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/Problem13_label13_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 14:14:25,384 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 14:14:25,387 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 14:14:25,400 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 14:14:25,401 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 14:14:25,402 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 14:14:25,403 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 14:14:25,405 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 14:14:25,407 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 14:14:25,407 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 14:14:25,408 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 14:14:25,408 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 14:14:25,409 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 14:14:25,410 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 14:14:25,412 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 14:14:25,413 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 14:14:25,413 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 14:14:25,418 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 14:14:25,420 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 14:14:25,424 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 14:14:25,425 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 14:14:25,426 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 14:14:25,428 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 14:14:25,428 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 14:14:25,428 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 14:14:25,429 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 14:14:25,430 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 14:14:25,432 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 14:14:25,435 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 14:14:25,436 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 14:14:25,436 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 14:14:25,437 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 14:14:25,437 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 14:14:25,437 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 14:14:25,438 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 14:14:25,441 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 14:14:25,442 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 14:14:25,463 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 14:14:25,464 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 14:14:25,464 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 14:14:25,465 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 14:14:25,465 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 14:14:25,465 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 14:14:25,465 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 14:14:25,466 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 14:14:25,466 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 14:14:25,466 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 14:14:25,466 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 14:14:25,466 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 14:14:25,467 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 14:14:25,467 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 14:14:25,467 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 14:14:25,467 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 14:14:25,468 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 14:14:25,468 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 14:14:25,468 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 14:14:25,468 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 14:14:25,469 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 14:14:25,469 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 14:14:25,469 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 14:14:25,469 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 14:14:25,469 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 14:14:25,469 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 14:14:25,470 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 14:14:25,470 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 14:14:25,470 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 14:14:25,470 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 14:14:25,470 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 14:14:25,471 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 14:14:25,471 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 14:14:25,471 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 14:14:25,530 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 14:14:25,543 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 14:14:25,547 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 14:14:25,549 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 14:14:25,549 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 14:14:25,550 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label13_true-unreach-call.c [2018-10-27 14:14:25,612 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1d5f93674/12691fc81d98416cb25222b2c3b53c40/FLAGc1a517ae5 [2018-10-27 14:14:26,387 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 14:14:26,388 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label13_true-unreach-call.c [2018-10-27 14:14:26,422 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1d5f93674/12691fc81d98416cb25222b2c3b53c40/FLAGc1a517ae5 [2018-10-27 14:14:26,438 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1d5f93674/12691fc81d98416cb25222b2c3b53c40 [2018-10-27 14:14:26,450 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 14:14:26,451 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 14:14:26,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 14:14:26,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 14:14:26,457 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 14:14:26,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:14:26" (1/1) ... [2018-10-27 14:14:26,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73d4e6ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:14:26, skipping insertion in model container [2018-10-27 14:14:26,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:14:26" (1/1) ... [2018-10-27 14:14:26,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 14:14:26,665 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 14:14:28,210 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:14:28,215 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 14:14:29,007 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:14:29,042 INFO L193 MainTranslator]: Completed translation [2018-10-27 14:14:29,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:14:29 WrapperNode [2018-10-27 14:14:29,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 14:14:29,044 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 14:14:29,044 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 14:14:29,045 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 14:14:29,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:14:29" (1/1) ... [2018-10-27 14:14:29,135 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:14:29" (1/1) ... [2018-10-27 14:14:29,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 14:14:29,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 14:14:29,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 14:14:29,675 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 14:14:29,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:14:29" (1/1) ... [2018-10-27 14:14:29,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:14:29" (1/1) ... [2018-10-27 14:14:29,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:14:29" (1/1) ... [2018-10-27 14:14:29,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:14:29" (1/1) ... [2018-10-27 14:14:29,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:14:29" (1/1) ... [2018-10-27 14:14:29,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:14:29" (1/1) ... [2018-10-27 14:14:29,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:14:29" (1/1) ... [2018-10-27 14:14:30,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 14:14:30,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 14:14:30,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 14:14:30,011 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 14:14:30,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:14:29" (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 14:14:30,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 14:14:30,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 14:14:30,085 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 14:14:30,086 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 14:14:30,086 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 14:14:30,086 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 14:14:30,086 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 14:14:30,086 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 14:14:30,086 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 14:14:30,087 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 14:14:30,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 14:14:30,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 14:14:30,087 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 14:14:30,088 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 14:14:40,477 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 14:14:40,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:14:40 BoogieIcfgContainer [2018-10-27 14:14:40,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 14:14:40,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 14:14:40,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 14:14:40,483 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 14:14:40,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:14:26" (1/3) ... [2018-10-27 14:14:40,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30db5434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:14:40, skipping insertion in model container [2018-10-27 14:14:40,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:14:29" (2/3) ... [2018-10-27 14:14:40,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30db5434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:14:40, skipping insertion in model container [2018-10-27 14:14:40,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:14:40" (3/3) ... [2018-10-27 14:14:40,486 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label13_true-unreach-call.c [2018-10-27 14:14:40,497 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 14:14:40,508 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 14:14:40,526 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 14:14:40,575 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 14:14:40,576 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 14:14:40,576 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 14:14:40,576 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 14:14:40,576 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 14:14:40,576 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 14:14:40,576 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 14:14:40,576 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 14:14:40,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-27 14:14:40,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-27 14:14:40,634 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:14:40,635 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:14:40,637 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:14:40,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:14:40,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1465464788, now seen corresponding path program 1 times [2018-10-27 14:14:40,646 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:14:40,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:14:40,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:14:40,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:14:40,706 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:14:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:14:41,270 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 14:14:41,276 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:14:41,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 14:14:41,276 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:14:41,284 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 14:14:41,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 14:14:41,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:14:41,303 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-10-27 14:14:56,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:14:56,300 INFO L93 Difference]: Finished difference Result 4063 states and 7611 transitions. [2018-10-27 14:14:56,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 14:14:56,308 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2018-10-27 14:14:56,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:14:56,352 INFO L225 Difference]: With dead ends: 4063 [2018-10-27 14:14:56,352 INFO L226 Difference]: Without dead ends: 2937 [2018-10-27 14:14:56,366 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 14:14:56,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2018-10-27 14:14:56,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1982. [2018-10-27 14:14:56,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1982 states. [2018-10-27 14:14:56,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1982 states to 1982 states and 3456 transitions. [2018-10-27 14:14:56,564 INFO L78 Accepts]: Start accepts. Automaton has 1982 states and 3456 transitions. Word has length 64 [2018-10-27 14:14:56,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:14:56,565 INFO L481 AbstractCegarLoop]: Abstraction has 1982 states and 3456 transitions. [2018-10-27 14:14:56,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 14:14:56,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1982 states and 3456 transitions. [2018-10-27 14:14:56,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-27 14:14:56,574 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:14:56,574 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, 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] [2018-10-27 14:14:56,575 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:14:56,575 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:14:56,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1113995663, now seen corresponding path program 1 times [2018-10-27 14:14:56,575 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:14:56,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:14:56,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:14:56,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:14:56,577 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:14:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:14:56,894 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:14:56,894 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:14:56,895 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 14:14:56,895 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:14:56,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:14:56,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:14:56,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:14:56,898 INFO L87 Difference]: Start difference. First operand 1982 states and 3456 transitions. Second operand 6 states. [2018-10-27 14:15:12,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:15:12,758 INFO L93 Difference]: Finished difference Result 7277 states and 13063 transitions. [2018-10-27 14:15:12,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 14:15:12,762 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2018-10-27 14:15:12,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:15:12,928 INFO L225 Difference]: With dead ends: 7277 [2018-10-27 14:15:12,928 INFO L226 Difference]: Without dead ends: 5301 [2018-10-27 14:15:12,940 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 14:15:12,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5301 states. [2018-10-27 14:15:13,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5301 to 5252. [2018-10-27 14:15:13,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5252 states. [2018-10-27 14:15:13,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5252 states to 5252 states and 8253 transitions. [2018-10-27 14:15:13,090 INFO L78 Accepts]: Start accepts. Automaton has 5252 states and 8253 transitions. Word has length 135 [2018-10-27 14:15:13,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:15:13,091 INFO L481 AbstractCegarLoop]: Abstraction has 5252 states and 8253 transitions. [2018-10-27 14:15:13,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 14:15:13,091 INFO L276 IsEmpty]: Start isEmpty. Operand 5252 states and 8253 transitions. [2018-10-27 14:15:13,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-27 14:15:13,096 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:15:13,096 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, 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] [2018-10-27 14:15:13,097 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:15:13,097 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:15:13,097 INFO L82 PathProgramCache]: Analyzing trace with hash -303243424, now seen corresponding path program 1 times [2018-10-27 14:15:13,097 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:15:13,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:15:13,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:15:13,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:15:13,099 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:15:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:15:13,691 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:15:13,691 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:15:13,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 14:15:13,692 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:15:13,693 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:15:13,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:15:13,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:15:13,694 INFO L87 Difference]: Start difference. First operand 5252 states and 8253 transitions. Second operand 6 states. [2018-10-27 14:15:27,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:15:27,068 INFO L93 Difference]: Finished difference Result 13914 states and 22498 transitions. [2018-10-27 14:15:27,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 14:15:27,071 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2018-10-27 14:15:27,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:15:27,124 INFO L225 Difference]: With dead ends: 13914 [2018-10-27 14:15:27,124 INFO L226 Difference]: Without dead ends: 8668 [2018-10-27 14:15:27,147 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 14:15:27,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8668 states. [2018-10-27 14:15:27,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8668 to 8605. [2018-10-27 14:15:27,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8605 states. [2018-10-27 14:15:27,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8605 states to 8605 states and 12803 transitions. [2018-10-27 14:15:27,420 INFO L78 Accepts]: Start accepts. Automaton has 8605 states and 12803 transitions. Word has length 138 [2018-10-27 14:15:27,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:15:27,421 INFO L481 AbstractCegarLoop]: Abstraction has 8605 states and 12803 transitions. [2018-10-27 14:15:27,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 14:15:27,421 INFO L276 IsEmpty]: Start isEmpty. Operand 8605 states and 12803 transitions. [2018-10-27 14:15:27,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-27 14:15:27,427 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:15:27,427 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, 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] [2018-10-27 14:15:27,427 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:15:27,429 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:15:27,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1626850484, now seen corresponding path program 1 times [2018-10-27 14:15:27,429 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:15:27,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:15:27,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:15:27,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:15:27,431 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:15:27,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:15:27,658 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:15:27,659 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:15:27,659 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 14:15:27,659 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:15:27,660 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 14:15:27,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 14:15:27,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 14:15:27,661 INFO L87 Difference]: Start difference. First operand 8605 states and 12803 transitions. Second operand 5 states. [2018-10-27 14:15:40,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:15:40,990 INFO L93 Difference]: Finished difference Result 25982 states and 40339 transitions. [2018-10-27 14:15:40,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 14:15:40,991 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2018-10-27 14:15:40,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:15:41,077 INFO L225 Difference]: With dead ends: 25982 [2018-10-27 14:15:41,077 INFO L226 Difference]: Without dead ends: 17383 [2018-10-27 14:15:41,104 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 14:15:41,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17383 states. [2018-10-27 14:15:41,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17383 to 17120. [2018-10-27 14:15:41,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17120 states. [2018-10-27 14:15:41,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17120 states to 17120 states and 24327 transitions. [2018-10-27 14:15:41,555 INFO L78 Accepts]: Start accepts. Automaton has 17120 states and 24327 transitions. Word has length 148 [2018-10-27 14:15:41,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:15:41,555 INFO L481 AbstractCegarLoop]: Abstraction has 17120 states and 24327 transitions. [2018-10-27 14:15:41,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 14:15:41,556 INFO L276 IsEmpty]: Start isEmpty. Operand 17120 states and 24327 transitions. [2018-10-27 14:15:41,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-10-27 14:15:41,560 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:15:41,561 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, 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] [2018-10-27 14:15:41,561 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:15:41,561 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:15:41,561 INFO L82 PathProgramCache]: Analyzing trace with hash -2091389760, now seen corresponding path program 1 times [2018-10-27 14:15:41,562 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:15:41,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:15:41,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:15:41,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:15:41,566 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:15:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:15:41,835 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:15:41,835 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:15:41,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 14:15:41,835 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:15:41,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 14:15:41,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 14:15:41,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:15:41,837 INFO L87 Difference]: Start difference. First operand 17120 states and 24327 transitions. Second operand 4 states. [2018-10-27 14:15:54,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:15:54,084 INFO L93 Difference]: Finished difference Result 41061 states and 60639 transitions. [2018-10-27 14:15:54,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 14:15:54,090 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2018-10-27 14:15:54,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:15:54,181 INFO L225 Difference]: With dead ends: 41061 [2018-10-27 14:15:54,182 INFO L226 Difference]: Without dead ends: 23947 [2018-10-27 14:15:54,234 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 14:15:54,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23947 states. [2018-10-27 14:15:54,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23947 to 23901. [2018-10-27 14:15:54,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23901 states. [2018-10-27 14:15:54,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23901 states to 23901 states and 33757 transitions. [2018-10-27 14:15:54,773 INFO L78 Accepts]: Start accepts. Automaton has 23901 states and 33757 transitions. Word has length 165 [2018-10-27 14:15:54,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:15:54,773 INFO L481 AbstractCegarLoop]: Abstraction has 23901 states and 33757 transitions. [2018-10-27 14:15:54,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 14:15:54,774 INFO L276 IsEmpty]: Start isEmpty. Operand 23901 states and 33757 transitions. [2018-10-27 14:15:54,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-27 14:15:54,781 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:15:54,781 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, 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] [2018-10-27 14:15:54,781 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:15:54,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:15:54,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1502543096, now seen corresponding path program 1 times [2018-10-27 14:15:54,782 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:15:54,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:15:54,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:15:54,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:15:54,783 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:15:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:15:55,036 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 14:15:55,321 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:15:55,321 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:15:55,321 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 14:15:55,321 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:15:55,322 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:15:55,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:15:55,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:15:55,323 INFO L87 Difference]: Start difference. First operand 23901 states and 33757 transitions. Second operand 6 states. [2018-10-27 14:16:05,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:16:05,817 INFO L93 Difference]: Finished difference Result 65342 states and 103816 transitions. [2018-10-27 14:16:05,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 14:16:05,822 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2018-10-27 14:16:05,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:16:06,009 INFO L225 Difference]: With dead ends: 65342 [2018-10-27 14:16:06,009 INFO L226 Difference]: Without dead ends: 41447 [2018-10-27 14:16:06,096 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 14:16:06,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41447 states. [2018-10-27 14:16:06,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41447 to 41295. [2018-10-27 14:16:06,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41295 states. [2018-10-27 14:16:06,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41295 states to 41295 states and 60244 transitions. [2018-10-27 14:16:06,988 INFO L78 Accepts]: Start accepts. Automaton has 41295 states and 60244 transitions. Word has length 174 [2018-10-27 14:16:06,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:16:06,989 INFO L481 AbstractCegarLoop]: Abstraction has 41295 states and 60244 transitions. [2018-10-27 14:16:06,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 14:16:06,989 INFO L276 IsEmpty]: Start isEmpty. Operand 41295 states and 60244 transitions. [2018-10-27 14:16:07,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-27 14:16:07,001 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:16:07,002 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:16:07,002 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:16:07,002 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:16:07,003 INFO L82 PathProgramCache]: Analyzing trace with hash -621888907, now seen corresponding path program 1 times [2018-10-27 14:16:07,003 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:16:07,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:16:07,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:16:07,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:16:07,004 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:16:07,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:16:07,449 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:16:07,450 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:16:07,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 14:16:07,450 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:16:07,450 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:16:07,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:16:07,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:16:07,451 INFO L87 Difference]: Start difference. First operand 41295 states and 60244 transitions. Second operand 6 states. [2018-10-27 14:16:29,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:16:29,661 INFO L93 Difference]: Finished difference Result 138756 states and 237956 transitions. [2018-10-27 14:16:29,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 14:16:29,662 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 222 [2018-10-27 14:16:29,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:16:30,308 INFO L225 Difference]: With dead ends: 138756 [2018-10-27 14:16:30,309 INFO L226 Difference]: Without dead ends: 97467 [2018-10-27 14:16:30,544 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 14:16:30,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97467 states. [2018-10-27 14:16:33,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97467 to 96930. [2018-10-27 14:16:33,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96930 states. [2018-10-27 14:16:33,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96930 states to 96930 states and 141652 transitions. [2018-10-27 14:16:33,404 INFO L78 Accepts]: Start accepts. Automaton has 96930 states and 141652 transitions. Word has length 222 [2018-10-27 14:16:33,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:16:33,405 INFO L481 AbstractCegarLoop]: Abstraction has 96930 states and 141652 transitions. [2018-10-27 14:16:33,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 14:16:33,405 INFO L276 IsEmpty]: Start isEmpty. Operand 96930 states and 141652 transitions. [2018-10-27 14:16:33,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-10-27 14:16:33,436 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:16:33,436 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:16:33,436 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:16:33,436 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:16:33,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1548106794, now seen corresponding path program 1 times [2018-10-27 14:16:33,437 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:16:33,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:16:33,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:16:33,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:16:33,438 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:16:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:16:33,781 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 14:16:34,233 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 222 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:16:34,234 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 14:16:34,234 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 14:16:34,235 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 296 with the following transitions: [2018-10-27 14:16:34,237 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3039], [3041], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3308], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3358], [3361], [3365], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-27 14:16:34,288 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 14:16:34,289 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 14:16:35,129 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 14:16:35,131 INFO L272 AbstractInterpreter]: Visited 124 different actions 124 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-27 14:16:35,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:16:35,172 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 14:16:36,192 INFO L227 lantSequenceWeakener]: Weakened 271 states. On average, predicates are now at 71.62% of their original sizes. [2018-10-27 14:16:36,192 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 14:16:36,806 INFO L415 sIntCurrentIteration]: We unified 294 AI predicates to 294 [2018-10-27 14:16:36,806 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 14:16:36,807 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 14:16:36,807 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-10-27 14:16:36,807 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:16:36,808 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 14:16:36,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 14:16:36,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-10-27 14:16:36,809 INFO L87 Difference]: Start difference. First operand 96930 states and 141652 transitions. Second operand 10 states. [2018-10-27 14:16:43,981 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown