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-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label52_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 14:20:02,475 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 14:20:02,478 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 14:20:02,496 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 14:20:02,496 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 14:20:02,497 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 14:20:02,499 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 14:20:02,500 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 14:20:02,502 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 14:20:02,504 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 14:20:02,506 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 14:20:02,508 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 14:20:02,509 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 14:20:02,510 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 14:20:02,511 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 14:20:02,512 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 14:20:02,512 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 14:20:02,514 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 14:20:02,516 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 14:20:02,518 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 14:20:02,519 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 14:20:02,520 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 14:20:02,522 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 14:20:02,523 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 14:20:02,523 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 14:20:02,524 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 14:20:02,525 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 14:20:02,526 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 14:20:02,526 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 14:20:02,527 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 14:20:02,528 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 14:20:02,528 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 14:20:02,528 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 14:20:02,529 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 14:20:02,530 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 14:20:02,530 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 14:20:02,531 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 14:20:02,552 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 14:20:02,553 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 14:20:02,554 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 14:20:02,554 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 14:20:02,554 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 14:20:02,554 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 14:20:02,555 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 14:20:02,555 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 14:20:02,555 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 14:20:02,555 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 14:20:02,555 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 14:20:02,555 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 14:20:02,556 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 14:20:02,556 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 14:20:02,557 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 14:20:02,557 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 14:20:02,557 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 14:20:02,557 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 14:20:02,557 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 14:20:02,558 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 14:20:02,558 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 14:20:02,558 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 14:20:02,558 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 14:20:02,558 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 14:20:02,559 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 14:20:02,559 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 14:20:02,559 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 14:20:02,559 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 14:20:02,559 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 14:20:02,560 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 14:20:02,560 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 14:20:02,560 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 14:20:02,560 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 14:20:02,560 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 14:20:02,605 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 14:20:02,619 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 14:20:02,623 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 14:20:02,625 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 14:20:02,625 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 14:20:02,626 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label52_true-unreach-call.c [2018-10-27 14:20:02,693 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ffee009c7/880042d719b94e3d961a82d1f4e47053/FLAGefa6e4a80 [2018-10-27 14:20:03,444 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 14:20:03,445 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label52_true-unreach-call.c [2018-10-27 14:20:03,480 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ffee009c7/880042d719b94e3d961a82d1f4e47053/FLAGefa6e4a80 [2018-10-27 14:20:03,497 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ffee009c7/880042d719b94e3d961a82d1f4e47053 [2018-10-27 14:20:03,509 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 14:20:03,511 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 14:20:03,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 14:20:03,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 14:20:03,516 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 14:20:03,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:20:03" (1/1) ... [2018-10-27 14:20:03,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a444982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:20:03, skipping insertion in model container [2018-10-27 14:20:03,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:20:03" (1/1) ... [2018-10-27 14:20:03,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 14:20:03,728 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 14:20:05,288 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:20:05,292 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 14:20:06,165 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:20:06,205 INFO L193 MainTranslator]: Completed translation [2018-10-27 14:20:06,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:20:06 WrapperNode [2018-10-27 14:20:06,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 14:20:06,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 14:20:06,207 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 14:20:06,208 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 14:20:06,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:20:06" (1/1) ... [2018-10-27 14:20:06,304 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:20:06" (1/1) ... [2018-10-27 14:20:06,819 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 14:20:06,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 14:20:06,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 14:20:06,820 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 14:20:06,831 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:20:06" (1/1) ... [2018-10-27 14:20:06,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:20:06" (1/1) ... [2018-10-27 14:20:06,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:20:06" (1/1) ... [2018-10-27 14:20:06,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:20:06" (1/1) ... [2018-10-27 14:20:07,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:20:06" (1/1) ... [2018-10-27 14:20:07,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:20:06" (1/1) ... [2018-10-27 14:20:07,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:20:06" (1/1) ... [2018-10-27 14:20:07,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 14:20:07,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 14:20:07,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 14:20:07,138 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 14:20:07,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:20:06" (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 14:20:07,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 14:20:07,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 14:20:07,212 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 14:20:07,213 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 14:20:07,213 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 14:20:07,213 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 14:20:07,213 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 14:20:07,213 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 14:20:07,214 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 14:20:07,214 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 14:20:07,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 14:20:07,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 14:20:07,214 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 14:20:07,216 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 14:20:21,339 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 14:20:21,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:20:21 BoogieIcfgContainer [2018-10-27 14:20:21,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 14:20:21,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 14:20:21,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 14:20:21,345 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 14:20:21,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:20:03" (1/3) ... [2018-10-27 14:20:21,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@117e2c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:20:21, skipping insertion in model container [2018-10-27 14:20:21,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:20:06" (2/3) ... [2018-10-27 14:20:21,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@117e2c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:20:21, skipping insertion in model container [2018-10-27 14:20:21,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:20:21" (3/3) ... [2018-10-27 14:20:21,349 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label52_true-unreach-call.c [2018-10-27 14:20:21,359 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 14:20:21,369 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 14:20:21,386 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 14:20:21,435 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 14:20:21,435 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 14:20:21,435 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 14:20:21,435 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 14:20:21,435 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 14:20:21,436 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 14:20:21,436 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 14:20:21,436 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 14:20:21,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-27 14:20:21,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-27 14:20:21,489 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:20:21,490 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] [2018-10-27 14:20:21,492 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:20:21,498 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:20:21,499 INFO L82 PathProgramCache]: Analyzing trace with hash -774157709, now seen corresponding path program 1 times [2018-10-27 14:20:21,501 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:20:21,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:20:21,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:20:21,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:20:21,557 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:20:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:20:22,000 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 14:20:22,098 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 14:20:22,100 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:20:22,101 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 14:20:22,101 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:20:22,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 14:20:22,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 14:20:22,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 14:20:22,128 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-10-27 14:20:32,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:20:32,673 INFO L93 Difference]: Finished difference Result 3093 states and 5715 transitions. [2018-10-27 14:20:32,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 14:20:32,684 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2018-10-27 14:20:32,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:20:32,725 INFO L225 Difference]: With dead ends: 3093 [2018-10-27 14:20:32,726 INFO L226 Difference]: Without dead ends: 1971 [2018-10-27 14:20:32,737 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 14:20:32,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1971 states. [2018-10-27 14:20:32,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1971 to 1957. [2018-10-27 14:20:32,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1957 states. [2018-10-27 14:20:32,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 3535 transitions. [2018-10-27 14:20:32,914 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 3535 transitions. Word has length 71 [2018-10-27 14:20:32,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:20:32,915 INFO L481 AbstractCegarLoop]: Abstraction has 1957 states and 3535 transitions. [2018-10-27 14:20:32,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 14:20:32,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 3535 transitions. [2018-10-27 14:20:32,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-27 14:20:32,931 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:20:32,932 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:20:32,932 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:20:32,933 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:20:32,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1438454356, now seen corresponding path program 1 times [2018-10-27 14:20:32,934 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:20:32,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:20:32,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:20:32,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:20:32,936 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:20:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:20:33,393 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:20:33,393 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:20:33,393 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 14:20:33,394 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:20:33,396 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:20:33,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:20:33,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:20:33,396 INFO L87 Difference]: Start difference. First operand 1957 states and 3535 transitions. Second operand 6 states. [2018-10-27 14:20:53,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:20:53,800 INFO L93 Difference]: Finished difference Result 5630 states and 10205 transitions. [2018-10-27 14:20:53,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 14:20:53,810 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2018-10-27 14:20:53,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:20:53,834 INFO L225 Difference]: With dead ends: 5630 [2018-10-27 14:20:53,834 INFO L226 Difference]: Without dead ends: 3679 [2018-10-27 14:20:53,844 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 14:20:53,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3679 states. [2018-10-27 14:20:53,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3679 to 3636. [2018-10-27 14:20:53,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3636 states. [2018-10-27 14:20:53,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3636 states to 3636 states and 5828 transitions. [2018-10-27 14:20:53,950 INFO L78 Accepts]: Start accepts. Automaton has 3636 states and 5828 transitions. Word has length 154 [2018-10-27 14:20:53,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:20:53,950 INFO L481 AbstractCegarLoop]: Abstraction has 3636 states and 5828 transitions. [2018-10-27 14:20:53,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 14:20:53,951 INFO L276 IsEmpty]: Start isEmpty. Operand 3636 states and 5828 transitions. [2018-10-27 14:20:53,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-27 14:20:53,961 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:20:53,961 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 14:20:53,961 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:20:53,961 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:20:53,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1449223166, now seen corresponding path program 1 times [2018-10-27 14:20:53,965 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:20:53,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:20:53,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:20:53,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:20:53,967 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:20:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:20:54,221 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:20:54,222 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:20:54,222 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 14:20:54,222 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:20:54,223 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 14:20:54,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 14:20:54,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 14:20:54,224 INFO L87 Difference]: Start difference. First operand 3636 states and 5828 transitions. Second operand 5 states. [2018-10-27 14:21:18,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:21:18,601 INFO L93 Difference]: Finished difference Result 13465 states and 21919 transitions. [2018-10-27 14:21:18,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 14:21:18,603 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2018-10-27 14:21:18,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:21:18,657 INFO L225 Difference]: With dead ends: 13465 [2018-10-27 14:21:18,658 INFO L226 Difference]: Without dead ends: 9835 [2018-10-27 14:21:18,676 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 14:21:18,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9835 states. [2018-10-27 14:21:18,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9835 to 9640. [2018-10-27 14:21:18,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9640 states. [2018-10-27 14:21:18,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9640 states to 9640 states and 14660 transitions. [2018-10-27 14:21:18,915 INFO L78 Accepts]: Start accepts. Automaton has 9640 states and 14660 transitions. Word has length 161 [2018-10-27 14:21:18,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:21:18,915 INFO L481 AbstractCegarLoop]: Abstraction has 9640 states and 14660 transitions. [2018-10-27 14:21:18,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 14:21:18,916 INFO L276 IsEmpty]: Start isEmpty. Operand 9640 states and 14660 transitions. [2018-10-27 14:21:18,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-27 14:21:18,920 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:21:18,920 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 14:21:18,920 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:21:18,921 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:21:18,921 INFO L82 PathProgramCache]: Analyzing trace with hash 2036148572, now seen corresponding path program 1 times [2018-10-27 14:21:18,921 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:21:18,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:21:18,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:21:18,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:21:18,922 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:21:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:21:19,104 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:21:19,104 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:21:19,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 14:21:19,105 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:21:19,105 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 14:21:19,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 14:21:19,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 14:21:19,106 INFO L87 Difference]: Start difference. First operand 9640 states and 14660 transitions. Second operand 5 states. [2018-10-27 14:21:36,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:21:36,033 INFO L93 Difference]: Finished difference Result 29019 states and 46089 transitions. [2018-10-27 14:21:36,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 14:21:36,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2018-10-27 14:21:36,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:21:36,115 INFO L225 Difference]: With dead ends: 29019 [2018-10-27 14:21:36,116 INFO L226 Difference]: Without dead ends: 19385 [2018-10-27 14:21:36,147 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 14:21:36,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19385 states. [2018-10-27 14:21:36,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19385 to 19048. [2018-10-27 14:21:36,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19048 states. [2018-10-27 14:21:36,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19048 states to 19048 states and 27570 transitions. [2018-10-27 14:21:36,634 INFO L78 Accepts]: Start accepts. Automaton has 19048 states and 27570 transitions. Word has length 170 [2018-10-27 14:21:36,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:21:36,635 INFO L481 AbstractCegarLoop]: Abstraction has 19048 states and 27570 transitions. [2018-10-27 14:21:36,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 14:21:36,635 INFO L276 IsEmpty]: Start isEmpty. Operand 19048 states and 27570 transitions. [2018-10-27 14:21:36,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-27 14:21:36,643 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:21:36,643 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 14:21:36,643 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:21:36,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:21:36,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1111253638, now seen corresponding path program 1 times [2018-10-27 14:21:36,644 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:21:36,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:21:36,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:21:36,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:21:36,645 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:21:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:21:36,955 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 14:21:37,335 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:21:37,335 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:21:37,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 14:21:37,336 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:21:37,336 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:21:37,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:21:37,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:21:37,337 INFO L87 Difference]: Start difference. First operand 19048 states and 27570 transitions. Second operand 6 states. [2018-10-27 14:21:51,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:21:51,594 INFO L93 Difference]: Finished difference Result 58353 states and 91829 transitions. [2018-10-27 14:21:51,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 14:21:51,599 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2018-10-27 14:21:51,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:21:51,765 INFO L225 Difference]: With dead ends: 58353 [2018-10-27 14:21:51,765 INFO L226 Difference]: Without dead ends: 39311 [2018-10-27 14:21:51,848 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 14:21:51,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39311 states. [2018-10-27 14:21:52,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39311 to 39136. [2018-10-27 14:21:52,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39136 states. [2018-10-27 14:21:52,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39136 states to 39136 states and 54978 transitions. [2018-10-27 14:21:52,751 INFO L78 Accepts]: Start accepts. Automaton has 39136 states and 54978 transitions. Word has length 181 [2018-10-27 14:21:52,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:21:52,751 INFO L481 AbstractCegarLoop]: Abstraction has 39136 states and 54978 transitions. [2018-10-27 14:21:52,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 14:21:52,751 INFO L276 IsEmpty]: Start isEmpty. Operand 39136 states and 54978 transitions. [2018-10-27 14:21:52,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-27 14:21:52,761 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:21:52,761 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 14:21:52,762 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:21:52,762 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:21:52,762 INFO L82 PathProgramCache]: Analyzing trace with hash -747971991, now seen corresponding path program 1 times [2018-10-27 14:21:52,762 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:21:52,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:21:52,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:21:52,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:21:52,764 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:21:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:21:53,047 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 14:21:53,433 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:21:53,434 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:21:53,434 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 14:21:53,434 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:21:53,435 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:21:53,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:21:53,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:21:53,435 INFO L87 Difference]: Start difference. First operand 39136 states and 54978 transitions. Second operand 6 states. [2018-10-27 14:22:05,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:22:05,494 INFO L93 Difference]: Finished difference Result 98860 states and 157126 transitions. [2018-10-27 14:22:05,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 14:22:05,499 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 190 [2018-10-27 14:22:05,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:22:05,793 INFO L225 Difference]: With dead ends: 98860 [2018-10-27 14:22:05,793 INFO L226 Difference]: Without dead ends: 59730 [2018-10-27 14:22:05,919 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 14:22:05,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59730 states. [2018-10-27 14:22:07,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59730 to 59501. [2018-10-27 14:22:07,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59501 states. [2018-10-27 14:22:07,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59501 states to 59501 states and 85525 transitions. [2018-10-27 14:22:07,991 INFO L78 Accepts]: Start accepts. Automaton has 59501 states and 85525 transitions. Word has length 190 [2018-10-27 14:22:07,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:22:07,992 INFO L481 AbstractCegarLoop]: Abstraction has 59501 states and 85525 transitions. [2018-10-27 14:22:07,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 14:22:07,992 INFO L276 IsEmpty]: Start isEmpty. Operand 59501 states and 85525 transitions. [2018-10-27 14:22:08,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-10-27 14:22:08,032 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:22:08,032 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 14:22:08,032 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:22:08,033 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:22:08,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1403677423, now seen corresponding path program 1 times [2018-10-27 14:22:08,033 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:22:08,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:22:08,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:22:08,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:22:08,035 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:22:08,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:22:08,387 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 14:22:08,835 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:22:08,835 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:22:08,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 14:22:08,836 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:22:08,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:22:08,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:22:08,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:22:08,838 INFO L87 Difference]: Start difference. First operand 59501 states and 85525 transitions. Second operand 6 states. [2018-10-27 14:22:17,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:22:17,606 INFO L93 Difference]: Finished difference Result 125382 states and 184783 transitions. [2018-10-27 14:22:17,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 14:22:17,606 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 265 [2018-10-27 14:22:17,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:22:17,829 INFO L225 Difference]: With dead ends: 125382 [2018-10-27 14:22:17,829 INFO L226 Difference]: Without dead ends: 65887 [2018-10-27 14:22:17,985 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 14:22:18,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65887 states. [2018-10-27 14:22:19,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65887 to 65760. [2018-10-27 14:22:19,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65760 states. [2018-10-27 14:22:19,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65760 states to 65760 states and 88954 transitions. [2018-10-27 14:22:19,731 INFO L78 Accepts]: Start accepts. Automaton has 65760 states and 88954 transitions. Word has length 265 [2018-10-27 14:22:19,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:22:19,731 INFO L481 AbstractCegarLoop]: Abstraction has 65760 states and 88954 transitions. [2018-10-27 14:22:19,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 14:22:19,732 INFO L276 IsEmpty]: Start isEmpty. Operand 65760 states and 88954 transitions. [2018-10-27 14:22:19,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-10-27 14:22:19,763 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:22:19,763 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 14:22:19,763 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:22:19,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:22:19,764 INFO L82 PathProgramCache]: Analyzing trace with hash -2001119171, now seen corresponding path program 1 times [2018-10-27 14:22:19,764 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:22:19,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:22:19,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:22:19,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:22:19,765 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:22:19,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:22:20,144 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:22:20,144 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:22:20,145 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 14:22:20,145 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:22:20,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 14:22:20,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 14:22:20,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 14:22:20,146 INFO L87 Difference]: Start difference. First operand 65760 states and 88954 transitions. Second operand 5 states. [2018-10-27 14:22:40,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:22:40,722 INFO L93 Difference]: Finished difference Result 167425 states and 237485 transitions. [2018-10-27 14:22:40,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 14:22:40,723 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 271 [2018-10-27 14:22:40,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:22:41,049 INFO L225 Difference]: With dead ends: 167425 [2018-10-27 14:22:41,049 INFO L226 Difference]: Without dead ends: 101671 [2018-10-27 14:22:41,181 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 14:22:41,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101671 states. [2018-10-27 14:22:42,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101671 to 101471. [2018-10-27 14:22:42,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101471 states. [2018-10-27 14:22:42,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101471 states to 101471 states and 142896 transitions. [2018-10-27 14:22:42,946 INFO L78 Accepts]: Start accepts. Automaton has 101471 states and 142896 transitions. Word has length 271 [2018-10-27 14:22:42,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:22:42,946 INFO L481 AbstractCegarLoop]: Abstraction has 101471 states and 142896 transitions. [2018-10-27 14:22:42,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 14:22:42,947 INFO L276 IsEmpty]: Start isEmpty. Operand 101471 states and 142896 transitions. [2018-10-27 14:22:42,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-10-27 14:22:42,986 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:22:42,986 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:22:42,987 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:22:42,987 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:22:42,987 INFO L82 PathProgramCache]: Analyzing trace with hash -227591905, now seen corresponding path program 1 times [2018-10-27 14:22:42,987 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:22:42,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:22:42,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:22:42,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:22:42,988 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:22:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:22:44,399 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 205 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:22:44,400 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 14:22:44,400 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 14:22:44,401 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 283 with the following transitions: [2018-10-27 14:22:44,404 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3043], [3051], [3059], [3067], [3075], [3083], [3091], [3095], [3097], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3221], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3358], [3363], [3365], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-27 14:22:44,481 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 14:22:44,482 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 14:22:45,340 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 14:22:45,344 INFO L272 AbstractInterpreter]: Visited 124 different actions 124 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-27 14:22:45,386 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:22:45,386 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 14:22:46,377 INFO L227 lantSequenceWeakener]: Weakened 258 states. On average, predicates are now at 71.77% of their original sizes. [2018-10-27 14:22:46,377 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 14:22:46,903 INFO L415 sIntCurrentIteration]: We unified 281 AI predicates to 281 [2018-10-27 14:22:46,903 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 14:22:46,904 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 14:22:46,905 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2018-10-27 14:22:46,905 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:22:46,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 14:22:46,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 14:22:46,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-10-27 14:22:46,906 INFO L87 Difference]: Start difference. First operand 101471 states and 142896 transitions. Second operand 10 states. [2018-10-27 14:22:52,038 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown