java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label56_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 03:12:43,022 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 03:12:43,025 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 03:12:43,038 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 03:12:43,039 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 03:12:43,040 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 03:12:43,041 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 03:12:43,043 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 03:12:43,044 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 03:12:43,045 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 03:12:43,046 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 03:12:43,047 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 03:12:43,048 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 03:12:43,049 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 03:12:43,051 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 03:12:43,051 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 03:12:43,054 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 03:12:43,057 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 03:12:43,063 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 03:12:43,067 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 03:12:43,068 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 03:12:43,069 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 03:12:43,072 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 03:12:43,072 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 03:12:43,072 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 03:12:43,073 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 03:12:43,074 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 03:12:43,075 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 03:12:43,076 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 03:12:43,077 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 03:12:43,077 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 03:12:43,078 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 03:12:43,078 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 03:12:43,078 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 03:12:43,079 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 03:12:43,080 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 03:12:43,080 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 03:12:43,106 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 03:12:43,106 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 03:12:43,107 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 03:12:43,107 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 03:12:43,107 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 03:12:43,107 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 03:12:43,108 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 03:12:43,108 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 03:12:43,108 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 03:12:43,108 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 03:12:43,108 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 03:12:43,109 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 03:12:43,110 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 03:12:43,110 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 03:12:43,111 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 03:12:43,111 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 03:12:43,111 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 03:12:43,111 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 03:12:43,111 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 03:12:43,111 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 03:12:43,113 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 03:12:43,113 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 03:12:43,114 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 03:12:43,114 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 03:12:43,114 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:12:43,114 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 03:12:43,114 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 03:12:43,115 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 03:12:43,115 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 03:12:43,115 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 03:12:43,115 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 03:12:43,116 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 03:12:43,116 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 03:12:43,116 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 03:12:43,168 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 03:12:43,181 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 03:12:43,184 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 03:12:43,186 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 03:12:43,187 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 03:12:43,187 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label56_true-unreach-call.c [2018-11-07 03:12:43,248 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7423bfac5/90df47a8c59042178df4910a3b2bc6c3/FLAG90528827d [2018-11-07 03:12:44,086 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 03:12:44,087 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label56_true-unreach-call.c [2018-11-07 03:12:44,125 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7423bfac5/90df47a8c59042178df4910a3b2bc6c3/FLAG90528827d [2018-11-07 03:12:44,144 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7423bfac5/90df47a8c59042178df4910a3b2bc6c3 [2018-11-07 03:12:44,156 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 03:12:44,158 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 03:12:44,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 03:12:44,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 03:12:44,164 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 03:12:44,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:12:44" (1/1) ... [2018-11-07 03:12:44,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a7ca99b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:44, skipping insertion in model container [2018-11-07 03:12:44,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:12:44" (1/1) ... [2018-11-07 03:12:44,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 03:12:44,346 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 03:12:45,726 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:12:45,731 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 03:12:46,307 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:12:46,342 INFO L193 MainTranslator]: Completed translation [2018-11-07 03:12:46,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:46 WrapperNode [2018-11-07 03:12:46,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 03:12:46,344 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 03:12:46,344 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 03:12:46,345 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 03:12:46,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:46" (1/1) ... [2018-11-07 03:12:46,705 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:46" (1/1) ... [2018-11-07 03:12:46,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 03:12:46,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 03:12:46,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 03:12:46,717 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 03:12:46,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:46" (1/1) ... [2018-11-07 03:12:46,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:46" (1/1) ... [2018-11-07 03:12:46,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:46" (1/1) ... [2018-11-07 03:12:46,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:46" (1/1) ... [2018-11-07 03:12:46,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:46" (1/1) ... [2018-11-07 03:12:46,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:46" (1/1) ... [2018-11-07 03:12:46,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:46" (1/1) ... [2018-11-07 03:12:46,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 03:12:46,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 03:12:46,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 03:12:46,981 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 03:12:46,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:46" (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 03:12:47,050 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 03:12:47,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 03:12:47,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 03:12:47,050 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 03:12:47,050 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 03:12:47,051 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 03:12:47,051 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 03:12:47,051 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 03:12:47,051 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 03:12:47,051 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 03:12:47,052 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 03:12:47,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 03:12:47,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 03:12:47,052 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 03:12:47,053 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 03:12:56,968 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 03:12:56,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:12:56 BoogieIcfgContainer [2018-11-07 03:12:56,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 03:12:56,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 03:12:56,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 03:12:56,976 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 03:12:56,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:12:44" (1/3) ... [2018-11-07 03:12:56,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ebffeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:12:56, skipping insertion in model container [2018-11-07 03:12:56,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:46" (2/3) ... [2018-11-07 03:12:56,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ebffeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:12:56, skipping insertion in model container [2018-11-07 03:12:56,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:12:56" (3/3) ... [2018-11-07 03:12:56,980 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label56_true-unreach-call.c [2018-11-07 03:12:56,988 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 03:12:56,999 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 03:12:57,016 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 03:12:57,168 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 03:12:57,173 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 03:12:57,173 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 03:12:57,173 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 03:12:57,173 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 03:12:57,174 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 03:12:57,174 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 03:12:57,174 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 03:12:57,242 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-07 03:12:57,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-11-07 03:12:57,252 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:12:57,253 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] [2018-11-07 03:12:57,255 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:12:57,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:12:57,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1384793435, now seen corresponding path program 1 times [2018-11-07 03:12:57,264 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:12:57,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:12:57,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:12:57,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:12:57,317 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:12:57,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:12:57,781 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:12:57,936 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 03:12:57,939 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:12:57,942 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 03:12:57,942 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:12:57,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 03:12:57,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 03:12:57,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 03:12:57,994 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-11-07 03:13:04,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:13:04,962 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-11-07 03:13:04,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 03:13:04,964 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2018-11-07 03:13:04,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:13:05,015 INFO L225 Difference]: With dead ends: 2446 [2018-11-07 03:13:05,016 INFO L226 Difference]: Without dead ends: 1604 [2018-11-07 03:13:05,032 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 03:13:05,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-11-07 03:13:05,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-11-07 03:13:05,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-11-07 03:13:05,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-11-07 03:13:05,237 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 63 [2018-11-07 03:13:05,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:13:05,238 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-11-07 03:13:05,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 03:13:05,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-11-07 03:13:05,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-11-07 03:13:05,253 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:13:05,254 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 03:13:05,254 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:13:05,255 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:13:05,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1410076404, now seen corresponding path program 1 times [2018-11-07 03:13:05,256 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:13:05,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:13:05,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:13:05,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:13:05,259 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:13:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:13:05,631 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:13:05,682 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:13:05,683 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:13:05,683 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 03:13:05,683 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:13:05,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 03:13:05,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 03:13:05,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 03:13:05,686 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 5 states. [2018-11-07 03:13:15,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:13:15,337 INFO L93 Difference]: Finished difference Result 4818 states and 8826 transitions. [2018-11-07 03:13:15,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:13:15,337 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2018-11-07 03:13:15,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:13:15,360 INFO L225 Difference]: With dead ends: 4818 [2018-11-07 03:13:15,360 INFO L226 Difference]: Without dead ends: 3220 [2018-11-07 03:13:15,366 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:13:15,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2018-11-07 03:13:15,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3186. [2018-11-07 03:13:15,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3186 states. [2018-11-07 03:13:15,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 5594 transitions. [2018-11-07 03:13:15,466 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 5594 transitions. Word has length 137 [2018-11-07 03:13:15,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:13:15,467 INFO L480 AbstractCegarLoop]: Abstraction has 3186 states and 5594 transitions. [2018-11-07 03:13:15,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 03:13:15,467 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 5594 transitions. [2018-11-07 03:13:15,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-11-07 03:13:15,471 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:13:15,472 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:13:15,472 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:13:15,472 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:13:15,472 INFO L82 PathProgramCache]: Analyzing trace with hash -284658707, now seen corresponding path program 1 times [2018-11-07 03:13:15,472 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:13:15,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:13:15,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:13:15,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:13:15,474 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:13:15,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:13:15,755 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:13:15,755 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:13:15,755 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:13:15,756 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:13:15,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:13:15,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:13:15,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:13:15,757 INFO L87 Difference]: Start difference. First operand 3186 states and 5594 transitions. Second operand 6 states. [2018-11-07 03:13:27,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:13:27,836 INFO L93 Difference]: Finished difference Result 11148 states and 19850 transitions. [2018-11-07 03:13:27,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:13:27,838 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2018-11-07 03:13:27,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:13:27,891 INFO L225 Difference]: With dead ends: 11148 [2018-11-07 03:13:27,892 INFO L226 Difference]: Without dead ends: 7968 [2018-11-07 03:13:27,909 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 03:13:27,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2018-11-07 03:13:28,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 7924. [2018-11-07 03:13:28,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7924 states. [2018-11-07 03:13:28,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7924 states to 7924 states and 13424 transitions. [2018-11-07 03:13:28,183 INFO L78 Accepts]: Start accepts. Automaton has 7924 states and 13424 transitions. Word has length 142 [2018-11-07 03:13:28,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:13:28,184 INFO L480 AbstractCegarLoop]: Abstraction has 7924 states and 13424 transitions. [2018-11-07 03:13:28,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:13:28,184 INFO L276 IsEmpty]: Start isEmpty. Operand 7924 states and 13424 transitions. [2018-11-07 03:13:28,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-11-07 03:13:28,190 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:13:28,190 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:13:28,190 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:13:28,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:13:28,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1120664195, now seen corresponding path program 1 times [2018-11-07 03:13:28,191 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:13:28,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:13:28,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:13:28,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:13:28,194 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:13:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:13:28,539 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:13:28,644 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:13:28,645 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:13:28,645 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:13:28,645 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:13:28,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:13:28,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:13:28,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:13:28,647 INFO L87 Difference]: Start difference. First operand 7924 states and 13424 transitions. Second operand 6 states. [2018-11-07 03:13:38,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:13:38,284 INFO L93 Difference]: Finished difference Result 22224 states and 38004 transitions. [2018-11-07 03:13:38,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:13:38,285 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2018-11-07 03:13:38,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:13:38,368 INFO L225 Difference]: With dead ends: 22224 [2018-11-07 03:13:38,369 INFO L226 Difference]: Without dead ends: 14306 [2018-11-07 03:13:38,409 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 03:13:38,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14306 states. [2018-11-07 03:13:38,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14306 to 14219. [2018-11-07 03:13:38,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14219 states. [2018-11-07 03:13:38,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14219 states to 14219 states and 21550 transitions. [2018-11-07 03:13:38,754 INFO L78 Accepts]: Start accepts. Automaton has 14219 states and 21550 transitions. Word has length 150 [2018-11-07 03:13:38,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:13:38,754 INFO L480 AbstractCegarLoop]: Abstraction has 14219 states and 21550 transitions. [2018-11-07 03:13:38,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:13:38,755 INFO L276 IsEmpty]: Start isEmpty. Operand 14219 states and 21550 transitions. [2018-11-07 03:13:38,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-11-07 03:13:38,760 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:13:38,760 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:13:38,760 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:13:38,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:13:38,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1804914960, now seen corresponding path program 1 times [2018-11-07 03:13:38,761 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:13:38,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:13:38,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:13:38,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:13:38,762 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:13:38,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:13:39,018 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:13:39,019 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:13:39,019 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:13:39,019 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:13:39,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:13:39,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:13:39,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:13:39,020 INFO L87 Difference]: Start difference. First operand 14219 states and 21550 transitions. Second operand 6 states. [2018-11-07 03:13:53,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:13:53,678 INFO L93 Difference]: Finished difference Result 55644 states and 94207 transitions. [2018-11-07 03:13:53,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 03:13:53,678 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2018-11-07 03:13:53,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:13:53,925 INFO L225 Difference]: With dead ends: 55644 [2018-11-07 03:13:53,925 INFO L226 Difference]: Without dead ends: 41431 [2018-11-07 03:13:54,040 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 03:13:54,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41431 states. [2018-11-07 03:13:55,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41431 to 41210. [2018-11-07 03:13:55,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41210 states. [2018-11-07 03:13:55,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41210 states to 41210 states and 61798 transitions. [2018-11-07 03:13:55,682 INFO L78 Accepts]: Start accepts. Automaton has 41210 states and 61798 transitions. Word has length 167 [2018-11-07 03:13:55,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:13:55,683 INFO L480 AbstractCegarLoop]: Abstraction has 41210 states and 61798 transitions. [2018-11-07 03:13:55,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:13:55,683 INFO L276 IsEmpty]: Start isEmpty. Operand 41210 states and 61798 transitions. [2018-11-07 03:13:55,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-11-07 03:13:55,693 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:13:55,693 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:13:55,694 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:13:55,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:13:55,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1097653015, now seen corresponding path program 1 times [2018-11-07 03:13:55,695 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:13:55,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:13:55,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:13:55,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:13:55,697 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:13:55,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:13:56,009 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:13:56,411 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:13:56,411 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:13:56,413 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:13:56,413 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:13:56,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:13:56,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:13:56,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:13:56,414 INFO L87 Difference]: Start difference. First operand 41210 states and 61798 transitions. Second operand 6 states. [2018-11-07 03:14:07,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:14:07,925 INFO L93 Difference]: Finished difference Result 101423 states and 161713 transitions. [2018-11-07 03:14:07,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:14:07,932 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 188 [2018-11-07 03:14:07,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:14:08,208 INFO L225 Difference]: With dead ends: 101423 [2018-11-07 03:14:08,208 INFO L226 Difference]: Without dead ends: 60219 [2018-11-07 03:14:08,450 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 03:14:08,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60219 states. [2018-11-07 03:14:09,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60219 to 59913. [2018-11-07 03:14:09,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59913 states. [2018-11-07 03:14:09,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59913 states to 59913 states and 84294 transitions. [2018-11-07 03:14:09,873 INFO L78 Accepts]: Start accepts. Automaton has 59913 states and 84294 transitions. Word has length 188 [2018-11-07 03:14:09,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:14:09,873 INFO L480 AbstractCegarLoop]: Abstraction has 59913 states and 84294 transitions. [2018-11-07 03:14:09,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:14:09,874 INFO L276 IsEmpty]: Start isEmpty. Operand 59913 states and 84294 transitions. [2018-11-07 03:14:09,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-11-07 03:14:09,887 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:14:09,887 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:14:09,888 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:14:09,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:14:09,888 INFO L82 PathProgramCache]: Analyzing trace with hash 960313160, now seen corresponding path program 1 times [2018-11-07 03:14:09,888 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:14:09,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:14:09,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:14:09,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:14:09,890 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:14:09,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:14:10,257 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 112 proven. 74 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 03:14:10,258 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:14:10,258 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:14:10,259 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 223 with the following transitions: [2018-11-07 03:14:10,262 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2259], [2267], [2271], [2273], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2396], [2397], [2400], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 03:14:10,358 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:14:10,359 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:14:12,950 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:14:13,176 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:14:13,178 INFO L272 AbstractInterpreter]: Visited 85 different actions 85 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 03:14:13,192 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:14:13,192 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:14:15,426 INFO L227 lantSequenceWeakener]: Weakened 214 states. On average, predicates are now at 75.91% of their original sizes. [2018-11-07 03:14:15,426 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:14:15,947 INFO L415 sIntCurrentIteration]: We unified 221 AI predicates to 221 [2018-11-07 03:14:15,947 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:14:15,948 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:14:15,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-11-07 03:14:15,949 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:14:15,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 03:14:15,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 03:14:15,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:14:15,950 INFO L87 Difference]: Start difference. First operand 59913 states and 84294 transitions. Second operand 8 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown