java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label36_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:54:55,144 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:54:55,148 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:54:55,160 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:54:55,160 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:54:55,161 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:54:55,163 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:54:55,164 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:54:55,166 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:54:55,167 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:54:55,168 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:54:55,168 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:54:55,169 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:54:55,170 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:54:55,173 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:54:55,174 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:54:55,175 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:54:55,176 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:54:55,184 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:54:55,188 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:54:55,189 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:54:55,195 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:54:55,197 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:54:55,197 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:54:55,197 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:54:55,201 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:54:55,201 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:54:55,202 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:54:55,206 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:54:55,207 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:54:55,207 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:54:55,210 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:54:55,210 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:54:55,210 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:54:55,211 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:54:55,212 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:54:55,212 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 15:54:55,227 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:54:55,227 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:54:55,228 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:54:55,228 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:54:55,228 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:54:55,229 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:54:55,229 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:54:55,229 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:54:55,229 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:54:55,230 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:54:55,230 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:54:55,230 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:54:55,231 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:54:55,231 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:54:55,231 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:54:55,231 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:54:55,231 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:54:55,232 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:54:55,232 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:54:55,232 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:54:55,232 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:54:55,232 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:54:55,233 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:54:55,233 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:54:55,233 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:54:55,233 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:54:55,233 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:54:55,234 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:54:55,234 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:54:55,234 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:54:55,234 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:54:55,234 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:54:55,235 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:54:55,235 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:54:55,281 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:54:55,295 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:54:55,300 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:54:55,301 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:54:55,302 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:54:55,302 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label36_true-unreach-call.c [2018-11-07 15:54:55,367 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ade4cfda3/18088b967c5d449fb6b99fcbd56f1179/FLAG36f2a129a [2018-11-07 15:54:56,268 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:54:56,269 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label36_true-unreach-call.c [2018-11-07 15:54:56,313 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ade4cfda3/18088b967c5d449fb6b99fcbd56f1179/FLAG36f2a129a [2018-11-07 15:54:56,331 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ade4cfda3/18088b967c5d449fb6b99fcbd56f1179 [2018-11-07 15:54:56,344 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:54:56,346 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:54:56,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:54:56,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:54:56,352 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:54:56,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:54:56" (1/1) ... [2018-11-07 15:54:56,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bbdaad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:56, skipping insertion in model container [2018-11-07 15:54:56,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:54:56" (1/1) ... [2018-11-07 15:54:56,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:54:56,608 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:54:58,652 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:54:58,657 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:54:59,748 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:54:59,803 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:54:59,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:59 WrapperNode [2018-11-07 15:54:59,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:54:59,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:54:59,805 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:54:59,805 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:54:59,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:59" (1/1) ... [2018-11-07 15:55:00,284 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:59" (1/1) ... [2018-11-07 15:55:00,296 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:55:00,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:55:00,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:55:00,297 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:55:00,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:59" (1/1) ... [2018-11-07 15:55:00,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:59" (1/1) ... [2018-11-07 15:55:00,332 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:59" (1/1) ... [2018-11-07 15:55:00,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:59" (1/1) ... [2018-11-07 15:55:00,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:59" (1/1) ... [2018-11-07 15:55:00,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:59" (1/1) ... [2018-11-07 15:55:00,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:59" (1/1) ... [2018-11-07 15:55:00,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:55:00,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:55:00,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:55:00,707 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:55:00,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:55:00,778 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:55:00,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:55:00,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:55:00,779 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-07 15:55:00,779 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-07 15:55:00,779 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-07 15:55:00,779 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-07 15:55:00,779 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 15:55:00,780 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 15:55:00,780 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 15:55:00,780 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 15:55:00,780 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:55:00,780 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:55:00,782 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:55:00,782 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:55:00,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:55:00,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:55:00,782 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:55:00,783 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:55:15,771 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:55:15,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:55:15 BoogieIcfgContainer [2018-11-07 15:55:15,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:55:15,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:55:15,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:55:15,777 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:55:15,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:54:56" (1/3) ... [2018-11-07 15:55:15,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@132d8da5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:55:15, skipping insertion in model container [2018-11-07 15:55:15,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:59" (2/3) ... [2018-11-07 15:55:15,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@132d8da5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:55:15, skipping insertion in model container [2018-11-07 15:55:15,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:55:15" (3/3) ... [2018-11-07 15:55:15,785 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label36_true-unreach-call.c [2018-11-07 15:55:15,795 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:55:15,808 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:55:15,824 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:55:15,878 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:55:15,878 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:55:15,878 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:55:15,878 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:55:15,878 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:55:15,879 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:55:15,879 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:55:15,879 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:55:15,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-07 15:55:15,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-07 15:55:15,939 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:55:15,941 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] [2018-11-07 15:55:15,943 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:55:15,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:55:15,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1662781076, now seen corresponding path program 1 times [2018-11-07 15:55:15,950 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:55:16,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:55:16,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:55:16,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:55:16,005 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:55:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:55:16,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:55:16,487 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:55:16,487 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 15:55:16,487 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:55:16,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 15:55:16,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 15:55:16,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:55:16,514 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-11-07 15:55:30,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:55:30,231 INFO L93 Difference]: Finished difference Result 4999 states and 9420 transitions. [2018-11-07 15:55:30,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 15:55:30,234 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2018-11-07 15:55:30,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:55:30,282 INFO L225 Difference]: With dead ends: 4999 [2018-11-07 15:55:30,282 INFO L226 Difference]: Without dead ends: 3219 [2018-11-07 15:55:30,295 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 15:55:30,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2018-11-07 15:55:30,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3215. [2018-11-07 15:55:30,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-11-07 15:55:30,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5845 transitions. [2018-11-07 15:55:30,511 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5845 transitions. Word has length 40 [2018-11-07 15:55:30,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:55:30,512 INFO L480 AbstractCegarLoop]: Abstraction has 3215 states and 5845 transitions. [2018-11-07 15:55:30,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 15:55:30,512 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5845 transitions. [2018-11-07 15:55:30,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-11-07 15:55:30,519 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:55:30,521 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:55:30,521 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:55:30,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:55:30,522 INFO L82 PathProgramCache]: Analyzing trace with hash -997001405, now seen corresponding path program 1 times [2018-11-07 15:55:30,522 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:55:30,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:55:30,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:55:30,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:55:30,525 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:55:30,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:55:30,913 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:55:31,273 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:55:31,273 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:55:31,273 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:55:31,274 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:55:31,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:55:31,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:55:31,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:55:31,278 INFO L87 Difference]: Start difference. First operand 3215 states and 5845 transitions. Second operand 6 states. [2018-11-07 15:55:53,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:55:53,288 INFO L93 Difference]: Finished difference Result 9331 states and 16910 transitions. [2018-11-07 15:55:53,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:55:53,293 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-11-07 15:55:53,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:55:53,334 INFO L225 Difference]: With dead ends: 9331 [2018-11-07 15:55:53,335 INFO L226 Difference]: Without dead ends: 6122 [2018-11-07 15:55:53,348 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 15:55:53,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6122 states. [2018-11-07 15:55:53,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6122 to 6084. [2018-11-07 15:55:53,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6084 states. [2018-11-07 15:55:53,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6084 states to 6084 states and 9616 transitions. [2018-11-07 15:55:53,506 INFO L78 Accepts]: Start accepts. Automaton has 6084 states and 9616 transitions. Word has length 112 [2018-11-07 15:55:53,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:55:53,507 INFO L480 AbstractCegarLoop]: Abstraction has 6084 states and 9616 transitions. [2018-11-07 15:55:53,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:55:53,507 INFO L276 IsEmpty]: Start isEmpty. Operand 6084 states and 9616 transitions. [2018-11-07 15:55:53,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-11-07 15:55:53,512 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:55:53,512 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:55:53,512 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:55:53,512 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:55:53,513 INFO L82 PathProgramCache]: Analyzing trace with hash -2068825087, now seen corresponding path program 1 times [2018-11-07 15:55:53,513 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:55:53,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:55:53,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:55:53,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:55:53,514 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:55:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:55:53,752 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:55:53,752 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:55:53,752 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:55:53,752 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:55:53,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:55:53,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:55:53,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:55:53,754 INFO L87 Difference]: Start difference. First operand 6084 states and 9616 transitions. Second operand 6 states. [2018-11-07 15:56:21,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:56:21,398 INFO L93 Difference]: Finished difference Result 24232 states and 39679 transitions. [2018-11-07 15:56:21,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 15:56:21,399 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2018-11-07 15:56:21,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:56:21,488 INFO L225 Difference]: With dead ends: 24232 [2018-11-07 15:56:21,488 INFO L226 Difference]: Without dead ends: 18154 [2018-11-07 15:56:21,526 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 15:56:21,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18154 states. [2018-11-07 15:56:21,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18154 to 18078. [2018-11-07 15:56:21,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18078 states. [2018-11-07 15:56:22,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18078 states to 18078 states and 25605 transitions. [2018-11-07 15:56:22,005 INFO L78 Accepts]: Start accepts. Automaton has 18078 states and 25605 transitions. Word has length 130 [2018-11-07 15:56:22,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:56:22,006 INFO L480 AbstractCegarLoop]: Abstraction has 18078 states and 25605 transitions. [2018-11-07 15:56:22,006 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:56:22,006 INFO L276 IsEmpty]: Start isEmpty. Operand 18078 states and 25605 transitions. [2018-11-07 15:56:22,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-11-07 15:56:22,016 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:56:22,017 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:56:22,017 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:56:22,017 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:56:22,017 INFO L82 PathProgramCache]: Analyzing trace with hash -162888064, now seen corresponding path program 1 times [2018-11-07 15:56:22,017 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:56:22,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:56:22,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:56:22,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:56:22,019 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:56:22,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:56:22,307 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:56:22,307 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:56:22,308 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 15:56:22,308 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:56:22,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 15:56:22,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 15:56:22,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 15:56:22,309 INFO L87 Difference]: Start difference. First operand 18078 states and 25605 transitions. Second operand 5 states. [2018-11-07 15:56:37,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:56:37,984 INFO L93 Difference]: Finished difference Result 56174 states and 84459 transitions. [2018-11-07 15:56:37,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 15:56:37,984 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2018-11-07 15:56:37,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:56:38,140 INFO L225 Difference]: With dead ends: 56174 [2018-11-07 15:56:38,141 INFO L226 Difference]: Without dead ends: 38102 [2018-11-07 15:56:38,218 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 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 15:56:38,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38102 states. [2018-11-07 15:56:39,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38102 to 36927. [2018-11-07 15:56:39,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36927 states. [2018-11-07 15:56:39,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36927 states to 36927 states and 49675 transitions. [2018-11-07 15:56:39,181 INFO L78 Accepts]: Start accepts. Automaton has 36927 states and 49675 transitions. Word has length 175 [2018-11-07 15:56:39,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:56:39,182 INFO L480 AbstractCegarLoop]: Abstraction has 36927 states and 49675 transitions. [2018-11-07 15:56:39,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 15:56:39,182 INFO L276 IsEmpty]: Start isEmpty. Operand 36927 states and 49675 transitions. [2018-11-07 15:56:39,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-11-07 15:56:39,190 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:56:39,190 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 15:56:39,191 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:56:39,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:56:39,191 INFO L82 PathProgramCache]: Analyzing trace with hash 573942238, now seen corresponding path program 1 times [2018-11-07 15:56:39,191 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:56:39,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:56:39,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:56:39,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:56:39,196 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:56:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:56:39,709 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 66 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 15:56:39,710 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:56:39,710 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:56:39,711 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 196 with the following transitions: [2018-11-07 15:56:39,714 INFO L202 CegarAbsIntRunner]: [0], [1], [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], [5446], [5448], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5745], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5781], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 15:56:39,783 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:56:39,783 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:56:40,302 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:56:40,303 INFO L272 AbstractInterpreter]: Visited 87 different actions 87 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 15:56:40,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:56:40,346 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 15:56:41,162 INFO L227 lantSequenceWeakener]: Weakened 186 states. On average, predicates are now at 75.4% of their original sizes. [2018-11-07 15:56:41,162 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 15:56:41,498 INFO L415 sIntCurrentIteration]: We unified 194 AI predicates to 194 [2018-11-07 15:56:41,499 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 15:56:41,500 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:56:41,500 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 15:56:41,500 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:56:41,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 15:56:41,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 15:56:41,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 15:56:41,501 INFO L87 Difference]: Start difference. First operand 36927 states and 49675 transitions. Second operand 7 states. [2018-11-07 15:56:49,271 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown