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_label49_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 08:44:51,511 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 08:44:51,513 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 08:44:51,526 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 08:44:51,526 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 08:44:51,527 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 08:44:51,528 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 08:44:51,530 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 08:44:51,532 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 08:44:51,533 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 08:44:51,534 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 08:44:51,534 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 08:44:51,535 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 08:44:51,536 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 08:44:51,537 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 08:44:51,538 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 08:44:51,539 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 08:44:51,540 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 08:44:51,543 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 08:44:51,544 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 08:44:51,546 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 08:44:51,547 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 08:44:51,553 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 08:44:51,553 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 08:44:51,553 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 08:44:51,555 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 08:44:51,559 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 08:44:51,560 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 08:44:51,563 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 08:44:51,564 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 08:44:51,565 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 08:44:51,565 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 08:44:51,565 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 08:44:51,566 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 08:44:51,566 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 08:44:51,570 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 08:44:51,571 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 08:44:51,594 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 08:44:51,595 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 08:44:51,596 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 08:44:51,596 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 08:44:51,596 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 08:44:51,596 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 08:44:51,596 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 08:44:51,597 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 08:44:51,597 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 08:44:51,597 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 08:44:51,597 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 08:44:51,597 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 08:44:51,598 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 08:44:51,598 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 08:44:51,598 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 08:44:51,599 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 08:44:51,599 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 08:44:51,599 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 08:44:51,599 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 08:44:51,599 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 08:44:51,600 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 08:44:51,600 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 08:44:51,600 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 08:44:51,600 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 08:44:51,600 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 08:44:51,601 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 08:44:51,601 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:44:51,601 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 08:44:51,601 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 08:44:51,601 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 08:44:51,602 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 08:44:51,602 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 08:44:51,602 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 08:44:51,602 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 08:44:51,602 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 08:44:51,603 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 08:44:51,652 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 08:44:51,671 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 08:44:51,675 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 08:44:51,677 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 08:44:51,677 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 08:44:51,678 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label49_true-unreach-call.c [2018-11-07 08:44:51,738 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aeaf35a9/1e75110c1e76428fa781cbdb32a38ef9/FLAG54044e85e [2018-11-07 08:44:52,508 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 08:44:52,509 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label49_true-unreach-call.c [2018-11-07 08:44:52,547 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aeaf35a9/1e75110c1e76428fa781cbdb32a38ef9/FLAG54044e85e [2018-11-07 08:44:52,570 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aeaf35a9/1e75110c1e76428fa781cbdb32a38ef9 [2018-11-07 08:44:52,583 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 08:44:52,587 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 08:44:52,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 08:44:52,589 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 08:44:52,594 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 08:44:52,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:44:52" (1/1) ... [2018-11-07 08:44:52,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41c2de68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:52, skipping insertion in model container [2018-11-07 08:44:52,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:44:52" (1/1) ... [2018-11-07 08:44:52,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 08:44:52,774 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 08:44:54,133 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:44:54,138 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 08:44:54,744 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:44:54,779 INFO L193 MainTranslator]: Completed translation [2018-11-07 08:44:54,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:54 WrapperNode [2018-11-07 08:44:54,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 08:44:54,782 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 08:44:54,782 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 08:44:54,782 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 08:44:54,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:54" (1/1) ... [2018-11-07 08:44:55,161 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:54" (1/1) ... [2018-11-07 08:44:55,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 08:44:55,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 08:44:55,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 08:44:55,172 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 08:44:55,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:54" (1/1) ... [2018-11-07 08:44:55,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:54" (1/1) ... [2018-11-07 08:44:55,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:54" (1/1) ... [2018-11-07 08:44:55,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:54" (1/1) ... [2018-11-07 08:44:55,313 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:54" (1/1) ... [2018-11-07 08:44:55,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:54" (1/1) ... [2018-11-07 08:44:55,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:54" (1/1) ... [2018-11-07 08:44:55,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 08:44:55,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 08:44:55,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 08:44:55,425 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 08:44:55,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:54" (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 08:44:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 08:44:55,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 08:44:55,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 08:44:55,509 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 08:44:55,510 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 08:44:55,510 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 08:44:55,510 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 08:44:55,510 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 08:44:55,510 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 08:44:55,511 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 08:44:55,514 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 08:44:55,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 08:44:55,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 08:44:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 08:44:55,515 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 08:45:04,406 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 08:45:04,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:45:04 BoogieIcfgContainer [2018-11-07 08:45:04,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 08:45:04,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 08:45:04,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 08:45:04,412 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 08:45:04,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:44:52" (1/3) ... [2018-11-07 08:45:04,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@494436f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:45:04, skipping insertion in model container [2018-11-07 08:45:04,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:54" (2/3) ... [2018-11-07 08:45:04,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@494436f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:45:04, skipping insertion in model container [2018-11-07 08:45:04,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:45:04" (3/3) ... [2018-11-07 08:45:04,417 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label49_true-unreach-call.c [2018-11-07 08:45:04,428 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 08:45:04,440 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 08:45:04,456 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 08:45:04,505 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 08:45:04,505 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 08:45:04,505 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 08:45:04,505 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 08:45:04,505 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 08:45:04,506 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 08:45:04,506 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 08:45:04,506 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 08:45:04,549 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-07 08:45:04,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-11-07 08:45:04,563 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:45:04,564 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] [2018-11-07 08:45:04,567 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:45:04,573 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:45:04,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1466253757, now seen corresponding path program 1 times [2018-11-07 08:45:04,577 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:45:04,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:45:04,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:45:04,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:45:04,635 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:45:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:45:05,122 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:45:05,246 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 08:45:05,249 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:45:05,249 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 08:45:05,249 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:45:05,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:45:05,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:45:05,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:45:05,280 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-11-07 08:45:12,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:45:12,380 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-11-07 08:45:12,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:45:12,382 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2018-11-07 08:45:12,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:45:12,417 INFO L225 Difference]: With dead ends: 2446 [2018-11-07 08:45:12,418 INFO L226 Difference]: Without dead ends: 1604 [2018-11-07 08:45:12,431 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:45:12,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-11-07 08:45:12,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-11-07 08:45:12,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-11-07 08:45:12,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 3021 transitions. [2018-11-07 08:45:12,584 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 3021 transitions. Word has length 49 [2018-11-07 08:45:12,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:45:12,585 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 3021 transitions. [2018-11-07 08:45:12,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:45:12,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 3021 transitions. [2018-11-07 08:45:12,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-11-07 08:45:12,593 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:45:12,594 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:45:12,594 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:45:12,594 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:45:12,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1490932028, now seen corresponding path program 1 times [2018-11-07 08:45:12,595 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:45:12,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:45:12,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:45:12,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:45:12,597 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:45:12,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:45:12,960 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:45:12,961 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:45:12,961 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:45:12,961 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:45:12,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:45:12,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:45:12,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:45:12,965 INFO L87 Difference]: Start difference. First operand 1604 states and 3021 transitions. Second operand 6 states. [2018-11-07 08:45:25,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:45:25,996 INFO L93 Difference]: Finished difference Result 6330 states and 12128 transitions. [2018-11-07 08:45:25,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:45:25,997 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-11-07 08:45:25,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:45:26,032 INFO L225 Difference]: With dead ends: 6330 [2018-11-07 08:45:26,033 INFO L226 Difference]: Without dead ends: 4732 [2018-11-07 08:45:26,044 INFO L604 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 [2018-11-07 08:45:26,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4732 states. [2018-11-07 08:45:26,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4732 to 4700. [2018-11-07 08:45:26,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4700 states. [2018-11-07 08:45:26,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4700 states to 4700 states and 7674 transitions. [2018-11-07 08:45:26,209 INFO L78 Accepts]: Start accepts. Automaton has 4700 states and 7674 transitions. Word has length 127 [2018-11-07 08:45:26,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:45:26,211 INFO L480 AbstractCegarLoop]: Abstraction has 4700 states and 7674 transitions. [2018-11-07 08:45:26,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:45:26,211 INFO L276 IsEmpty]: Start isEmpty. Operand 4700 states and 7674 transitions. [2018-11-07 08:45:26,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-11-07 08:45:26,223 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:45:26,223 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:45:26,224 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:45:26,224 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:45:26,224 INFO L82 PathProgramCache]: Analyzing trace with hash -729393447, now seen corresponding path program 1 times [2018-11-07 08:45:26,224 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:45:26,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:45:26,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:45:26,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:45:26,227 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:45:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:45:26,551 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:45:26,552 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:45:26,552 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 08:45:26,552 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:45:26,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 08:45:26,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 08:45:26,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-07 08:45:26,554 INFO L87 Difference]: Start difference. First operand 4700 states and 7674 transitions. Second operand 5 states. [2018-11-07 08:45:34,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:45:34,037 INFO L93 Difference]: Finished difference Result 14303 states and 23676 transitions. [2018-11-07 08:45:34,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 08:45:34,048 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2018-11-07 08:45:34,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:45:34,102 INFO L225 Difference]: With dead ends: 14303 [2018-11-07 08:45:34,103 INFO L226 Difference]: Without dead ends: 9609 [2018-11-07 08:45:34,119 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:45:34,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9609 states. [2018-11-07 08:45:34,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9609 to 9527. [2018-11-07 08:45:34,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9527 states. [2018-11-07 08:45:34,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9527 states to 9527 states and 14359 transitions. [2018-11-07 08:45:34,420 INFO L78 Accepts]: Start accepts. Automaton has 9527 states and 14359 transitions. Word has length 130 [2018-11-07 08:45:34,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:45:34,421 INFO L480 AbstractCegarLoop]: Abstraction has 9527 states and 14359 transitions. [2018-11-07 08:45:34,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 08:45:34,421 INFO L276 IsEmpty]: Start isEmpty. Operand 9527 states and 14359 transitions. [2018-11-07 08:45:34,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-11-07 08:45:34,425 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:45:34,425 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:45:34,426 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:45:34,427 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:45:34,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1452508056, now seen corresponding path program 1 times [2018-11-07 08:45:34,427 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:45:34,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:45:34,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:45:34,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:45:34,430 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:45:34,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:45:35,016 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:45:35,016 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:45:35,016 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:45:35,017 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:45:35,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:45:35,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:45:35,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:45:35,018 INFO L87 Difference]: Start difference. First operand 9527 states and 14359 transitions. Second operand 6 states. [2018-11-07 08:45:49,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:45:49,701 INFO L93 Difference]: Finished difference Result 38604 states and 63778 transitions. [2018-11-07 08:45:49,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 08:45:49,703 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2018-11-07 08:45:49,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:45:49,876 INFO L225 Difference]: With dead ends: 38604 [2018-11-07 08:45:49,876 INFO L226 Difference]: Without dead ends: 29083 [2018-11-07 08:45:49,983 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 08:45:50,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29083 states. [2018-11-07 08:45:50,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29083 to 28884. [2018-11-07 08:45:50,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28884 states. [2018-11-07 08:45:50,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28884 states to 28884 states and 42392 transitions. [2018-11-07 08:45:50,940 INFO L78 Accepts]: Start accepts. Automaton has 28884 states and 42392 transitions. Word has length 153 [2018-11-07 08:45:50,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:45:50,940 INFO L480 AbstractCegarLoop]: Abstraction has 28884 states and 42392 transitions. [2018-11-07 08:45:50,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:45:50,941 INFO L276 IsEmpty]: Start isEmpty. Operand 28884 states and 42392 transitions. [2018-11-07 08:45:50,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-11-07 08:45:50,945 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:45:50,945 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:45:50,945 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:45:50,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:45:50,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1417457295, now seen corresponding path program 1 times [2018-11-07 08:45:50,946 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:45:50,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:45:50,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:45:50,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:45:50,947 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:45:50,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:45:51,269 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:45:51,675 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:45:51,676 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:45:51,676 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:45:51,676 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:45:51,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:45:51,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:45:51,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:45:51,679 INFO L87 Difference]: Start difference. First operand 28884 states and 42392 transitions. Second operand 6 states. [2018-11-07 08:46:01,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:46:01,435 INFO L93 Difference]: Finished difference Result 77283 states and 121529 transitions. [2018-11-07 08:46:01,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:46:01,440 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2018-11-07 08:46:01,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:46:01,660 INFO L225 Difference]: With dead ends: 77283 [2018-11-07 08:46:01,661 INFO L226 Difference]: Without dead ends: 48405 [2018-11-07 08:46:01,783 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 08:46:01,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48405 states. [2018-11-07 08:46:03,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48405 to 48175. [2018-11-07 08:46:03,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48175 states. [2018-11-07 08:46:03,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48175 states to 48175 states and 68300 transitions. [2018-11-07 08:46:03,359 INFO L78 Accepts]: Start accepts. Automaton has 48175 states and 68300 transitions. Word has length 174 [2018-11-07 08:46:03,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:46:03,360 INFO L480 AbstractCegarLoop]: Abstraction has 48175 states and 68300 transitions. [2018-11-07 08:46:03,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:46:03,360 INFO L276 IsEmpty]: Start isEmpty. Operand 48175 states and 68300 transitions. [2018-11-07 08:46:03,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-11-07 08:46:03,372 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:46:03,372 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 08:46:03,372 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:46:03,373 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:46:03,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1734956816, now seen corresponding path program 1 times [2018-11-07 08:46:03,373 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:46:03,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:46:03,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:46:03,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:46:03,374 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:46:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:46:03,654 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:46:04,104 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 84 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 08:46:04,104 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:46:04,106 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:46:04,107 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 245 with the following transitions: [2018-11-07 08:46:04,116 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2159], [2161], [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], [2404], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2536], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 08:46:04,195 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:46:04,196 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:46:06,312 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:46:06,314 INFO L272 AbstractInterpreter]: Visited 119 different actions 119 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 08:46:06,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:46:06,347 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:46:08,032 INFO L227 lantSequenceWeakener]: Weakened 235 states. On average, predicates are now at 75.52% of their original sizes. [2018-11-07 08:46:08,032 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:46:08,266 INFO L415 sIntCurrentIteration]: We unified 243 AI predicates to 243 [2018-11-07 08:46:08,267 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:46:08,268 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:46:08,268 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 08:46:08,268 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:46:08,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:46:08,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:46:08,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:46:08,270 INFO L87 Difference]: Start difference. First operand 48175 states and 68300 transitions. Second operand 6 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown