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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label53_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 08:54:46,992 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 08:54:46,994 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 08:54:47,012 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 08:54:47,012 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 08:54:47,013 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 08:54:47,016 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 08:54:47,018 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 08:54:47,020 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 08:54:47,021 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 08:54:47,024 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 08:54:47,024 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 08:54:47,026 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 08:54:47,027 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 08:54:47,036 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 08:54:47,037 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 08:54:47,037 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 08:54:47,040 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 08:54:47,044 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 08:54:47,046 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 08:54:47,049 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 08:54:47,050 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 08:54:47,053 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 08:54:47,054 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 08:54:47,054 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 08:54:47,055 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 08:54:47,056 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 08:54:47,056 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 08:54:47,058 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 08:54:47,059 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 08:54:47,059 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 08:54:47,061 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 08:54:47,062 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 08:54:47,062 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 08:54:47,065 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 08:54:47,065 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 08:54:47,066 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 08:54:47,088 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 08:54:47,088 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 08:54:47,089 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 08:54:47,089 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 08:54:47,089 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 08:54:47,089 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 08:54:47,090 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 08:54:47,090 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 08:54:47,090 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 08:54:47,090 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 08:54:47,090 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 08:54:47,091 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 08:54:47,091 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 08:54:47,091 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 08:54:47,091 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 08:54:47,092 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 08:54:47,092 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 08:54:47,092 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 08:54:47,092 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 08:54:47,092 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 08:54:47,093 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 08:54:47,093 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 08:54:47,093 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 08:54:47,093 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 08:54:47,093 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 08:54:47,094 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 08:54:47,094 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:54:47,094 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 08:54:47,094 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 08:54:47,094 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 08:54:47,095 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 08:54:47,095 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 08:54:47,095 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 08:54:47,095 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 08:54:47,095 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 08:54:47,095 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 08:54:47,150 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 08:54:47,164 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 08:54:47,168 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 08:54:47,171 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 08:54:47,172 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 08:54:47,172 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label53_true-unreach-call.c [2018-11-07 08:54:47,245 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f48e43a1/947be570b1ff4574bb6b328b92db26aa/FLAGc7421dc1f [2018-11-07 08:54:48,025 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 08:54:48,026 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label53_true-unreach-call.c [2018-11-07 08:54:48,072 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f48e43a1/947be570b1ff4574bb6b328b92db26aa/FLAGc7421dc1f [2018-11-07 08:54:48,092 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f48e43a1/947be570b1ff4574bb6b328b92db26aa [2018-11-07 08:54:48,103 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 08:54:48,105 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 08:54:48,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 08:54:48,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 08:54:48,113 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 08:54:48,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:54:48" (1/1) ... [2018-11-07 08:54:48,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37f3e3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:48, skipping insertion in model container [2018-11-07 08:54:48,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:54:48" (1/1) ... [2018-11-07 08:54:48,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 08:54:48,292 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 08:54:49,865 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:54:49,872 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 08:54:50,641 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:54:50,682 INFO L193 MainTranslator]: Completed translation [2018-11-07 08:54:50,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:50 WrapperNode [2018-11-07 08:54:50,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 08:54:50,685 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 08:54:50,685 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 08:54:50,685 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 08:54:50,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:50" (1/1) ... [2018-11-07 08:54:51,150 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:50" (1/1) ... [2018-11-07 08:54:51,160 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 08:54:51,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 08:54:51,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 08:54:51,161 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 08:54:51,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:50" (1/1) ... [2018-11-07 08:54:51,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:50" (1/1) ... [2018-11-07 08:54:51,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:50" (1/1) ... [2018-11-07 08:54:51,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:50" (1/1) ... [2018-11-07 08:54:51,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:50" (1/1) ... [2018-11-07 08:54:51,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:50" (1/1) ... [2018-11-07 08:54:51,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:50" (1/1) ... [2018-11-07 08:54:51,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 08:54:51,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 08:54:51,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 08:54:51,433 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 08:54:51,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:50" (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 08:54:51,505 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 08:54:51,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 08:54:51,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 08:54:51,506 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 08:54:51,506 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 08:54:51,507 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 08:54:51,507 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 08:54:51,507 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 08:54:51,507 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 08:54:51,507 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 08:54:51,508 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 08:54:51,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 08:54:51,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 08:54:51,509 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 08:54:51,509 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 08:55:02,292 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 08:55:02,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:55:02 BoogieIcfgContainer [2018-11-07 08:55:02,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 08:55:02,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 08:55:02,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 08:55:02,298 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 08:55:02,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:54:48" (1/3) ... [2018-11-07 08:55:02,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5d378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:55:02, skipping insertion in model container [2018-11-07 08:55:02,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:50" (2/3) ... [2018-11-07 08:55:02,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5d378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:55:02, skipping insertion in model container [2018-11-07 08:55:02,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:55:02" (3/3) ... [2018-11-07 08:55:02,302 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label53_true-unreach-call.c [2018-11-07 08:55:02,313 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 08:55:02,325 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 08:55:02,344 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 08:55:02,395 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 08:55:02,395 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 08:55:02,395 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 08:55:02,395 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 08:55:02,395 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 08:55:02,395 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 08:55:02,396 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 08:55:02,396 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 08:55:02,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 08:55:02,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-07 08:55:02,450 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:55:02,451 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] [2018-11-07 08:55:02,453 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:55:02,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:55:02,461 INFO L82 PathProgramCache]: Analyzing trace with hash 403353444, now seen corresponding path program 1 times [2018-11-07 08:55:02,464 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:55:02,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:02,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:55:02,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:02,527 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:55:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:55:02,952 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:55:03,020 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 08:55:03,022 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:55:03,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 08:55:03,023 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:55:03,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:55:03,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:55:03,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:55:03,057 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-11-07 08:55:12,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:55:12,068 INFO L93 Difference]: Finished difference Result 3093 states and 5715 transitions. [2018-11-07 08:55:12,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:55:12,073 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2018-11-07 08:55:12,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:55:12,121 INFO L225 Difference]: With dead ends: 3093 [2018-11-07 08:55:12,121 INFO L226 Difference]: Without dead ends: 1971 [2018-11-07 08:55:12,139 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 08:55:12,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1971 states. [2018-11-07 08:55:12,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1971 to 1957. [2018-11-07 08:55:12,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1957 states. [2018-11-07 08:55:12,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 3535 transitions. [2018-11-07 08:55:12,332 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 3535 transitions. Word has length 38 [2018-11-07 08:55:12,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:55:12,332 INFO L480 AbstractCegarLoop]: Abstraction has 1957 states and 3535 transitions. [2018-11-07 08:55:12,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:55:12,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 3535 transitions. [2018-11-07 08:55:12,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-11-07 08:55:12,341 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:55:12,344 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:55:12,344 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:55:12,345 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:55:12,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1014320268, now seen corresponding path program 1 times [2018-11-07 08:55:12,345 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:55:12,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:12,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:55:12,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:12,349 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:55:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:55:13,035 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:55:13,035 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:55:13,035 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:55:13,035 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:55:13,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:55:13,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:55:13,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:55:13,039 INFO L87 Difference]: Start difference. First operand 1957 states and 3535 transitions. Second operand 6 states. [2018-11-07 08:55:23,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:55:23,754 INFO L93 Difference]: Finished difference Result 5627 states and 10356 transitions. [2018-11-07 08:55:23,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:55:23,757 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2018-11-07 08:55:23,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:55:23,794 INFO L225 Difference]: With dead ends: 5627 [2018-11-07 08:55:23,795 INFO L226 Difference]: Without dead ends: 3676 [2018-11-07 08:55:23,802 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:55:23,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3676 states. [2018-11-07 08:55:23,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3676 to 3643. [2018-11-07 08:55:23,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3643 states. [2018-11-07 08:55:23,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3643 states to 3643 states and 5987 transitions. [2018-11-07 08:55:23,930 INFO L78 Accepts]: Start accepts. Automaton has 3643 states and 5987 transitions. Word has length 121 [2018-11-07 08:55:23,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:55:23,930 INFO L480 AbstractCegarLoop]: Abstraction has 3643 states and 5987 transitions. [2018-11-07 08:55:23,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:55:23,931 INFO L276 IsEmpty]: Start isEmpty. Operand 3643 states and 5987 transitions. [2018-11-07 08:55:23,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-11-07 08:55:23,943 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:55:23,944 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:55:23,944 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:55:23,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:55:23,944 INFO L82 PathProgramCache]: Analyzing trace with hash -504039204, now seen corresponding path program 1 times [2018-11-07 08:55:23,948 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:55:23,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:23,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:55:23,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:23,949 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:55:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:55:24,248 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:55:24,249 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:55:24,249 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 08:55:24,249 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:55:24,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 08:55:24,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 08:55:24,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 08:55:24,251 INFO L87 Difference]: Start difference. First operand 3643 states and 5987 transitions. Second operand 5 states. [2018-11-07 08:55:33,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:55:33,702 INFO L93 Difference]: Finished difference Result 10948 states and 18497 transitions. [2018-11-07 08:55:33,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 08:55:33,706 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2018-11-07 08:55:33,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:55:33,755 INFO L225 Difference]: With dead ends: 10948 [2018-11-07 08:55:33,756 INFO L226 Difference]: Without dead ends: 7311 [2018-11-07 08:55:33,770 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 08:55:33,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7311 states. [2018-11-07 08:55:33,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7311 to 7121. [2018-11-07 08:55:33,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7121 states. [2018-11-07 08:55:34,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7121 states to 7121 states and 10911 transitions. [2018-11-07 08:55:34,005 INFO L78 Accepts]: Start accepts. Automaton has 7121 states and 10911 transitions. Word has length 137 [2018-11-07 08:55:34,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:55:34,005 INFO L480 AbstractCegarLoop]: Abstraction has 7121 states and 10911 transitions. [2018-11-07 08:55:34,006 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 08:55:34,007 INFO L276 IsEmpty]: Start isEmpty. Operand 7121 states and 10911 transitions. [2018-11-07 08:55:34,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-11-07 08:55:34,011 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:55:34,011 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:55:34,012 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:55:34,012 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:55:34,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1493608594, now seen corresponding path program 1 times [2018-11-07 08:55:34,012 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:55:34,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:34,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:55:34,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:34,015 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:55:34,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:55:34,412 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:55:34,491 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:55:34,492 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:55:34,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:55:34,492 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:55:34,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:55:34,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:55:34,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:55:34,493 INFO L87 Difference]: Start difference. First operand 7121 states and 10911 transitions. Second operand 6 states. [2018-11-07 08:55:44,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:55:44,864 INFO L93 Difference]: Finished difference Result 19738 states and 31215 transitions. [2018-11-07 08:55:44,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:55:44,876 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2018-11-07 08:55:44,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:55:44,947 INFO L225 Difference]: With dead ends: 19738 [2018-11-07 08:55:44,947 INFO L226 Difference]: Without dead ends: 12623 [2018-11-07 08:55:44,991 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 08:55:45,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12623 states. [2018-11-07 08:55:45,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12623 to 12416. [2018-11-07 08:55:45,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12416 states. [2018-11-07 08:55:45,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12416 states to 12416 states and 17988 transitions. [2018-11-07 08:55:45,305 INFO L78 Accepts]: Start accepts. Automaton has 12416 states and 17988 transitions. Word has length 174 [2018-11-07 08:55:45,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:55:45,306 INFO L480 AbstractCegarLoop]: Abstraction has 12416 states and 17988 transitions. [2018-11-07 08:55:45,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:55:45,306 INFO L276 IsEmpty]: Start isEmpty. Operand 12416 states and 17988 transitions. [2018-11-07 08:55:45,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-11-07 08:55:45,313 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:55:45,313 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:55:45,313 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:55:45,314 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:55:45,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1047575411, now seen corresponding path program 1 times [2018-11-07 08:55:45,318 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:55:45,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:45,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:55:45,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:45,320 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:55:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:55:45,814 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:55:45,814 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:55:45,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:55:45,815 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:55:45,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:55:45,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:55:45,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:55:45,816 INFO L87 Difference]: Start difference. First operand 12416 states and 17988 transitions. Second operand 6 states. [2018-11-07 08:55:59,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:55:59,595 INFO L93 Difference]: Finished difference Result 42951 states and 69468 transitions. [2018-11-07 08:55:59,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 08:55:59,600 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 196 [2018-11-07 08:55:59,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:55:59,808 INFO L225 Difference]: With dead ends: 42951 [2018-11-07 08:55:59,808 INFO L226 Difference]: Without dead ends: 30541 [2018-11-07 08:55:59,899 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 08:55:59,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30541 states. [2018-11-07 08:56:00,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30541 to 30295. [2018-11-07 08:56:00,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30295 states. [2018-11-07 08:56:00,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30295 states to 30295 states and 43915 transitions. [2018-11-07 08:56:00,914 INFO L78 Accepts]: Start accepts. Automaton has 30295 states and 43915 transitions. Word has length 196 [2018-11-07 08:56:00,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:56:00,915 INFO L480 AbstractCegarLoop]: Abstraction has 30295 states and 43915 transitions. [2018-11-07 08:56:00,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:56:00,915 INFO L276 IsEmpty]: Start isEmpty. Operand 30295 states and 43915 transitions. [2018-11-07 08:56:01,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-11-07 08:56:01,248 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:56:01,249 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:56:01,249 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:56:01,253 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:56:01,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1056237497, now seen corresponding path program 1 times [2018-11-07 08:56:01,253 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:56:01,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:56:01,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:56:01,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:56:01,255 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:56:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:56:01,580 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:56:02,044 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:56:02,045 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:56:02,045 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:56:02,045 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:56:02,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:56:02,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:56:02,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:56:02,048 INFO L87 Difference]: Start difference. First operand 30295 states and 43915 transitions. Second operand 6 states. [2018-11-07 08:56:12,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:56:12,466 INFO L93 Difference]: Finished difference Result 73835 states and 115996 transitions. [2018-11-07 08:56:12,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:56:12,467 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 219 [2018-11-07 08:56:12,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:56:12,692 INFO L225 Difference]: With dead ends: 73835 [2018-11-07 08:56:12,693 INFO L226 Difference]: Without dead ends: 43546 [2018-11-07 08:56:12,796 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:56:12,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43546 states. [2018-11-07 08:56:13,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43546 to 43233. [2018-11-07 08:56:13,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43233 states. [2018-11-07 08:56:13,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43233 states to 43233 states and 61314 transitions. [2018-11-07 08:56:13,952 INFO L78 Accepts]: Start accepts. Automaton has 43233 states and 61314 transitions. Word has length 219 [2018-11-07 08:56:13,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:56:13,958 INFO L480 AbstractCegarLoop]: Abstraction has 43233 states and 61314 transitions. [2018-11-07 08:56:13,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:56:13,958 INFO L276 IsEmpty]: Start isEmpty. Operand 43233 states and 61314 transitions. [2018-11-07 08:56:13,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-11-07 08:56:13,981 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:56:13,981 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 08:56:13,982 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:56:13,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:56:13,982 INFO L82 PathProgramCache]: Analyzing trace with hash 342183432, now seen corresponding path program 1 times [2018-11-07 08:56:13,982 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:56:13,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:56:13,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:56:13,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:56:13,984 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:56:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:56:14,347 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 62 proven. 94 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 08:56:14,347 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:56:14,347 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:56:14,350 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 244 with the following transitions: [2018-11-07 08:56:14,352 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2831], [2833], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3257], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3285], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 08:56:14,423 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:56:14,423 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:56:15,124 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:56:15,127 INFO L272 AbstractInterpreter]: Visited 111 different actions 111 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 08:56:15,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:56:15,144 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:56:15,742 INFO L227 lantSequenceWeakener]: Weakened 234 states. On average, predicates are now at 71.08% of their original sizes. [2018-11-07 08:56:15,743 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:56:16,009 INFO L415 sIntCurrentIteration]: We unified 242 AI predicates to 242 [2018-11-07 08:56:16,010 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:56:16,011 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:56:16,011 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2018-11-07 08:56:16,011 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:56:16,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:56:16,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:56:16,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:56:16,014 INFO L87 Difference]: Start difference. First operand 43233 states and 61314 transitions. Second operand 6 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown