java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label34_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 06:09:48,630 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 06:09:48,632 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 06:09:48,651 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 06:09:48,651 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 06:09:48,652 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 06:09:48,653 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 06:09:48,656 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 06:09:48,658 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 06:09:48,659 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 06:09:48,661 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 06:09:48,662 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 06:09:48,663 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 06:09:48,664 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 06:09:48,665 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 06:09:48,666 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 06:09:48,667 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 06:09:48,676 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 06:09:48,681 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 06:09:48,682 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 06:09:48,685 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 06:09:48,686 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 06:09:48,690 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 06:09:48,690 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 06:09:48,691 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 06:09:48,692 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 06:09:48,692 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 06:09:48,695 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 06:09:48,696 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 06:09:48,697 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 06:09:48,697 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 06:09:48,699 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 06:09:48,700 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 06:09:48,700 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 06:09:48,701 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 06:09:48,702 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 06:09:48,702 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 06:09:48,730 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 06:09:48,731 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 06:09:48,732 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 06:09:48,732 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 06:09:48,732 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 06:09:48,733 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 06:09:48,733 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 06:09:48,733 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 06:09:48,733 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 06:09:48,733 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 06:09:48,734 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 06:09:48,734 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 06:09:48,734 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 06:09:48,735 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 06:09:48,735 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 06:09:48,735 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 06:09:48,736 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 06:09:48,737 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 06:09:48,737 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 06:09:48,737 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 06:09:48,737 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 06:09:48,737 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 06:09:48,738 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 06:09:48,738 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 06:09:48,738 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 06:09:48,738 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 06:09:48,738 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 06:09:48,738 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 06:09:48,739 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 06:09:48,739 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 06:09:48,739 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 06:09:48,739 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 06:09:48,739 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 06:09:48,739 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 06:09:48,740 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 06:09:48,740 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 06:09:48,790 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 06:09:48,803 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 06:09:48,807 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 06:09:48,809 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 06:09:48,809 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 06:09:48,810 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label34_false-unreach-call.c [2018-11-07 06:09:48,889 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fbdae8f4/8d381c4045c04033825a6bd3ef2be7dd/FLAG4517d283a [2018-11-07 06:09:49,636 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 06:09:49,637 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label34_false-unreach-call.c [2018-11-07 06:09:49,670 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fbdae8f4/8d381c4045c04033825a6bd3ef2be7dd/FLAG4517d283a [2018-11-07 06:09:49,692 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fbdae8f4/8d381c4045c04033825a6bd3ef2be7dd [2018-11-07 06:09:49,706 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 06:09:49,711 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 06:09:49,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 06:09:49,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 06:09:49,717 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 06:09:49,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:09:49" (1/1) ... [2018-11-07 06:09:49,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f1109e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:09:49, skipping insertion in model container [2018-11-07 06:09:49,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:09:49" (1/1) ... [2018-11-07 06:09:49,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 06:09:49,913 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 06:09:51,349 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 06:09:51,355 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 06:09:51,957 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 06:09:51,990 INFO L193 MainTranslator]: Completed translation [2018-11-07 06:09:51,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:09:51 WrapperNode [2018-11-07 06:09:51,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 06:09:51,992 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 06:09:51,992 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 06:09:51,992 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 06:09:52,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:09:51" (1/1) ... [2018-11-07 06:09:52,316 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:09:51" (1/1) ... [2018-11-07 06:09:52,327 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 06:09:52,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 06:09:52,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 06:09:52,328 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 06:09:52,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:09:51" (1/1) ... [2018-11-07 06:09:52,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:09:51" (1/1) ... [2018-11-07 06:09:52,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:09:51" (1/1) ... [2018-11-07 06:09:52,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:09:51" (1/1) ... [2018-11-07 06:09:52,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:09:51" (1/1) ... [2018-11-07 06:09:52,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:09:51" (1/1) ... [2018-11-07 06:09:52,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:09:51" (1/1) ... [2018-11-07 06:09:52,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 06:09:52,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 06:09:52,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 06:09:52,562 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 06:09:52,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:09:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 06:09:52,631 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 06:09:52,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 06:09:52,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 06:09:52,632 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 06:09:52,632 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 06:09:52,633 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 06:09:52,633 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 06:09:52,633 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 06:09:52,633 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 06:09:52,633 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 06:09:52,633 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 06:09:52,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 06:09:52,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 06:09:52,635 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 06:09:52,635 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 06:10:01,135 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 06:10:01,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:10:01 BoogieIcfgContainer [2018-11-07 06:10:01,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 06:10:01,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 06:10:01,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 06:10:01,140 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 06:10:01,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:09:49" (1/3) ... [2018-11-07 06:10:01,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d08ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:10:01, skipping insertion in model container [2018-11-07 06:10:01,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:09:51" (2/3) ... [2018-11-07 06:10:01,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d08ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:10:01, skipping insertion in model container [2018-11-07 06:10:01,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:10:01" (3/3) ... [2018-11-07 06:10:01,144 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label34_false-unreach-call.c [2018-11-07 06:10:01,156 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 06:10:01,167 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 06:10:01,187 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 06:10:01,233 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 06:10:01,234 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 06:10:01,234 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 06:10:01,234 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 06:10:01,234 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 06:10:01,234 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 06:10:01,234 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 06:10:01,235 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 06:10:01,275 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-07 06:10:01,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-07 06:10:01,283 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:10:01,284 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] [2018-11-07 06:10:01,286 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:10:01,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:10:01,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1388139973, now seen corresponding path program 1 times [2018-11-07 06:10:01,296 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:10:01,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:10:01,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:10:01,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:10:01,359 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:10:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:10:01,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:10:01,698 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:10:01,698 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 06:10:01,699 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:10:01,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 06:10:01,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 06:10:01,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 06:10:01,726 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 4 states. [2018-11-07 06:10:13,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:10:13,786 INFO L93 Difference]: Finished difference Result 3234 states and 6255 transitions. [2018-11-07 06:10:13,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 06:10:13,793 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-07 06:10:13,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:10:13,842 INFO L225 Difference]: With dead ends: 3234 [2018-11-07 06:10:13,843 INFO L226 Difference]: Without dead ends: 2388 [2018-11-07 06:10:13,854 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 06:10:13,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2018-11-07 06:10:14,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2388. [2018-11-07 06:10:14,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2388 states. [2018-11-07 06:10:14,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 4022 transitions. [2018-11-07 06:10:14,050 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 4022 transitions. Word has length 23 [2018-11-07 06:10:14,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:10:14,051 INFO L480 AbstractCegarLoop]: Abstraction has 2388 states and 4022 transitions. [2018-11-07 06:10:14,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 06:10:14,052 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 4022 transitions. [2018-11-07 06:10:14,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-11-07 06:10:14,062 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:10:14,062 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 06:10:14,063 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:10:14,063 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:10:14,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1150464296, now seen corresponding path program 1 times [2018-11-07 06:10:14,063 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:10:14,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:10:14,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:10:14,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:10:14,065 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:10:14,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:10:14,648 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:10:14,648 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:10:14,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 06:10:14,649 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:10:14,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 06:10:14,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 06:10:14,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 06:10:14,654 INFO L87 Difference]: Start difference. First operand 2388 states and 4022 transitions. Second operand 6 states. [2018-11-07 06:10:29,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:10:29,503 INFO L93 Difference]: Finished difference Result 9453 states and 16261 transitions. [2018-11-07 06:10:29,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 06:10:29,509 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2018-11-07 06:10:29,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:10:29,559 INFO L225 Difference]: With dead ends: 9453 [2018-11-07 06:10:29,560 INFO L226 Difference]: Without dead ends: 7071 [2018-11-07 06:10:29,576 INFO L604 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 [2018-11-07 06:10:29,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7071 states. [2018-11-07 06:10:29,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7071 to 7023. [2018-11-07 06:10:29,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7023 states. [2018-11-07 06:10:29,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7023 states to 7023 states and 10536 transitions. [2018-11-07 06:10:29,796 INFO L78 Accepts]: Start accepts. Automaton has 7023 states and 10536 transitions. Word has length 123 [2018-11-07 06:10:29,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:10:29,797 INFO L480 AbstractCegarLoop]: Abstraction has 7023 states and 10536 transitions. [2018-11-07 06:10:29,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 06:10:29,797 INFO L276 IsEmpty]: Start isEmpty. Operand 7023 states and 10536 transitions. [2018-11-07 06:10:29,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-11-07 06:10:29,821 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:10:29,821 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 06:10:29,821 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:10:29,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:10:29,823 INFO L82 PathProgramCache]: Analyzing trace with hash -521586516, now seen corresponding path program 1 times [2018-11-07 06:10:29,823 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:10:29,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:10:29,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:10:29,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:10:29,824 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:10:29,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:10:30,162 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:10:30,163 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:10:30,163 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 06:10:30,163 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:10:30,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 06:10:30,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 06:10:30,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 06:10:30,165 INFO L87 Difference]: Start difference. First operand 7023 states and 10536 transitions. Second operand 4 states. [2018-11-07 06:10:38,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:10:38,251 INFO L93 Difference]: Finished difference Result 27807 states and 43318 transitions. [2018-11-07 06:10:38,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 06:10:38,252 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2018-11-07 06:10:38,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:10:38,406 INFO L225 Difference]: With dead ends: 27807 [2018-11-07 06:10:38,406 INFO L226 Difference]: Without dead ends: 20790 [2018-11-07 06:10:38,449 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 06:10:38,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20790 states. [2018-11-07 06:10:38,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20790 to 20790. [2018-11-07 06:10:38,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20790 states. [2018-11-07 06:10:39,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20790 states to 20790 states and 31070 transitions. [2018-11-07 06:10:39,046 INFO L78 Accepts]: Start accepts. Automaton has 20790 states and 31070 transitions. Word has length 173 [2018-11-07 06:10:39,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:10:39,047 INFO L480 AbstractCegarLoop]: Abstraction has 20790 states and 31070 transitions. [2018-11-07 06:10:39,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 06:10:39,048 INFO L276 IsEmpty]: Start isEmpty. Operand 20790 states and 31070 transitions. [2018-11-07 06:10:39,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-11-07 06:10:39,076 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:10:39,077 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:10:39,077 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:10:39,077 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:10:39,077 INFO L82 PathProgramCache]: Analyzing trace with hash 640704029, now seen corresponding path program 1 times [2018-11-07 06:10:39,078 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:10:39,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:10:39,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:10:39,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:10:39,079 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:10:39,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:10:39,506 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-11-07 06:10:39,507 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:10:39,507 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 06:10:39,507 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:10:39,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 06:10:39,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 06:10:39,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 06:10:39,509 INFO L87 Difference]: Start difference. First operand 20790 states and 31070 transitions. Second operand 4 states. [2018-11-07 06:10:49,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:10:49,544 INFO L93 Difference]: Finished difference Result 75182 states and 120688 transitions. [2018-11-07 06:10:49,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 06:10:49,554 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 291 [2018-11-07 06:10:49,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:10:49,817 INFO L225 Difference]: With dead ends: 75182 [2018-11-07 06:10:49,817 INFO L226 Difference]: Without dead ends: 54398 [2018-11-07 06:10:49,915 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 06:10:49,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54398 states. [2018-11-07 06:10:51,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54398 to 54395. [2018-11-07 06:10:51,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54395 states. [2018-11-07 06:10:51,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54395 states to 54395 states and 80117 transitions. [2018-11-07 06:10:51,332 INFO L78 Accepts]: Start accepts. Automaton has 54395 states and 80117 transitions. Word has length 291 [2018-11-07 06:10:51,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:10:51,333 INFO L480 AbstractCegarLoop]: Abstraction has 54395 states and 80117 transitions. [2018-11-07 06:10:51,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 06:10:51,333 INFO L276 IsEmpty]: Start isEmpty. Operand 54395 states and 80117 transitions. [2018-11-07 06:10:51,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-11-07 06:10:51,384 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:10:51,384 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 06:10:51,385 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:10:51,385 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:10:51,385 INFO L82 PathProgramCache]: Analyzing trace with hash -627152535, now seen corresponding path program 1 times [2018-11-07 06:10:51,385 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:10:51,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:10:51,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:10:51,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:10:51,387 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:10:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:10:51,918 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:10:51,919 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:10:51,919 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 06:10:51,919 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:10:51,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 06:10:51,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 06:10:51,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 06:10:51,922 INFO L87 Difference]: Start difference. First operand 54395 states and 80117 transitions. Second operand 5 states. [2018-11-07 06:11:02,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:11:02,916 INFO L93 Difference]: Finished difference Result 162748 states and 254491 transitions. [2018-11-07 06:11:02,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 06:11:02,918 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 292 [2018-11-07 06:11:02,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:11:03,487 INFO L225 Difference]: With dead ends: 162748 [2018-11-07 06:11:03,488 INFO L226 Difference]: Without dead ends: 108359 [2018-11-07 06:11:03,644 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 06:11:03,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108359 states. [2018-11-07 06:11:06,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108359 to 107357. [2018-11-07 06:11:06,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107357 states. [2018-11-07 06:11:06,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107357 states to 107357 states and 156514 transitions. [2018-11-07 06:11:06,965 INFO L78 Accepts]: Start accepts. Automaton has 107357 states and 156514 transitions. Word has length 292 [2018-11-07 06:11:06,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:11:06,966 INFO L480 AbstractCegarLoop]: Abstraction has 107357 states and 156514 transitions. [2018-11-07 06:11:06,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 06:11:06,967 INFO L276 IsEmpty]: Start isEmpty. Operand 107357 states and 156514 transitions. [2018-11-07 06:11:07,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2018-11-07 06:11:07,075 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:11:07,076 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:11:07,076 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:11:07,076 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:11:07,077 INFO L82 PathProgramCache]: Analyzing trace with hash 123415015, now seen corresponding path program 1 times [2018-11-07 06:11:07,077 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:11:07,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:11:07,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:11:07,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:11:07,078 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:11:07,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:11:07,403 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 06:11:07,686 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 32 proven. 98 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 06:11:07,687 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:11:07,687 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:11:07,688 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 396 with the following transitions: [2018-11-07 06:11:07,691 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1951], [1953], [1956], [1964], [1972], [1980], [1988], [1996], [2004], [2012], [2020], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2492], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2997], [3001], [3005], [3009], [3013], [3017], [3021], [3025], [3029], [3033], [3037], [3041], [3045], [3049], [3053], [3057], [3061], [3065], [3069], [3073], [3077], [3081], [3085], [3089], [3093], [3097], [3101], [3105], [3109], [3113], [3117], [3121], [3125], [3129], [3133], [3137], [3141], [3145], [3149], [3153], [3156], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 06:11:07,761 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:11:07,762 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:11:08,777 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:11:08,779 INFO L272 AbstractInterpreter]: Visited 274 different actions 274 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 06:11:08,830 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:11:08,830 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:11:09,696 INFO L227 lantSequenceWeakener]: Weakened 386 states. On average, predicates are now at 75.03% of their original sizes. [2018-11-07 06:11:09,696 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:11:09,960 INFO L415 sIntCurrentIteration]: We unified 394 AI predicates to 394 [2018-11-07 06:11:09,960 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:11:09,961 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:11:09,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 06:11:09,962 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:11:09,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 06:11:09,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 06:11:09,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 06:11:09,963 INFO L87 Difference]: Start difference. First operand 107357 states and 156514 transitions. Second operand 6 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown