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/Problem18_label22_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:36:40,575 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:36:40,577 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:36:40,591 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:36:40,591 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:36:40,592 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:36:40,593 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:36:40,595 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:36:40,596 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:36:40,597 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:36:40,598 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:36:40,598 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:36:40,599 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:36:40,601 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:36:40,602 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:36:40,603 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:36:40,606 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:36:40,608 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:36:40,610 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:36:40,611 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:36:40,612 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:36:40,613 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:36:40,616 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:36:40,616 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:36:40,616 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:36:40,617 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:36:40,618 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:36:40,619 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:36:40,620 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:36:40,621 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:36:40,621 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:36:40,622 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 09:36:40,622 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 09:36:40,622 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 09:36:40,623 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 09:36:40,624 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 09:36:40,624 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 09:36:40,644 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:36:40,645 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:36:40,645 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:36:40,646 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:36:40,647 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:36:40,647 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:36:40,647 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:36:40,647 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:36:40,647 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:36:40,648 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:36:40,648 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:36:40,648 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:36:40,648 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:36:40,648 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:36:40,650 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:36:40,650 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:36:40,650 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:36:40,650 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:36:40,650 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:36:40,650 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:36:40,652 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:36:40,652 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:36:40,653 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:36:40,653 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:36:40,653 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:36:40,653 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:36:40,653 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:36:40,654 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:36:40,654 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:36:40,654 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:36:40,654 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:36:40,654 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:36:40,655 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:36:40,655 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:36:40,655 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:36:40,655 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:36:40,714 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:36:40,727 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:36:40,731 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:36:40,733 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:36:40,733 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:36:40,734 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label22_true-unreach-call.c [2018-11-07 09:36:40,794 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42910e659/df2852f2b082425f8aa38837650c8a66/FLAG59e1b4744 [2018-11-07 09:36:41,485 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:36:41,486 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label22_true-unreach-call.c [2018-11-07 09:36:41,516 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42910e659/df2852f2b082425f8aa38837650c8a66/FLAG59e1b4744 [2018-11-07 09:36:41,532 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42910e659/df2852f2b082425f8aa38837650c8a66 [2018-11-07 09:36:41,543 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:36:41,545 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:36:41,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:36:41,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:36:41,550 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:36:41,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:36:41" (1/1) ... [2018-11-07 09:36:41,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@627e153f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:36:41, skipping insertion in model container [2018-11-07 09:36:41,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:36:41" (1/1) ... [2018-11-07 09:36:41,565 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:36:41,709 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:36:42,905 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:36:42,910 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:36:43,431 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:36:43,457 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:36:43,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:36:43 WrapperNode [2018-11-07 09:36:43,458 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:36:43,459 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:36:43,459 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:36:43,460 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:36:43,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:36:43" (1/1) ... [2018-11-07 09:36:43,740 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:36:43" (1/1) ... [2018-11-07 09:36:43,751 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:36:43,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:36:43,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:36:43,752 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:36:43,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:36:43" (1/1) ... [2018-11-07 09:36:43,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:36:43" (1/1) ... [2018-11-07 09:36:43,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:36:43" (1/1) ... [2018-11-07 09:36:43,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:36:43" (1/1) ... [2018-11-07 09:36:43,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:36:43" (1/1) ... [2018-11-07 09:36:43,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:36:43" (1/1) ... [2018-11-07 09:36:43,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:36:43" (1/1) ... [2018-11-07 09:36:43,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:36:43,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:36:43,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:36:43,972 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:36:43,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:36:43" (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 09:36:44,039 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:36:44,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:36:44,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:36:44,040 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 09:36:44,040 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 09:36:44,040 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:36:44,041 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:36:44,041 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:36:44,041 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:36:44,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:36:44,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:36:44,042 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:36:44,042 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:36:53,437 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:36:53,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:36:53 BoogieIcfgContainer [2018-11-07 09:36:53,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:36:53,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:36:53,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:36:53,442 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:36:53,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:36:41" (1/3) ... [2018-11-07 09:36:53,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@201633c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:36:53, skipping insertion in model container [2018-11-07 09:36:53,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:36:43" (2/3) ... [2018-11-07 09:36:53,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@201633c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:36:53, skipping insertion in model container [2018-11-07 09:36:53,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:36:53" (3/3) ... [2018-11-07 09:36:53,446 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label22_true-unreach-call.c [2018-11-07 09:36:53,458 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:36:53,469 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:36:53,488 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:36:53,537 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:36:53,537 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:36:53,537 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:36:53,538 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:36:53,538 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:36:53,538 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:36:53,538 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:36:53,538 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:36:53,580 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 09:36:53,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-07 09:36:53,590 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:36:53,592 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] [2018-11-07 09:36:53,594 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:36:53,601 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:36:53,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1454779668, now seen corresponding path program 1 times [2018-11-07 09:36:53,605 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:36:53,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:36:53,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:36:53,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:36:53,668 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:36:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:36:54,148 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 09:36:54,151 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:36:54,152 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 09:36:54,152 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:36:54,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:36:54,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:36:54,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:36:54,180 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 09:37:01,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:37:01,120 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 09:37:01,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:37:01,122 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2018-11-07 09:37:01,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:37:01,171 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 09:37:01,171 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 09:37:01,188 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:37:01,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 09:37:01,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 09:37:01,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 09:37:01,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-11-07 09:37:01,378 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 48 [2018-11-07 09:37:01,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:37:01,379 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-11-07 09:37:01,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:37:01,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-11-07 09:37:01,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-11-07 09:37:01,391 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:37:01,392 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:37:01,392 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:37:01,393 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:37:01,393 INFO L82 PathProgramCache]: Analyzing trace with hash 231159574, now seen corresponding path program 1 times [2018-11-07 09:37:01,393 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:37:01,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:37:01,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:37:01,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:37:01,396 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:37:01,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:37:01,762 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:37:01,980 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:37:01,981 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:37:01,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 09:37:01,981 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:37:01,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 09:37:01,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 09:37:01,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 09:37:01,987 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 5 states. [2018-11-07 09:37:10,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:37:10,535 INFO L93 Difference]: Finished difference Result 3698 states and 6787 transitions. [2018-11-07 09:37:10,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:37:10,536 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2018-11-07 09:37:10,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:37:10,550 INFO L225 Difference]: With dead ends: 3698 [2018-11-07 09:37:10,551 INFO L226 Difference]: Without dead ends: 2230 [2018-11-07 09:37:10,556 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:37:10,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2018-11-07 09:37:10,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 2209. [2018-11-07 09:37:10,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2209 states. [2018-11-07 09:37:10,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 3833 transitions. [2018-11-07 09:37:10,625 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 3833 transitions. Word has length 120 [2018-11-07 09:37:10,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:37:10,626 INFO L480 AbstractCegarLoop]: Abstraction has 2209 states and 3833 transitions. [2018-11-07 09:37:10,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 09:37:10,626 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 3833 transitions. [2018-11-07 09:37:10,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-11-07 09:37:10,630 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:37:10,631 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:37:10,631 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:37:10,631 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:37:10,631 INFO L82 PathProgramCache]: Analyzing trace with hash -555472729, now seen corresponding path program 1 times [2018-11-07 09:37:10,632 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:37:10,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:37:10,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:37:10,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:37:10,633 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:37:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:37:10,906 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:37:10,906 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:37:10,906 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:37:10,907 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:37:10,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:37:10,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:37:10,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:37:10,908 INFO L87 Difference]: Start difference. First operand 2209 states and 3833 transitions. Second operand 6 states. [2018-11-07 09:37:18,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:37:18,273 INFO L93 Difference]: Finished difference Result 5866 states and 10122 transitions. [2018-11-07 09:37:18,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:37:18,276 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-11-07 09:37:18,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:37:18,301 INFO L225 Difference]: With dead ends: 5866 [2018-11-07 09:37:18,302 INFO L226 Difference]: Without dead ends: 3663 [2018-11-07 09:37:18,312 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:37:18,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3663 states. [2018-11-07 09:37:18,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3663 to 3639. [2018-11-07 09:37:18,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3639 states. [2018-11-07 09:37:18,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 5517 transitions. [2018-11-07 09:37:18,416 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 5517 transitions. Word has length 143 [2018-11-07 09:37:18,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:37:18,417 INFO L480 AbstractCegarLoop]: Abstraction has 3639 states and 5517 transitions. [2018-11-07 09:37:18,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:37:18,417 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 5517 transitions. [2018-11-07 09:37:18,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-11-07 09:37:18,420 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:37:18,420 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:37:18,420 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:37:18,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:37:18,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1738669407, now seen corresponding path program 1 times [2018-11-07 09:37:18,421 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:37:18,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:37:18,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:37:18,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:37:18,423 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:37:18,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:37:18,657 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:37:18,657 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:37:18,658 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:37:18,658 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:37:18,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:37:18,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:37:18,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:37:18,659 INFO L87 Difference]: Start difference. First operand 3639 states and 5517 transitions. Second operand 6 states. [2018-11-07 09:37:25,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:37:25,905 INFO L93 Difference]: Finished difference Result 8735 states and 13271 transitions. [2018-11-07 09:37:25,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:37:25,906 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2018-11-07 09:37:25,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:37:25,933 INFO L225 Difference]: With dead ends: 8735 [2018-11-07 09:37:25,933 INFO L226 Difference]: Without dead ends: 5102 [2018-11-07 09:37:25,946 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 09:37:25,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5102 states. [2018-11-07 09:37:26,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5102 to 5084. [2018-11-07 09:37:26,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5084 states. [2018-11-07 09:37:26,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5084 states to 5084 states and 6940 transitions. [2018-11-07 09:37:26,081 INFO L78 Accepts]: Start accepts. Automaton has 5084 states and 6940 transitions. Word has length 147 [2018-11-07 09:37:26,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:37:26,082 INFO L480 AbstractCegarLoop]: Abstraction has 5084 states and 6940 transitions. [2018-11-07 09:37:26,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:37:26,082 INFO L276 IsEmpty]: Start isEmpty. Operand 5084 states and 6940 transitions. [2018-11-07 09:37:26,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-11-07 09:37:26,085 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:37:26,086 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:37:26,086 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:37:26,086 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:37:26,087 INFO L82 PathProgramCache]: Analyzing trace with hash -907400126, now seen corresponding path program 1 times [2018-11-07 09:37:26,087 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:37:26,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:37:26,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:37:26,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:37:26,091 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:37:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:37:26,352 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:37:26,353 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:37:26,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:37:26,353 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:37:26,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:37:26,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:37:26,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:37:26,355 INFO L87 Difference]: Start difference. First operand 5084 states and 6940 transitions. Second operand 6 states. [2018-11-07 09:37:31,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:37:31,998 INFO L93 Difference]: Finished difference Result 13307 states and 18750 transitions. [2018-11-07 09:37:32,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:37:32,001 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 178 [2018-11-07 09:37:32,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:37:32,045 INFO L225 Difference]: With dead ends: 13307 [2018-11-07 09:37:32,046 INFO L226 Difference]: Without dead ends: 8229 [2018-11-07 09:37:32,064 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 09:37:32,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8229 states. [2018-11-07 09:37:32,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8229 to 8128. [2018-11-07 09:37:32,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8128 states. [2018-11-07 09:37:32,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8128 states to 8128 states and 10817 transitions. [2018-11-07 09:37:32,269 INFO L78 Accepts]: Start accepts. Automaton has 8128 states and 10817 transitions. Word has length 178 [2018-11-07 09:37:32,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:37:32,270 INFO L480 AbstractCegarLoop]: Abstraction has 8128 states and 10817 transitions. [2018-11-07 09:37:32,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:37:32,270 INFO L276 IsEmpty]: Start isEmpty. Operand 8128 states and 10817 transitions. [2018-11-07 09:37:32,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-11-07 09:37:32,276 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:37:32,277 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, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 09:37:32,277 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:37:32,277 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:37:32,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1716237031, now seen corresponding path program 1 times [2018-11-07 09:37:32,278 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:37:32,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:37:32,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:37:32,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:37:32,279 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:37:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:37:32,763 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 82 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:37:32,764 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:37:32,764 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:37:32,765 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 212 with the following transitions: [2018-11-07 09:37:32,767 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1907], [1909], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2124], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2200], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 09:37:32,842 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:37:32,843 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:37:33,358 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:37:33,363 INFO L272 AbstractInterpreter]: Visited 96 different actions 96 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 09:37:33,407 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:37:33,407 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:37:33,832 INFO L227 lantSequenceWeakener]: Weakened 202 states. On average, predicates are now at 77.99% of their original sizes. [2018-11-07 09:37:33,833 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:37:33,961 INFO L415 sIntCurrentIteration]: We unified 210 AI predicates to 210 [2018-11-07 09:37:33,962 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:37:33,963 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:37:33,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 09:37:33,963 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:37:33,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:37:33,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:37:33,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:37:33,965 INFO L87 Difference]: Start difference. First operand 8128 states and 10817 transitions. Second operand 6 states. [2018-11-07 09:38:18,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:38:18,986 INFO L93 Difference]: Finished difference Result 16955 states and 22499 transitions. [2018-11-07 09:38:18,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:38:18,986 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 211 [2018-11-07 09:38:18,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:38:19,015 INFO L225 Difference]: With dead ends: 16955 [2018-11-07 09:38:19,016 INFO L226 Difference]: Without dead ends: 8833 [2018-11-07 09:38:19,032 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 211 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:38:19,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8833 states. [2018-11-07 09:38:19,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8833 to 8831. [2018-11-07 09:38:19,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8831 states. [2018-11-07 09:38:19,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8831 states to 8831 states and 11532 transitions. [2018-11-07 09:38:19,201 INFO L78 Accepts]: Start accepts. Automaton has 8831 states and 11532 transitions. Word has length 211 [2018-11-07 09:38:19,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:38:19,202 INFO L480 AbstractCegarLoop]: Abstraction has 8831 states and 11532 transitions. [2018-11-07 09:38:19,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:38:19,202 INFO L276 IsEmpty]: Start isEmpty. Operand 8831 states and 11532 transitions. [2018-11-07 09:38:19,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-11-07 09:38:19,212 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:38:19,213 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 09:38:19,213 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:38:19,213 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:38:19,214 INFO L82 PathProgramCache]: Analyzing trace with hash -19059722, now seen corresponding path program 1 times [2018-11-07 09:38:19,214 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:38:19,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:19,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:38:19,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:19,215 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:38:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:38:19,949 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 182 proven. 171 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:38:19,949 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:38:19,949 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:38:19,949 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 399 with the following transitions: [2018-11-07 09:38:19,950 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1907], [1909], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2124], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2200], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [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], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 09:38:19,958 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:38:19,958 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:38:20,206 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:38:20,206 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:38:20,234 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:38:20,234 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:38:20,665 INFO L227 lantSequenceWeakener]: Weakened 395 states. On average, predicates are now at 77.7% of their original sizes. [2018-11-07 09:38:20,665 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:38:21,016 INFO L415 sIntCurrentIteration]: We unified 397 AI predicates to 397 [2018-11-07 09:38:21,016 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:38:21,017 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:38:21,017 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2018-11-07 09:38:21,017 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:38:21,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 09:38:21,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 09:38:21,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:38:21,018 INFO L87 Difference]: Start difference. First operand 8831 states and 11532 transitions. Second operand 10 states. [2018-11-07 09:39:08,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:39:08,217 INFO L93 Difference]: Finished difference Result 19077 states and 25004 transitions. [2018-11-07 09:39:08,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 09:39:08,217 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 398 [2018-11-07 09:39:08,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:39:08,244 INFO L225 Difference]: With dead ends: 19077 [2018-11-07 09:39:08,244 INFO L226 Difference]: Without dead ends: 10955 [2018-11-07 09:39:08,261 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 406 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-11-07 09:39:08,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10955 states. [2018-11-07 09:39:08,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10955 to 10950. [2018-11-07 09:39:08,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10950 states. [2018-11-07 09:39:08,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10950 states to 10950 states and 13682 transitions. [2018-11-07 09:39:08,432 INFO L78 Accepts]: Start accepts. Automaton has 10950 states and 13682 transitions. Word has length 398 [2018-11-07 09:39:08,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:39:08,433 INFO L480 AbstractCegarLoop]: Abstraction has 10950 states and 13682 transitions. [2018-11-07 09:39:08,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 09:39:08,433 INFO L276 IsEmpty]: Start isEmpty. Operand 10950 states and 13682 transitions. [2018-11-07 09:39:08,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1048 [2018-11-07 09:39:08,476 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:39:08,477 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:39:08,478 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:39:08,478 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:39:08,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1098952527, now seen corresponding path program 1 times [2018-11-07 09:39:08,478 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:39:08,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:39:08,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:39:08,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:39:08,480 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:39:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:39:09,326 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:39:10,233 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 130 proven. 505 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2018-11-07 09:39:10,233 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:39:10,233 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:39:10,234 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1048 with the following transitions: [2018-11-07 09:39:10,235 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [37], [739], [740], [744], [748], [752], [756], [760], [764], [768], [772], [776], [780], [784], [788], [792], [795], [796], [800], [804], [808], [812], [816], [820], [824], [828], [832], [836], [840], [844], [848], [852], [856], [860], [864], [868], [872], [876], [880], [884], [888], [892], [896], [900], [904], [908], [912], [916], [920], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [964], [968], [972], [976], [980], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1064], [1068], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1184], [1188], [1192], [1196], [1200], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1248], [1252], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1360], [1364], [1368], [1372], [1376], [1380], [1384], [1388], [1392], [1396], [1400], [1404], [1408], [1412], [1416], [1420], [1424], [1428], [1432], [1436], [1440], [1444], [1448], [1452], [1456], [1460], [1464], [1468], [1472], [1476], [1480], [1484], [1488], [1492], [1496], [1500], [1504], [1508], [1512], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1552], [1556], [1560], [1564], [1568], [1572], [1576], [1580], [1584], [1588], [1592], [1596], [1600], [1604], [1608], [1612], [1616], [1620], [1622], [1623], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1907], [1909], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2124], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2200], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [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], [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], [2995], [2996], [3000], [3004], [3010], [3014], [3016], [3021], [3022], [3023], [3024], [3025], [3026], [3027], [3029], [3030] [2018-11-07 09:39:10,251 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:39:10,251 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:39:11,656 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:39:11,657 INFO L272 AbstractInterpreter]: Visited 539 different actions 2703 times. Merged at 11 different actions 55 times. Widened at 1 different actions 1 times. Found 10 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:39:11,664 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:39:11,665 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:39:11,665 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:39:11,665 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:39:11,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:39:11,678 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:39:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:39:12,268 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:39:12,916 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2018-11-07 09:39:12,916 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:39:14,332 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2018-11-07 09:39:14,355 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:39:14,355 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2018-11-07 09:39:14,356 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:39:14,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:39:14,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:39:14,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:39:14,358 INFO L87 Difference]: Start difference. First operand 10950 states and 13682 transitions. Second operand 3 states. [2018-11-07 09:39:20,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:39:20,441 INFO L93 Difference]: Finished difference Result 29788 states and 38863 transitions. [2018-11-07 09:39:20,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:39:20,443 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1047 [2018-11-07 09:39:20,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:39:20,547 INFO L225 Difference]: With dead ends: 29788 [2018-11-07 09:39:20,547 INFO L226 Difference]: Without dead ends: 19547 [2018-11-07 09:39:20,589 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2108 GetRequests, 2098 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:39:20,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19547 states. [2018-11-07 09:39:20,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19547 to 19547. [2018-11-07 09:39:20,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19547 states. [2018-11-07 09:39:21,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19547 states to 19547 states and 24485 transitions. [2018-11-07 09:39:21,031 INFO L78 Accepts]: Start accepts. Automaton has 19547 states and 24485 transitions. Word has length 1047 [2018-11-07 09:39:21,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:39:21,034 INFO L480 AbstractCegarLoop]: Abstraction has 19547 states and 24485 transitions. [2018-11-07 09:39:21,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:39:21,034 INFO L276 IsEmpty]: Start isEmpty. Operand 19547 states and 24485 transitions. [2018-11-07 09:39:21,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1059 [2018-11-07 09:39:21,066 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:39:21,067 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:39:21,067 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:39:21,068 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:39:21,068 INFO L82 PathProgramCache]: Analyzing trace with hash 2139064772, now seen corresponding path program 1 times [2018-11-07 09:39:21,068 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:39:21,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:39:21,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:39:21,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:39:21,073 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:39:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:39:21,993 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:39:23,657 INFO L134 CoverageAnalysis]: Checked inductivity of 895 backedges. 176 proven. 270 refuted. 0 times theorem prover too weak. 449 trivial. 0 not checked. [2018-11-07 09:39:23,658 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:39:23,658 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:39:23,659 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1059 with the following transitions: [2018-11-07 09:39:23,659 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [37], [739], [740], [744], [748], [752], [756], [760], [764], [768], [772], [776], [780], [784], [788], [792], [795], [796], [800], [804], [808], [812], [816], [820], [824], [828], [832], [836], [840], [844], [848], [852], [856], [860], [864], [868], [872], [876], [880], [884], [888], [892], [896], [900], [904], [908], [912], [916], [920], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [964], [968], [972], [976], [980], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1064], [1068], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1184], [1188], [1192], [1196], [1200], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1248], [1252], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1360], [1364], [1368], [1372], [1376], [1380], [1384], [1388], [1392], [1396], [1400], [1404], [1408], [1412], [1416], [1420], [1424], [1428], [1432], [1436], [1440], [1444], [1448], [1452], [1456], [1460], [1464], [1468], [1472], [1476], [1480], [1484], [1488], [1492], [1496], [1500], [1504], [1508], [1512], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1552], [1556], [1560], [1564], [1568], [1572], [1576], [1580], [1584], [1588], [1592], [1596], [1600], [1604], [1608], [1612], [1616], [1620], [1622], [1623], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1907], [1909], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2136], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2232], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [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], [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], [2995], [2996], [3000], [3004], [3010], [3014], [3016], [3021], [3022], [3023], [3024], [3025], [3026], [3027], [3029], [3030] [2018-11-07 09:39:23,676 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:39:23,677 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:39:28,534 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:39:28,534 INFO L272 AbstractInterpreter]: Visited 538 different actions 1619 times. Merged at 10 different actions 27 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 09:39:28,559 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:39:28,560 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:39:29,872 INFO L227 lantSequenceWeakener]: Weakened 1055 states. On average, predicates are now at 80.2% of their original sizes. [2018-11-07 09:39:29,872 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:39:30,244 INFO L415 sIntCurrentIteration]: We unified 1057 AI predicates to 1057 [2018-11-07 09:39:30,245 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:39:30,245 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:39:30,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-11-07 09:39:30,245 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:39:30,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 09:39:30,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 09:39:30,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2018-11-07 09:39:30,247 INFO L87 Difference]: Start difference. First operand 19547 states and 24485 transitions. Second operand 17 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown