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/Problem11_label25_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 07:34:56,507 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 07:34:56,509 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 07:34:56,521 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 07:34:56,521 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 07:34:56,522 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 07:34:56,524 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 07:34:56,525 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 07:34:56,528 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 07:34:56,529 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 07:34:56,530 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 07:34:56,530 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 07:34:56,531 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 07:34:56,532 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 07:34:56,533 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 07:34:56,534 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 07:34:56,535 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 07:34:56,537 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 07:34:56,539 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 07:34:56,540 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 07:34:56,541 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 07:34:56,543 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 07:34:56,545 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 07:34:56,545 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 07:34:56,545 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 07:34:56,546 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 07:34:56,547 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 07:34:56,548 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 07:34:56,549 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 07:34:56,550 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 07:34:56,550 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 07:34:56,551 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 07:34:56,551 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 07:34:56,552 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 07:34:56,553 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 07:34:56,553 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 07:34:56,554 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 [2018-10-27 07:34:56,577 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 07:34:56,577 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 07:34:56,578 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 07:34:56,578 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 07:34:56,578 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 07:34:56,579 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 07:34:56,579 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 07:34:56,579 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 07:34:56,579 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 07:34:56,579 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 07:34:56,580 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 07:34:56,580 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 07:34:56,580 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 07:34:56,580 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 07:34:56,581 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 07:34:56,581 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 07:34:56,581 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 07:34:56,581 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 07:34:56,582 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 07:34:56,582 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 07:34:56,582 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 07:34:56,582 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 07:34:56,582 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 07:34:56,583 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 07:34:56,583 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 07:34:56,583 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 07:34:56,583 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 07:34:56,583 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 07:34:56,584 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 07:34:56,584 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 07:34:56,584 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 07:34:56,584 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 07:34:56,584 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 07:34:56,584 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 07:34:56,585 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 07:34:56,585 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 07:34:56,641 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 07:34:56,655 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 07:34:56,658 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 07:34:56,660 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 07:34:56,660 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 07:34:56,661 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label25_true-unreach-call.c [2018-10-27 07:34:56,720 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fca5bda27/3a55cf5e5d1148618c27eadd62fb6021/FLAG16e2d9adc [2018-10-27 07:34:57,341 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 07:34:57,342 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label25_true-unreach-call.c [2018-10-27 07:34:57,364 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fca5bda27/3a55cf5e5d1148618c27eadd62fb6021/FLAG16e2d9adc [2018-10-27 07:34:57,388 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fca5bda27/3a55cf5e5d1148618c27eadd62fb6021 [2018-10-27 07:34:57,402 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 07:34:57,404 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 07:34:57,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 07:34:57,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 07:34:57,413 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 07:34:57,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:34:57" (1/1) ... [2018-10-27 07:34:57,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49bb8d53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:34:57, skipping insertion in model container [2018-10-27 07:34:57,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:34:57" (1/1) ... [2018-10-27 07:34:57,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 07:34:57,520 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 07:34:58,156 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:34:58,161 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 07:34:58,366 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:34:58,386 INFO L193 MainTranslator]: Completed translation [2018-10-27 07:34:58,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:34:58 WrapperNode [2018-10-27 07:34:58,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 07:34:58,387 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 07:34:58,388 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 07:34:58,388 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 07:34:58,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:34:58" (1/1) ... [2018-10-27 07:34:58,441 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:34:58" (1/1) ... [2018-10-27 07:34:58,707 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 07:34:58,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 07:34:58,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 07:34:58,708 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 07:34:58,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:34:58" (1/1) ... [2018-10-27 07:34:58,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:34:58" (1/1) ... [2018-10-27 07:34:58,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:34:58" (1/1) ... [2018-10-27 07:34:58,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:34:58" (1/1) ... [2018-10-27 07:34:58,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:34:58" (1/1) ... [2018-10-27 07:34:58,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:34:58" (1/1) ... [2018-10-27 07:34:58,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:34:58" (1/1) ... [2018-10-27 07:34:58,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 07:34:58,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 07:34:58,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 07:34:58,850 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 07:34:58,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:34:58" (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 [2018-10-27 07:34:58,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 07:34:58,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 07:34:58,922 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 07:34:58,922 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 07:34:58,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 07:34:58,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 07:34:58,923 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 07:34:58,923 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 07:35:03,808 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 07:35:03,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:35:03 BoogieIcfgContainer [2018-10-27 07:35:03,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 07:35:03,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 07:35:03,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 07:35:03,814 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 07:35:03,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:34:57" (1/3) ... [2018-10-27 07:35:03,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a40e561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:35:03, skipping insertion in model container [2018-10-27 07:35:03,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:34:58" (2/3) ... [2018-10-27 07:35:03,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a40e561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:35:03, skipping insertion in model container [2018-10-27 07:35:03,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:35:03" (3/3) ... [2018-10-27 07:35:03,818 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label25_true-unreach-call.c [2018-10-27 07:35:03,828 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 07:35:03,837 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 07:35:03,855 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 07:35:03,894 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 07:35:03,894 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 07:35:03,895 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 07:35:03,895 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 07:35:03,895 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 07:35:03,895 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 07:35:03,895 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 07:35:03,895 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 07:35:03,923 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-27 07:35:03,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-27 07:35:03,931 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:35:03,933 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] [2018-10-27 07:35:03,935 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:35:03,941 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:35:03,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1384704100, now seen corresponding path program 1 times [2018-10-27 07:35:03,944 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:35:03,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:35:03,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:35:03,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:35:03,996 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:35:04,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:35:04,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:35:04,455 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:35:04,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 07:35:04,456 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:35:04,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 07:35:04,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 07:35:04,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 07:35:04,486 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-27 07:35:08,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:35:08,639 INFO L93 Difference]: Finished difference Result 996 states and 1776 transitions. [2018-10-27 07:35:08,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 07:35:08,641 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-10-27 07:35:08,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:35:08,666 INFO L225 Difference]: With dead ends: 996 [2018-10-27 07:35:08,666 INFO L226 Difference]: Without dead ends: 697 [2018-10-27 07:35:08,677 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 07:35:08,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2018-10-27 07:35:08,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 481. [2018-10-27 07:35:08,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2018-10-27 07:35:08,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 742 transitions. [2018-10-27 07:35:08,775 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 742 transitions. Word has length 38 [2018-10-27 07:35:08,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:35:08,776 INFO L481 AbstractCegarLoop]: Abstraction has 481 states and 742 transitions. [2018-10-27 07:35:08,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 07:35:08,776 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 742 transitions. [2018-10-27 07:35:08,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-27 07:35:08,782 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:35:08,783 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:35:08,783 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:35:08,783 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:35:08,784 INFO L82 PathProgramCache]: Analyzing trace with hash -331878893, now seen corresponding path program 1 times [2018-10-27 07:35:08,784 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:35:08,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:35:08,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:35:08,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:35:08,785 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:35:08,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:35:09,128 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:35:09,263 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:35:09,263 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:35:09,264 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:35:09,264 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:35:09,266 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:35:09,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:35:09,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:35:09,267 INFO L87 Difference]: Start difference. First operand 481 states and 742 transitions. Second operand 6 states. [2018-10-27 07:35:13,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:35:13,269 INFO L93 Difference]: Finished difference Result 1725 states and 2777 transitions. [2018-10-27 07:35:13,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:35:13,270 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2018-10-27 07:35:13,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:35:13,287 INFO L225 Difference]: With dead ends: 1725 [2018-10-27 07:35:13,287 INFO L226 Difference]: Without dead ends: 1250 [2018-10-27 07:35:13,293 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 07:35:13,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2018-10-27 07:35:13,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1231. [2018-10-27 07:35:13,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1231 states. [2018-10-27 07:35:13,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1812 transitions. [2018-10-27 07:35:13,392 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1812 transitions. Word has length 111 [2018-10-27 07:35:13,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:35:13,393 INFO L481 AbstractCegarLoop]: Abstraction has 1231 states and 1812 transitions. [2018-10-27 07:35:13,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:35:13,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1812 transitions. [2018-10-27 07:35:13,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-27 07:35:13,396 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:35:13,401 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:35:13,401 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:35:13,402 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:35:13,402 INFO L82 PathProgramCache]: Analyzing trace with hash -689587928, now seen corresponding path program 1 times [2018-10-27 07:35:13,402 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:35:13,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:35:13,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:35:13,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:35:13,404 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:35:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:35:13,624 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:35:13,625 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:35:13,625 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 07:35:13,625 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:35:13,626 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 07:35:13,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 07:35:13,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 07:35:13,626 INFO L87 Difference]: Start difference. First operand 1231 states and 1812 transitions. Second operand 4 states. [2018-10-27 07:35:16,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:35:16,396 INFO L93 Difference]: Finished difference Result 3240 states and 4918 transitions. [2018-10-27 07:35:16,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 07:35:16,400 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2018-10-27 07:35:16,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:35:16,415 INFO L225 Difference]: With dead ends: 3240 [2018-10-27 07:35:16,416 INFO L226 Difference]: Without dead ends: 2015 [2018-10-27 07:35:16,424 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 07:35:16,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2015 states. [2018-10-27 07:35:16,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2015 to 2000. [2018-10-27 07:35:16,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2000 states. [2018-10-27 07:35:16,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2000 states to 2000 states and 2897 transitions. [2018-10-27 07:35:16,490 INFO L78 Accepts]: Start accepts. Automaton has 2000 states and 2897 transitions. Word has length 112 [2018-10-27 07:35:16,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:35:16,491 INFO L481 AbstractCegarLoop]: Abstraction has 2000 states and 2897 transitions. [2018-10-27 07:35:16,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 07:35:16,491 INFO L276 IsEmpty]: Start isEmpty. Operand 2000 states and 2897 transitions. [2018-10-27 07:35:16,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-27 07:35:16,496 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:35:16,497 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:35:16,497 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:35:16,497 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:35:16,497 INFO L82 PathProgramCache]: Analyzing trace with hash -2107878529, now seen corresponding path program 1 times [2018-10-27 07:35:16,498 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:35:16,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:35:16,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:35:16,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:35:16,499 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:35:16,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:35:16,829 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:35:16,829 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:35:16,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:35:16,830 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:35:16,830 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:35:16,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:35:16,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:35:16,831 INFO L87 Difference]: Start difference. First operand 2000 states and 2897 transitions. Second operand 6 states. [2018-10-27 07:35:23,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:35:23,064 INFO L93 Difference]: Finished difference Result 7663 states and 13269 transitions. [2018-10-27 07:35:23,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 07:35:23,065 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2018-10-27 07:35:23,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:35:23,127 INFO L225 Difference]: With dead ends: 7663 [2018-10-27 07:35:23,127 INFO L226 Difference]: Without dead ends: 5669 [2018-10-27 07:35:23,189 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 07:35:23,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5669 states. [2018-10-27 07:35:23,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5669 to 5142. [2018-10-27 07:35:23,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5142 states. [2018-10-27 07:35:23,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5142 states to 5142 states and 7307 transitions. [2018-10-27 07:35:23,409 INFO L78 Accepts]: Start accepts. Automaton has 5142 states and 7307 transitions. Word has length 137 [2018-10-27 07:35:23,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:35:23,409 INFO L481 AbstractCegarLoop]: Abstraction has 5142 states and 7307 transitions. [2018-10-27 07:35:23,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:35:23,410 INFO L276 IsEmpty]: Start isEmpty. Operand 5142 states and 7307 transitions. [2018-10-27 07:35:23,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-10-27 07:35:23,419 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:35:23,419 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 07:35:23,419 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:35:23,419 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:35:23,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1631754857, now seen corresponding path program 1 times [2018-10-27 07:35:23,420 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:35:23,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:35:23,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:35:23,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:35:23,422 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:35:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:35:23,709 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:35:23,710 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:35:23,710 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:35:23,711 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 186 with the following transitions: [2018-10-27 07:35:23,713 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [205], [207], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [502], [503], [507], [511], [514], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:35:23,762 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:35:23,762 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:35:24,125 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 07:35:24,126 INFO L272 AbstractInterpreter]: Visited 80 different actions 80 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-27 07:35:24,166 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:35:24,166 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 07:35:24,730 INFO L227 lantSequenceWeakener]: Weakened 176 states. On average, predicates are now at 73.39% of their original sizes. [2018-10-27 07:35:24,731 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 07:35:24,964 INFO L415 sIntCurrentIteration]: We unified 184 AI predicates to 184 [2018-10-27 07:35:24,964 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 07:35:24,965 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 07:35:24,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-27 07:35:24,966 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:35:24,967 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:35:24,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:35:24,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:35:24,968 INFO L87 Difference]: Start difference. First operand 5142 states and 7307 transitions. Second operand 6 states. [2018-10-27 07:35:56,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:35:56,340 INFO L93 Difference]: Finished difference Result 10470 states and 14826 transitions. [2018-10-27 07:35:56,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 07:35:56,340 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 185 [2018-10-27 07:35:56,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:35:56,375 INFO L225 Difference]: With dead ends: 10470 [2018-10-27 07:35:56,375 INFO L226 Difference]: Without dead ends: 5334 [2018-10-27 07:35:56,404 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 185 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 07:35:56,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5334 states. [2018-10-27 07:35:56,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5334 to 5332. [2018-10-27 07:35:56,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5332 states. [2018-10-27 07:35:56,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5332 states to 5332 states and 7507 transitions. [2018-10-27 07:35:56,569 INFO L78 Accepts]: Start accepts. Automaton has 5332 states and 7507 transitions. Word has length 185 [2018-10-27 07:35:56,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:35:56,570 INFO L481 AbstractCegarLoop]: Abstraction has 5332 states and 7507 transitions. [2018-10-27 07:35:56,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:35:56,570 INFO L276 IsEmpty]: Start isEmpty. Operand 5332 states and 7507 transitions. [2018-10-27 07:35:56,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-27 07:35:56,578 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:35:56,578 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 07:35:56,579 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:35:56,579 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:35:56,579 INFO L82 PathProgramCache]: Analyzing trace with hash -826417273, now seen corresponding path program 1 times [2018-10-27 07:35:56,579 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:35:56,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:35:56,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:35:56,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:35:56,580 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:35:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:35:57,140 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:35:57,140 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:35:57,140 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:35:57,141 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 243 with the following transitions: [2018-10-27 07:35:57,141 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [205], [207], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [502], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:35:57,154 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:35:57,154 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:35:57,719 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 07:35:57,720 INFO L272 AbstractInterpreter]: Visited 141 different actions 409 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-27 07:35:57,756 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:35:57,758 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 07:35:57,758 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:35:57,758 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 [2018-10-27 07:35:57,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:35:57,770 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 07:35:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:35:57,881 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 07:35:58,344 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:35:58,344 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 07:35:58,721 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:35:58,746 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 07:35:58,746 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-27 07:35:58,746 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 07:35:58,747 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 07:35:58,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 07:35:58,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-27 07:35:58,748 INFO L87 Difference]: Start difference. First operand 5332 states and 7507 transitions. Second operand 9 states. [2018-10-27 07:36:07,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:36:07,282 INFO L93 Difference]: Finished difference Result 14930 states and 27251 transitions. [2018-10-27 07:36:07,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-27 07:36:07,282 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 242 [2018-10-27 07:36:07,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:36:07,391 INFO L225 Difference]: With dead ends: 14930 [2018-10-27 07:36:07,392 INFO L226 Difference]: Without dead ends: 9794 [2018-10-27 07:36:07,559 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 487 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2018-10-27 07:36:07,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9794 states. [2018-10-27 07:36:07,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9794 to 9682. [2018-10-27 07:36:07,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9682 states. [2018-10-27 07:36:08,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9682 states to 9682 states and 16280 transitions. [2018-10-27 07:36:08,082 INFO L78 Accepts]: Start accepts. Automaton has 9682 states and 16280 transitions. Word has length 242 [2018-10-27 07:36:08,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:36:08,082 INFO L481 AbstractCegarLoop]: Abstraction has 9682 states and 16280 transitions. [2018-10-27 07:36:08,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 07:36:08,083 INFO L276 IsEmpty]: Start isEmpty. Operand 9682 states and 16280 transitions. [2018-10-27 07:36:08,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-10-27 07:36:08,094 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:36:08,095 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 07:36:08,095 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:36:08,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:36:08,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1119037538, now seen corresponding path program 1 times [2018-10-27 07:36:08,096 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:36:08,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:36:08,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:36:08,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:36:08,097 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:36:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:36:09,092 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-27 07:36:09,092 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:36:09,092 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:36:09,093 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 251 with the following transitions: [2018-10-27 07:36:09,093 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [205], [207], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:36:09,105 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:36:09,105 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:36:10,158 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 07:36:10,158 INFO L272 AbstractInterpreter]: Visited 126 different actions 375 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-27 07:36:10,194 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:36:10,194 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 07:36:10,195 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:36:10,195 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 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 [2018-10-27 07:36:10,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:36:10,211 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 07:36:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:36:10,326 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 07:36:11,398 WARN L179 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2018-10-27 07:36:11,567 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-27 07:36:11,568 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 07:36:11,790 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-10-27 07:36:12,165 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 6 [2018-10-27 07:36:12,631 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-27 07:36:12,652 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-27 07:36:12,652 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-10-27 07:36:12,652 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:36:12,653 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:36:12,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:36:12,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-27 07:36:12,654 INFO L87 Difference]: Start difference. First operand 9682 states and 16280 transitions. Second operand 6 states. [2018-10-27 07:36:18,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:36:18,414 INFO L93 Difference]: Finished difference Result 25236 states and 45636 transitions. [2018-10-27 07:36:18,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 07:36:18,417 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 250 [2018-10-27 07:36:18,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:36:18,602 INFO L225 Difference]: With dead ends: 25236 [2018-10-27 07:36:18,602 INFO L226 Difference]: Without dead ends: 15750 [2018-10-27 07:36:18,701 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 495 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-27 07:36:18,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15750 states. [2018-10-27 07:36:19,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15750 to 15748. [2018-10-27 07:36:19,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15748 states. [2018-10-27 07:36:19,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15748 states to 15748 states and 27353 transitions. [2018-10-27 07:36:19,491 INFO L78 Accepts]: Start accepts. Automaton has 15748 states and 27353 transitions. Word has length 250 [2018-10-27 07:36:19,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:36:19,492 INFO L481 AbstractCegarLoop]: Abstraction has 15748 states and 27353 transitions. [2018-10-27 07:36:19,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:36:19,492 INFO L276 IsEmpty]: Start isEmpty. Operand 15748 states and 27353 transitions. [2018-10-27 07:36:19,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-10-27 07:36:19,503 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:36:19,503 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 07:36:19,504 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:36:19,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:36:19,504 INFO L82 PathProgramCache]: Analyzing trace with hash -198818813, now seen corresponding path program 1 times [2018-10-27 07:36:19,504 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:36:19,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:36:19,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:36:19,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:36:19,506 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:36:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:36:20,683 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 63 proven. 6 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-10-27 07:36:20,683 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:36:20,683 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:36:20,684 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 261 with the following transitions: [2018-10-27 07:36:20,684 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [205], [207], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [574], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:36:20,694 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:36:20,694 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:36:21,186 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 07:36:21,186 INFO L272 AbstractInterpreter]: Visited 141 different actions 558 times. Merged at 7 different actions 28 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-27 07:36:21,222 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:36:21,223 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 07:36:21,223 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:36:21,223 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 [2018-10-27 07:36:21,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:36:21,242 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 07:36:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:36:21,331 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 07:36:21,499 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:36:21,499 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 07:36:21,769 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:36:21,790 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 07:36:21,790 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2018-10-27 07:36:21,790 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 07:36:21,791 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-27 07:36:21,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-27 07:36:21,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-10-27 07:36:21,792 INFO L87 Difference]: Start difference. First operand 15748 states and 27353 transitions. Second operand 11 states. [2018-10-27 07:36:27,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:36:27,314 INFO L93 Difference]: Finished difference Result 42484 states and 84954 transitions. [2018-10-27 07:36:27,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 07:36:27,315 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 260 [2018-10-27 07:36:27,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:36:27,568 INFO L225 Difference]: With dead ends: 42484 [2018-10-27 07:36:27,568 INFO L226 Difference]: Without dead ends: 26452 [2018-10-27 07:36:27,784 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 522 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2018-10-27 07:36:27,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26452 states. [2018-10-27 07:36:28,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26452 to 26431. [2018-10-27 07:36:28,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26431 states. [2018-10-27 07:36:29,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26431 states to 26431 states and 42275 transitions. [2018-10-27 07:36:29,591 INFO L78 Accepts]: Start accepts. Automaton has 26431 states and 42275 transitions. Word has length 260 [2018-10-27 07:36:29,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:36:29,592 INFO L481 AbstractCegarLoop]: Abstraction has 26431 states and 42275 transitions. [2018-10-27 07:36:29,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-27 07:36:29,592 INFO L276 IsEmpty]: Start isEmpty. Operand 26431 states and 42275 transitions. [2018-10-27 07:36:29,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-10-27 07:36:29,622 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:36:29,623 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:36:29,623 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:36:29,623 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:36:29,624 INFO L82 PathProgramCache]: Analyzing trace with hash 2030082556, now seen corresponding path program 1 times [2018-10-27 07:36:29,624 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:36:29,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:36:29,625 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:36:29,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:36:29,625 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:36:29,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:36:30,239 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 238 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-27 07:36:30,240 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:36:30,240 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:36:30,240 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 318 with the following transitions: [2018-10-27 07:36:30,240 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [205], [207], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [502], [503], [507], [511], [514], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:36:30,245 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:36:30,245 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:36:30,708 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 07:36:30,708 INFO L272 AbstractInterpreter]: Visited 142 different actions 423 times. Merged at 8 different actions 20 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-27 07:36:30,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:36:30,728 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 07:36:30,729 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:36:30,729 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 [2018-10-27 07:36:30,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:36:30,737 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 07:36:30,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:36:30,844 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 07:36:31,045 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2018-10-27 07:36:31,045 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 07:36:31,131 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2018-10-27 07:36:31,152 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-27 07:36:31,153 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-10-27 07:36:31,153 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:36:31,153 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 07:36:31,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 07:36:31,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-27 07:36:31,154 INFO L87 Difference]: Start difference. First operand 26431 states and 42275 transitions. Second operand 3 states. [2018-10-27 07:36:33,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:36:33,358 INFO L93 Difference]: Finished difference Result 61246 states and 105648 transitions. [2018-10-27 07:36:33,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 07:36:33,358 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 317 [2018-10-27 07:36:33,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:36:33,577 INFO L225 Difference]: With dead ends: 61246 [2018-10-27 07:36:33,577 INFO L226 Difference]: Without dead ends: 35010 [2018-10-27 07:36:33,791 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 633 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-27 07:36:33,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35010 states. [2018-10-27 07:36:34,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35010 to 34805. [2018-10-27 07:36:34,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34805 states. [2018-10-27 07:36:35,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34805 states to 34805 states and 55023 transitions. [2018-10-27 07:36:35,140 INFO L78 Accepts]: Start accepts. Automaton has 34805 states and 55023 transitions. Word has length 317 [2018-10-27 07:36:35,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:36:35,140 INFO L481 AbstractCegarLoop]: Abstraction has 34805 states and 55023 transitions. [2018-10-27 07:36:35,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 07:36:35,140 INFO L276 IsEmpty]: Start isEmpty. Operand 34805 states and 55023 transitions. [2018-10-27 07:36:35,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-10-27 07:36:35,186 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:36:35,186 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:36:35,187 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:36:35,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:36:35,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1090686184, now seen corresponding path program 1 times [2018-10-27 07:36:35,187 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:36:35,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:36:35,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:36:35,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:36:35,188 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:36:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:36:35,514 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2018-10-27 07:36:35,514 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:36:35,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 07:36:35,514 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:36:35,515 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 07:36:35,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 07:36:35,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 07:36:35,515 INFO L87 Difference]: Start difference. First operand 34805 states and 55023 transitions. Second operand 4 states. [2018-10-27 07:36:39,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:36:39,285 INFO L93 Difference]: Finished difference Result 78667 states and 137857 transitions. [2018-10-27 07:36:39,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 07:36:39,285 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 347 [2018-10-27 07:36:39,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:36:39,670 INFO L225 Difference]: With dead ends: 78667 [2018-10-27 07:36:39,670 INFO L226 Difference]: Without dead ends: 44057 [2018-10-27 07:36:40,084 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 07:36:40,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44057 states. [2018-10-27 07:36:41,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44057 to 43853. [2018-10-27 07:36:41,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43853 states. [2018-10-27 07:36:42,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43853 states to 43853 states and 69710 transitions. [2018-10-27 07:36:42,030 INFO L78 Accepts]: Start accepts. Automaton has 43853 states and 69710 transitions. Word has length 347 [2018-10-27 07:36:42,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:36:42,031 INFO L481 AbstractCegarLoop]: Abstraction has 43853 states and 69710 transitions. [2018-10-27 07:36:42,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 07:36:42,031 INFO L276 IsEmpty]: Start isEmpty. Operand 43853 states and 69710 transitions. [2018-10-27 07:36:42,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-10-27 07:36:42,114 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:36:42,115 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 07:36:42,115 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:36:42,115 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:36:42,115 INFO L82 PathProgramCache]: Analyzing trace with hash 38563041, now seen corresponding path program 1 times [2018-10-27 07:36:42,115 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:36:42,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:36:42,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:36:42,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:36:42,117 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:36:42,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:36:43,007 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-10-27 07:36:43,008 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:36:43,008 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:36:43,008 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 347 with the following transitions: [2018-10-27 07:36:43,008 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [205], [207], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [870], [874], [878], [889], [893], [897], [901], [905], [909], [913], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [971], [975], [979], [983], [987], [991], [994], [999], [1001], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:36:43,013 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:36:43,013 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:36:43,511 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 07:36:43,512 INFO L272 AbstractInterpreter]: Visited 187 different actions 736 times. Merged at 7 different actions 24 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-27 07:36:43,534 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:36:43,534 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 07:36:43,534 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:36:43,534 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 07:36:43,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:36:43,542 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 07:36:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:36:43,644 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 07:36:45,817 WARN L179 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2018-10-27 07:36:46,487 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 11 proven. 58 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-10-27 07:36:46,487 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 07:36:46,897 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:46,962 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:47,022 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:47,083 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:47,125 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:47,186 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:47,252 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:47,297 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:47,336 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:47,381 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:47,466 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:47,512 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:47,610 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:47,717 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:47,759 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:47,819 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:47,880 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:47,921 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:47,985 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:48,026 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:48,229 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:48,276 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:48,317 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:48,358 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:48,405 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:48,442 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:48,522 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:48,607 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:48,647 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:48,710 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:48,765 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:48,817 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:48,894 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:48,971 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:49,016 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:49,349 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:49,530 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:49,576 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:49,901 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:50,147 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:50,185 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:50,223 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:50,262 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:50,300 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:50,457 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:50,497 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:50,548 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:50,586 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:50,627 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:50,665 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:50,703 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:50,744 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:50,784 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:50,823 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:50,860 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:50,930 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:50,967 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:51,021 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:51,059 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:51,098 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:51,136 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:51,173 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:51,210 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:51,248 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:51,286 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:51,323 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:51,364 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:51,476 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:51,515 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:51,554 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:51,608 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:51,644 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:51,684 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:51,721 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:51,759 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:51,797 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:51,832 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:51,869 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:51,905 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:51,943 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:51,979 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:52,018 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:52,056 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:52,093 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:52,134 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:52,172 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:52,210 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:52,249 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:52,287 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:52,327 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:52,374 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:52,413 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:52,451 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:52,510 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:52,826 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:52,864 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:52,903 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:52,939 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:52,976 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:53,014 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:53,052 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:53,090 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:53,128 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:53,203 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:53,242 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:53,280 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:53,318 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:53,354 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:53,391 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:53,726 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:54,051 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:54,093 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:54,131 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:54,168 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:54,441 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:54,481 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:54,520 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:54,573 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:54,611 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:54,649 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:54,687 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:54,724 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:54,762 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:54,805 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:54,842 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:54,879 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:54,917 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:55,031 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:55,068 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:55,105 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:55,142 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:55,178 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:55,216 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:55,278 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:55,316 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:55,352 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:55,388 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:55,424 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:55,460 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:55,499 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:55,536 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:55,574 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:55,611 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:55,648 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:55,685 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:55,723 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:55,759 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:55,797 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:55,834 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:55,871 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:55,926 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:55,965 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:56,003 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:56,041 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:56,078 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:56,115 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:56,153 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:56,195 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:56,233 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:56,272 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:56,318 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:56,355 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:56,391 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:56,447 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:56,497 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:56,534 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:36:56,571 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:00,509 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 65 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:37:00,530 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 07:37:00,530 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22 [2018-10-27 07:37:00,530 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 07:37:00,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-27 07:37:00,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-27 07:37:00,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=333, Unknown=1, NotChecked=0, Total=462 [2018-10-27 07:37:00,532 INFO L87 Difference]: Start difference. First operand 43853 states and 69710 transitions. Second operand 16 states. [2018-10-27 07:37:05,628 WARN L179 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 35 [2018-10-27 07:37:22,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:37:22,701 INFO L93 Difference]: Finished difference Result 132171 states and 244441 transitions. [2018-10-27 07:37:22,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-27 07:37:22,701 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 346 [2018-10-27 07:37:22,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:37:23,580 INFO L225 Difference]: With dead ends: 132171 [2018-10-27 07:37:23,580 INFO L226 Difference]: Without dead ends: 88513 [2018-10-27 07:37:23,960 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 516 SyntacticMatches, 168 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2393 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=743, Invalid=2118, Unknown=1, NotChecked=0, Total=2862 [2018-10-27 07:37:24,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88513 states. [2018-10-27 07:37:27,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88513 to 82766. [2018-10-27 07:37:27,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82766 states. [2018-10-27 07:37:28,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82766 states to 82766 states and 126099 transitions. [2018-10-27 07:37:28,206 INFO L78 Accepts]: Start accepts. Automaton has 82766 states and 126099 transitions. Word has length 346 [2018-10-27 07:37:28,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:37:28,206 INFO L481 AbstractCegarLoop]: Abstraction has 82766 states and 126099 transitions. [2018-10-27 07:37:28,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-27 07:37:28,206 INFO L276 IsEmpty]: Start isEmpty. Operand 82766 states and 126099 transitions. [2018-10-27 07:37:28,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2018-10-27 07:37:28,354 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:37:28,354 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 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] [2018-10-27 07:37:28,355 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:37:28,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:37:28,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1541558226, now seen corresponding path program 1 times [2018-10-27 07:37:28,355 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:37:28,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:37:28,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:37:28,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:37:28,357 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:37:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:37:28,885 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 351 proven. 94 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-27 07:37:28,886 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:37:28,886 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:37:28,886 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 482 with the following transitions: [2018-10-27 07:37:28,886 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [205], [207], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [726], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:37:28,896 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:37:28,896 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:37:31,169 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 07:37:31,170 INFO L272 AbstractInterpreter]: Visited 142 different actions 564 times. Merged at 8 different actions 30 times. Never widened. Found 7 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-27 07:37:31,174 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:37:31,174 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 07:37:31,174 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:37:31,174 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 07:37:31,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:37:31,184 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 07:37:31,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:37:31,339 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 07:37:31,500 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 594 proven. 2 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2018-10-27 07:37:31,500 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 07:37:31,729 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 351 proven. 94 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-27 07:37:31,751 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 07:37:31,751 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2018-10-27 07:37:31,751 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 07:37:31,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:37:31,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:37:31,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 07:37:31,753 INFO L87 Difference]: Start difference. First operand 82766 states and 126099 transitions. Second operand 6 states. [2018-10-27 07:37:36,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:37:36,349 INFO L93 Difference]: Finished difference Result 150916 states and 232206 transitions. [2018-10-27 07:37:36,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:37:36,350 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 481 [2018-10-27 07:37:36,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:37:36,782 INFO L225 Difference]: With dead ends: 150916 [2018-10-27 07:37:36,782 INFO L226 Difference]: Without dead ends: 72078 [2018-10-27 07:37:37,100 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 973 GetRequests, 963 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-10-27 07:37:37,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72078 states. [2018-10-27 07:37:38,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72078 to 71294. [2018-10-27 07:37:38,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71294 states. [2018-10-27 07:37:39,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71294 states to 71294 states and 102643 transitions. [2018-10-27 07:37:39,829 INFO L78 Accepts]: Start accepts. Automaton has 71294 states and 102643 transitions. Word has length 481 [2018-10-27 07:37:39,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:37:39,831 INFO L481 AbstractCegarLoop]: Abstraction has 71294 states and 102643 transitions. [2018-10-27 07:37:39,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:37:39,831 INFO L276 IsEmpty]: Start isEmpty. Operand 71294 states and 102643 transitions. [2018-10-27 07:37:39,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2018-10-27 07:37:39,959 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:37:39,959 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:37:39,960 INFO L424 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:37:39,960 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:37:39,960 INFO L82 PathProgramCache]: Analyzing trace with hash -108764721, now seen corresponding path program 1 times [2018-10-27 07:37:39,960 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:37:39,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:37:39,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:37:39,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:37:39,962 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:37:40,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:37:40,786 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 337 proven. 94 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2018-10-27 07:37:40,786 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:37:40,786 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:37:40,787 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 486 with the following transitions: [2018-10-27 07:37:40,787 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [205], [207], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [618], [623], [625], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [784], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:37:40,791 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:37:40,791 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:37:41,414 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 07:37:41,415 INFO L272 AbstractInterpreter]: Visited 143 different actions 571 times. Merged at 8 different actions 34 times. Widened at 1 different actions 1 times. Found 7 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-27 07:37:41,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:37:41,421 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 07:37:41,421 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:37:41,421 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 07:37:41,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:37:41,430 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 07:37:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:37:41,584 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 07:37:41,752 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 580 proven. 2 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2018-10-27 07:37:41,753 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 07:37:41,976 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 337 proven. 94 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2018-10-27 07:37:41,997 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 07:37:41,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-27 07:37:41,998 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 07:37:41,999 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 07:37:41,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 07:37:41,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-27 07:37:41,999 INFO L87 Difference]: Start difference. First operand 71294 states and 102643 transitions. Second operand 9 states. [2018-10-27 07:37:47,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:37:47,010 INFO L93 Difference]: Finished difference Result 141576 states and 197489 transitions. [2018-10-27 07:37:47,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 07:37:47,010 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 485 [2018-10-27 07:37:47,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:37:47,241 INFO L225 Difference]: With dead ends: 141576 [2018-10-27 07:37:47,241 INFO L226 Difference]: Without dead ends: 66503 [2018-10-27 07:37:47,558 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 989 GetRequests, 972 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2018-10-27 07:37:47,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66503 states. [2018-10-27 07:37:48,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66503 to 62907. [2018-10-27 07:37:48,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62907 states. [2018-10-27 07:37:48,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62907 states to 62907 states and 75796 transitions. [2018-10-27 07:37:48,680 INFO L78 Accepts]: Start accepts. Automaton has 62907 states and 75796 transitions. Word has length 485 [2018-10-27 07:37:48,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:37:48,681 INFO L481 AbstractCegarLoop]: Abstraction has 62907 states and 75796 transitions. [2018-10-27 07:37:48,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 07:37:48,681 INFO L276 IsEmpty]: Start isEmpty. Operand 62907 states and 75796 transitions. [2018-10-27 07:37:49,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2018-10-27 07:37:49,039 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:37:49,039 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:37:49,039 INFO L424 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:37:49,040 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:37:49,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1013416520, now seen corresponding path program 1 times [2018-10-27 07:37:49,040 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:37:49,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:37:49,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:37:49,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:37:49,041 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:37:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:37:49,493 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 136 proven. 280 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2018-10-27 07:37:49,493 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:37:49,493 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:37:49,493 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 495 with the following transitions: [2018-10-27 07:37:49,494 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [205], [207], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [570], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [870], [874], [878], [889], [893], [897], [901], [905], [909], [913], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [971], [975], [979], [983], [987], [991], [994], [999], [1001], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:37:49,497 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:37:49,497 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:37:50,291 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 07:37:50,292 INFO L272 AbstractInterpreter]: Visited 187 different actions 743 times. Merged at 9 different actions 36 times. Widened at 1 different actions 1 times. Found 8 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-27 07:37:50,297 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:37:50,297 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 07:37:50,297 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:37:50,297 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 07:37:50,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:37:50,307 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 07:37:50,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:37:50,467 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 07:37:51,063 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 381 proven. 29 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2018-10-27 07:37:51,063 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 07:37:51,290 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:51,333 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:51,370 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:51,406 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:51,512 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:51,545 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:51,577 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:51,613 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:51,648 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:51,685 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:51,722 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:51,850 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:51,886 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:51,921 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:51,956 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:52,003 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:54,409 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:54,445 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:54,481 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:54,516 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:54,551 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:54,586 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:54,620 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:54,664 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:54,697 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:54,730 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:54,763 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:54,796 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:54,830 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:54,863 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:54,910 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:54,942 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:55,000 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:55,035 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:55,067 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:55,132 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:55,165 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:55,199 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:55,256 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:55,288 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:55,321 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:55,352 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:55,557 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:55,590 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:55,621 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:55,662 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:55,701 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:55,734 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:55,766 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:55,798 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:55,926 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:55,959 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:56,009 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:56,044 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:56,077 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:56,112 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:56,364 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:56,399 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:56,433 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:56,464 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:56,496 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:56,527 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:56,559 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:56,592 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:56,624 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:56,680 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:56,716 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:56,749 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:56,807 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:56,839 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:56,872 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:56,938 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:56,972 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:57,003 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:57,037 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:57,152 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:57,188 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:57,222 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:57,256 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:57,289 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:57,324 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:57,366 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:57,406 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:57,440 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:57,474 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:57,509 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:57,545 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:57,580 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:57,615 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:57,651 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:57,688 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:57,724 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:57,758 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:57,792 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:57,829 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:57,864 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:57,901 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:57,936 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:57,973 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:58,010 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:58,046 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:58,090 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:58,125 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:58,159 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:58,193 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:58,229 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:58,263 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:58,299 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:58,336 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:58,372 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:58,407 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:58,441 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:58,475 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:58,572 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:58,607 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:58,641 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:58,677 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:58,711 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:58,746 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:58,780 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:58,815 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:58,851 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:58,889 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:58,924 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:58,962 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:58,998 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:59,225 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:59,262 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:59,299 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:59,336 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:59,369 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:59,404 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:59,444 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:59,479 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:59,515 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:59,549 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:59,592 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:59,627 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:59,662 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:59,700 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:59,734 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:59,770 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:59,806 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:59,842 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:59,877 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:59,912 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:59,946 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:37:59,980 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:38:00,017 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:38:00,054 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:38:00,091 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:38:00,125 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:38:00,161 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:38:00,196 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:38:00,232 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:38:00,266 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:38:00,301 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:38:00,339 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:38:00,376 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:38:00,412 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:38:00,448 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:38:00,486 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:38:00,520 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:38:00,556 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:38:00,590 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:38:00,624 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:38:00,658 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:38:01,627 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 408 proven. 2 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2018-10-27 07:38:01,648 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 07:38:01,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 16 [2018-10-27 07:38:01,649 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 07:38:01,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-27 07:38:01,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-27 07:38:01,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-10-27 07:38:01,651 INFO L87 Difference]: Start difference. First operand 62907 states and 75796 transitions. Second operand 12 states. [2018-10-27 07:38:13,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:38:13,279 INFO L93 Difference]: Finished difference Result 158277 states and 192064 transitions. [2018-10-27 07:38:13,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-27 07:38:13,279 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 494 [2018-10-27 07:38:13,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:38:13,555 INFO L225 Difference]: With dead ends: 158277 [2018-10-27 07:38:13,555 INFO L226 Difference]: Without dead ends: 101062 [2018-10-27 07:38:13,677 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1041 GetRequests, 836 SyntacticMatches, 169 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1838 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=313, Invalid=1093, Unknown=0, NotChecked=0, Total=1406 [2018-10-27 07:38:13,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101062 states. [2018-10-27 07:38:15,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101062 to 100252. [2018-10-27 07:38:15,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100252 states. [2018-10-27 07:38:15,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100252 states to 100252 states and 119941 transitions. [2018-10-27 07:38:15,368 INFO L78 Accepts]: Start accepts. Automaton has 100252 states and 119941 transitions. Word has length 494 [2018-10-27 07:38:15,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:38:15,368 INFO L481 AbstractCegarLoop]: Abstraction has 100252 states and 119941 transitions. [2018-10-27 07:38:15,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-27 07:38:15,369 INFO L276 IsEmpty]: Start isEmpty. Operand 100252 states and 119941 transitions. [2018-10-27 07:38:15,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2018-10-27 07:38:15,444 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:38:15,444 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 07:38:15,445 INFO L424 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:38:15,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:38:15,445 INFO L82 PathProgramCache]: Analyzing trace with hash 519090031, now seen corresponding path program 1 times [2018-10-27 07:38:15,445 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:38:15,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:38:15,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:38:15,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:38:15,446 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:38:15,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:38:16,010 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-27 07:38:16,194 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-27 07:38:16,704 WARN L179 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-27 07:38:17,138 WARN L179 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-10-27 07:38:18,070 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 365 proven. 94 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-10-27 07:38:18,071 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:38:18,071 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:38:18,071 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 543 with the following transitions: [2018-10-27 07:38:18,071 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [205], [207], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [614], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [870], [874], [878], [889], [893], [897], [901], [905], [909], [913], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [971], [975], [979], [983], [987], [991], [1002], [1005], [1008], [1012], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:38:18,075 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:38:18,075 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:38:19,232 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 07:38:19,233 INFO L272 AbstractInterpreter]: Visited 190 different actions 761 times. Merged at 9 different actions 37 times. Never widened. Found 10 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-27 07:38:19,241 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:38:19,241 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 07:38:19,241 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:38:19,241 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 07:38:19,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:38:19,249 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 07:38:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:38:19,411 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 07:38:19,751 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-27 07:38:20,957 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 608 proven. 2 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2018-10-27 07:38:20,957 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 07:38:22,376 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 365 proven. 94 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-10-27 07:38:22,397 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 07:38:22,398 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 8] total 20 [2018-10-27 07:38:22,398 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 07:38:22,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-27 07:38:22,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-27 07:38:22,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2018-10-27 07:38:22,399 INFO L87 Difference]: Start difference. First operand 100252 states and 119941 transitions. Second operand 15 states. [2018-10-27 07:38:23,908 WARN L179 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2018-10-27 07:38:24,806 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2018-10-27 07:38:25,577 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 Received shutdown request... [2018-10-27 07:38:28,311 WARN L187 SmtUtils]: Removed 6 from assertion stack [2018-10-27 07:38:28,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-27 07:38:28,312 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 07:38:28,318 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 07:38:28,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:38:28 BoogieIcfgContainer [2018-10-27 07:38:28,319 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 07:38:28,320 INFO L168 Benchmark]: Toolchain (without parser) took 210916.99 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-27 07:38:28,321 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. [2018-10-27 07:38:28,324 INFO L168 Benchmark]: CACSL2BoogieTranslator took 981.40 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-10-27 07:38:28,325 INFO L168 Benchmark]: Boogie Procedure Inliner took 319.58 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -844.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2018-10-27 07:38:28,326 INFO L168 Benchmark]: Boogie Preprocessor took 141.74 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 07:38:28,326 INFO L168 Benchmark]: RCFGBuilder took 4960.16 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 172.6 MB). Peak memory consumption was 172.6 MB. Max. memory is 7.1 GB. [2018-10-27 07:38:28,327 INFO L168 Benchmark]: TraceAbstraction took 204508.39 ms. Allocated memory was 2.3 GB in the beginning and 4.6 GB in the end (delta: 2.3 GB). Free memory was 2.0 GB in the beginning and 3.0 GB in the end (delta: -922.6 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-27 07:38:28,331 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 981.40 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 319.58 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -844.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 141.74 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4960.16 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 172.6 MB). Peak memory consumption was 172.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 204508.39 ms. Allocated memory was 2.3 GB in the beginning and 4.6 GB in the end (delta: 2.3 GB). Free memory was 2.0 GB in the beginning and 3.0 GB in the end (delta: -922.6 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 99). Cancelled while BasicCegarLoop was constructing difference of abstraction (100252states) and FLOYD_HOARE automaton (currently 29 states, 15 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 46. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 204.4s OverallTime, 15 OverallIterations, 5 TraceHistogramMax, 129.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3057 SDtfs, 23109 SDslu, 4561 SDs, 0 SdLazy, 40699 SolverSat, 7724 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 83.5s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 7300 GetRequests, 6711 SyntacticMatches, 359 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4848 ImplicationChecksByTransitivity, 38.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100252occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 8.6s AbstIntTime, 10 AbstIntIterations, 1 AbstIntStrong, 0.9974240523968786 AbsIntWeakeningRatio, 0.15217391304347827 AbsIntAvgWeakeningVarsNumRemoved, 18.081521739130434 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 16.8s AutomataMinimizationTime, 14 MinimizatonAttempts, 12260 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 43.8s InterpolantComputationTime, 7764 NumberOfCodeBlocks, 7764 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 11148 ConstructedInterpolants, 527 QuantifiedInterpolants, 33046516 SizeOfPredicates, 22 NumberOfNonLiveVariables, 5677 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 33 InterpolantComputations, 8 PerfectInterpolantSequences, 10624/11909 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown