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-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label49_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 14:09:55,427 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 14:09:55,429 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 14:09:55,441 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 14:09:55,442 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 14:09:55,443 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 14:09:55,444 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 14:09:55,446 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 14:09:55,447 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 14:09:55,448 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 14:09:55,449 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 14:09:55,449 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 14:09:55,450 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 14:09:55,451 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 14:09:55,453 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 14:09:55,453 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 14:09:55,454 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 14:09:55,456 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 14:09:55,458 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 14:09:55,460 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 14:09:55,461 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 14:09:55,462 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 14:09:55,464 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 14:09:55,465 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 14:09:55,465 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 14:09:55,466 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 14:09:55,467 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 14:09:55,467 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 14:09:55,468 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 14:09:55,469 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 14:09:55,470 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 14:09:55,470 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 14:09:55,471 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 14:09:55,471 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 14:09:55,474 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 14:09:55,474 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 14:09:55,475 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 14:09:55,507 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 14:09:55,507 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 14:09:55,508 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 14:09:55,508 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 14:09:55,508 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 14:09:55,508 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 14:09:55,509 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 14:09:55,509 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 14:09:55,509 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 14:09:55,510 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 14:09:55,510 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 14:09:55,510 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 14:09:55,511 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 14:09:55,511 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 14:09:55,511 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 14:09:55,511 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 14:09:55,511 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 14:09:55,512 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 14:09:55,513 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 14:09:55,514 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 14:09:55,514 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 14:09:55,514 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 14:09:55,514 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 14:09:55,514 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 14:09:55,515 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 14:09:55,515 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 14:09:55,515 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 14:09:55,515 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 14:09:55,516 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 14:09:55,516 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 14:09:55,516 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 14:09:55,516 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 14:09:55,516 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 14:09:55,517 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 14:09:55,569 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 14:09:55,582 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 14:09:55,586 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 14:09:55,587 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 14:09:55,588 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 14:09:55,588 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label49_true-unreach-call.c [2018-10-27 14:09:55,642 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/303153909/f76f6c32b3444250a6feb83eaecda768/FLAG045906b00 [2018-10-27 14:09:56,482 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 14:09:56,483 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label49_true-unreach-call.c [2018-10-27 14:09:56,514 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/303153909/f76f6c32b3444250a6feb83eaecda768/FLAG045906b00 [2018-10-27 14:09:56,532 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/303153909/f76f6c32b3444250a6feb83eaecda768 [2018-10-27 14:09:56,544 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 14:09:56,546 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 14:09:56,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 14:09:56,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 14:09:56,552 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 14:09:56,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:09:56" (1/1) ... [2018-10-27 14:09:56,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d9de6d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:09:56, skipping insertion in model container [2018-10-27 14:09:56,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:09:56" (1/1) ... [2018-10-27 14:09:56,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 14:09:56,753 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 14:09:58,135 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:09:58,140 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 14:09:58,747 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:09:58,777 INFO L193 MainTranslator]: Completed translation [2018-10-27 14:09:58,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:09:58 WrapperNode [2018-10-27 14:09:58,778 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 14:09:58,779 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 14:09:58,779 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 14:09:58,780 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 14:09:58,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:09:58" (1/1) ... [2018-10-27 14:09:58,848 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:09:58" (1/1) ... [2018-10-27 14:09:59,270 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 14:09:59,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 14:09:59,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 14:09:59,271 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 14:09:59,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:09:58" (1/1) ... [2018-10-27 14:09:59,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:09:58" (1/1) ... [2018-10-27 14:09:59,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:09:58" (1/1) ... [2018-10-27 14:09:59,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:09:58" (1/1) ... [2018-10-27 14:09:59,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:09:58" (1/1) ... [2018-10-27 14:09:59,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:09:58" (1/1) ... [2018-10-27 14:09:59,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:09:58" (1/1) ... [2018-10-27 14:09:59,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 14:09:59,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 14:09:59,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 14:09:59,546 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 14:09:59,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:09:58" (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 14:09:59,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 14:09:59,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 14:09:59,627 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 14:09:59,627 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 14:09:59,627 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 14:09:59,628 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 14:09:59,628 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 14:09:59,628 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 14:09:59,628 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 14:09:59,629 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 14:09:59,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 14:09:59,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 14:09:59,629 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 14:09:59,630 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 14:10:13,846 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 14:10:13,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:10:13 BoogieIcfgContainer [2018-10-27 14:10:13,847 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 14:10:13,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 14:10:13,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 14:10:13,851 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 14:10:13,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:09:56" (1/3) ... [2018-10-27 14:10:13,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b469c69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:10:13, skipping insertion in model container [2018-10-27 14:10:13,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:09:58" (2/3) ... [2018-10-27 14:10:13,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b469c69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:10:13, skipping insertion in model container [2018-10-27 14:10:13,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:10:13" (3/3) ... [2018-10-27 14:10:13,855 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label49_true-unreach-call.c [2018-10-27 14:10:13,865 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 14:10:13,875 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 14:10:13,894 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 14:10:13,940 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 14:10:13,940 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 14:10:13,940 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 14:10:13,940 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 14:10:13,941 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 14:10:13,941 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 14:10:13,941 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 14:10:13,941 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 14:10:13,980 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-27 14:10:13,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-27 14:10:13,989 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:10:13,990 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:10:13,992 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:10:13,999 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:10:13,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1466253757, now seen corresponding path program 1 times [2018-10-27 14:10:14,002 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:10:14,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:10:14,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:10:14,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:10:14,062 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:10:14,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:10:14,501 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 14:10:14,614 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 14:10:14,616 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:10:14,617 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 14:10:14,617 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:10:14,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 14:10:14,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 14:10:14,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 14:10:14,643 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-27 14:10:22,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:10:22,403 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-27 14:10:22,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 14:10:22,404 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2018-10-27 14:10:22,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:10:22,441 INFO L225 Difference]: With dead ends: 2446 [2018-10-27 14:10:22,441 INFO L226 Difference]: Without dead ends: 1604 [2018-10-27 14:10:22,453 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 14:10:22,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-27 14:10:22,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-27 14:10:22,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-27 14:10:22,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 3021 transitions. [2018-10-27 14:10:22,636 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 3021 transitions. Word has length 49 [2018-10-27 14:10:22,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:10:22,637 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 3021 transitions. [2018-10-27 14:10:22,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 14:10:22,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 3021 transitions. [2018-10-27 14:10:22,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-27 14:10:22,645 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:10:22,646 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:10:22,646 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:10:22,646 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:10:22,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1490932028, now seen corresponding path program 1 times [2018-10-27 14:10:22,647 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:10:22,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:10:22,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:10:22,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:10:22,649 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:10:22,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:10:23,021 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:10:23,021 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:10:23,022 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 14:10:23,022 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:10:23,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:10:23,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:10:23,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:10:23,025 INFO L87 Difference]: Start difference. First operand 1604 states and 3021 transitions. Second operand 6 states. [2018-10-27 14:10:38,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:10:38,052 INFO L93 Difference]: Finished difference Result 6330 states and 12128 transitions. [2018-10-27 14:10:38,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 14:10:38,052 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-10-27 14:10:38,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:10:38,082 INFO L225 Difference]: With dead ends: 6330 [2018-10-27 14:10:38,082 INFO L226 Difference]: Without dead ends: 4732 [2018-10-27 14:10:38,093 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 14:10:38,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4732 states. [2018-10-27 14:10:38,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4732 to 4700. [2018-10-27 14:10:38,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4700 states. [2018-10-27 14:10:38,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4700 states to 4700 states and 7674 transitions. [2018-10-27 14:10:38,239 INFO L78 Accepts]: Start accepts. Automaton has 4700 states and 7674 transitions. Word has length 127 [2018-10-27 14:10:38,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:10:38,239 INFO L481 AbstractCegarLoop]: Abstraction has 4700 states and 7674 transitions. [2018-10-27 14:10:38,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 14:10:38,240 INFO L276 IsEmpty]: Start isEmpty. Operand 4700 states and 7674 transitions. [2018-10-27 14:10:38,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-27 14:10:38,244 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:10:38,245 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:10:38,245 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:10:38,245 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:10:38,245 INFO L82 PathProgramCache]: Analyzing trace with hash -729393447, now seen corresponding path program 1 times [2018-10-27 14:10:38,246 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:10:38,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:10:38,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:10:38,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:10:38,247 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:10:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:10:38,441 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:10:38,442 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:10:38,442 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 14:10:38,442 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:10:38,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 14:10:38,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 14:10:38,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-27 14:10:38,444 INFO L87 Difference]: Start difference. First operand 4700 states and 7674 transitions. Second operand 5 states. [2018-10-27 14:10:47,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:10:47,961 INFO L93 Difference]: Finished difference Result 14300 states and 23670 transitions. [2018-10-27 14:10:47,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 14:10:47,962 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2018-10-27 14:10:47,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:10:48,019 INFO L225 Difference]: With dead ends: 14300 [2018-10-27 14:10:48,019 INFO L226 Difference]: Without dead ends: 9606 [2018-10-27 14:10:48,036 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:10:48,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9606 states. [2018-10-27 14:10:48,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9606 to 9524. [2018-10-27 14:10:48,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9524 states. [2018-10-27 14:10:48,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9524 states to 9524 states and 14353 transitions. [2018-10-27 14:10:48,328 INFO L78 Accepts]: Start accepts. Automaton has 9524 states and 14353 transitions. Word has length 130 [2018-10-27 14:10:48,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:10:48,329 INFO L481 AbstractCegarLoop]: Abstraction has 9524 states and 14353 transitions. [2018-10-27 14:10:48,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 14:10:48,329 INFO L276 IsEmpty]: Start isEmpty. Operand 9524 states and 14353 transitions. [2018-10-27 14:10:48,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-27 14:10:48,332 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:10:48,333 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:10:48,333 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:10:48,333 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:10:48,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1452508056, now seen corresponding path program 1 times [2018-10-27 14:10:48,334 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:10:48,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:10:48,335 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:10:48,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:10:48,335 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:10:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:10:48,585 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:10:48,585 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:10:48,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 14:10:48,586 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:10:48,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:10:48,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:10:48,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:10:48,587 INFO L87 Difference]: Start difference. First operand 9524 states and 14353 transitions. Second operand 6 states. [2018-10-27 14:11:10,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:11:10,792 INFO L93 Difference]: Finished difference Result 38624 states and 63937 transitions. [2018-10-27 14:11:10,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 14:11:10,794 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2018-10-27 14:11:10,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:11:10,968 INFO L225 Difference]: With dead ends: 38624 [2018-10-27 14:11:10,968 INFO L226 Difference]: Without dead ends: 29106 [2018-10-27 14:11:11,064 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 14:11:11,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29106 states. [2018-10-27 14:11:11,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29106 to 28908. [2018-10-27 14:11:11,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28908 states. [2018-10-27 14:11:11,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28908 states to 28908 states and 42526 transitions. [2018-10-27 14:11:11,926 INFO L78 Accepts]: Start accepts. Automaton has 28908 states and 42526 transitions. Word has length 153 [2018-10-27 14:11:11,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:11:11,927 INFO L481 AbstractCegarLoop]: Abstraction has 28908 states and 42526 transitions. [2018-10-27 14:11:11,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 14:11:11,927 INFO L276 IsEmpty]: Start isEmpty. Operand 28908 states and 42526 transitions. [2018-10-27 14:11:11,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-27 14:11:11,930 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:11:11,930 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:11:11,931 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:11:11,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:11:11,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1417457295, now seen corresponding path program 1 times [2018-10-27 14:11:11,931 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:11:11,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:11:11,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:11:11,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:11:11,933 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:11:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:11:12,217 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 14:11:12,641 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:11:12,641 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:11:12,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 14:11:12,641 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:11:12,642 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:11:12,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:11:12,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:11:12,645 INFO L87 Difference]: Start difference. First operand 28908 states and 42526 transitions. Second operand 6 states. [2018-10-27 14:11:25,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:11:25,675 INFO L93 Difference]: Finished difference Result 77329 states and 121247 transitions. [2018-10-27 14:11:25,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 14:11:25,678 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2018-10-27 14:11:25,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:11:25,898 INFO L225 Difference]: With dead ends: 77329 [2018-10-27 14:11:25,898 INFO L226 Difference]: Without dead ends: 48427 [2018-10-27 14:11:26,005 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 14:11:26,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48427 states. [2018-10-27 14:11:27,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48427 to 48216. [2018-10-27 14:11:27,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48216 states. [2018-10-27 14:11:27,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48216 states to 48216 states and 68416 transitions. [2018-10-27 14:11:27,521 INFO L78 Accepts]: Start accepts. Automaton has 48216 states and 68416 transitions. Word has length 174 [2018-10-27 14:11:27,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:11:27,521 INFO L481 AbstractCegarLoop]: Abstraction has 48216 states and 68416 transitions. [2018-10-27 14:11:27,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 14:11:27,522 INFO L276 IsEmpty]: Start isEmpty. Operand 48216 states and 68416 transitions. [2018-10-27 14:11:27,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-10-27 14:11:27,532 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:11:27,532 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:11:27,533 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:11:27,533 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:11:27,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1734956816, now seen corresponding path program 1 times [2018-10-27 14:11:27,533 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:11:27,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:11:27,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:11:27,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:11:27,535 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:11:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:11:27,803 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 14:11:28,074 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 84 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 14:11:28,075 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 14:11:28,075 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 14:11:28,076 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 245 with the following transitions: [2018-10-27 14:11:28,078 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2159], [2161], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2404], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2536], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-27 14:11:28,153 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 14:11:28,153 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 14:11:28,907 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 14:11:32,429 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 14:11:32,431 INFO L272 AbstractInterpreter]: Visited 119 different actions 119 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-27 14:11:32,448 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:11:32,448 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 14:11:35,856 INFO L227 lantSequenceWeakener]: Weakened 235 states. On average, predicates are now at 75.52% of their original sizes. [2018-10-27 14:11:35,857 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 14:11:36,192 INFO L415 sIntCurrentIteration]: We unified 243 AI predicates to 243 [2018-10-27 14:11:36,192 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 14:11:36,193 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 14:11:36,193 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-27 14:11:36,193 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:11:36,194 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 14:11:36,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 14:11:36,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 14:11:36,194 INFO L87 Difference]: Start difference. First operand 48216 states and 68416 transitions. Second operand 7 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown