java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label45_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:25:44,404 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:25:44,409 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:25:44,426 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:25:44,427 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:25:44,428 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:25:44,429 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:25:44,431 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:25:44,433 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:25:44,433 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:25:44,434 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:25:44,435 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:25:44,436 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:25:44,437 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:25:44,438 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:25:44,439 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:25:44,440 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:25:44,442 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:25:44,444 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:25:44,445 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:25:44,446 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:25:44,448 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:25:44,453 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:25:44,454 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:25:44,454 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:25:44,455 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:25:44,458 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:25:44,459 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:25:44,459 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:25:44,460 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:25:44,461 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:25:44,461 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:25:44,462 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:25:44,462 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:25:44,463 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:25:44,464 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:25:44,464 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 16:25:44,481 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:25:44,482 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:25:44,483 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:25:44,483 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:25:44,483 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:25:44,483 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:25:44,483 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:25:44,484 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:25:44,484 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:25:44,484 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:25:44,484 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:25:44,484 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:25:44,485 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:25:44,485 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:25:44,486 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:25:44,486 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:25:44,486 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:25:44,486 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:25:44,486 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:25:44,486 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:25:44,487 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:25:44,487 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:25:44,487 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:25:44,487 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:25:44,487 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:25:44,488 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:25:44,488 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:25:44,488 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:25:44,488 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:25:44,488 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:25:44,489 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:25:44,489 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:25:44,489 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:25:44,489 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:25:44,489 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:25:44,535 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:25:44,553 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:25:44,556 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:25:44,558 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:25:44,558 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:25:44,559 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label45_false-unreach-call.c [2018-11-12 16:25:44,626 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5f206b15/ac39c63f39dd4b629a1afd136c91ac7a/FLAGc6f18891d [2018-11-12 16:25:45,433 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:25:45,434 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label45_false-unreach-call.c [2018-11-12 16:25:45,476 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5f206b15/ac39c63f39dd4b629a1afd136c91ac7a/FLAGc6f18891d [2018-11-12 16:25:45,498 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5f206b15/ac39c63f39dd4b629a1afd136c91ac7a [2018-11-12 16:25:45,510 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:25:45,513 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:25:45,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:25:45,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:25:45,519 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:25:45,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:25:45" (1/1) ... [2018-11-12 16:25:45,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4158d789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:25:45, skipping insertion in model container [2018-11-12 16:25:45,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:25:45" (1/1) ... [2018-11-12 16:25:45,536 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:25:45,726 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:25:47,251 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:25:47,256 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:25:48,069 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:25:48,109 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:25:48,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:25:48 WrapperNode [2018-11-12 16:25:48,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:25:48,111 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:25:48,112 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:25:48,112 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:25:48,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:25:48" (1/1) ... [2018-11-12 16:25:48,693 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:25:48" (1/1) ... [2018-11-12 16:25:48,704 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:25:48,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:25:48,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:25:48,706 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:25:48,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:25:48" (1/1) ... [2018-11-12 16:25:48,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:25:48" (1/1) ... [2018-11-12 16:25:48,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:25:48" (1/1) ... [2018-11-12 16:25:48,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:25:48" (1/1) ... [2018-11-12 16:25:48,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:25:48" (1/1) ... [2018-11-12 16:25:48,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:25:48" (1/1) ... [2018-11-12 16:25:48,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:25:48" (1/1) ... [2018-11-12 16:25:49,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:25:49,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:25:49,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:25:49,006 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:25:49,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:25:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:25:49,083 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:25:49,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:25:49,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:25:49,084 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-12 16:25:49,084 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-12 16:25:49,085 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 16:25:49,085 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 16:25:49,085 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:25:49,085 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:25:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:25:49,086 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:25:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:25:49,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:25:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:25:49,088 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:26:00,560 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:26:00,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:26:00 BoogieIcfgContainer [2018-11-12 16:26:00,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:26:00,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:26:00,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:26:00,565 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:26:00,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:25:45" (1/3) ... [2018-11-12 16:26:00,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4289ec43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:26:00, skipping insertion in model container [2018-11-12 16:26:00,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:25:48" (2/3) ... [2018-11-12 16:26:00,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4289ec43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:26:00, skipping insertion in model container [2018-11-12 16:26:00,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:26:00" (3/3) ... [2018-11-12 16:26:00,569 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label45_false-unreach-call.c [2018-11-12 16:26:00,579 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:26:00,590 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:26:00,608 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:26:00,655 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:26:00,655 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:26:00,656 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:26:00,656 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:26:00,656 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:26:00,656 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:26:00,656 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:26:00,656 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:26:00,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-12 16:26:00,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-12 16:26:00,707 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:26:00,708 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:26:00,711 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:26:00,717 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:26:00,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1438906236, now seen corresponding path program 1 times [2018-11-12 16:26:00,720 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:26:00,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:26:00,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:26:00,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:26:00,778 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:26:00,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:26:01,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:26:01,100 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:26:01,100 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:26:01,101 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:26:01,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:26:01,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:26:01,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:26:01,153 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-11-12 16:26:15,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:26:15,215 INFO L93 Difference]: Finished difference Result 4063 states and 7611 transitions. [2018-11-12 16:26:15,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:26:15,217 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-11-12 16:26:15,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:26:15,259 INFO L225 Difference]: With dead ends: 4063 [2018-11-12 16:26:15,260 INFO L226 Difference]: Without dead ends: 2937 [2018-11-12 16:26:15,272 INFO L604 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 [2018-11-12 16:26:15,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2018-11-12 16:26:15,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1982. [2018-11-12 16:26:15,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1982 states. [2018-11-12 16:26:15,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1982 states to 1982 states and 3456 transitions. [2018-11-12 16:26:15,446 INFO L78 Accepts]: Start accepts. Automaton has 1982 states and 3456 transitions. Word has length 14 [2018-11-12 16:26:15,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:26:15,448 INFO L480 AbstractCegarLoop]: Abstraction has 1982 states and 3456 transitions. [2018-11-12 16:26:15,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:26:15,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1982 states and 3456 transitions. [2018-11-12 16:26:15,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-11-12 16:26:15,455 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:26:15,455 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:26:15,456 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:26:15,456 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:26:15,457 INFO L82 PathProgramCache]: Analyzing trace with hash 78818025, now seen corresponding path program 1 times [2018-11-12 16:26:15,457 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:26:15,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:26:15,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:26:15,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:26:15,460 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:26:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:26:15,981 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:26:15,981 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:26:15,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:26:15,981 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:26:15,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:26:15,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:26:15,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:26:15,984 INFO L87 Difference]: Start difference. First operand 1982 states and 3456 transitions. Second operand 6 states. [2018-11-12 16:26:30,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:26:30,937 INFO L93 Difference]: Finished difference Result 7277 states and 13063 transitions. [2018-11-12 16:26:30,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:26:30,941 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2018-11-12 16:26:30,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:26:30,980 INFO L225 Difference]: With dead ends: 7277 [2018-11-12 16:26:30,981 INFO L226 Difference]: Without dead ends: 5301 [2018-11-12 16:26:30,993 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:26:30,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5301 states. [2018-11-12 16:26:31,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5301 to 5252. [2018-11-12 16:26:31,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5252 states. [2018-11-12 16:26:31,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5252 states to 5252 states and 8253 transitions. [2018-11-12 16:26:31,243 INFO L78 Accepts]: Start accepts. Automaton has 5252 states and 8253 transitions. Word has length 85 [2018-11-12 16:26:31,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:26:31,243 INFO L480 AbstractCegarLoop]: Abstraction has 5252 states and 8253 transitions. [2018-11-12 16:26:31,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:26:31,244 INFO L276 IsEmpty]: Start isEmpty. Operand 5252 states and 8253 transitions. [2018-11-12 16:26:31,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-11-12 16:26:31,247 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:26:31,247 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:26:31,248 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:26:31,248 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:26:31,248 INFO L82 PathProgramCache]: Analyzing trace with hash 418123736, now seen corresponding path program 1 times [2018-11-12 16:26:31,248 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:26:31,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:26:31,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:26:31,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:26:31,250 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:26:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:26:31,448 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:26:31,448 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:26:31,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:26:31,448 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:26:31,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:26:31,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:26:31,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:26:31,450 INFO L87 Difference]: Start difference. First operand 5252 states and 8253 transitions. Second operand 6 states. [2018-11-12 16:26:42,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:26:42,413 INFO L93 Difference]: Finished difference Result 13914 states and 22498 transitions. [2018-11-12 16:26:42,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:26:42,414 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2018-11-12 16:26:42,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:26:42,462 INFO L225 Difference]: With dead ends: 13914 [2018-11-12 16:26:42,462 INFO L226 Difference]: Without dead ends: 8668 [2018-11-12 16:26:42,485 INFO L604 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 [2018-11-12 16:26:42,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8668 states. [2018-11-12 16:26:42,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8668 to 8605. [2018-11-12 16:26:42,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8605 states. [2018-11-12 16:26:42,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8605 states to 8605 states and 12803 transitions. [2018-11-12 16:26:42,727 INFO L78 Accepts]: Start accepts. Automaton has 8605 states and 12803 transitions. Word has length 88 [2018-11-12 16:26:42,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:26:42,729 INFO L480 AbstractCegarLoop]: Abstraction has 8605 states and 12803 transitions. [2018-11-12 16:26:42,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:26:42,730 INFO L276 IsEmpty]: Start isEmpty. Operand 8605 states and 12803 transitions. [2018-11-12 16:26:42,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-11-12 16:26:42,734 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:26:42,734 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:26:42,741 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:26:42,741 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:26:42,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1382541628, now seen corresponding path program 1 times [2018-11-12 16:26:42,742 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:26:42,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:26:42,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:26:42,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:26:42,743 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:26:42,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:26:43,065 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:26:43,065 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:26:43,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 16:26:43,066 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:26:43,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 16:26:43,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 16:26:43,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 16:26:43,068 INFO L87 Difference]: Start difference. First operand 8605 states and 12803 transitions. Second operand 5 states. [2018-11-12 16:26:55,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:26:55,553 INFO L93 Difference]: Finished difference Result 25970 states and 40304 transitions. [2018-11-12 16:26:55,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 16:26:55,554 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2018-11-12 16:26:55,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:26:55,627 INFO L225 Difference]: With dead ends: 25970 [2018-11-12 16:26:55,627 INFO L226 Difference]: Without dead ends: 17371 [2018-11-12 16:26:55,655 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:26:55,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17371 states. [2018-11-12 16:26:56,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17371 to 17106. [2018-11-12 16:26:56,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17106 states. [2018-11-12 16:26:56,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17106 states to 17106 states and 24299 transitions. [2018-11-12 16:26:56,103 INFO L78 Accepts]: Start accepts. Automaton has 17106 states and 24299 transitions. Word has length 98 [2018-11-12 16:26:56,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:26:56,104 INFO L480 AbstractCegarLoop]: Abstraction has 17106 states and 24299 transitions. [2018-11-12 16:26:56,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 16:26:56,104 INFO L276 IsEmpty]: Start isEmpty. Operand 17106 states and 24299 transitions. [2018-11-12 16:26:56,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-11-12 16:26:56,114 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:26:56,115 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:26:56,115 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:26:56,115 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:26:56,115 INFO L82 PathProgramCache]: Analyzing trace with hash -916894984, now seen corresponding path program 1 times [2018-11-12 16:26:56,116 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:26:56,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:26:56,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:26:56,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:26:56,117 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:26:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:26:56,280 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:26:56,281 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:26:56,281 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:26:56,281 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:26:56,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:26:56,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:26:56,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:26:56,285 INFO L87 Difference]: Start difference. First operand 17106 states and 24299 transitions. Second operand 3 states. [2018-11-12 16:27:02,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:27:02,438 INFO L93 Difference]: Finished difference Result 47319 states and 70877 transitions. [2018-11-12 16:27:02,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:27:02,440 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 115 [2018-11-12 16:27:02,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:27:02,859 INFO L225 Difference]: With dead ends: 47319 [2018-11-12 16:27:02,859 INFO L226 Difference]: Without dead ends: 30219 [2018-11-12 16:27:02,917 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:27:02,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30219 states. [2018-11-12 16:27:03,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30219 to 30217. [2018-11-12 16:27:03,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30217 states. [2018-11-12 16:27:03,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30217 states to 30217 states and 42628 transitions. [2018-11-12 16:27:03,515 INFO L78 Accepts]: Start accepts. Automaton has 30217 states and 42628 transitions. Word has length 115 [2018-11-12 16:27:03,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:27:03,515 INFO L480 AbstractCegarLoop]: Abstraction has 30217 states and 42628 transitions. [2018-11-12 16:27:03,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:27:03,516 INFO L276 IsEmpty]: Start isEmpty. Operand 30217 states and 42628 transitions. [2018-11-12 16:27:03,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-11-12 16:27:03,519 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:27:03,519 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:27:03,520 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:27:03,520 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:27:03,520 INFO L82 PathProgramCache]: Analyzing trace with hash 196829947, now seen corresponding path program 1 times [2018-11-12 16:27:03,520 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:27:03,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:27:03,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:27:03,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:27:03,521 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:27:03,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:27:04,019 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:27:04,019 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:27:04,019 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:27:04,019 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:27:04,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:27:04,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:27:04,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:27:04,021 INFO L87 Difference]: Start difference. First operand 30217 states and 42628 transitions. Second operand 6 states. [2018-11-12 16:27:17,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:27:17,821 INFO L93 Difference]: Finished difference Result 98391 states and 150457 transitions. [2018-11-12 16:27:17,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:27:17,824 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2018-11-12 16:27:17,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:27:18,095 INFO L225 Difference]: With dead ends: 98391 [2018-11-12 16:27:18,095 INFO L226 Difference]: Without dead ends: 68180 [2018-11-12 16:27:18,246 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-12 16:27:18,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68180 states. [2018-11-12 16:27:19,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68180 to 68111. [2018-11-12 16:27:19,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68111 states. [2018-11-12 16:27:19,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68111 states to 68111 states and 98393 transitions. [2018-11-12 16:27:19,703 INFO L78 Accepts]: Start accepts. Automaton has 68111 states and 98393 transitions. Word has length 156 [2018-11-12 16:27:19,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:27:19,704 INFO L480 AbstractCegarLoop]: Abstraction has 68111 states and 98393 transitions. [2018-11-12 16:27:19,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:27:19,704 INFO L276 IsEmpty]: Start isEmpty. Operand 68111 states and 98393 transitions. [2018-11-12 16:27:19,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-11-12 16:27:19,709 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:27:19,710 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:27:19,710 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:27:19,710 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:27:19,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1968456128, now seen corresponding path program 1 times [2018-11-12 16:27:19,711 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:27:19,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:27:19,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:27:19,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:27:19,712 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:27:19,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:27:19,890 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-11-12 16:27:19,891 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:27:19,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:27:19,891 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:27:19,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:27:19,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:27:19,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:27:19,893 INFO L87 Difference]: Start difference. First operand 68111 states and 98393 transitions. Second operand 3 states. [2018-11-12 16:27:26,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:27:26,859 INFO L93 Difference]: Finished difference Result 136224 states and 197803 transitions. [2018-11-12 16:27:26,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:27:26,859 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 216 [2018-11-12 16:27:26,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:27:27,079 INFO L225 Difference]: With dead ends: 136224 [2018-11-12 16:27:27,080 INFO L226 Difference]: Without dead ends: 68119 [2018-11-12 16:27:27,254 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:27:27,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68119 states. [2018-11-12 16:27:29,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68119 to 68114. [2018-11-12 16:27:29,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68114 states. [2018-11-12 16:27:29,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68114 states to 68114 states and 92546 transitions. [2018-11-12 16:27:29,446 INFO L78 Accepts]: Start accepts. Automaton has 68114 states and 92546 transitions. Word has length 216 [2018-11-12 16:27:29,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:27:29,447 INFO L480 AbstractCegarLoop]: Abstraction has 68114 states and 92546 transitions. [2018-11-12 16:27:29,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:27:29,448 INFO L276 IsEmpty]: Start isEmpty. Operand 68114 states and 92546 transitions. [2018-11-12 16:27:29,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-11-12 16:27:29,456 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:27:29,456 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:27:29,456 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:27:29,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:27:29,457 INFO L82 PathProgramCache]: Analyzing trace with hash -967021314, now seen corresponding path program 1 times [2018-11-12 16:27:29,457 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:27:29,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:27:29,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:27:29,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:27:29,458 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:27:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:27:29,832 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:27:30,065 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:27:30,066 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:27:30,066 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:27:30,066 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:27:30,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:27:30,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:27:30,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:27:30,067 INFO L87 Difference]: Start difference. First operand 68114 states and 92546 transitions. Second operand 6 states. [2018-11-12 16:27:38,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:27:38,794 INFO L93 Difference]: Finished difference Result 177120 states and 267442 transitions. [2018-11-12 16:27:38,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:27:38,794 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 224 [2018-11-12 16:27:38,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:27:40,044 INFO L225 Difference]: With dead ends: 177120 [2018-11-12 16:27:40,045 INFO L226 Difference]: Without dead ends: 109012 [2018-11-12 16:27:40,168 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:27:40,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109012 states. [2018-11-12 16:27:41,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109012 to 108677. [2018-11-12 16:27:41,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108677 states. [2018-11-12 16:27:42,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108677 states to 108677 states and 149223 transitions. [2018-11-12 16:27:42,209 INFO L78 Accepts]: Start accepts. Automaton has 108677 states and 149223 transitions. Word has length 224 [2018-11-12 16:27:42,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:27:42,210 INFO L480 AbstractCegarLoop]: Abstraction has 108677 states and 149223 transitions. [2018-11-12 16:27:42,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:27:42,210 INFO L276 IsEmpty]: Start isEmpty. Operand 108677 states and 149223 transitions. [2018-11-12 16:27:42,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-11-12 16:27:42,222 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:27:42,222 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:27:42,222 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:27:42,223 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:27:42,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1811019067, now seen corresponding path program 1 times [2018-11-12 16:27:42,223 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:27:42,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:27:42,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:27:42,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:27:42,224 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:27:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:27:42,527 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 6 [2018-11-12 16:27:42,565 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-11-12 16:27:42,566 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:27:42,566 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:27:42,567 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 249 with the following transitions: [2018-11-12 16:27:42,577 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2639], [2641], [2644], [2652], [2660], [2668], [2676], [2684], [2692], [2700], [2708], [2716], [2724], [2732], [2740], [2748], [2756], [2764], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [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], [3309], [3313], [3317], [3320], [3321], [3325], [3329], [3333], [3344], [3355], [3358], [3361], [3365], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-12 16:27:42,655 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:27:42,655 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:27:43,643 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:27:43,645 INFO L272 AbstractInterpreter]: Visited 124 different actions 124 times. Never merged. Never widened. Performed 2836 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2836 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 26 variables. [2018-11-12 16:27:43,688 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:27:43,688 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:27:45,696 INFO L227 lantSequenceWeakener]: Weakened 224 states. On average, predicates are now at 70.85% of their original sizes. [2018-11-12 16:27:45,697 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:27:46,095 INFO L415 sIntCurrentIteration]: We unified 247 AI predicates to 247 [2018-11-12 16:27:46,096 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:27:46,096 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:27:46,097 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [3] total 12 [2018-11-12 16:27:46,097 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:27:46,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 16:27:46,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 16:27:46,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-12 16:27:46,098 INFO L87 Difference]: Start difference. First operand 108677 states and 149223 transitions. Second operand 11 states. [2018-11-12 16:27:58,304 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:28:43,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:28:43,812 INFO L93 Difference]: Finished difference Result 218157 states and 299341 transitions. [2018-11-12 16:28:43,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-12 16:28:43,812 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 248 [2018-11-12 16:28:43,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:28:44,184 INFO L225 Difference]: With dead ends: 218157 [2018-11-12 16:28:44,184 INFO L226 Difference]: Without dead ends: 109486 [2018-11-12 16:28:44,352 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 252 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2018-11-12 16:28:44,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109486 states. [2018-11-12 16:28:46,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109486 to 109481. [2018-11-12 16:28:46,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109481 states. [2018-11-12 16:28:46,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109481 states to 109481 states and 150040 transitions. [2018-11-12 16:28:46,879 INFO L78 Accepts]: Start accepts. Automaton has 109481 states and 150040 transitions. Word has length 248 [2018-11-12 16:28:46,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:28:46,880 INFO L480 AbstractCegarLoop]: Abstraction has 109481 states and 150040 transitions. [2018-11-12 16:28:46,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 16:28:46,880 INFO L276 IsEmpty]: Start isEmpty. Operand 109481 states and 150040 transitions. [2018-11-12 16:28:46,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-11-12 16:28:46,893 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:28:46,893 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 16:28:46,894 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:28:46,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:28:46,894 INFO L82 PathProgramCache]: Analyzing trace with hash -213808009, now seen corresponding path program 1 times [2018-11-12 16:28:46,894 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:28:46,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:28:46,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:28:46,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:28:46,903 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:28:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:28:47,376 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 111 proven. 75 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-12 16:28:47,376 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:28:47,377 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:28:47,377 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 279 with the following transitions: [2018-11-12 16:28:47,377 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2639], [2641], [2644], [2652], [2660], [2668], [2676], [2684], [2692], [2700], [2708], [2716], [2724], [2732], [2740], [2748], [2756], [2764], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3151], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3202], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3265], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-12 16:28:47,382 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:28:47,382 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:28:48,225 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:28:48,225 INFO L272 AbstractInterpreter]: Visited 110 different actions 317 times. Merged at 5 different actions 9 times. Never widened. Performed 5687 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5687 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 16:28:48,263 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:28:48,264 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:28:49,316 INFO L227 lantSequenceWeakener]: Weakened 75 states. On average, predicates are now at 71.09% of their original sizes. [2018-11-12 16:28:49,317 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:28:52,809 INFO L415 sIntCurrentIteration]: We unified 277 AI predicates to 277 [2018-11-12 16:28:52,810 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:28:52,810 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:28:52,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-11-12 16:28:52,811 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:28:52,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-12 16:28:52,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-12 16:28:52,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-11-12 16:28:52,812 INFO L87 Difference]: Start difference. First operand 109481 states and 150040 transitions. Second operand 19 states. Received shutdown request... [2018-11-12 16:29:02,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-12 16:29:02,952 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:29:02,957 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:29:02,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:29:02 BoogieIcfgContainer [2018-11-12 16:29:02,957 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:29:02,958 INFO L168 Benchmark]: Toolchain (without parser) took 197446.78 ms. Allocated memory was 1.6 GB in the beginning and 5.6 GB in the end (delta: 4.1 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -871.0 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2018-11-12 16:29:02,959 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 16:29:02,960 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2596.64 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. [2018-11-12 16:29:02,961 INFO L168 Benchmark]: Boogie Procedure Inliner took 593.58 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 868.7 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. [2018-11-12 16:29:02,962 INFO L168 Benchmark]: Boogie Preprocessor took 299.93 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 37.8 MB). Peak memory consumption was 37.8 MB. Max. memory is 7.1 GB. [2018-11-12 16:29:02,962 INFO L168 Benchmark]: RCFGBuilder took 11555.42 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 145.2 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 25.0 MB). Peak memory consumption was 686.0 MB. Max. memory is 7.1 GB. [2018-11-12 16:29:02,963 INFO L168 Benchmark]: TraceAbstraction took 182395.47 ms. Allocated memory was 2.6 GB in the beginning and 5.6 GB in the end (delta: 3.1 GB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: -10.3 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-11-12 16:29:02,969 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2596.64 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 593.58 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 868.7 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 299.93 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 37.8 MB). Peak memory consumption was 37.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11555.42 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 145.2 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 25.0 MB). Peak memory consumption was 686.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 182395.47 ms. Allocated memory was 2.6 GB in the beginning and 5.6 GB in the end (delta: 3.1 GB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: -10.3 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 33]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 33). Cancelled while BasicCegarLoop was constructing difference of abstraction (109481states) and FLOYD_HOARE automaton (currently 15 states, 19 states before enhancement),while ReachableStatesComputation was computing reachable states (525 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 182.3s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 159.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6684 SDtfs, 27754 SDslu, 4131 SDs, 0 SdLazy, 44109 SolverSat, 11474 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 98.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 598 GetRequests, 468 SyntacticMatches, 55 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109481occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.0s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9973460082068609 AbsIntWeakeningRatio, 0.12022900763358779 AbsIntAvgWeakeningVarsNumRemoved, 6.587786259541985 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 9.9s AutomataMinimizationTime, 9 MinimizatonAttempts, 1748 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 1522 NumberOfCodeBlocks, 1522 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1512 ConstructedInterpolants, 0 QuantifiedInterpolants, 937213 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 460/537 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown