java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label37_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 17:19:28,949 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 17:19:28,951 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 17:19:28,963 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 17:19:28,963 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 17:19:28,964 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 17:19:28,966 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 17:19:28,968 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 17:19:28,969 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 17:19:28,970 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 17:19:28,971 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 17:19:28,971 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 17:19:28,972 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 17:19:28,973 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 17:19:28,974 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 17:19:28,975 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 17:19:28,976 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 17:19:28,978 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 17:19:28,980 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 17:19:28,982 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 17:19:28,983 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 17:19:28,984 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 17:19:28,990 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 17:19:28,990 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 17:19:28,990 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 17:19:28,992 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 17:19:28,996 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 17:19:28,997 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 17:19:28,998 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 17:19:28,999 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 17:19:28,999 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 17:19:29,005 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 17:19:29,005 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 17:19:29,005 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 17:19:29,007 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 17:19:29,007 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 17:19:29,007 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 17:19:29,037 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 17:19:29,037 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 17:19:29,038 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 17:19:29,038 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 17:19:29,038 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 17:19:29,039 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 17:19:29,043 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 17:19:29,043 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 17:19:29,043 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 17:19:29,043 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 17:19:29,044 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 17:19:29,044 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 17:19:29,045 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 17:19:29,046 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 17:19:29,046 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 17:19:29,046 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 17:19:29,047 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 17:19:29,047 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 17:19:29,047 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 17:19:29,047 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 17:19:29,047 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 17:19:29,048 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 17:19:29,049 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 17:19:29,049 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 17:19:29,049 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:19:29,050 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 17:19:29,050 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 17:19:29,050 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 17:19:29,050 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 17:19:29,050 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 17:19:29,051 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 17:19:29,051 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 17:19:29,051 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 17:19:29,051 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 17:19:29,096 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 17:19:29,109 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 17:19:29,113 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 17:19:29,114 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 17:19:29,115 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 17:19:29,116 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label37_false-unreach-call.c [2018-10-24 17:19:29,172 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7d8869327/f1d078d0842a4379941313da226b5029/FLAG46d7ee324 [2018-10-24 17:19:29,822 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 17:19:29,825 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label37_false-unreach-call.c [2018-10-24 17:19:29,842 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7d8869327/f1d078d0842a4379941313da226b5029/FLAG46d7ee324 [2018-10-24 17:19:29,862 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7d8869327/f1d078d0842a4379941313da226b5029 [2018-10-24 17:19:29,875 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 17:19:29,878 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 17:19:29,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 17:19:29,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 17:19:29,887 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 17:19:29,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:19:29" (1/1) ... [2018-10-24 17:19:29,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28a8effd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:29, skipping insertion in model container [2018-10-24 17:19:29,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:19:29" (1/1) ... [2018-10-24 17:19:29,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 17:19:29,992 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 17:19:30,719 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:19:30,725 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 17:19:31,053 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:19:31,075 INFO L193 MainTranslator]: Completed translation [2018-10-24 17:19:31,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:31 WrapperNode [2018-10-24 17:19:31,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 17:19:31,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 17:19:31,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 17:19:31,077 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 17:19:31,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:31" (1/1) ... [2018-10-24 17:19:31,120 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:31" (1/1) ... [2018-10-24 17:19:31,365 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 17:19:31,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 17:19:31,366 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 17:19:31,366 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 17:19:31,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:31" (1/1) ... [2018-10-24 17:19:31,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:31" (1/1) ... [2018-10-24 17:19:31,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:31" (1/1) ... [2018-10-24 17:19:31,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:31" (1/1) ... [2018-10-24 17:19:31,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:31" (1/1) ... [2018-10-24 17:19:31,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:31" (1/1) ... [2018-10-24 17:19:31,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:31" (1/1) ... [2018-10-24 17:19:31,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 17:19:31,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 17:19:31,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 17:19:31,478 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 17:19:31,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:19:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 17:19:31,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 17:19:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 17:19:31,550 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 17:19:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 17:19:31,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 17:19:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 17:19:31,551 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 17:19:36,569 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 17:19:36,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:19:36 BoogieIcfgContainer [2018-10-24 17:19:36,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 17:19:36,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 17:19:36,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 17:19:36,577 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 17:19:36,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 05:19:29" (1/3) ... [2018-10-24 17:19:36,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de27894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:19:36, skipping insertion in model container [2018-10-24 17:19:36,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:31" (2/3) ... [2018-10-24 17:19:36,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de27894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:19:36, skipping insertion in model container [2018-10-24 17:19:36,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:19:36" (3/3) ... [2018-10-24 17:19:36,584 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label37_false-unreach-call.c [2018-10-24 17:19:36,596 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 17:19:36,611 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 17:19:36,633 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 17:19:36,690 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 17:19:36,690 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 17:19:36,691 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 17:19:36,691 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 17:19:36,691 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 17:19:36,691 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 17:19:36,691 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 17:19:36,692 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 17:19:36,745 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-24 17:19:36,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-24 17:19:36,768 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:19:36,769 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:19:36,772 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:19:36,780 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:19:36,781 INFO L82 PathProgramCache]: Analyzing trace with hash 182730809, now seen corresponding path program 1 times [2018-10-24 17:19:36,784 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:19:36,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:36,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:19:36,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:36,856 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:19:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:19:37,848 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 17:19:38,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:19:38,050 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:19:38,051 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:19:38,051 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:19:38,059 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 17:19:38,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 17:19:38,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:19:38,080 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-10-24 17:19:40,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:19:40,398 INFO L93 Difference]: Finished difference Result 845 states and 1487 transitions. [2018-10-24 17:19:40,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 17:19:40,400 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 156 [2018-10-24 17:19:40,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:19:40,426 INFO L225 Difference]: With dead ends: 845 [2018-10-24 17:19:40,427 INFO L226 Difference]: Without dead ends: 531 [2018-10-24 17:19:40,435 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:19:40,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2018-10-24 17:19:40,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 530. [2018-10-24 17:19:40,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2018-10-24 17:19:40,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 869 transitions. [2018-10-24 17:19:40,547 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 869 transitions. Word has length 156 [2018-10-24 17:19:40,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:19:40,548 INFO L481 AbstractCegarLoop]: Abstraction has 530 states and 869 transitions. [2018-10-24 17:19:40,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 17:19:40,549 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 869 transitions. [2018-10-24 17:19:40,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-24 17:19:40,565 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:19:40,566 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:19:40,569 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:19:40,569 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:19:40,570 INFO L82 PathProgramCache]: Analyzing trace with hash 2037660448, now seen corresponding path program 1 times [2018-10-24 17:19:40,570 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:19:40,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:40,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:19:40,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:40,573 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:19:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:19:40,958 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:19:40,958 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:19:40,958 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 17:19:40,959 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:19:40,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 17:19:40,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 17:19:40,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 17:19:40,962 INFO L87 Difference]: Start difference. First operand 530 states and 869 transitions. Second operand 6 states. [2018-10-24 17:19:44,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:19:44,937 INFO L93 Difference]: Finished difference Result 1599 states and 2688 transitions. [2018-10-24 17:19:44,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 17:19:44,938 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2018-10-24 17:19:44,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:19:44,950 INFO L225 Difference]: With dead ends: 1599 [2018-10-24 17:19:44,950 INFO L226 Difference]: Without dead ends: 1075 [2018-10-24 17:19:44,954 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 17:19:44,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2018-10-24 17:19:45,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 1034. [2018-10-24 17:19:45,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1034 states. [2018-10-24 17:19:45,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1689 transitions. [2018-10-24 17:19:45,031 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1689 transitions. Word has length 166 [2018-10-24 17:19:45,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:19:45,031 INFO L481 AbstractCegarLoop]: Abstraction has 1034 states and 1689 transitions. [2018-10-24 17:19:45,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 17:19:45,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1689 transitions. [2018-10-24 17:19:45,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-10-24 17:19:45,043 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:19:45,043 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 17:19:45,043 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:19:45,047 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:19:45,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1179442109, now seen corresponding path program 1 times [2018-10-24 17:19:45,048 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:19:45,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:45,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:19:45,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:45,049 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:19:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:19:45,442 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:19:45,442 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:19:45,443 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:19:45,443 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:19:45,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 17:19:45,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 17:19:45,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:19:45,444 INFO L87 Difference]: Start difference. First operand 1034 states and 1689 transitions. Second operand 3 states. [2018-10-24 17:19:47,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:19:47,953 INFO L93 Difference]: Finished difference Result 2929 states and 4967 transitions. [2018-10-24 17:19:47,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 17:19:47,959 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 169 [2018-10-24 17:19:47,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:19:47,982 INFO L225 Difference]: With dead ends: 2929 [2018-10-24 17:19:47,983 INFO L226 Difference]: Without dead ends: 1901 [2018-10-24 17:19:47,988 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:19:47,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1901 states. [2018-10-24 17:19:48,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1901 to 1879. [2018-10-24 17:19:48,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1879 states. [2018-10-24 17:19:48,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1879 states to 1879 states and 3071 transitions. [2018-10-24 17:19:48,070 INFO L78 Accepts]: Start accepts. Automaton has 1879 states and 3071 transitions. Word has length 169 [2018-10-24 17:19:48,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:19:48,072 INFO L481 AbstractCegarLoop]: Abstraction has 1879 states and 3071 transitions. [2018-10-24 17:19:48,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 17:19:48,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1879 states and 3071 transitions. [2018-10-24 17:19:48,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-10-24 17:19:48,078 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:19:48,079 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 17:19:48,079 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:19:48,079 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:19:48,079 INFO L82 PathProgramCache]: Analyzing trace with hash 71402321, now seen corresponding path program 1 times [2018-10-24 17:19:48,080 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:19:48,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:48,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:19:48,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:48,081 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:19:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:19:48,334 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:19:48,335 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:19:48,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-24 17:19:48,335 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:19:48,336 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 17:19:48,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 17:19:48,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 17:19:48,337 INFO L87 Difference]: Start difference. First operand 1879 states and 3071 transitions. Second operand 7 states. [2018-10-24 17:19:50,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:19:50,749 INFO L93 Difference]: Finished difference Result 5724 states and 10172 transitions. [2018-10-24 17:19:50,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 17:19:50,750 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 175 [2018-10-24 17:19:50,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:19:50,789 INFO L225 Difference]: With dead ends: 5724 [2018-10-24 17:19:50,789 INFO L226 Difference]: Without dead ends: 3851 [2018-10-24 17:19:50,799 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-10-24 17:19:50,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3851 states. [2018-10-24 17:19:51,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3851 to 3742. [2018-10-24 17:19:51,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3742 states. [2018-10-24 17:19:51,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 6337 transitions. [2018-10-24 17:19:51,100 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 6337 transitions. Word has length 175 [2018-10-24 17:19:51,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:19:51,102 INFO L481 AbstractCegarLoop]: Abstraction has 3742 states and 6337 transitions. [2018-10-24 17:19:51,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 17:19:51,103 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 6337 transitions. [2018-10-24 17:19:51,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-24 17:19:51,115 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:19:51,116 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:19:51,116 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:19:51,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:19:51,116 INFO L82 PathProgramCache]: Analyzing trace with hash -602294345, now seen corresponding path program 1 times [2018-10-24 17:19:51,117 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:19:51,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:51,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:19:51,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:51,119 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:19:51,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:19:51,308 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 17:19:51,309 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:19:51,309 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 17:19:51,310 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 185 with the following transitions: [2018-10-24 17:19:51,313 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [709], [711], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 17:19:51,412 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 17:19:51,412 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 17:23:48,592 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 17:23:48,594 INFO L272 AbstractInterpreter]: Visited 157 different actions 157 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-24 17:23:48,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:23:48,602 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown