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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label06_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 04:12:42,355 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 04:12:42,357 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 04:12:42,373 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 04:12:42,373 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 04:12:42,374 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 04:12:42,376 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 04:12:42,379 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 04:12:42,381 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 04:12:42,388 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 04:12:42,389 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 04:12:42,389 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 04:12:42,393 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 04:12:42,394 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 04:12:42,395 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 04:12:42,400 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 04:12:42,401 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 04:12:42,403 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 04:12:42,408 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 04:12:42,411 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 04:12:42,414 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 04:12:42,418 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 04:12:42,420 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 04:12:42,420 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 04:12:42,420 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 04:12:42,424 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 04:12:42,425 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 04:12:42,429 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 04:12:42,430 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 04:12:42,432 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 04:12:42,432 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 04:12:42,433 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 04:12:42,433 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 04:12:42,434 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 04:12:42,434 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 04:12:42,437 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 04:12:42,437 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 04:12:42,466 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 04:12:42,469 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 04:12:42,470 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 04:12:42,470 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 04:12:42,471 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 04:12:42,471 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 04:12:42,471 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 04:12:42,471 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 04:12:42,471 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 04:12:42,472 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 04:12:42,472 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 04:12:42,472 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 04:12:42,474 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 04:12:42,474 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 04:12:42,474 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 04:12:42,474 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 04:12:42,474 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 04:12:42,475 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 04:12:42,475 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 04:12:42,475 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 04:12:42,475 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 04:12:42,475 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 04:12:42,477 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 04:12:42,477 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 04:12:42,477 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 04:12:42,477 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 04:12:42,477 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 04:12:42,478 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 04:12:42,478 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 04:12:42,478 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 04:12:42,478 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 04:12:42,478 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 04:12:42,479 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 04:12:42,479 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 04:12:42,531 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 04:12:42,551 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 04:12:42,555 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 04:12:42,557 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 04:12:42,557 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 04:12:42,558 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label06_true-unreach-call.c [2018-11-07 04:12:42,626 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6a53c8f1/d57c9a3a60b94c5aaab6cc7c8bdffdf7/FLAG9666ba208 [2018-11-07 04:12:43,517 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 04:12:43,518 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label06_true-unreach-call.c [2018-11-07 04:12:43,578 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6a53c8f1/d57c9a3a60b94c5aaab6cc7c8bdffdf7/FLAG9666ba208 [2018-11-07 04:12:43,594 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6a53c8f1/d57c9a3a60b94c5aaab6cc7c8bdffdf7 [2018-11-07 04:12:43,606 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 04:12:43,608 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 04:12:43,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 04:12:43,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 04:12:43,613 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 04:12:43,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:12:43" (1/1) ... [2018-11-07 04:12:43,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56927dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:43, skipping insertion in model container [2018-11-07 04:12:43,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:12:43" (1/1) ... [2018-11-07 04:12:43,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 04:12:43,877 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 04:12:45,941 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 04:12:45,951 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 04:12:47,036 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 04:12:47,096 INFO L193 MainTranslator]: Completed translation [2018-11-07 04:12:47,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:47 WrapperNode [2018-11-07 04:12:47,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 04:12:47,097 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 04:12:47,098 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 04:12:47,098 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 04:12:47,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:47" (1/1) ... [2018-11-07 04:12:47,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:47" (1/1) ... [2018-11-07 04:12:47,649 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 04:12:47,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 04:12:47,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 04:12:47,649 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 04:12:47,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:47" (1/1) ... [2018-11-07 04:12:47,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:47" (1/1) ... [2018-11-07 04:12:47,691 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:47" (1/1) ... [2018-11-07 04:12:47,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:47" (1/1) ... [2018-11-07 04:12:47,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:47" (1/1) ... [2018-11-07 04:12:47,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:47" (1/1) ... [2018-11-07 04:12:48,027 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:47" (1/1) ... [2018-11-07 04:12:48,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 04:12:48,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 04:12:48,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 04:12:48,134 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 04:12:48,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:47" (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 [2018-11-07 04:12:48,211 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 04:12:48,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 04:12:48,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 04:12:48,211 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-07 04:12:48,211 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-07 04:12:48,212 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-07 04:12:48,212 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-07 04:12:48,212 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 04:12:48,212 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 04:12:48,212 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 04:12:48,213 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 04:12:48,213 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 04:12:48,214 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 04:12:48,214 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 04:12:48,214 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 04:12:48,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 04:12:48,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 04:12:48,215 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 04:12:48,215 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 04:13:04,526 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 04:13:04,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:13:04 BoogieIcfgContainer [2018-11-07 04:13:04,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 04:13:04,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 04:13:04,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 04:13:04,532 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 04:13:04,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:12:43" (1/3) ... [2018-11-07 04:13:04,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66e6a024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:13:04, skipping insertion in model container [2018-11-07 04:13:04,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:47" (2/3) ... [2018-11-07 04:13:04,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66e6a024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:13:04, skipping insertion in model container [2018-11-07 04:13:04,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:13:04" (3/3) ... [2018-11-07 04:13:04,536 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label06_true-unreach-call.c [2018-11-07 04:13:04,546 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 04:13:04,558 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 04:13:04,575 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 04:13:04,633 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 04:13:04,634 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 04:13:04,634 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 04:13:04,634 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 04:13:04,634 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 04:13:04,634 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 04:13:04,634 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 04:13:04,634 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 04:13:04,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-07 04:13:04,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-11-07 04:13:04,712 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:13:04,715 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] [2018-11-07 04:13:04,717 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:13:04,725 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:13:04,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1394704370, now seen corresponding path program 1 times [2018-11-07 04:13:04,728 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:13:04,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:13:04,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:13:04,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:13:04,790 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:13:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:13:05,272 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 04:13:05,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:13:05,418 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:13:05,418 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 04:13:05,418 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:13:05,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 04:13:05,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 04:13:05,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 04:13:05,444 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-11-07 04:13:18,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:13:18,924 INFO L93 Difference]: Finished difference Result 5042 states and 9509 transitions. [2018-11-07 04:13:18,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 04:13:18,927 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2018-11-07 04:13:18,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:13:18,974 INFO L225 Difference]: With dead ends: 5042 [2018-11-07 04:13:18,974 INFO L226 Difference]: Without dead ends: 3262 [2018-11-07 04:13:18,988 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 04:13:19,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3262 states. [2018-11-07 04:13:19,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3262 to 3214. [2018-11-07 04:13:19,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3214 states. [2018-11-07 04:13:19,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3214 states to 3214 states and 5986 transitions. [2018-11-07 04:13:19,235 INFO L78 Accepts]: Start accepts. Automaton has 3214 states and 5986 transitions. Word has length 61 [2018-11-07 04:13:19,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:13:19,236 INFO L480 AbstractCegarLoop]: Abstraction has 3214 states and 5986 transitions. [2018-11-07 04:13:19,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 04:13:19,236 INFO L276 IsEmpty]: Start isEmpty. Operand 3214 states and 5986 transitions. [2018-11-07 04:13:19,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-11-07 04:13:19,251 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:13:19,251 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:13:19,252 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:13:19,252 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:13:19,252 INFO L82 PathProgramCache]: Analyzing trace with hash 236400336, now seen corresponding path program 1 times [2018-11-07 04:13:19,252 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:13:19,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:13:19,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:13:19,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:13:19,255 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:13:19,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:13:19,821 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:13:19,822 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:13:19,822 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 04:13:19,822 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:13:19,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 04:13:19,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 04:13:19,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-07 04:13:19,826 INFO L87 Difference]: Start difference. First operand 3214 states and 5986 transitions. Second operand 5 states. [2018-11-07 04:13:40,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:13:40,208 INFO L93 Difference]: Finished difference Result 9608 states and 17975 transitions. [2018-11-07 04:13:40,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 04:13:40,209 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2018-11-07 04:13:40,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:13:40,250 INFO L225 Difference]: With dead ends: 9608 [2018-11-07 04:13:40,251 INFO L226 Difference]: Without dead ends: 6400 [2018-11-07 04:13:40,262 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 04:13:40,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6400 states. [2018-11-07 04:13:40,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6400 to 6337. [2018-11-07 04:13:40,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6337 states. [2018-11-07 04:13:40,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6337 states to 6337 states and 10076 transitions. [2018-11-07 04:13:40,460 INFO L78 Accepts]: Start accepts. Automaton has 6337 states and 10076 transitions. Word has length 161 [2018-11-07 04:13:40,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:13:40,463 INFO L480 AbstractCegarLoop]: Abstraction has 6337 states and 10076 transitions. [2018-11-07 04:13:40,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 04:13:40,463 INFO L276 IsEmpty]: Start isEmpty. Operand 6337 states and 10076 transitions. [2018-11-07 04:13:40,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-11-07 04:13:40,474 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:13:40,474 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:13:40,474 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:13:40,478 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:13:40,479 INFO L82 PathProgramCache]: Analyzing trace with hash 2101705828, now seen corresponding path program 1 times [2018-11-07 04:13:40,479 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:13:40,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:13:40,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:13:40,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:13:40,480 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:13:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:13:40,850 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:13:40,850 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:13:40,850 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 04:13:40,850 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:13:40,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 04:13:40,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 04:13:40,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 04:13:40,852 INFO L87 Difference]: Start difference. First operand 6337 states and 10076 transitions. Second operand 6 states. [2018-11-07 04:13:56,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:13:56,034 INFO L93 Difference]: Finished difference Result 18995 states and 30526 transitions. [2018-11-07 04:13:56,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 04:13:56,035 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2018-11-07 04:13:56,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:13:56,096 INFO L225 Difference]: With dead ends: 18995 [2018-11-07 04:13:56,096 INFO L226 Difference]: Without dead ends: 12664 [2018-11-07 04:13:56,116 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 04:13:56,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12664 states. [2018-11-07 04:13:56,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12664 to 12414. [2018-11-07 04:13:56,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12414 states. [2018-11-07 04:13:56,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12414 states to 12414 states and 18890 transitions. [2018-11-07 04:13:56,432 INFO L78 Accepts]: Start accepts. Automaton has 12414 states and 18890 transitions. Word has length 171 [2018-11-07 04:13:56,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:13:56,432 INFO L480 AbstractCegarLoop]: Abstraction has 12414 states and 18890 transitions. [2018-11-07 04:13:56,432 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 04:13:56,433 INFO L276 IsEmpty]: Start isEmpty. Operand 12414 states and 18890 transitions. [2018-11-07 04:13:56,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-11-07 04:13:56,435 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:13:56,436 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:13:56,436 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:13:56,436 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:13:56,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1371790217, now seen corresponding path program 1 times [2018-11-07 04:13:56,437 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:13:56,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:13:56,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:13:56,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:13:56,438 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:13:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:13:56,783 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 04:13:56,907 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:13:56,907 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:13:56,907 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 04:13:56,907 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:13:56,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 04:13:56,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 04:13:56,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 04:13:56,909 INFO L87 Difference]: Start difference. First operand 12414 states and 18890 transitions. Second operand 6 states. [2018-11-07 04:14:11,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:14:11,043 INFO L93 Difference]: Finished difference Result 36974 states and 57795 transitions. [2018-11-07 04:14:11,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 04:14:11,046 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 226 [2018-11-07 04:14:11,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:14:11,188 INFO L225 Difference]: With dead ends: 36974 [2018-11-07 04:14:11,189 INFO L226 Difference]: Without dead ends: 24566 [2018-11-07 04:14:11,221 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 04:14:11,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24566 states. [2018-11-07 04:14:11,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24566 to 24168. [2018-11-07 04:14:11,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24168 states. [2018-11-07 04:14:11,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24168 states to 24168 states and 36341 transitions. [2018-11-07 04:14:11,806 INFO L78 Accepts]: Start accepts. Automaton has 24168 states and 36341 transitions. Word has length 226 [2018-11-07 04:14:11,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:14:11,806 INFO L480 AbstractCegarLoop]: Abstraction has 24168 states and 36341 transitions. [2018-11-07 04:14:11,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 04:14:11,807 INFO L276 IsEmpty]: Start isEmpty. Operand 24168 states and 36341 transitions. [2018-11-07 04:14:11,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-11-07 04:14:11,811 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:14:11,812 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:14:11,812 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:14:11,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:14:11,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1971346795, now seen corresponding path program 1 times [2018-11-07 04:14:11,813 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:14:11,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:14:11,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:14:11,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:14:11,814 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:14:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:14:12,654 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:14:12,655 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:14:12,655 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-07 04:14:12,655 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:14:12,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 04:14:12,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 04:14:12,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 04:14:12,657 INFO L87 Difference]: Start difference. First operand 24168 states and 36341 transitions. Second operand 7 states. [2018-11-07 04:14:42,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:14:42,767 INFO L93 Difference]: Finished difference Result 88838 states and 148890 transitions. [2018-11-07 04:14:42,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 04:14:42,774 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 278 [2018-11-07 04:14:42,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:14:43,112 INFO L225 Difference]: With dead ends: 88838 [2018-11-07 04:14:43,112 INFO L226 Difference]: Without dead ends: 64676 [2018-11-07 04:14:43,234 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 04:14:43,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64676 states. [2018-11-07 04:14:45,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64676 to 63953. [2018-11-07 04:14:45,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63953 states. [2018-11-07 04:14:45,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63953 states to 63953 states and 92999 transitions. [2018-11-07 04:14:45,223 INFO L78 Accepts]: Start accepts. Automaton has 63953 states and 92999 transitions. Word has length 278 [2018-11-07 04:14:45,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:14:45,223 INFO L480 AbstractCegarLoop]: Abstraction has 63953 states and 92999 transitions. [2018-11-07 04:14:45,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 04:14:45,224 INFO L276 IsEmpty]: Start isEmpty. Operand 63953 states and 92999 transitions. [2018-11-07 04:14:45,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2018-11-07 04:14:45,236 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:14:45,237 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 04:14:45,237 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:14:45,237 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:14:45,237 INFO L82 PathProgramCache]: Analyzing trace with hash 593330083, now seen corresponding path program 1 times [2018-11-07 04:14:45,238 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:14:45,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:14:45,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:14:45,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:14:45,239 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:14:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:14:46,189 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 318 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:14:46,190 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:14:46,190 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 04:14:46,191 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 491 with the following transitions: [2018-11-07 04:14:46,194 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5506], [5514], [5522], [5530], [5538], [5546], [5554], [5562], [5570], [5578], [5586], [5594], [5602], [5610], [5614], [5616], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5878], [5882], [5886], [5890], [5894], [5898], [5902], [5906], [5910], [5914], [5918], [5922], [5926], [5930], [5934], [5938], [5942], [5946], [5950], [5954], [5958], [5962], [5966], [5977], [5981], [5985], [5996], [6000], [6004], [6008], [6012], [6016], [6020], [6024], [6028], [6032], [6036], [6040], [6051], [6055], [6059], [6063], [6067], [6071], [6075], [6079], [6083], [6087], [6091], [6102], [6106], [6110], [6121], [6125], [6129], [6140], [6144], [6148], [6152], [6156], [6160], [6164], [6168], [6172], [6176], [6180], [6184], [6188], [6192], [6196], [6200], [6204], [6208], [6212], [6216], [6220], [6224], [6228], [6232], [6236], [6240], [6251], [6255], [6259], [6263], [6267], [6278], [6282], [6286], [6290], [6294], [6298], [6302], [6306], [6310], [6314], [6325], [6329], [6333], [6344], [6348], [6352], [6356], [6360], [6371], [6375], [6379], [6383], [6387], [6391], [6402], [6413], [6417], [6420], [6421], [6425], [6429], [6432], [6437], [6439], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 04:14:46,305 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 04:14:46,306 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 04:14:54,635 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 04:14:55,485 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 04:14:55,487 INFO L272 AbstractInterpreter]: Visited 220 different actions 220 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 04:14:55,533 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:14:55,533 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 04:15:00,723 INFO L227 lantSequenceWeakener]: Weakened 480 states. On average, predicates are now at 75.39% of their original sizes. [2018-11-07 04:15:00,723 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 04:15:01,259 INFO L415 sIntCurrentIteration]: We unified 489 AI predicates to 489 [2018-11-07 04:15:01,259 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 04:15:01,260 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 04:15:01,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 04:15:01,261 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:15:01,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 04:15:01,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 04:15:01,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 04:15:01,262 INFO L87 Difference]: Start difference. First operand 63953 states and 92999 transitions. Second operand 7 states. Received shutdown request... [2018-11-07 04:16:06,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 04:16:06,506 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 04:16:06,513 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 04:16:06,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:16:06 BoogieIcfgContainer [2018-11-07 04:16:06,514 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 04:16:06,515 INFO L168 Benchmark]: Toolchain (without parser) took 202908.58 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-11-07 04:16:06,516 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 04:16:06,517 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3488.31 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-11-07 04:16:06,518 INFO L168 Benchmark]: Boogie Procedure Inliner took 551.37 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 848.8 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. [2018-11-07 04:16:06,519 INFO L168 Benchmark]: Boogie Preprocessor took 484.38 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 51.5 MB). Peak memory consumption was 51.5 MB. Max. memory is 7.1 GB. [2018-11-07 04:16:06,520 INFO L168 Benchmark]: RCFGBuilder took 16393.61 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 146.8 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 527.0 MB). Peak memory consumption was 673.8 MB. Max. memory is 7.1 GB. [2018-11-07 04:16:06,521 INFO L168 Benchmark]: TraceAbstraction took 181985.61 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 3.0 GB in the end (delta: -1.3 GB). Peak memory consumption was 366.5 MB. Max. memory is 7.1 GB. [2018-11-07 04:16:06,526 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3488.31 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 551.37 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 848.8 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 484.38 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 51.5 MB). Peak memory consumption was 51.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16393.61 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 146.8 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 527.0 MB). Peak memory consumption was 673.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 181985.61 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 3.0 GB in the end (delta: -1.3 GB). Peak memory consumption was 366.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 178]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 178). Cancelled while BasicCegarLoop was constructing difference of abstraction (63953states) and FLOYD_HOARE automaton (currently 7 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (31672 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 181.8s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 159.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3068 SDtfs, 30187 SDslu, 3850 SDs, 0 SdLazy, 48300 SolverSat, 10702 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 103.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 535 GetRequests, 498 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63953occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 9.3s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.99809973257826 AbsIntWeakeningRatio, 0.05930470347648262 AbsIntAvgWeakeningVarsNumRemoved, 1070.5725971370143 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 1482 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 1387 NumberOfCodeBlocks, 1387 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1381 ConstructedInterpolants, 0 QuantifiedInterpolants, 1935438 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 534/536 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown