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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label48_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:57:38,500 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:57:38,502 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:57:38,514 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:57:38,514 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:57:38,515 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:57:38,517 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:57:38,518 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:57:38,520 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:57:38,521 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:57:38,522 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:57:38,522 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:57:38,523 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:57:38,524 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:57:38,525 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:57:38,526 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:57:38,527 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:57:38,529 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:57:38,531 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:57:38,532 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:57:38,533 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:57:38,535 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:57:38,537 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:57:38,537 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:57:38,538 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:57:38,539 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:57:38,540 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:57:38,540 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:57:38,541 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:57:38,543 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:57:38,543 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:57:38,543 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:57:38,544 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:57:38,544 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:57:38,545 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:57:38,546 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:57:38,546 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.epf [2018-11-07 15:57:38,567 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:57:38,568 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:57:38,569 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:57:38,569 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:57:38,569 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:57:38,569 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:57:38,569 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:57:38,569 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:57:38,570 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:57:38,570 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:57:38,570 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:57:38,570 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:57:38,571 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:57:38,572 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:57:38,572 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:57:38,572 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:57:38,572 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:57:38,572 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:57:38,572 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:57:38,574 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:57:38,574 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:57:38,574 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:57:38,574 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:57:38,574 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:57:38,575 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:57:38,575 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:57:38,575 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:57:38,575 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:57:38,575 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:57:38,576 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:57:38,577 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:57:38,577 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:57:38,577 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:57:38,578 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:57:38,642 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:57:38,655 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:57:38,658 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:57:38,660 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:57:38,660 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:57:38,661 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label48_true-unreach-call.c [2018-11-07 15:57:38,717 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/738404ab4/8cdf731705c4422ab80909bee3da4dd5/FLAG9ae8ed0ae [2018-11-07 15:57:39,585 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:57:39,586 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label48_true-unreach-call.c [2018-11-07 15:57:39,645 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/738404ab4/8cdf731705c4422ab80909bee3da4dd5/FLAG9ae8ed0ae [2018-11-07 15:57:39,661 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/738404ab4/8cdf731705c4422ab80909bee3da4dd5 [2018-11-07 15:57:39,672 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:57:39,674 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:57:39,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:57:39,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:57:39,682 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:57:39,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:57:39" (1/1) ... [2018-11-07 15:57:39,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@513039c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:39, skipping insertion in model container [2018-11-07 15:57:39,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:57:39" (1/1) ... [2018-11-07 15:57:39,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:57:39,947 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:57:41,961 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:57:41,965 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:57:42,989 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:57:43,047 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:57:43,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:43 WrapperNode [2018-11-07 15:57:43,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:57:43,049 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:57:43,050 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:57:43,050 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:57:43,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:43" (1/1) ... [2018-11-07 15:57:43,583 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:43" (1/1) ... [2018-11-07 15:57:43,594 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:57:43,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:57:43,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:57:43,595 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:57:43,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:43" (1/1) ... [2018-11-07 15:57:43,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:43" (1/1) ... [2018-11-07 15:57:43,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:43" (1/1) ... [2018-11-07 15:57:43,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:43" (1/1) ... [2018-11-07 15:57:43,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:43" (1/1) ... [2018-11-07 15:57:43,908 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:43" (1/1) ... [2018-11-07 15:57:43,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:43" (1/1) ... [2018-11-07 15:57:44,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:57:44,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:57:44,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:57:44,061 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:57:44,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:43" (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 15:57:44,127 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:57:44,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:57:44,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:57:44,128 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-07 15:57:44,128 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-07 15:57:44,128 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-07 15:57:44,128 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-07 15:57:44,128 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 15:57:44,129 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 15:57:44,129 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 15:57:44,129 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 15:57:44,129 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:57:44,129 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:57:44,130 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:57:44,130 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:57:44,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:57:44,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:57:44,131 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:57:44,131 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:57:59,211 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:57:59,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:57:59 BoogieIcfgContainer [2018-11-07 15:57:59,212 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:57:59,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:57:59,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:57:59,216 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:57:59,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:57:39" (1/3) ... [2018-11-07 15:57:59,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e22c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:57:59, skipping insertion in model container [2018-11-07 15:57:59,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:43" (2/3) ... [2018-11-07 15:57:59,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e22c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:57:59, skipping insertion in model container [2018-11-07 15:57:59,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:57:59" (3/3) ... [2018-11-07 15:57:59,220 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label48_true-unreach-call.c [2018-11-07 15:57:59,230 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:57:59,239 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:57:59,255 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:57:59,306 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:57:59,306 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:57:59,306 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:57:59,307 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:57:59,307 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:57:59,307 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:57:59,307 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:57:59,307 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:57:59,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-07 15:57:59,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-11-07 15:57:59,371 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:57:59,373 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:57:59,375 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:57:59,381 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:57:59,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1378870764, now seen corresponding path program 1 times [2018-11-07 15:57:59,384 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:57:59,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:57:59,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:57:59,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:57:59,434 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:57:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:57:59,981 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-07 15:58:00,048 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 15:58:00,050 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:58:00,051 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:58:00,051 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:58:00,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:58:00,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:58:00,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:58:00,078 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 4 states. [2018-11-07 15:58:20,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:58:20,143 INFO L93 Difference]: Finished difference Result 6465 states and 12332 transitions. [2018-11-07 15:58:20,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:58:20,145 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2018-11-07 15:58:20,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:58:20,203 INFO L225 Difference]: With dead ends: 6465 [2018-11-07 15:58:20,204 INFO L226 Difference]: Without dead ends: 4681 [2018-11-07 15:58:20,222 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:58:20,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2018-11-07 15:58:20,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 3200. [2018-11-07 15:58:20,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3200 states. [2018-11-07 15:58:20,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 5132 transitions. [2018-11-07 15:58:20,466 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 5132 transitions. Word has length 72 [2018-11-07 15:58:20,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:58:20,467 INFO L480 AbstractCegarLoop]: Abstraction has 3200 states and 5132 transitions. [2018-11-07 15:58:20,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:58:20,467 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 5132 transitions. [2018-11-07 15:58:20,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-11-07 15:58:20,475 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:58:20,476 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:58:20,476 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:58:20,476 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:58:20,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1394303167, now seen corresponding path program 1 times [2018-11-07 15:58:20,478 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:58:20,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:58:20,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:58:20,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:58:20,480 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:58:20,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:58:20,860 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:58:21,266 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:58:21,266 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:58:21,267 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:58:21,267 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:58:21,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:58:21,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:58:21,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:58:21,270 INFO L87 Difference]: Start difference. First operand 3200 states and 5132 transitions. Second operand 6 states. [2018-11-07 15:58:42,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:58:42,933 INFO L93 Difference]: Finished difference Result 12097 states and 19723 transitions. [2018-11-07 15:58:42,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:58:42,935 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2018-11-07 15:58:42,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:58:42,984 INFO L225 Difference]: With dead ends: 12097 [2018-11-07 15:58:42,984 INFO L226 Difference]: Without dead ends: 8903 [2018-11-07 15:58:42,998 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 15:58:43,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8903 states. [2018-11-07 15:58:43,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8903 to 8846. [2018-11-07 15:58:43,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8846 states. [2018-11-07 15:58:43,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8846 states to 8846 states and 12708 transitions. [2018-11-07 15:58:43,237 INFO L78 Accepts]: Start accepts. Automaton has 8846 states and 12708 transitions. Word has length 144 [2018-11-07 15:58:43,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:58:43,238 INFO L480 AbstractCegarLoop]: Abstraction has 8846 states and 12708 transitions. [2018-11-07 15:58:43,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:58:43,238 INFO L276 IsEmpty]: Start isEmpty. Operand 8846 states and 12708 transitions. [2018-11-07 15:58:43,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-11-07 15:58:43,244 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:58:43,244 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 15:58:43,245 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:58:43,245 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:58:43,245 INFO L82 PathProgramCache]: Analyzing trace with hash -322669480, now seen corresponding path program 1 times [2018-11-07 15:58:43,245 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:58:43,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:58:43,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:58:43,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:58:43,247 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:58:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:58:43,535 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:58:43,536 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:58:43,536 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:58:43,536 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:58:43,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:58:43,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:58:43,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:58:43,538 INFO L87 Difference]: Start difference. First operand 8846 states and 12708 transitions. Second operand 6 states. [2018-11-07 15:59:03,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:59:03,892 INFO L93 Difference]: Finished difference Result 29431 states and 43425 transitions. [2018-11-07 15:59:03,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:59:03,893 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-11-07 15:59:03,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:59:03,991 INFO L225 Difference]: With dead ends: 29431 [2018-11-07 15:59:03,991 INFO L226 Difference]: Without dead ends: 20591 [2018-11-07 15:59:04,028 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 [2018-11-07 15:59:04,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20591 states. [2018-11-07 15:59:04,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20591 to 20435. [2018-11-07 15:59:04,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20435 states. [2018-11-07 15:59:04,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20435 states to 20435 states and 28676 transitions. [2018-11-07 15:59:04,494 INFO L78 Accepts]: Start accepts. Automaton has 20435 states and 28676 transitions. Word has length 146 [2018-11-07 15:59:04,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:59:04,495 INFO L480 AbstractCegarLoop]: Abstraction has 20435 states and 28676 transitions. [2018-11-07 15:59:04,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:59:04,495 INFO L276 IsEmpty]: Start isEmpty. Operand 20435 states and 28676 transitions. [2018-11-07 15:59:04,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-11-07 15:59:04,501 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:59:04,506 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:59:04,506 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:59:04,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:59:04,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1699491839, now seen corresponding path program 1 times [2018-11-07 15:59:04,507 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:59:04,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:59:04,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:59:04,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:59:04,508 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:59:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:59:05,003 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:59:05,003 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:59:05,003 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:59:05,003 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:59:05,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:59:05,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:59:05,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:59:05,006 INFO L87 Difference]: Start difference. First operand 20435 states and 28676 transitions. Second operand 6 states. [2018-11-07 15:59:20,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:59:20,648 INFO L93 Difference]: Finished difference Result 62247 states and 89680 transitions. [2018-11-07 15:59:20,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 15:59:20,648 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2018-11-07 15:59:20,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:59:20,824 INFO L225 Difference]: With dead ends: 62247 [2018-11-07 15:59:20,824 INFO L226 Difference]: Without dead ends: 41818 [2018-11-07 15:59:20,879 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 15:59:20,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41818 states. [2018-11-07 15:59:22,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41818 to 41444. [2018-11-07 15:59:22,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41444 states. [2018-11-07 15:59:22,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41444 states to 41444 states and 57630 transitions. [2018-11-07 15:59:22,186 INFO L78 Accepts]: Start accepts. Automaton has 41444 states and 57630 transitions. Word has length 154 [2018-11-07 15:59:22,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:59:22,187 INFO L480 AbstractCegarLoop]: Abstraction has 41444 states and 57630 transitions. [2018-11-07 15:59:22,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:59:22,187 INFO L276 IsEmpty]: Start isEmpty. Operand 41444 states and 57630 transitions. [2018-11-07 15:59:22,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-11-07 15:59:22,194 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:59:22,194 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 15:59:22,195 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:59:22,195 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:59:22,195 INFO L82 PathProgramCache]: Analyzing trace with hash -666275863, now seen corresponding path program 1 times [2018-11-07 15:59:22,195 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:59:22,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:59:22,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:59:22,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:59:22,197 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:59:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:59:22,511 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:59:22,512 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:59:22,512 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 15:59:22,512 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:59:22,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 15:59:22,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 15:59:22,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 15:59:22,515 INFO L87 Difference]: Start difference. First operand 41444 states and 57630 transitions. Second operand 5 states. [2018-11-07 15:59:42,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:59:42,200 INFO L93 Difference]: Finished difference Result 125571 states and 179845 transitions. [2018-11-07 15:59:42,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 15:59:42,200 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2018-11-07 15:59:42,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:59:42,463 INFO L225 Difference]: With dead ends: 125571 [2018-11-07 15:59:42,463 INFO L226 Difference]: Without dead ends: 84133 [2018-11-07 15:59:42,534 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 15:59:42,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84133 states. [2018-11-07 15:59:43,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84133 to 82938. [2018-11-07 15:59:43,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82938 states. [2018-11-07 15:59:44,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82938 states to 82938 states and 106683 transitions. [2018-11-07 15:59:44,109 INFO L78 Accepts]: Start accepts. Automaton has 82938 states and 106683 transitions. Word has length 174 [2018-11-07 15:59:44,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:59:44,109 INFO L480 AbstractCegarLoop]: Abstraction has 82938 states and 106683 transitions. [2018-11-07 15:59:44,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 15:59:44,111 INFO L276 IsEmpty]: Start isEmpty. Operand 82938 states and 106683 transitions. [2018-11-07 15:59:44,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-11-07 15:59:44,118 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:59:44,118 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 15:59:44,118 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:59:44,119 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:59:44,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1062511734, now seen corresponding path program 1 times [2018-11-07 15:59:44,119 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:59:44,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:59:44,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:59:44,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:59:44,120 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:59:44,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:59:44,488 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:59:44,488 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:59:44,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:59:44,489 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:59:44,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:59:44,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:59:44,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:59:44,490 INFO L87 Difference]: Start difference. First operand 82938 states and 106683 transitions. Second operand 6 states. [2018-11-07 15:59:58,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:59:58,731 INFO L93 Difference]: Finished difference Result 187546 states and 251654 transitions. [2018-11-07 15:59:58,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:59:58,732 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 237 [2018-11-07 15:59:58,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:59:59,014 INFO L225 Difference]: With dead ends: 187546 [2018-11-07 15:59:59,014 INFO L226 Difference]: Without dead ends: 104614 [2018-11-07 15:59:59,159 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 [2018-11-07 15:59:59,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104614 states. [2018-11-07 16:00:01,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104614 to 103886. [2018-11-07 16:00:01,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103886 states. [2018-11-07 16:00:01,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103886 states to 103886 states and 134056 transitions. [2018-11-07 16:00:01,431 INFO L78 Accepts]: Start accepts. Automaton has 103886 states and 134056 transitions. Word has length 237 [2018-11-07 16:00:01,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 16:00:01,432 INFO L480 AbstractCegarLoop]: Abstraction has 103886 states and 134056 transitions. [2018-11-07 16:00:01,432 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 16:00:01,432 INFO L276 IsEmpty]: Start isEmpty. Operand 103886 states and 134056 transitions. [2018-11-07 16:00:01,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2018-11-07 16:00:01,447 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 16:00:01,447 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:00:01,448 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 16:00:01,448 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:00:01,448 INFO L82 PathProgramCache]: Analyzing trace with hash 771212805, now seen corresponding path program 1 times [2018-11-07 16:00:01,448 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 16:00:01,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:00:01,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:00:01,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:00:01,450 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 16:00:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:00:02,020 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 16:00:02,305 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-07 16:00:02,305 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 16:00:02,306 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 16:00:02,307 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 560 with the following transitions: [2018-11-07 16:00:02,311 INFO L202 CegarAbsIntRunner]: [0], [1], [4196], [4200], [4204], [4208], [4212], [4216], [4220], [4224], [4228], [4232], [4236], [4240], [4244], [4248], [4252], [4256], [4260], [4264], [4268], [4279], [4290], [4294], [4298], [4309], [4313], [4317], [4321], [4325], [4329], [4333], [4337], [4341], [4345], [4349], [4353], [4357], [4361], [4365], [4369], [4373], [4377], [4381], [4385], [4396], [4400], [4404], [4408], [4412], [4416], [4420], [4431], [4435], [4439], [4443], [4454], [4458], [4462], [4466], [4470], [4474], [4478], [4482], [4486], [4490], [4494], [4498], [4502], [4506], [4510], [4514], [4518], [4522], [4526], [4530], [4534], [4538], [4542], [4553], [4557], [4561], [4565], [4569], [4573], [4577], [4581], [4585], [4589], [4593], [4597], [4601], [4605], [4609], [4620], [4624], [4628], [4632], [4636], [4647], [4651], [4655], [4659], [4663], [4667], [4671], [4675], [4679], [4690], [4694], [4698], [4709], [4713], [4717], [4721], [4725], [4729], [4733], [4737], [4741], [4745], [4749], [4753], [4764], [4768], [4772], [4776], [4780], [4784], [4788], [4792], [4803], [4807], [4811], [4815], [4819], [4823], [4827], [4831], [4835], [4839], [4843], [4847], [4858], [4862], [4873], [4877], [4881], [4885], [4896], [4900], [4904], [4908], [4912], [4916], [4920], [4924], [4935], [4939], [4943], [4954], [4958], [4962], [4966], [4970], [4974], [4978], [4982], [4986], [4990], [4994], [4998], [5002], [5006], [5010], [5014], [5018], [5022], [5026], [5030], [5034], [5038], [5042], [5046], [5050], [5054], [5058], [5062], [5066], [5070], [5074], [5078], [5082], [5086], [5090], [5093], [5226], [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], [5618], [5626], [5634], [5642], [5650], [5658], [5666], [5674], [5682], [5690], [5698], [5702], [5704], [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], [6421], [6425], [6429], [6440], [6444], [6455], [6459], [6463], [6467], [6471], [6475], [6486], [6490], [6494], [6498], [6502], [6506], [6510], [6514], [6525], [6529], [6533], [6537], [6541], [6545], [6549], [6553], [6557], [6561], [6565], [6569], [6573], [6577], [6581], [6585], [6589], [6593], [6604], [6608], [6619], [6623], [6634], [6645], [6649], [6653], [6657], [6661], [6665], [6669], [6673], [6677], [6681], [6685], [6689], [6693], [6697], [6701], [6712], [6716], [6727], [6731], [6735], [6739], [6743], [6747], [6751], [6755], [6759], [6763], [6767], [6771], [6775], [6779], [6783], [6787], [6791], [6795], [6799], [6801], [6802], [6806], [6810], [6816], [6820], [6822], [6835], [6836], [6837], [6838], [6839], [6841], [6842] [2018-11-07 16:00:02,386 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 16:00:02,386 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 16:00:03,741 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 16:00:03,744 INFO L272 AbstractInterpreter]: Visited 488 different actions 488 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 16:00:03,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:00:03,776 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 16:00:04,945 INFO L227 lantSequenceWeakener]: Weakened 550 states. On average, predicates are now at 75.36% of their original sizes. [2018-11-07 16:00:04,946 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 16:00:05,584 INFO L415 sIntCurrentIteration]: We unified 558 AI predicates to 558 [2018-11-07 16:00:05,584 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 16:00:05,585 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 16:00:05,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [4] total 11 [2018-11-07 16:00:05,586 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 16:00:05,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 16:00:05,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 16:00:05,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-11-07 16:00:05,588 INFO L87 Difference]: Start difference. First operand 103886 states and 134056 transitions. Second operand 9 states. [2018-11-07 16:00:12,546 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown