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-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label48_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 15:23:37,063 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 15:23:37,065 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 15:23:37,082 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 15:23:37,082 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 15:23:37,083 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 15:23:37,085 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 15:23:37,088 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 15:23:37,090 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 15:23:37,090 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 15:23:37,092 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 15:23:37,092 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 15:23:37,093 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 15:23:37,096 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 15:23:37,104 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 15:23:37,105 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 15:23:37,106 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 15:23:37,108 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 15:23:37,111 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 15:23:37,113 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 15:23:37,116 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 15:23:37,117 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 15:23:37,120 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 15:23:37,120 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 15:23:37,122 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 15:23:37,123 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 15:23:37,124 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 15:23:37,125 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 15:23:37,125 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 15:23:37,126 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 15:23:37,127 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 15:23:37,127 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 15:23:37,128 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 15:23:37,128 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 15:23:37,129 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 15:23:37,130 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 15:23:37,130 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 15:23:37,147 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 15:23:37,147 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 15:23:37,148 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 15:23:37,148 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 15:23:37,148 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 15:23:37,149 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 15:23:37,149 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 15:23:37,149 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 15:23:37,149 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 15:23:37,149 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 15:23:37,149 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 15:23:37,150 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 15:23:37,150 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 15:23:37,151 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 15:23:37,151 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 15:23:37,151 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 15:23:37,151 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 15:23:37,151 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 15:23:37,151 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 15:23:37,152 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 15:23:37,152 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 15:23:37,152 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 15:23:37,152 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 15:23:37,152 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 15:23:37,153 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 15:23:37,153 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 15:23:37,153 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 15:23:37,153 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 15:23:37,153 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 15:23:37,154 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 15:23:37,154 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 15:23:37,154 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 15:23:37,154 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 15:23:37,154 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 15:23:37,197 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 15:23:37,213 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 15:23:37,216 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 15:23:37,218 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 15:23:37,218 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 15:23:37,219 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label48_true-unreach-call.c [2018-10-27 15:23:37,291 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/570404fc1/3ab6379538c74f7ba9bc49c4c658ee14/FLAG738744bc0 [2018-10-27 15:23:38,152 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 15:23:38,153 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label48_true-unreach-call.c [2018-10-27 15:23:38,198 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/570404fc1/3ab6379538c74f7ba9bc49c4c658ee14/FLAG738744bc0 [2018-10-27 15:23:38,216 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/570404fc1/3ab6379538c74f7ba9bc49c4c658ee14 [2018-10-27 15:23:38,230 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 15:23:38,232 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 15:23:38,233 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 15:23:38,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 15:23:38,239 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 15:23:38,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:23:38" (1/1) ... [2018-10-27 15:23:38,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41d3a67d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:38, skipping insertion in model container [2018-10-27 15:23:38,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:23:38" (1/1) ... [2018-10-27 15:23:38,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 15:23:38,509 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 15:23:40,400 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 15:23:40,405 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 15:23:41,441 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 15:23:41,495 INFO L193 MainTranslator]: Completed translation [2018-10-27 15:23:41,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:41 WrapperNode [2018-10-27 15:23:41,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 15:23:41,497 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 15:23:41,497 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 15:23:41,497 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 15:23:41,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:41" (1/1) ... [2018-10-27 15:23:41,589 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:41" (1/1) ... [2018-10-27 15:23:42,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 15:23:42,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 15:23:42,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 15:23:42,192 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 15:23:42,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:41" (1/1) ... [2018-10-27 15:23:42,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:41" (1/1) ... [2018-10-27 15:23:42,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:41" (1/1) ... [2018-10-27 15:23:42,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:41" (1/1) ... [2018-10-27 15:23:42,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:41" (1/1) ... [2018-10-27 15:23:42,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:41" (1/1) ... [2018-10-27 15:23:42,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:41" (1/1) ... [2018-10-27 15:23:42,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 15:23:42,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 15:23:42,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 15:23:42,766 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 15:23:42,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:41" (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 [2018-10-27 15:23:42,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 15:23:42,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 15:23:42,839 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-27 15:23:42,839 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-27 15:23:42,839 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-27 15:23:42,839 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-27 15:23:42,840 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 15:23:42,840 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 15:23:42,840 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 15:23:42,840 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 15:23:42,840 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 15:23:42,841 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 15:23:42,841 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 15:23:42,842 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 15:23:42,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 15:23:42,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 15:23:42,842 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 15:23:42,842 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 15:24:02,803 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 15:24:02,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:24:02 BoogieIcfgContainer [2018-10-27 15:24:02,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 15:24:02,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 15:24:02,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 15:24:02,809 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 15:24:02,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:23:38" (1/3) ... [2018-10-27 15:24:02,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c9cb27e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:24:02, skipping insertion in model container [2018-10-27 15:24:02,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:41" (2/3) ... [2018-10-27 15:24:02,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c9cb27e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:24:02, skipping insertion in model container [2018-10-27 15:24:02,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:24:02" (3/3) ... [2018-10-27 15:24:02,813 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label48_true-unreach-call.c [2018-10-27 15:24:02,823 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 15:24:02,833 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 15:24:02,850 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 15:24:02,905 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 15:24:02,905 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 15:24:02,905 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 15:24:02,905 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 15:24:02,906 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 15:24:02,906 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 15:24:02,906 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 15:24:02,906 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 15:24:02,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-27 15:24:02,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-27 15:24:02,981 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:24:02,982 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:24:02,985 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:24:02,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:24:02,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1378870764, now seen corresponding path program 1 times [2018-10-27 15:24:02,994 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:24:03,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:24:03,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:24:03,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:24:03,049 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:24:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:24:03,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:24:03,604 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:24:03,604 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 15:24:03,605 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:24:03,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 15:24:03,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 15:24:03,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 15:24:03,630 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 4 states. [2018-10-27 15:24:27,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:24:27,408 INFO L93 Difference]: Finished difference Result 6465 states and 12332 transitions. [2018-10-27 15:24:27,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 15:24:27,410 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2018-10-27 15:24:27,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:24:27,470 INFO L225 Difference]: With dead ends: 6465 [2018-10-27 15:24:27,471 INFO L226 Difference]: Without dead ends: 4681 [2018-10-27 15:24:27,491 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 15:24:27,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2018-10-27 15:24:27,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 3200. [2018-10-27 15:24:27,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3200 states. [2018-10-27 15:24:27,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 5132 transitions. [2018-10-27 15:24:27,895 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 5132 transitions. Word has length 72 [2018-10-27 15:24:27,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:24:27,898 INFO L481 AbstractCegarLoop]: Abstraction has 3200 states and 5132 transitions. [2018-10-27 15:24:27,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 15:24:27,899 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 5132 transitions. [2018-10-27 15:24:27,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-27 15:24:27,911 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:24:27,911 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:24:27,911 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:24:27,913 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:24:27,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1394303167, now seen corresponding path program 1 times [2018-10-27 15:24:27,914 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:24:27,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:24:27,915 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:24:27,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:24:27,915 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:24:27,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:24:28,298 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 15:24:28,700 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:24:28,700 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:24:28,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 15:24:28,701 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:24:28,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 15:24:28,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 15:24:28,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 15:24:28,704 INFO L87 Difference]: Start difference. First operand 3200 states and 5132 transitions. Second operand 6 states. [2018-10-27 15:24:58,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:24:58,139 INFO L93 Difference]: Finished difference Result 12097 states and 19723 transitions. [2018-10-27 15:24:58,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 15:24:58,142 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2018-10-27 15:24:58,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:24:58,185 INFO L225 Difference]: With dead ends: 12097 [2018-10-27 15:24:58,186 INFO L226 Difference]: Without dead ends: 8903 [2018-10-27 15:24:58,201 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 15:24:58,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8903 states. [2018-10-27 15:24:58,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8903 to 8846. [2018-10-27 15:24:58,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8846 states. [2018-10-27 15:24:58,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8846 states to 8846 states and 12708 transitions. [2018-10-27 15:24:58,613 INFO L78 Accepts]: Start accepts. Automaton has 8846 states and 12708 transitions. Word has length 144 [2018-10-27 15:24:58,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:24:58,613 INFO L481 AbstractCegarLoop]: Abstraction has 8846 states and 12708 transitions. [2018-10-27 15:24:58,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 15:24:58,614 INFO L276 IsEmpty]: Start isEmpty. Operand 8846 states and 12708 transitions. [2018-10-27 15:24:58,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-27 15:24:58,627 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:24:58,627 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:24:58,628 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:24:58,631 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:24:58,631 INFO L82 PathProgramCache]: Analyzing trace with hash -322669480, now seen corresponding path program 1 times [2018-10-27 15:24:58,631 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:24:58,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:24:58,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:24:58,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:24:58,633 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:24:58,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:24:58,926 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 15:24:59,195 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:24:59,196 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:24:59,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 15:24:59,196 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:24:59,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 15:24:59,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 15:24:59,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 15:24:59,198 INFO L87 Difference]: Start difference. First operand 8846 states and 12708 transitions. Second operand 6 states. [2018-10-27 15:25:27,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:25:27,884 INFO L93 Difference]: Finished difference Result 29467 states and 43468 transitions. [2018-10-27 15:25:27,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 15:25:27,885 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-10-27 15:25:27,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:25:27,958 INFO L225 Difference]: With dead ends: 29467 [2018-10-27 15:25:27,959 INFO L226 Difference]: Without dead ends: 20627 [2018-10-27 15:25:27,996 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 15:25:28,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20627 states. [2018-10-27 15:25:28,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20627 to 20465. [2018-10-27 15:25:28,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20465 states. [2018-10-27 15:25:28,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20465 states to 20465 states and 28711 transitions. [2018-10-27 15:25:28,498 INFO L78 Accepts]: Start accepts. Automaton has 20465 states and 28711 transitions. Word has length 146 [2018-10-27 15:25:28,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:25:28,498 INFO L481 AbstractCegarLoop]: Abstraction has 20465 states and 28711 transitions. [2018-10-27 15:25:28,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 15:25:28,499 INFO L276 IsEmpty]: Start isEmpty. Operand 20465 states and 28711 transitions. [2018-10-27 15:25:28,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-27 15:25:28,503 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:25:28,504 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:25:28,504 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:25:28,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:25:28,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1699491839, now seen corresponding path program 1 times [2018-10-27 15:25:28,504 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:25:28,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:25:28,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:25:28,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:25:28,509 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:25:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:25:28,816 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:25:28,816 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:25:28,816 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 15:25:28,816 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:25:28,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 15:25:28,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 15:25:28,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 15:25:28,817 INFO L87 Difference]: Start difference. First operand 20465 states and 28711 transitions. Second operand 6 states. [2018-10-27 15:25:50,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:25:50,924 INFO L93 Difference]: Finished difference Result 62304 states and 89759 transitions. [2018-10-27 15:25:50,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 15:25:50,926 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2018-10-27 15:25:50,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:25:51,087 INFO L225 Difference]: With dead ends: 62304 [2018-10-27 15:25:51,087 INFO L226 Difference]: Without dead ends: 41845 [2018-10-27 15:25:51,546 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-27 15:25:51,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41845 states. [2018-10-27 15:25:52,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41845 to 41514. [2018-10-27 15:25:52,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41514 states. [2018-10-27 15:25:52,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41514 states to 41514 states and 57763 transitions. [2018-10-27 15:25:52,313 INFO L78 Accepts]: Start accepts. Automaton has 41514 states and 57763 transitions. Word has length 154 [2018-10-27 15:25:52,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:25:52,314 INFO L481 AbstractCegarLoop]: Abstraction has 41514 states and 57763 transitions. [2018-10-27 15:25:52,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 15:25:52,314 INFO L276 IsEmpty]: Start isEmpty. Operand 41514 states and 57763 transitions. [2018-10-27 15:25:52,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-27 15:25:52,320 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:25:52,320 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:25:52,320 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:25:52,320 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:25:52,321 INFO L82 PathProgramCache]: Analyzing trace with hash -666275863, now seen corresponding path program 1 times [2018-10-27 15:25:52,321 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:25:52,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:25:52,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:25:52,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:25:52,322 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:25:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:25:52,650 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:25:52,650 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:25:52,651 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 15:25:52,651 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:25:52,651 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 15:25:52,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 15:25:52,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 15:25:52,652 INFO L87 Difference]: Start difference. First operand 41514 states and 57763 transitions. Second operand 5 states. [2018-10-27 15:26:22,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:26:22,295 INFO L93 Difference]: Finished difference Result 125869 states and 180442 transitions. [2018-10-27 15:26:22,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 15:26:22,298 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2018-10-27 15:26:22,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:26:22,544 INFO L225 Difference]: With dead ends: 125869 [2018-10-27 15:26:22,545 INFO L226 Difference]: Without dead ends: 84361 [2018-10-27 15:26:22,615 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 15:26:22,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84361 states. [2018-10-27 15:26:23,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84361 to 83167. [2018-10-27 15:26:23,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83167 states. [2018-10-27 15:26:24,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83167 states to 83167 states and 107197 transitions. [2018-10-27 15:26:24,055 INFO L78 Accepts]: Start accepts. Automaton has 83167 states and 107197 transitions. Word has length 174 [2018-10-27 15:26:24,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:26:24,055 INFO L481 AbstractCegarLoop]: Abstraction has 83167 states and 107197 transitions. [2018-10-27 15:26:24,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 15:26:24,056 INFO L276 IsEmpty]: Start isEmpty. Operand 83167 states and 107197 transitions. [2018-10-27 15:26:24,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-10-27 15:26:24,064 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:26:24,064 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:26:24,064 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:26:24,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:26:24,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1062511734, now seen corresponding path program 1 times [2018-10-27 15:26:24,065 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:26:24,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:26:24,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:26:24,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:26:24,066 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:26:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:26:24,397 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 15:26:24,482 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:26:24,482 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:26:24,483 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 15:26:24,483 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:26:24,483 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 15:26:24,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 15:26:24,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 15:26:24,484 INFO L87 Difference]: Start difference. First operand 83167 states and 107197 transitions. Second operand 6 states. [2018-10-27 15:26:41,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:26:41,702 INFO L93 Difference]: Finished difference Result 188139 states and 253088 transitions. [2018-10-27 15:26:41,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 15:26:41,702 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 237 [2018-10-27 15:26:41,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:26:42,039 INFO L225 Difference]: With dead ends: 188139 [2018-10-27 15:26:42,039 INFO L226 Difference]: Without dead ends: 104978 [2018-10-27 15:26:42,144 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 [2018-10-27 15:26:42,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104978 states. [2018-10-27 15:26:43,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104978 to 104215. [2018-10-27 15:26:43,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104215 states. [2018-10-27 15:26:43,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104215 states to 104215 states and 134705 transitions. [2018-10-27 15:26:43,946 INFO L78 Accepts]: Start accepts. Automaton has 104215 states and 134705 transitions. Word has length 237 [2018-10-27 15:26:43,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:26:43,946 INFO L481 AbstractCegarLoop]: Abstraction has 104215 states and 134705 transitions. [2018-10-27 15:26:43,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 15:26:43,946 INFO L276 IsEmpty]: Start isEmpty. Operand 104215 states and 134705 transitions. [2018-10-27 15:26:43,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2018-10-27 15:26:43,965 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:26:43,965 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:26:43,965 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:26:43,966 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:26:43,966 INFO L82 PathProgramCache]: Analyzing trace with hash 771212805, now seen corresponding path program 1 times [2018-10-27 15:26:43,966 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:26:43,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:26:43,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:26:43,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:26:43,967 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:26:44,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:26:44,627 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 15:26:45,045 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-27 15:26:45,045 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:26:45,045 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:26:45,047 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 560 with the following transitions: [2018-10-27 15:26:45,050 INFO L202 CegarAbsIntRunner]: [0], [1], [4196], [4200], [4204], [4208], [4212], [4216], [4220], [4224], [4228], [4232], [4236], [4240], [4244], [4248], [4252], [4256], [4260], [4264], [4268], [4279], [4290], [4294], [4298], [4309], [4313], [4317], [4321], [4325], [4329], [4333], [4337], [4341], [4345], [4349], [4353], [4357], [4361], [4365], [4369], [4373], [4377], [4381], [4385], [4396], [4400], [4404], [4408], [4412], [4416], [4420], [4431], [4435], [4439], [4443], [4454], [4458], [4462], [4466], [4470], [4474], [4478], [4482], [4486], [4490], [4494], [4498], [4502], [4506], [4510], [4514], [4518], [4522], [4526], [4530], [4534], [4538], [4542], [4553], [4557], [4561], [4565], [4569], [4573], [4577], [4581], [4585], [4589], [4593], [4597], [4601], [4605], [4609], [4620], [4624], [4628], [4632], [4636], [4647], [4651], [4655], [4659], [4663], [4667], [4671], [4675], [4679], [4690], [4694], [4698], [4709], [4713], [4717], [4721], [4725], [4729], [4733], [4737], [4741], [4745], [4749], [4753], [4764], [4768], [4772], [4776], [4780], [4784], [4788], [4792], [4803], [4807], [4811], [4815], [4819], [4823], [4827], [4831], [4835], [4839], [4843], [4847], [4858], [4862], [4873], [4877], [4881], [4885], [4896], [4900], [4904], [4908], [4912], [4916], [4920], [4924], [4935], [4939], [4943], [4954], [4958], [4962], [4966], [4970], [4974], [4978], [4982], [4986], [4990], [4994], [4998], [5002], [5006], [5010], [5014], [5018], [5022], [5026], [5030], [5034], [5038], [5042], [5046], [5050], [5054], [5058], [5062], [5066], [5070], [5074], [5078], [5082], [5086], [5090], [5093], [5226], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5506], [5514], [5522], [5530], [5538], [5546], [5554], [5562], [5570], [5578], [5586], [5594], [5602], [5610], [5618], [5626], [5634], [5642], [5650], [5658], [5666], [5674], [5682], [5690], [5698], [5702], [5704], [5707], [5715], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5878], [5882], [5886], [5890], [5894], [5898], [5902], [5906], [5910], [5914], [5918], [5922], [5926], [5930], [5934], [5938], [5942], [5946], [5950], [5954], [5958], [5962], [5966], [5977], [5981], [5985], [5996], [6000], [6004], [6008], [6012], [6016], [6020], [6024], [6028], [6032], [6036], [6040], [6051], [6055], [6059], [6063], [6067], [6071], [6075], [6079], [6083], [6087], [6091], [6102], [6106], [6110], [6121], [6125], [6129], [6140], [6144], [6148], [6152], [6156], [6160], [6164], [6168], [6172], [6176], [6180], [6184], [6188], [6192], [6196], [6200], [6204], [6208], [6212], [6216], [6220], [6224], [6228], [6232], [6236], [6240], [6251], [6255], [6259], [6263], [6267], [6278], [6282], [6286], [6290], [6294], [6298], [6302], [6306], [6310], [6314], [6325], [6329], [6333], [6344], [6348], [6352], [6356], [6360], [6371], [6375], [6379], [6383], [6387], [6391], [6402], [6413], [6417], [6421], [6425], [6429], [6440], [6444], [6455], [6459], [6463], [6467], [6471], [6475], [6486], [6490], [6494], [6498], [6502], [6506], [6510], [6514], [6525], [6529], [6533], [6537], [6541], [6545], [6549], [6553], [6557], [6561], [6565], [6569], [6573], [6577], [6581], [6585], [6589], [6593], [6604], [6608], [6619], [6623], [6634], [6645], [6649], [6653], [6657], [6661], [6665], [6669], [6673], [6677], [6681], [6685], [6689], [6693], [6697], [6701], [6712], [6716], [6727], [6731], [6735], [6739], [6743], [6747], [6751], [6755], [6759], [6763], [6767], [6771], [6775], [6779], [6783], [6787], [6791], [6795], [6799], [6801], [6802], [6806], [6810], [6816], [6820], [6822], [6835], [6836], [6837], [6838], [6839], [6841], [6842] [2018-10-27 15:26:45,125 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 15:26:45,126 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 15:26:46,530 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 15:26:46,549 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 15:26:46,551 INFO L272 AbstractInterpreter]: Visited 488 different actions 488 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-27 15:26:46,598 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:26:46,598 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 15:26:48,422 INFO L227 lantSequenceWeakener]: Weakened 550 states. On average, predicates are now at 75.36% of their original sizes. [2018-10-27 15:26:48,423 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 15:26:49,134 INFO L415 sIntCurrentIteration]: We unified 558 AI predicates to 558 [2018-10-27 15:26:49,135 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 15:26:49,136 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 15:26:49,136 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [4] total 11 [2018-10-27 15:26:49,136 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:26:49,137 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 15:26:49,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 15:26:49,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-10-27 15:26:49,138 INFO L87 Difference]: Start difference. First operand 104215 states and 134705 transitions. Second operand 9 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown