [3182], [3186], [3190], [3194], [3198], [3202], [3206], [3210], [3214], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3298], [3302], [3306], [3310], [3314], [3318], [3322], [3326], [3330], [3334], [3338], [3342], [3346], [3350], [3354], [3358], [3362], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3418], [3422], [3426], [3430], [3434], [3438], [3442], [3446], [3450], [3454], [3458], [3462], [3466], [3470], [3474], [3478], [3482], [3486], [3490], [3494], [3498], [3502], [3504], [3505], [3509], [3513], [3519], [3523], [3525], [3530], [3532], [3533], [3534], [3535], [3536], [3537], [3538], [3540], [3541] [2018-10-27 06:36:46,969 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:36:46,970 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:36:48,208 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:36:48,208 INFO L272 AbstractInterpreter]: Visited 814 different actions 1621 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 44 variables. [2018-10-27 06:36:48,217 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:36:48,217 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:36:48,217 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:36:48,217 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 06:36:48,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:36:48,407 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:36:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:36:48,821 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:36:49,939 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 185 proven. 2 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2018-10-27 06:36:49,940 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:36:50,189 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-27 06:36:51,090 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 615 proven. 66 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-27 06:36:51,112 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 06:36:51,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-27 06:36:51,113 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 06:36:51,115 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 06:36:51,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 06:36:51,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-10-27 06:36:51,115 INFO L87 Difference]: Start difference. First operand 34118 states and 42405 transitions. Second operand 9 states. [2018-10-27 06:37:03,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:37:03,890 INFO L93 Difference]: Finished difference Result 98519 states and 130251 transitions. [2018-10-27 06:37:03,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-27 06:37:03,893 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1415 [2018-10-27 06:37:03,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:37:04,145 INFO L225 Difference]: With dead ends: 98519 [2018-10-27 06:37:04,145 INFO L226 Difference]: Without dead ends: 65242 [2018-10-27 06:37:04,220 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2885 GetRequests, 2850 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2018-10-27 06:37:04,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65242 states. [2018-10-27 06:37:05,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65242 to 63619. [2018-10-27 06:37:05,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63619 states. [2018-10-27 06:37:05,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63619 states to 63619 states and 74583 transitions. [2018-10-27 06:37:05,305 INFO L78 Accepts]: Start accepts. Automaton has 63619 states and 74583 transitions. Word has length 1415 [2018-10-27 06:37:05,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:37:05,305 INFO L481 AbstractCegarLoop]: Abstraction has 63619 states and 74583 transitions. [2018-10-27 06:37:05,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 06:37:05,305 INFO L276 IsEmpty]: Start isEmpty. Operand 63619 states and 74583 transitions. [2018-10-27 06:37:05,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1455 [2018-10-27 06:37:05,470 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:37:05,471 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:37:05,471 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:37:05,471 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:37:05,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1591005910, now seen corresponding path program 1 times [2018-10-27 06:37:05,472 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:37:05,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:37:05,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:37:05,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:37:05,473 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:37:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:37:05,976 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-27 06:37:06,305 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-27 06:37:06,540 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-27 06:37:08,369 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 639 proven. 145 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-10-27 06:37:08,370 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:37:08,370 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:37:08,370 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1455 with the following transitions: [2018-10-27 06:37:08,371 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [290], [294], [298], [302], [306], [310], [314], [318], [322], [326], [330], [334], [338], [342], [346], [350], [354], [358], [362], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [633], [641], [649], [657], [665], [673], [677], [679], [854], [858], [862], [866], [870], [874], [878], [882], [886], [890], [894], [898], [902], [906], [910], [914], [918], [922], [926], [930], [934], [938], [942], [946], [950], [954], [958], [962], [966], [970], [974], [978], [982], [986], [990], [994], [998], [1002], [1006], [1010], [1014], [1018], [1022], [1026], [1030], [1034], [1038], [1042], [1046], [1050], [1054], [1058], [1062], [1066], [1070], [1074], [1078], [1082], [1086], [1090], [1094], [1098], [1101], [1102], [1106], [1110], [1114], [1118], [1122], [1126], [1130], [1134], [1138], [1142], [1146], [1150], [1154], [1158], [1162], [1166], [1170], [1174], [1178], [1182], [1186], [1190], [1194], [1198], [1202], [1206], [1210], [1214], [1218], [1222], [1226], [1230], [1234], [1238], [1242], [1246], [1250], [1254], [1258], [1262], [1266], [1270], [1274], [1278], [1282], [1286], [1290], [1294], [1298], [1302], [1306], [1310], [1314], [1318], [1322], [1326], [1330], [1334], [1338], [1342], [1346], [1350], [1354], [1358], [1362], [1366], [1370], [1374], [1378], [1382], [1386], [1390], [1394], [1398], [1402], [1406], [1410], [1414], [1418], [1422], [1426], [1430], [1434], [1438], [1442], [1446], [1450], [1454], [1458], [1462], [1466], [1470], [1474], [1478], [1482], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1574], [1578], [1582], [1586], [1590], [1594], [1598], [1602], [1606], [1610], [1614], [1618], [1622], [1626], [1630], [1634], [1638], [1642], [1646], [1650], [1654], [1658], [1662], [1666], [1670], [1674], [1678], [1682], [1686], [1690], [1694], [1698], [1702], [1706], [1710], [1714], [1718], [1722], [1726], [1730], [1734], [1737], [1738], [1742], [1746], [1750], [1754], [1758], [1762], [1766], [1770], [1774], [1778], [1782], [1786], [1790], [1794], [1798], [1802], [1806], [1810], [1814], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1926], [1930], [1934], [1938], [1942], [1946], [1950], [1954], [1958], [1962], [1966], [1970], [1974], [1978], [1982], [1986], [1990], [1994], [1998], [2002], [2006], [2010], [2014], [2018], [2022], [2026], [2030], [2034], [2038], [2042], [2046], [2050], [2054], [2058], [2062], [2066], [2070], [2074], [2078], [2082], [2086], [2090], [2094], [2098], [2102], [2106], [2110], [2114], [2118], [2122], [2126], [2130], [2134], [2138], [2142], [2146], [2150], [2154], [2158], [2162], [2166], [2170], [2174], [2178], [2182], [2186], [2190], [2194], [2198], [2202], [2206], [2210], [2214], [2218], [2222], [2226], [2230], [2234], [2238], [2242], [2246], [2250], [2254], [2258], [2262], [2266], [2270], [2274], [2278], [2282], [2286], [2290], [2294], [2298], [2302], [2306], [2310], [2314], [2318], [2322], [2326], [2330], [2334], [2338], [2342], [2346], [2350], [2354], [2358], [2362], [2366], [2370], [2374], [2378], [2382], [2386], [2390], [2394], [2398], [2402], [2406], [2410], [2414], [2418], [2422], [2426], [2430], [2434], [2438], [2442], [2446], [2450], [2454], [2458], [2462], [2466], [2470], [2474], [2478], [2482], [2486], [2490], [2494], [2498], [2502], [2506], [2510], [2514], [2518], [2522], [2526], [2530], [2534], [2538], [2542], [2546], [2550], [2554], [2558], [2562], [2566], [2570], [2574], [2578], [2582], [2586], [2590], [2594], [2598], [2602], [2606], [2610], [2614], [2618], [2620], [2621], [2622], [2626], [2630], [2634], [2638], [2642], [2646], [2650], [2654], [2658], [2662], [2666], [2669], [2670], [2674], [2678], [2682], [2686], [2690], [2694], [2698], [2702], [2706], [2710], [2714], [2717], [2718], [2722], [2726], [2730], [2734], [2738], [2742], [2746], [2750], [2754], [2758], [2762], [2766], [2770], [2774], [2778], [2782], [2786], [2790], [2794], [2798], [2802], [2806], [2810], [2814], [2818], [2822], [2826], [2830], [2834], [2838], [2842], [2846], [2850], [2854], [2858], [2862], [2866], [2870], [2874], [2878], [2882], [2885], [2886], [2890], [2894], [2898], [2902], [2906], [2910], [2914], [2918], [2922], [2926], [2930], [2934], [2938], [2942], [2946], [2950], [2954], [2958], [2962], [2966], [2970], [2974], [2978], [2982], [2986], [2990], [2994], [2998], [3002], [3006], [3010], [3014], [3018], [3022], [3026], [3030], [3034], [3038], [3042], [3046], [3050], [3054], [3058], [3062], [3066], [3070], [3074], [3078], [3082], [3086], [3090], [3094], [3098], [3102], [3106], [3110], [3114], [3118], [3122], [3126], [3130], [3134], [3138], [3142], [3146], [3150], [3154], [3158], [3162], [3166], [3170], [3174], [3178], [3182], [3186], [3190], [3194], [3198], [3202], [3206], [3210], [3214], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3298], [3302], [3306], [3310], [3314], [3318], [3322], [3326], [3330], [3334], [3338], [3342], [3346], [3350], [3354], [3358], [3362], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3418], [3422], [3426], [3430], [3434], [3438], [3442], [3446], [3450], [3454], [3458], [3462], [3466], [3470], [3474], [3478], [3482], [3486], [3490], [3494], [3498], [3502], [3504], [3505], [3509], [3513], [3519], [3523], [3525], [3530], [3532], [3533], [3534], [3535], [3536], [3537], [3538], [3540], [3541] [2018-10-27 06:37:08,385 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:37:08,386 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:37:11,243 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:37:11,243 INFO L272 AbstractInterpreter]: Visited 815 different actions 3252 times. Merged at 8 different actions 26 times. Never widened. Found 6 fixpoints after 2 different actions. Largest state had 44 variables. [2018-10-27 06:37:11,251 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:37:11,251 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:37:11,251 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:37:11,251 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 06:37:11,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:37:11,259 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:37:11,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:37:11,721 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:37:13,142 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 250 proven. 2 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2018-10-27 06:37:13,143 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:37:14,191 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 656 proven. 102 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-10-27 06:37:14,213 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 06:37:14,214 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 16 [2018-10-27 06:37:14,214 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 06:37:14,215 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-27 06:37:14,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-27 06:37:14,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2018-10-27 06:37:14,216 INFO L87 Difference]: Start difference. First operand 63619 states and 74583 transitions. Second operand 14 states. Received shutdown request... [2018-10-27 06:37:38,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-27 06:37:38,985 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 06:37:38,990 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 06:37:38,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 06:37:38 BoogieIcfgContainer [2018-10-27 06:37:38,991 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 06:37:38,991 INFO L168 Benchmark]: Toolchain (without parser) took 219471.28 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -774.7 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-27 06:37:38,992 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 06:37:38,993 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2382.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 211.4 MB). Peak memory consumption was 211.4 MB. Max. memory is 7.1 GB. [2018-10-27 06:37:38,994 INFO L168 Benchmark]: Boogie Procedure Inliner took 456.53 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 774.9 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 58.4 MB. Max. memory is 7.1 GB. [2018-10-27 06:37:38,995 INFO L168 Benchmark]: Boogie Preprocessor took 247.66 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2018-10-27 06:37:38,995 INFO L168 Benchmark]: RCFGBuilder took 9843.16 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 189.3 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -161.8 MB). Peak memory consumption was 695.7 MB. Max. memory is 7.1 GB. [2018-10-27 06:37:38,996 INFO L168 Benchmark]: TraceAbstraction took 206536.02 ms. Allocated memory was 2.5 GB in the beginning and 4.0 GB in the end (delta: 1.5 GB). Free memory was 2.4 GB in the beginning and 2.2 GB in the end (delta: 186.7 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-27 06:37:39,001 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2382.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 211.4 MB). Peak memory consumption was 211.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 456.53 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 774.9 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 58.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 247.66 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9843.16 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 189.3 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -161.8 MB). Peak memory consumption was 695.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206536.02 ms. Allocated memory was 2.5 GB in the beginning and 4.0 GB in the end (delta: 1.5 GB). Free memory was 2.4 GB in the beginning and 2.2 GB in the end (delta: 186.7 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 4742]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 4742). Cancelled while BasicCegarLoop was constructing difference of abstraction (63619states) and FLOYD_HOARE automaton (currently 42 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (91573 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 907 locations, 1 error locations. TIMEOUT Result, 206.4s OverallTime, 8 OverallIterations, 5 TraceHistogramMax, 156.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6303 SDtfs, 49641 SDslu, 3009 SDs, 0 SdLazy, 77166 SolverSat, 31120 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 95.6s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 12414 GetRequests, 12173 SyntacticMatches, 17 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3858 ImplicationChecksByTransitivity, 10.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63619occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 13.1s AbstIntTime, 6 AbstIntIterations, 1 AbstIntStrong, 0.9995243764971321 AbsIntWeakeningRatio, 0.04316546762589928 AbsIntAvgWeakeningVarsNumRemoved, 31.670263788968825 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 1778 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.7s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 19.0s InterpolantComputationTime, 13728 NumberOfCodeBlocks, 13728 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 19344 ConstructedInterpolants, 0 QuantifiedInterpolants, 52840471 SizeOfPredicates, 12 NumberOfNonLiveVariables, 7772 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 5254/5703 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown