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_label11_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:34:06,564 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:34:06,566 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:34:06,580 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:34:06,580 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:34:06,581 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:34:06,583 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:34:06,585 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:34:06,587 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:34:06,588 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:34:06,590 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:34:06,590 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:34:06,592 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:34:06,593 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:34:06,595 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:34:06,596 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:34:06,598 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:34:06,599 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:34:06,602 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:34:06,610 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:34:06,612 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:34:06,616 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:34:06,620 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:34:06,620 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:34:06,620 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:34:06,623 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:34:06,624 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:34:06,624 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:34:06,627 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:34:06,630 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:34:06,630 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:34:06,631 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 09:34:06,635 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 09:34:06,662 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:34:06,663 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:34:06,664 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:34:06,664 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:34:06,664 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:34:06,664 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:34:06,664 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:34:06,665 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:34:06,665 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:34:06,666 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:34:06,666 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:34:06,666 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:34:06,666 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:34:06,666 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:34:06,667 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:34:06,667 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:34:06,667 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:34:06,671 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:34:06,671 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:34:06,671 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:34:06,671 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:34:06,671 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:34:06,672 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:34:06,672 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:34:06,672 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:34:06,673 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:34:06,673 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:34:06,673 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:34:06,673 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:34:06,673 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:34:06,674 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:34:06,674 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:34:06,674 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:34:06,674 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:34:06,674 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:34:06,676 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:34:06,731 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:34:06,744 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:34:06,748 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:34:06,750 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:34:06,750 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:34:06,751 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label11_true-unreach-call.c [2018-11-07 09:34:06,810 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/415c05a79/8d7c7edc11a44fbc8c9531992e2c254e/FLAGb3d7823e6 [2018-11-07 09:34:07,514 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:34:07,515 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label11_true-unreach-call.c [2018-11-07 09:34:07,544 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/415c05a79/8d7c7edc11a44fbc8c9531992e2c254e/FLAGb3d7823e6 [2018-11-07 09:34:07,564 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/415c05a79/8d7c7edc11a44fbc8c9531992e2c254e [2018-11-07 09:34:07,577 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:34:07,579 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:34:07,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:34:07,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:34:07,584 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:34:07,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:34:07" (1/1) ... [2018-11-07 09:34:07,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7364f84f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:07, skipping insertion in model container [2018-11-07 09:34:07,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:34:07" (1/1) ... [2018-11-07 09:34:07,601 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:34:07,724 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:34:08,776 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:34:08,781 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:34:09,244 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:34:09,276 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:34:09,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:09 WrapperNode [2018-11-07 09:34:09,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:34:09,278 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:34:09,278 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:34:09,279 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:34:09,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:09" (1/1) ... [2018-11-07 09:34:09,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:09" (1/1) ... [2018-11-07 09:34:09,557 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:34:09,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:34:09,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:34:09,558 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:34:09,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:09" (1/1) ... [2018-11-07 09:34:09,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:09" (1/1) ... [2018-11-07 09:34:09,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:09" (1/1) ... [2018-11-07 09:34:09,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:09" (1/1) ... [2018-11-07 09:34:09,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:09" (1/1) ... [2018-11-07 09:34:09,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:09" (1/1) ... [2018-11-07 09:34:09,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:09" (1/1) ... [2018-11-07 09:34:09,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:34:09,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:34:09,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:34:09,756 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:34:09,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:09" (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 09:34:09,822 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:34:09,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:34:09,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:34:09,823 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 09:34:09,823 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 09:34:09,823 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:34:09,824 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:34:09,824 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:34:09,824 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:34:09,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:34:09,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:34:09,825 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:34:09,825 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:34:18,304 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:34:18,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:34:18 BoogieIcfgContainer [2018-11-07 09:34:18,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:34:18,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:34:18,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:34:18,310 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:34:18,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:34:07" (1/3) ... [2018-11-07 09:34:18,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@83dce74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:34:18, skipping insertion in model container [2018-11-07 09:34:18,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:09" (2/3) ... [2018-11-07 09:34:18,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@83dce74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:34:18, skipping insertion in model container [2018-11-07 09:34:18,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:34:18" (3/3) ... [2018-11-07 09:34:18,315 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label11_true-unreach-call.c [2018-11-07 09:34:18,325 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:34:18,334 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:34:18,349 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:34:18,397 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:34:18,398 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:34:18,398 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:34:18,398 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:34:18,398 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:34:18,398 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:34:18,398 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:34:18,399 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:34:18,439 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 09:34:18,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-11-07 09:34:18,454 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:34:18,455 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 09:34:18,458 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:34:18,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:34:18,465 INFO L82 PathProgramCache]: Analyzing trace with hash 2146476495, now seen corresponding path program 1 times [2018-11-07 09:34:18,468 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:34:18,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:34:18,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:34:18,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:34:18,522 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:34:18,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:34:19,051 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 09:34:19,056 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:34:19,057 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 09:34:19,057 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:34:19,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:34:19,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:34:19,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:34:19,090 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 09:34:25,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:34:25,092 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 09:34:25,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:34:25,094 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2018-11-07 09:34:25,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:34:25,126 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 09:34:25,127 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 09:34:25,140 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 09:34:25,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 09:34:25,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 09:34:25,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 09:34:25,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2715 transitions. [2018-11-07 09:34:25,330 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2715 transitions. Word has length 49 [2018-11-07 09:34:25,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:34:25,331 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2715 transitions. [2018-11-07 09:34:25,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:34:25,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2715 transitions. [2018-11-07 09:34:25,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-11-07 09:34:25,345 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:34:25,346 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] [2018-11-07 09:34:25,346 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:34:25,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:34:25,347 INFO L82 PathProgramCache]: Analyzing trace with hash -108782427, now seen corresponding path program 1 times [2018-11-07 09:34:25,347 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:34:25,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:34:25,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:34:25,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:34:25,349 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:34:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:34:25,701 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:34:25,915 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 09:34:25,915 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:34:25,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 09:34:25,917 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:34:25,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 09:34:25,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 09:34:25,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 09:34:25,921 INFO L87 Difference]: Start difference. First operand 1474 states and 2715 transitions. Second operand 5 states. [2018-11-07 09:34:35,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:34:35,315 INFO L93 Difference]: Finished difference Result 4419 states and 8226 transitions. [2018-11-07 09:34:35,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:34:35,316 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2018-11-07 09:34:35,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:34:35,335 INFO L225 Difference]: With dead ends: 4419 [2018-11-07 09:34:35,336 INFO L226 Difference]: Without dead ends: 2951 [2018-11-07 09:34:35,341 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 09:34:35,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-11-07 09:34:35,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2925. [2018-11-07 09:34:35,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2018-11-07 09:34:35,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 4901 transitions. [2018-11-07 09:34:35,436 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 4901 transitions. Word has length 120 [2018-11-07 09:34:35,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:34:35,437 INFO L480 AbstractCegarLoop]: Abstraction has 2925 states and 4901 transitions. [2018-11-07 09:34:35,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 09:34:35,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 4901 transitions. [2018-11-07 09:34:35,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-11-07 09:34:35,441 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:34:35,441 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] [2018-11-07 09:34:35,442 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:34:35,442 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:34:35,442 INFO L82 PathProgramCache]: Analyzing trace with hash 579963756, now seen corresponding path program 1 times [2018-11-07 09:34:35,442 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:34:35,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:34:35,443 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:34:35,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:34:35,444 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:34:35,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:34:35,659 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 09:34:35,659 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:34:35,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:34:35,660 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:34:35,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:34:35,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:34:35,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:34:35,661 INFO L87 Difference]: Start difference. First operand 2925 states and 4901 transitions. Second operand 6 states. [2018-11-07 09:34:46,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:34:46,337 INFO L93 Difference]: Finished difference Result 11199 states and 19625 transitions. [2018-11-07 09:34:46,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 09:34:46,337 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-11-07 09:34:46,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:34:46,408 INFO L225 Difference]: With dead ends: 11199 [2018-11-07 09:34:46,408 INFO L226 Difference]: Without dead ends: 8280 [2018-11-07 09:34:46,438 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:34:46,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8280 states. [2018-11-07 09:34:46,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8280 to 8210. [2018-11-07 09:34:46,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8210 states. [2018-11-07 09:34:46,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8210 states to 8210 states and 12155 transitions. [2018-11-07 09:34:46,719 INFO L78 Accepts]: Start accepts. Automaton has 8210 states and 12155 transitions. Word has length 125 [2018-11-07 09:34:46,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:34:46,720 INFO L480 AbstractCegarLoop]: Abstraction has 8210 states and 12155 transitions. [2018-11-07 09:34:46,720 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:34:46,720 INFO L276 IsEmpty]: Start isEmpty. Operand 8210 states and 12155 transitions. [2018-11-07 09:34:46,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-11-07 09:34:46,723 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:34:46,723 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] [2018-11-07 09:34:46,723 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:34:46,724 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:34:46,724 INFO L82 PathProgramCache]: Analyzing trace with hash -699084424, now seen corresponding path program 1 times [2018-11-07 09:34:46,724 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:34:46,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:34:46,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:34:46,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:34:46,726 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:34:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:34:46,921 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 09:34:46,921 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:34:46,922 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:34:46,922 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:34:46,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:34:46,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:34:46,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:34:46,923 INFO L87 Difference]: Start difference. First operand 8210 states and 12155 transitions. Second operand 4 states. [2018-11-07 09:34:54,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:34:54,619 INFO L93 Difference]: Finished difference Result 30093 states and 48164 transitions. [2018-11-07 09:34:54,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:34:54,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2018-11-07 09:34:54,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:34:54,761 INFO L225 Difference]: With dead ends: 30093 [2018-11-07 09:34:54,762 INFO L226 Difference]: Without dead ends: 21889 [2018-11-07 09:34:54,834 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:34:54,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21889 states. [2018-11-07 09:34:55,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21889 to 21887. [2018-11-07 09:34:55,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21887 states. [2018-11-07 09:34:55,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21887 states to 21887 states and 32689 transitions. [2018-11-07 09:34:55,500 INFO L78 Accepts]: Start accepts. Automaton has 21887 states and 32689 transitions. Word has length 147 [2018-11-07 09:34:55,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:34:55,500 INFO L480 AbstractCegarLoop]: Abstraction has 21887 states and 32689 transitions. [2018-11-07 09:34:55,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:34:55,501 INFO L276 IsEmpty]: Start isEmpty. Operand 21887 states and 32689 transitions. [2018-11-07 09:34:55,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-11-07 09:34:55,517 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:34:55,518 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:34:55,518 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:34:55,518 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:34:55,519 INFO L82 PathProgramCache]: Analyzing trace with hash -2087141983, now seen corresponding path program 1 times [2018-11-07 09:34:55,519 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:34:55,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:34:55,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:34:55,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:34:55,520 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:34:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:34:55,862 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:34:56,293 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 09:34:56,294 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:34:56,294 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:34:56,294 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:34:56,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:34:56,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:34:56,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:34:56,296 INFO L87 Difference]: Start difference. First operand 21887 states and 32689 transitions. Second operand 6 states. [2018-11-07 09:35:02,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:35:02,918 INFO L93 Difference]: Finished difference Result 56189 states and 86082 transitions. [2018-11-07 09:35:02,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:35:02,919 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 230 [2018-11-07 09:35:02,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:35:03,085 INFO L225 Difference]: With dead ends: 56189 [2018-11-07 09:35:03,085 INFO L226 Difference]: Without dead ends: 34308 [2018-11-07 09:35:03,168 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:35:03,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34308 states. [2018-11-07 09:35:04,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34308 to 34219. [2018-11-07 09:35:04,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34219 states. [2018-11-07 09:35:04,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34219 states to 34219 states and 46601 transitions. [2018-11-07 09:35:04,238 INFO L78 Accepts]: Start accepts. Automaton has 34219 states and 46601 transitions. Word has length 230 [2018-11-07 09:35:04,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:35:04,239 INFO L480 AbstractCegarLoop]: Abstraction has 34219 states and 46601 transitions. [2018-11-07 09:35:04,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:35:04,239 INFO L276 IsEmpty]: Start isEmpty. Operand 34219 states and 46601 transitions. [2018-11-07 09:35:04,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-11-07 09:35:04,256 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:35:04,257 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:35:04,257 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:35:04,257 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:35:04,258 INFO L82 PathProgramCache]: Analyzing trace with hash 374301254, now seen corresponding path program 1 times [2018-11-07 09:35:04,258 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:35:04,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:35:04,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:35:04,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:35:04,259 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:35:04,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:35:04,781 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 156 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:35:04,781 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:35:04,781 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:35:04,782 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 247 with the following transitions: [2018-11-07 09:35:04,785 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], [1911], [1915], [1917], [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], [2132], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [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], [2328], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 09:35:04,859 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:35:04,859 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:35:05,486 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:35:05,489 INFO L272 AbstractInterpreter]: Visited 128 different actions 128 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 09:35:05,534 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:35:05,534 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:35:06,036 INFO L227 lantSequenceWeakener]: Weakened 237 states. On average, predicates are now at 77.9% of their original sizes. [2018-11-07 09:35:06,037 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:35:06,292 INFO L415 sIntCurrentIteration]: We unified 245 AI predicates to 245 [2018-11-07 09:35:06,292 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:35:06,297 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:35:06,297 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 09:35:06,297 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:35:06,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:35:06,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:35:06,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:35:06,299 INFO L87 Difference]: Start difference. First operand 34219 states and 46601 transitions. Second operand 6 states. [2018-11-07 09:36:43,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:36:43,847 INFO L93 Difference]: Finished difference Result 69137 states and 93973 transitions. [2018-11-07 09:36:43,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:36:43,848 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 246 [2018-11-07 09:36:43,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:36:43,973 INFO L225 Difference]: With dead ends: 69137 [2018-11-07 09:36:43,974 INFO L226 Difference]: Without dead ends: 34924 [2018-11-07 09:36:44,103 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 246 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:36:44,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34924 states. [2018-11-07 09:36:44,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34924 to 34922. [2018-11-07 09:36:44,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34922 states. [2018-11-07 09:36:44,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34922 states to 34922 states and 47316 transitions. [2018-11-07 09:36:44,840 INFO L78 Accepts]: Start accepts. Automaton has 34922 states and 47316 transitions. Word has length 246 [2018-11-07 09:36:44,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:36:44,841 INFO L480 AbstractCegarLoop]: Abstraction has 34922 states and 47316 transitions. [2018-11-07 09:36:44,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:36:44,841 INFO L276 IsEmpty]: Start isEmpty. Operand 34922 states and 47316 transitions. [2018-11-07 09:36:44,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2018-11-07 09:36:44,861 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:36:44,862 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, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 09:36:44,862 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:36:44,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:36:44,863 INFO L82 PathProgramCache]: Analyzing trace with hash 458529416, now seen corresponding path program 1 times [2018-11-07 09:36:44,863 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:36:44,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:36:44,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:36:44,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:36:44,864 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:36:44,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:36:45,400 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 09:36:45,610 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 09:36:46,100 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 185 proven. 207 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:36:46,100 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:36:46,100 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:36:46,101 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 434 with the following transitions: [2018-11-07 09:36:46,101 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], [1911], [1915], [1917], [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], [2132], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [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], [2328], [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 09:36:46,109 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:36:46,109 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:36:46,354 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:36:46,354 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 09:36:46,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:36:46,371 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:36:46,781 INFO L227 lantSequenceWeakener]: Weakened 430 states. On average, predicates are now at 77.68% of their original sizes. [2018-11-07 09:36:46,782 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:36:47,127 INFO L415 sIntCurrentIteration]: We unified 432 AI predicates to 432 [2018-11-07 09:36:47,127 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:36:47,127 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:36:47,128 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2018-11-07 09:36:47,128 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:36:47,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 09:36:47,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 09:36:47,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:36:47,129 INFO L87 Difference]: Start difference. First operand 34922 states and 47316 transitions. Second operand 10 states. [2018-11-07 09:37:55,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:37:55,046 INFO L93 Difference]: Finished difference Result 71954 states and 96894 transitions. [2018-11-07 09:37:55,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 09:37:55,047 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 433 [2018-11-07 09:37:55,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:37:55,169 INFO L225 Difference]: With dead ends: 71954 [2018-11-07 09:37:55,169 INFO L226 Difference]: Without dead ends: 35627 [2018-11-07 09:37:55,267 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 441 GetRequests, 424 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 09:37:55,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35627 states. [2018-11-07 09:37:55,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35627 to 35625. [2018-11-07 09:37:55,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35625 states. [2018-11-07 09:37:55,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35625 states to 35625 states and 48018 transitions. [2018-11-07 09:37:55,979 INFO L78 Accepts]: Start accepts. Automaton has 35625 states and 48018 transitions. Word has length 433 [2018-11-07 09:37:55,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:37:55,979 INFO L480 AbstractCegarLoop]: Abstraction has 35625 states and 48018 transitions. [2018-11-07 09:37:55,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 09:37:55,980 INFO L276 IsEmpty]: Start isEmpty. Operand 35625 states and 48018 transitions. [2018-11-07 09:37:56,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1009 [2018-11-07 09:37:56,027 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:37:56,028 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, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:37:56,028 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:37:56,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:37:56,029 INFO L82 PathProgramCache]: Analyzing trace with hash 360719607, now seen corresponding path program 1 times [2018-11-07 09:37:56,029 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:37:56,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:37:56,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:37:56,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:37:56,030 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:37:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:37:56,764 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 Received shutdown request... [2018-11-07 09:37:57,668 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 88 proven. 471 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-11-07 09:37:57,669 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:37:57,669 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:37:57,669 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1009 with the following transitions: [2018-11-07 09:37:57,670 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], [1911], [1915], [1917], [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], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [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], [2328], [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 09:37:57,686 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:37:57,686 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:37:57,687 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-07 09:37:57,687 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-07 09:37:57,689 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 09:37:57,689 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:37:57,689 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 09:37:57,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:37:57,705 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:37:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:37:57,997 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:37:58,113 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 09:37:58,315 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:37:58,315 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 09:37:58,320 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 09:37:58,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:37:58 BoogieIcfgContainer [2018-11-07 09:37:58,320 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 09:37:58,321 INFO L168 Benchmark]: Toolchain (without parser) took 230743.76 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -756.9 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-11-07 09:37:58,322 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 09:37:58,323 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1697.60 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-07 09:37:58,324 INFO L168 Benchmark]: Boogie Procedure Inliner took 279.40 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -959.9 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 09:37:58,324 INFO L168 Benchmark]: Boogie Preprocessor took 197.21 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2018-11-07 09:37:58,325 INFO L168 Benchmark]: RCFGBuilder took 8549.89 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 513.8 MB). Peak memory consumption was 513.8 MB. Max. memory is 7.1 GB. [2018-11-07 09:37:58,326 INFO L168 Benchmark]: TraceAbstraction took 220013.31 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 2.2 GB in the end (delta: -472.6 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-07 09:37:58,331 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1697.60 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 279.40 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -959.9 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 197.21 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8549.89 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 513.8 MB). Peak memory consumption was 513.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 220013.31 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 2.2 GB in the end (delta: -472.6 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 135]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 135). Cancelled while BasicCegarLoop was analyzing trace of length 1009 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 8 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 219.9s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 206.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2525 SDtfs, 17186 SDslu, 1171 SDs, 0 SdLazy, 27404 SolverSat, 6126 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 159.5s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 727 GetRequests, 677 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35625occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.0s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9976893164421262 AbsIntWeakeningRatio, 0.08567208271787297 AbsIntAvgWeakeningVarsNumRemoved, 16.459379615952734 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.7s AutomataMinimizationTime, 7 MinimizatonAttempts, 191 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 1350 NumberOfCodeBlocks, 1350 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1343 ConstructedInterpolants, 0 QuantifiedInterpolants, 2213981 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 514/723 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown