java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label54_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 00:18:33,641 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 00:18:33,643 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 00:18:33,663 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 00:18:33,663 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 00:18:33,664 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 00:18:33,665 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 00:18:33,667 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 00:18:33,669 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 00:18:33,670 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 00:18:33,671 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 00:18:33,671 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 00:18:33,672 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 00:18:33,673 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 00:18:33,674 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 00:18:33,675 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 00:18:33,676 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 00:18:33,677 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 00:18:33,679 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 00:18:33,681 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 00:18:33,682 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 00:18:33,683 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 00:18:33,686 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-25 00:18:33,686 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-25 00:18:33,686 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-25 00:18:33,687 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-25 00:18:33,688 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-25 00:18:33,689 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-25 00:18:33,690 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-25 00:18:33,691 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-25 00:18:33,691 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-25 00:18:33,691 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-25 00:18:33,694 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 00:18:33,722 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 00:18:33,722 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 00:18:33,726 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 00:18:33,727 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 00:18:33,729 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 00:18:33,729 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 00:18:33,729 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 00:18:33,729 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 00:18:33,730 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 00:18:33,730 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 00:18:33,730 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 00:18:33,730 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 00:18:33,730 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 00:18:33,731 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 00:18:33,731 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 00:18:33,731 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 00:18:33,732 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 00:18:33,733 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 00:18:33,733 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 00:18:33,733 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 00:18:33,733 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 00:18:33,733 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 00:18:33,734 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 00:18:33,734 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 00:18:33,734 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 00:18:33,734 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 00:18:33,735 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 00:18:33,735 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 00:18:33,735 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 00:18:33,735 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 00:18:33,735 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 00:18:33,737 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 00:18:33,737 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 00:18:33,737 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 00:18:33,737 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 00:18:33,737 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 00:18:33,787 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 00:18:33,804 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 00:18:33,809 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 00:18:33,811 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 00:18:33,812 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 00:18:33,812 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label54_true-unreach-call.c [2018-10-25 00:18:33,876 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6c103800f/be6b5c36e2bf480096755b87673ad2e2/FLAG748aedd45 [2018-10-25 00:18:34,549 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 00:18:34,550 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label54_true-unreach-call.c [2018-10-25 00:18:34,569 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6c103800f/be6b5c36e2bf480096755b87673ad2e2/FLAG748aedd45 [2018-10-25 00:18:34,587 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6c103800f/be6b5c36e2bf480096755b87673ad2e2 [2018-10-25 00:18:34,599 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 00:18:34,600 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 00:18:34,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 00:18:34,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 00:18:34,606 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 00:18:34,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:18:34" (1/1) ... [2018-10-25 00:18:34,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28b071f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:18:34, skipping insertion in model container [2018-10-25 00:18:34,611 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:18:34" (1/1) ... [2018-10-25 00:18:34,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 00:18:34,713 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 00:18:35,522 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:18:35,528 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 00:18:35,862 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:18:35,886 INFO L193 MainTranslator]: Completed translation [2018-10-25 00:18:35,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:18:35 WrapperNode [2018-10-25 00:18:35,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 00:18:35,888 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 00:18:35,888 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 00:18:35,888 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 00:18:35,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:18:35" (1/1) ... [2018-10-25 00:18:35,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:18:35" (1/1) ... [2018-10-25 00:18:36,188 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 00:18:36,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 00:18:36,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 00:18:36,189 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 00:18:36,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:18:35" (1/1) ... [2018-10-25 00:18:36,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:18:35" (1/1) ... [2018-10-25 00:18:36,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:18:35" (1/1) ... [2018-10-25 00:18:36,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:18:35" (1/1) ... [2018-10-25 00:18:36,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:18:35" (1/1) ... [2018-10-25 00:18:36,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:18:35" (1/1) ... [2018-10-25 00:18:36,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:18:35" (1/1) ... [2018-10-25 00:18:36,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 00:18:36,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 00:18:36,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 00:18:36,329 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 00:18:36,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:18:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 00:18:36,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 00:18:36,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 00:18:36,392 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 00:18:36,392 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 00:18:36,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 00:18:36,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 00:18:36,393 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 00:18:36,393 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 00:18:41,314 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 00:18:41,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:18:41 BoogieIcfgContainer [2018-10-25 00:18:41,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 00:18:41,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 00:18:41,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 00:18:41,320 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 00:18:41,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 12:18:34" (1/3) ... [2018-10-25 00:18:41,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@642c7430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:18:41, skipping insertion in model container [2018-10-25 00:18:41,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:18:35" (2/3) ... [2018-10-25 00:18:41,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@642c7430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:18:41, skipping insertion in model container [2018-10-25 00:18:41,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:18:41" (3/3) ... [2018-10-25 00:18:41,325 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label54_true-unreach-call.c [2018-10-25 00:18:41,337 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 00:18:41,347 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 00:18:41,368 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 00:18:41,430 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 00:18:41,430 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 00:18:41,430 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 00:18:41,430 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 00:18:41,431 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 00:18:41,431 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 00:18:41,431 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 00:18:41,431 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 00:18:41,482 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-25 00:18:41,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-25 00:18:41,501 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:18:41,503 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:18:41,505 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:18:41,512 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:18:41,512 INFO L82 PathProgramCache]: Analyzing trace with hash -332126540, now seen corresponding path program 1 times [2018-10-25 00:18:41,515 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:18:41,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:18:41,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:18:41,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:18:41,570 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:18:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:18:42,454 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:18:42,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:18:42,662 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:18:42,663 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 00:18:42,663 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:18:42,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:18:42,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:18:42,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:18:42,685 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-10-25 00:18:45,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:18:45,126 INFO L93 Difference]: Finished difference Result 848 states and 1491 transitions. [2018-10-25 00:18:45,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:18:45,129 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 173 [2018-10-25 00:18:45,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:18:45,171 INFO L225 Difference]: With dead ends: 848 [2018-10-25 00:18:45,171 INFO L226 Difference]: Without dead ends: 534 [2018-10-25 00:18:45,179 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:18:45,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2018-10-25 00:18:45,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 532. [2018-10-25 00:18:45,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2018-10-25 00:18:45,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 867 transitions. [2018-10-25 00:18:45,277 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 867 transitions. Word has length 173 [2018-10-25 00:18:45,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:18:45,278 INFO L481 AbstractCegarLoop]: Abstraction has 532 states and 867 transitions. [2018-10-25 00:18:45,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:18:45,279 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 867 transitions. [2018-10-25 00:18:45,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-25 00:18:45,288 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:18:45,291 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-25 00:18:45,292 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:18:45,292 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:18:45,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1662155856, now seen corresponding path program 1 times [2018-10-25 00:18:45,294 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:18:45,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:18:45,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:18:45,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:18:45,297 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:18:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:18:45,902 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:18:45,903 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:18:45,903 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 00:18:45,903 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:18:45,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:18:45,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:18:45,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:18:45,908 INFO L87 Difference]: Start difference. First operand 532 states and 867 transitions. Second operand 3 states. [2018-10-25 00:18:47,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:18:47,877 INFO L93 Difference]: Finished difference Result 1484 states and 2494 transitions. [2018-10-25 00:18:47,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:18:47,877 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 186 [2018-10-25 00:18:47,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:18:47,887 INFO L225 Difference]: With dead ends: 1484 [2018-10-25 00:18:47,887 INFO L226 Difference]: Without dead ends: 958 [2018-10-25 00:18:47,891 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:18:47,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2018-10-25 00:18:47,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 952. [2018-10-25 00:18:47,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2018-10-25 00:18:47,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1499 transitions. [2018-10-25 00:18:47,955 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1499 transitions. Word has length 186 [2018-10-25 00:18:47,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:18:47,956 INFO L481 AbstractCegarLoop]: Abstraction has 952 states and 1499 transitions. [2018-10-25 00:18:47,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:18:47,956 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1499 transitions. [2018-10-25 00:18:47,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-25 00:18:47,963 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:18:47,963 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2018-10-25 00:18:47,964 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:18:47,964 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:18:47,964 INFO L82 PathProgramCache]: Analyzing trace with hash -173836503, now seen corresponding path program 1 times [2018-10-25 00:18:47,964 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:18:47,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:18:47,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:18:47,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:18:47,966 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:18:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:18:48,236 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:18:48,432 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:18:48,432 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:18:48,433 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:18:48,434 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 198 with the following transitions: [2018-10-25 00:18:48,438 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [845], [847], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:18:48,517 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:18:48,518 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:18:49,739 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:18:49,741 INFO L272 AbstractInterpreter]: Visited 174 different actions 174 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-25 00:18:49,790 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:18:49,790 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:18:50,943 INFO L232 lantSequenceWeakener]: Weakened 186 states. On average, predicates are now at 72.14% of their original sizes. [2018-10-25 00:18:50,944 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:18:51,711 INFO L413 sIntCurrentIteration]: We have 196 unified AI predicates [2018-10-25 00:18:51,712 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:18:51,713 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:18:51,713 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [5] total 18 [2018-10-25 00:18:51,713 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:18:51,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-25 00:18:51,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-25 00:18:51,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-10-25 00:18:51,715 INFO L87 Difference]: Start difference. First operand 952 states and 1499 transitions. Second operand 15 states. [2018-10-25 00:19:20,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:19:20,486 INFO L93 Difference]: Finished difference Result 2108 states and 3325 transitions. [2018-10-25 00:19:20,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 00:19:20,486 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 197 [2018-10-25 00:19:20,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:19:20,493 INFO L225 Difference]: With dead ends: 2108 [2018-10-25 00:19:20,493 INFO L226 Difference]: Without dead ends: 1162 [2018-10-25 00:19:20,496 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 197 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2018-10-25 00:19:20,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2018-10-25 00:19:20,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1160. [2018-10-25 00:19:20,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1160 states. [2018-10-25 00:19:20,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1715 transitions. [2018-10-25 00:19:20,528 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1715 transitions. Word has length 197 [2018-10-25 00:19:20,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:19:20,529 INFO L481 AbstractCegarLoop]: Abstraction has 1160 states and 1715 transitions. [2018-10-25 00:19:20,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-25 00:19:20,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1715 transitions. [2018-10-25 00:19:20,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-25 00:19:20,535 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:19:20,535 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2018-10-25 00:19:20,536 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:19:20,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:19:20,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1967318092, now seen corresponding path program 1 times [2018-10-25 00:19:20,536 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:19:20,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:19:20,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:19:20,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:19:20,538 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:19:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:19:20,756 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:19:20,757 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:19:20,757 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:19:20,757 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 207 with the following transitions: [2018-10-25 00:19:20,758 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [845], [847], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:19:20,775 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:19:20,775 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:19:24,772 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:19:24,772 INFO L272 AbstractInterpreter]: Visited 179 different actions 532 times. Merged at 7 different actions 19 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-25 00:19:24,779 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:19:24,779 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:19:27,885 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 90.7% of their original sizes. [2018-10-25 00:19:27,885 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:19:34,822 INFO L413 sIntCurrentIteration]: We have 205 unified AI predicates [2018-10-25 00:19:34,822 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:19:34,823 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:19:34,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [5] total 16 [2018-10-25 00:19:34,823 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:19:34,823 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-25 00:19:34,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-25 00:19:34,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2018-10-25 00:19:34,824 INFO L87 Difference]: Start difference. First operand 1160 states and 1715 transitions. Second operand 13 states. [2018-10-25 00:20:39,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:20:39,839 INFO L93 Difference]: Finished difference Result 3740 states and 5834 transitions. [2018-10-25 00:20:39,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-25 00:20:39,840 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 206 [2018-10-25 00:20:39,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:20:39,855 INFO L225 Difference]: With dead ends: 3740 [2018-10-25 00:20:39,855 INFO L226 Difference]: Without dead ends: 2794 [2018-10-25 00:20:39,861 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 210 GetRequests, 70 SyntacticMatches, 124 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2018-10-25 00:20:39,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2794 states. [2018-10-25 00:20:39,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2794 to 2788. [2018-10-25 00:20:39,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2788 states. [2018-10-25 00:20:39,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 3967 transitions. [2018-10-25 00:20:39,941 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 3967 transitions. Word has length 206 [2018-10-25 00:20:39,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:20:39,942 INFO L481 AbstractCegarLoop]: Abstraction has 2788 states and 3967 transitions. [2018-10-25 00:20:39,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-25 00:20:39,942 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 3967 transitions. [2018-10-25 00:20:39,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-10-25 00:20:39,951 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:20:39,952 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:20:39,952 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:20:39,953 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:20:39,953 INFO L82 PathProgramCache]: Analyzing trace with hash 913604782, now seen corresponding path program 1 times [2018-10-25 00:20:39,953 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:20:39,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:20:39,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:20:39,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:20:39,954 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:20:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:20:40,209 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:20:40,367 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 35 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-25 00:20:40,367 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:20:40,368 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:20:40,368 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 214 with the following transitions: [2018-10-25 00:20:40,368 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [95], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [845], [847], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:20:40,376 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:20:40,376 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:20:41,109 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:20:41,110 INFO L272 AbstractInterpreter]: Visited 177 different actions 348 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:20:41,117 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:20:41,117 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:20:42,424 INFO L232 lantSequenceWeakener]: Weakened 210 states. On average, predicates are now at 71.95% of their original sizes. [2018-10-25 00:20:42,425 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:20:42,826 INFO L413 sIntCurrentIteration]: We have 212 unified AI predicates [2018-10-25 00:20:42,827 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:20:42,827 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:20:42,828 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-10-25 00:20:42,828 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:20:42,829 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-25 00:20:42,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-25 00:20:42,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2018-10-25 00:20:42,829 INFO L87 Difference]: Start difference. First operand 2788 states and 3967 transitions. Second operand 20 states. [2018-10-25 00:21:40,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:21:40,895 INFO L93 Difference]: Finished difference Result 4789 states and 7043 transitions. [2018-10-25 00:21:40,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 00:21:40,896 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 213 [2018-10-25 00:21:40,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:21:40,912 INFO L225 Difference]: With dead ends: 4789 [2018-10-25 00:21:40,912 INFO L226 Difference]: Without dead ends: 3000 [2018-10-25 00:21:40,919 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 221 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=180, Invalid=632, Unknown=0, NotChecked=0, Total=812 [2018-10-25 00:21:40,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2018-10-25 00:21:40,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 2999. [2018-10-25 00:21:40,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2999 states. [2018-10-25 00:21:41,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 4197 transitions. [2018-10-25 00:21:41,008 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 4197 transitions. Word has length 213 [2018-10-25 00:21:41,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:21:41,009 INFO L481 AbstractCegarLoop]: Abstraction has 2999 states and 4197 transitions. [2018-10-25 00:21:41,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-25 00:21:41,009 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 4197 transitions. [2018-10-25 00:21:41,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-10-25 00:21:41,023 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:21:41,023 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 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] [2018-10-25 00:21:41,024 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:21:41,024 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:21:41,024 INFO L82 PathProgramCache]: Analyzing trace with hash 711691309, now seen corresponding path program 1 times [2018-10-25 00:21:41,024 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:21:41,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:41,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:21:41,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:41,026 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:21:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:21:41,347 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:21:41,703 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 63 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-25 00:21:41,703 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:21:41,703 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:21:41,704 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 220 with the following transitions: [2018-10-25 00:21:41,704 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [16], [17], [21], [24], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [845], [847], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:21:41,712 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:21:41,712 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:21:46,799 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:21:46,799 INFO L272 AbstractInterpreter]: Visited 182 different actions 539 times. Merged at 8 different actions 21 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-25 00:21:46,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:21:46,808 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:21:46,808 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:21:46,808 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-25 00:21:46,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:21:46,818 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:21:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:21:47,062 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:21:47,430 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2018-10-25 00:21:47,582 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 54 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-10-25 00:21:47,583 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:21:48,020 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 48 proven. 12 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-10-25 00:21:48,043 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:21:48,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-25 00:21:48,044 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:21:48,044 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 00:21:48,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 00:21:48,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-10-25 00:21:48,045 INFO L87 Difference]: Start difference. First operand 2999 states and 4197 transitions. Second operand 9 states. [2018-10-25 00:21:49,080 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-25 00:21:53,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:21:53,171 INFO L93 Difference]: Finished difference Result 10559 states and 17173 transitions. [2018-10-25 00:21:53,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-25 00:21:53,172 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 219 [2018-10-25 00:21:53,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:21:53,230 INFO L225 Difference]: With dead ends: 10559 [2018-10-25 00:21:53,230 INFO L226 Difference]: Without dead ends: 8192 [2018-10-25 00:21:53,246 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 447 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2018-10-25 00:21:53,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8192 states. [2018-10-25 00:21:53,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8192 to 8004. [2018-10-25 00:21:53,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8004 states. [2018-10-25 00:21:53,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8004 states to 8004 states and 11446 transitions. [2018-10-25 00:21:53,510 INFO L78 Accepts]: Start accepts. Automaton has 8004 states and 11446 transitions. Word has length 219 [2018-10-25 00:21:53,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:21:53,510 INFO L481 AbstractCegarLoop]: Abstraction has 8004 states and 11446 transitions. [2018-10-25 00:21:53,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 00:21:53,511 INFO L276 IsEmpty]: Start isEmpty. Operand 8004 states and 11446 transitions. [2018-10-25 00:21:53,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-10-25 00:21:53,535 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:21:53,536 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:21:53,536 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:21:53,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:21:53,536 INFO L82 PathProgramCache]: Analyzing trace with hash 67883900, now seen corresponding path program 1 times [2018-10-25 00:21:53,537 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:21:53,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:53,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:21:53,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:53,538 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:21:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:21:54,036 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-25 00:21:54,036 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:21:54,037 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:21:54,037 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 247 with the following transitions: [2018-10-25 00:21:54,037 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [68], [73], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [127], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [845], [847], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:21:54,043 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:21:54,043 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:21:59,220 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:21:59,220 INFO L272 AbstractInterpreter]: Visited 179 different actions 535 times. Merged at 7 different actions 22 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-25 00:21:59,230 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:21:59,230 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:21:59,230 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:21:59,231 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 00:21:59,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:21:59,241 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:21:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:21:59,446 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:21:59,542 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-10-25 00:21:59,543 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:21:59,620 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-10-25 00:21:59,643 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:21:59,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-10-25 00:21:59,643 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:21:59,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:21:59,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:21:59,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-25 00:21:59,644 INFO L87 Difference]: Start difference. First operand 8004 states and 11446 transitions. Second operand 3 states. [2018-10-25 00:22:01,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:22:01,061 INFO L93 Difference]: Finished difference Result 15088 states and 21951 transitions. [2018-10-25 00:22:01,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:22:01,067 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 246 [2018-10-25 00:22:01,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:22:01,111 INFO L225 Difference]: With dead ends: 15088 [2018-10-25 00:22:01,114 INFO L226 Difference]: Without dead ends: 8008 [2018-10-25 00:22:01,148 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 490 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-25 00:22:01,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8008 states. [2018-10-25 00:22:01,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8008 to 8004. [2018-10-25 00:22:01,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8004 states. [2018-10-25 00:22:01,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8004 states to 8004 states and 10728 transitions. [2018-10-25 00:22:01,347 INFO L78 Accepts]: Start accepts. Automaton has 8004 states and 10728 transitions. Word has length 246 [2018-10-25 00:22:01,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:22:01,348 INFO L481 AbstractCegarLoop]: Abstraction has 8004 states and 10728 transitions. [2018-10-25 00:22:01,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:22:01,348 INFO L276 IsEmpty]: Start isEmpty. Operand 8004 states and 10728 transitions. [2018-10-25 00:22:01,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-10-25 00:22:01,372 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:22:01,373 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2018-10-25 00:22:01,373 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:22:01,373 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:22:01,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1385700341, now seen corresponding path program 1 times [2018-10-25 00:22:01,374 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:22:01,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:22:01,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:22:01,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:22:01,376 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:22:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:22:01,657 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:22:02,512 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 84 proven. 59 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-10-25 00:22:02,512 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:22:02,512 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:22:02,513 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 261 with the following transitions: [2018-10-25 00:22:02,513 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [68], [73], [75], [76], [80], [84], [88], [92], [95], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [845], [847], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:22:02,519 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:22:02,519 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:22:07,857 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:22:07,857 INFO L272 AbstractInterpreter]: Visited 180 different actions 543 times. Merged at 8 different actions 27 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-25 00:22:07,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:22:07,861 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:22:07,861 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:22:07,861 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 00:22:07,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:22:07,871 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:22:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:22:08,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:22:08,618 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-10-25 00:22:08,619 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:22:08,898 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 93 proven. 20 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-10-25 00:22:08,920 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:22:08,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2018-10-25 00:22:08,920 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:22:08,921 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-25 00:22:08,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-25 00:22:08,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-10-25 00:22:08,922 INFO L87 Difference]: Start difference. First operand 8004 states and 10728 transitions. Second operand 12 states. [2018-10-25 00:22:15,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:22:15,796 INFO L93 Difference]: Finished difference Result 24314 states and 34197 transitions. [2018-10-25 00:22:15,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-25 00:22:15,796 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 260 [2018-10-25 00:22:15,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:22:15,886 INFO L225 Difference]: With dead ends: 24314 [2018-10-25 00:22:15,886 INFO L226 Difference]: Without dead ends: 17102 [2018-10-25 00:22:15,927 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 542 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=409, Invalid=1313, Unknown=0, NotChecked=0, Total=1722 [2018-10-25 00:22:15,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17102 states. [2018-10-25 00:22:16,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17102 to 17086. [2018-10-25 00:22:16,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17086 states. [2018-10-25 00:22:16,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17086 states to 17086 states and 22760 transitions. [2018-10-25 00:22:16,311 INFO L78 Accepts]: Start accepts. Automaton has 17086 states and 22760 transitions. Word has length 260 [2018-10-25 00:22:16,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:22:16,311 INFO L481 AbstractCegarLoop]: Abstraction has 17086 states and 22760 transitions. [2018-10-25 00:22:16,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-25 00:22:16,312 INFO L276 IsEmpty]: Start isEmpty. Operand 17086 states and 22760 transitions. [2018-10-25 00:22:16,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-10-25 00:22:16,364 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:22:16,364 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 00:22:16,365 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:22:16,365 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:22:16,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1233204200, now seen corresponding path program 1 times [2018-10-25 00:22:16,365 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:22:16,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:22:16,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:22:16,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:22:16,366 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:22:16,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:22:16,881 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 141 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-10-25 00:22:16,882 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:22:16,882 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:22:16,882 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 314 with the following transitions: [2018-10-25 00:22:16,882 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [95], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [845], [847], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:22:16,887 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:22:16,887 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:22:22,189 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:22:22,189 INFO L272 AbstractInterpreter]: Visited 181 different actions 543 times. Merged at 8 different actions 28 times. Widened at 1 different actions 1 times. Found 4 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-25 00:22:22,194 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:22:22,194 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:22:22,195 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:22:22,195 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 00:22:22,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:22:22,203 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:22:22,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:22:22,412 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:22:22,980 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-25 00:22:22,980 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:22:23,135 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-25 00:22:23,804 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-25 00:22:23,835 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:22:23,836 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2018-10-25 00:22:23,836 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:22:23,837 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-25 00:22:23,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-25 00:22:23,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-10-25 00:22:23,838 INFO L87 Difference]: Start difference. First operand 17086 states and 22760 transitions. Second operand 8 states. [2018-10-25 00:22:30,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:22:30,312 INFO L93 Difference]: Finished difference Result 64339 states and 103130 transitions. [2018-10-25 00:22:30,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-25 00:22:30,313 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 313 [2018-10-25 00:22:30,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:22:30,629 INFO L225 Difference]: With dead ends: 64339 [2018-10-25 00:22:30,630 INFO L226 Difference]: Without dead ends: 48161 [2018-10-25 00:22:30,770 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 647 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=249, Invalid=1011, Unknown=0, NotChecked=0, Total=1260 [2018-10-25 00:22:30,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48161 states. Received shutdown request... [2018-10-25 00:22:32,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48161 to 44607. [2018-10-25 00:22:32,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44607 states. [2018-10-25 00:22:32,100 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 00:22:32,106 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 00:22:32,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 12:22:32 BoogieIcfgContainer [2018-10-25 00:22:32,107 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 00:22:32,108 INFO L168 Benchmark]: Toolchain (without parser) took 237508.43 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 1.0 GB in the end (delta: 388.3 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-10-25 00:22:32,109 INFO L168 Benchmark]: CDTParser took 0.19 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. [2018-10-25 00:22:32,110 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1285.38 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-25 00:22:32,110 INFO L168 Benchmark]: Boogie Procedure Inliner took 300.71 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -877.0 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-25 00:22:32,115 INFO L168 Benchmark]: Boogie Preprocessor took 139.51 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-10-25 00:22:32,115 INFO L168 Benchmark]: RCFGBuilder took 4986.48 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 272.1 MB). Peak memory consumption was 272.1 MB. Max. memory is 7.1 GB. [2018-10-25 00:22:32,117 INFO L168 Benchmark]: TraceAbstraction took 230790.57 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.0 GB in the end (delta: 894.9 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-10-25 00:22:32,124 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 1285.38 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 300.71 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -877.0 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 139.51 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4986.48 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 272.1 MB). Peak memory consumption was 272.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230790.57 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.0 GB in the end (delta: 894.9 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1533]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1533). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 230.6s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 177.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2662 SDtfs, 16069 SDslu, 2993 SDs, 0 SdLazy, 23264 SolverSat, 3862 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 125.4s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 2882 GetRequests, 2579 SyntacticMatches, 138 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1880 ImplicationChecksByTransitivity, 14.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17086occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 27.0s AbstIntTime, 7 AbstIntIterations, 3 AbstIntStrong, 0.9989368753517611 AbsIntWeakeningRatio, 0.31484502446982054 AbsIntAvgWeakeningVarsNumRemoved, 19.43393148450245 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 225 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 7.7s InterpolantComputationTime, 3051 NumberOfCodeBlocks, 3051 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 4072 ConstructedInterpolants, 0 QuantifiedInterpolants, 1616922 SizeOfPredicates, 5 NumberOfNonLiveVariables, 5244 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 17 InterpolantComputations, 4 PerfectInterpolantSequences, 1640/1768 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown