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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label10_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 07:53:32,751 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 07:53:32,753 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 07:53:32,771 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 07:53:32,771 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 07:53:32,772 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 07:53:32,774 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 07:53:32,776 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 07:53:32,779 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 07:53:32,788 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 07:53:32,789 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 07:53:32,789 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 07:53:32,790 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 07:53:32,796 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 07:53:32,797 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 07:53:32,798 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 07:53:32,799 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 07:53:32,803 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 07:53:32,807 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 07:53:32,809 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 07:53:32,812 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 07:53:32,813 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 07:53:32,817 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 07:53:32,817 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 07:53:32,817 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 07:53:32,818 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 07:53:32,819 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 07:53:32,822 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 07:53:32,823 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 07:53:32,824 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 07:53:32,824 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 07:53:32,824 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 07:53:32,826 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 07:53:32,827 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 07:53:32,828 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 07:53:32,828 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 07:53:32,829 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 07:53:32,859 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 07:53:32,859 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 07:53:32,860 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 07:53:32,861 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 07:53:32,861 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 07:53:32,861 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 07:53:32,861 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 07:53:32,861 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 07:53:32,862 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 07:53:32,862 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 07:53:32,862 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 07:53:32,863 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 07:53:32,863 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 07:53:32,863 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 07:53:32,864 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 07:53:32,864 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 07:53:32,864 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 07:53:32,864 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 07:53:32,865 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 07:53:32,866 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 07:53:32,866 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 07:53:32,866 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 07:53:32,866 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 07:53:32,866 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 07:53:32,867 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 07:53:32,867 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 07:53:32,867 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 07:53:32,868 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 07:53:32,868 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 07:53:32,868 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 07:53:32,868 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 07:53:32,868 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 07:53:32,868 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 07:53:32,869 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 07:53:32,869 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 07:53:32,869 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 07:53:32,937 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 07:53:32,952 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 07:53:32,957 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 07:53:32,959 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 07:53:32,959 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 07:53:32,960 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label10_true-unreach-call.c [2018-10-27 07:53:33,029 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/844e80bee/4b90396ed0ca4dcf865978d298458e3a/FLAGcdc2b8004 [2018-10-27 07:53:33,880 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 07:53:33,881 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label10_true-unreach-call.c [2018-10-27 07:53:33,921 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/844e80bee/4b90396ed0ca4dcf865978d298458e3a/FLAGcdc2b8004 [2018-10-27 07:53:33,942 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/844e80bee/4b90396ed0ca4dcf865978d298458e3a [2018-10-27 07:53:33,956 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 07:53:33,958 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 07:53:33,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 07:53:33,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 07:53:33,966 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 07:53:33,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:53:33" (1/1) ... [2018-10-27 07:53:33,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73d4e6ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:53:33, skipping insertion in model container [2018-10-27 07:53:33,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:53:33" (1/1) ... [2018-10-27 07:53:33,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 07:53:34,185 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 07:53:35,708 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:53:35,713 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 07:53:36,500 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:53:36,540 INFO L193 MainTranslator]: Completed translation [2018-10-27 07:53:36,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:53:36 WrapperNode [2018-10-27 07:53:36,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 07:53:36,543 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 07:53:36,543 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 07:53:36,543 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 07:53:36,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:53:36" (1/1) ... [2018-10-27 07:53:36,654 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:53:36" (1/1) ... [2018-10-27 07:53:37,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 07:53:37,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 07:53:37,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 07:53:37,169 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 07:53:37,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:53:36" (1/1) ... [2018-10-27 07:53:37,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:53:36" (1/1) ... [2018-10-27 07:53:37,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:53:36" (1/1) ... [2018-10-27 07:53:37,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:53:36" (1/1) ... [2018-10-27 07:53:37,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:53:36" (1/1) ... [2018-10-27 07:53:37,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:53:36" (1/1) ... [2018-10-27 07:53:37,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:53:36" (1/1) ... [2018-10-27 07:53:37,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 07:53:37,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 07:53:37,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 07:53:37,579 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 07:53:37,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:53:36" (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 07:53:37,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 07:53:37,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 07:53:37,653 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 07:53:37,653 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 07:53:37,654 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 07:53:37,654 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 07:53:37,654 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 07:53:37,654 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 07:53:37,654 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 07:53:37,655 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 07:53:37,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 07:53:37,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 07:53:37,655 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 07:53:37,656 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 07:53:50,998 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 07:53:50,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:53:50 BoogieIcfgContainer [2018-10-27 07:53:50,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 07:53:51,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 07:53:51,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 07:53:51,004 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 07:53:51,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:53:33" (1/3) ... [2018-10-27 07:53:51,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30db5434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:53:51, skipping insertion in model container [2018-10-27 07:53:51,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:53:36" (2/3) ... [2018-10-27 07:53:51,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30db5434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:53:51, skipping insertion in model container [2018-10-27 07:53:51,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:53:50" (3/3) ... [2018-10-27 07:53:51,008 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label10_true-unreach-call.c [2018-10-27 07:53:51,018 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 07:53:51,029 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 07:53:51,047 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 07:53:51,109 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 07:53:51,109 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 07:53:51,110 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 07:53:51,110 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 07:53:51,110 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 07:53:51,110 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 07:53:51,110 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 07:53:51,110 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 07:53:51,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-27 07:53:51,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-27 07:53:51,167 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:53:51,168 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] [2018-10-27 07:53:51,171 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:53:51,177 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:53:51,177 INFO L82 PathProgramCache]: Analyzing trace with hash -2099536220, now seen corresponding path program 1 times [2018-10-27 07:53:51,180 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:53:51,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:53:51,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:53:51,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:53:51,231 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:53:51,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:53:51,778 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-27 07:53:51,804 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 07:53:51,807 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:53:51,807 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 07:53:51,807 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:53:51,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 07:53:51,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 07:53:51,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 07:53:51,840 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-10-27 07:54:10,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:54:10,580 INFO L93 Difference]: Finished difference Result 4105 states and 7669 transitions. [2018-10-27 07:54:10,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 07:54:10,581 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2018-10-27 07:54:10,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:54:10,629 INFO L225 Difference]: With dead ends: 4105 [2018-10-27 07:54:10,629 INFO L226 Difference]: Without dead ends: 2979 [2018-10-27 07:54:10,643 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 07:54:10,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2018-10-27 07:54:10,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2849. [2018-10-27 07:54:10,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2849 states. [2018-10-27 07:54:10,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2849 states to 2849 states and 5075 transitions. [2018-10-27 07:54:10,842 INFO L78 Accepts]: Start accepts. Automaton has 2849 states and 5075 transitions. Word has length 54 [2018-10-27 07:54:10,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:54:10,843 INFO L481 AbstractCegarLoop]: Abstraction has 2849 states and 5075 transitions. [2018-10-27 07:54:10,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 07:54:10,843 INFO L276 IsEmpty]: Start isEmpty. Operand 2849 states and 5075 transitions. [2018-10-27 07:54:10,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-27 07:54:10,852 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:54:10,853 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:54:10,853 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:54:10,853 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:54:10,854 INFO L82 PathProgramCache]: Analyzing trace with hash 5864073, now seen corresponding path program 1 times [2018-10-27 07:54:10,854 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:54:10,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:54:10,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:54:10,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:54:10,855 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:54:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:54:11,210 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:54:11,210 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:54:11,211 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:54:11,211 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:54:11,213 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:54:11,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:54:11,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:54:11,214 INFO L87 Difference]: Start difference. First operand 2849 states and 5075 transitions. Second operand 6 states. [2018-10-27 07:54:31,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:54:31,488 INFO L93 Difference]: Finished difference Result 10635 states and 19580 transitions. [2018-10-27 07:54:31,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:54:31,489 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-10-27 07:54:31,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:54:31,539 INFO L225 Difference]: With dead ends: 10635 [2018-10-27 07:54:31,539 INFO L226 Difference]: Without dead ends: 7792 [2018-10-27 07:54:31,559 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 07:54:31,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7792 states. [2018-10-27 07:54:31,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7792 to 7729. [2018-10-27 07:54:31,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7729 states. [2018-10-27 07:54:31,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7729 states to 7729 states and 12373 transitions. [2018-10-27 07:54:31,802 INFO L78 Accepts]: Start accepts. Automaton has 7729 states and 12373 transitions. Word has length 125 [2018-10-27 07:54:31,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:54:31,803 INFO L481 AbstractCegarLoop]: Abstraction has 7729 states and 12373 transitions. [2018-10-27 07:54:31,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:54:31,803 INFO L276 IsEmpty]: Start isEmpty. Operand 7729 states and 12373 transitions. [2018-10-27 07:54:31,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-27 07:54:31,813 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:54:31,813 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:54:31,814 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:54:31,814 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:54:31,814 INFO L82 PathProgramCache]: Analyzing trace with hash 652308344, now seen corresponding path program 1 times [2018-10-27 07:54:31,814 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:54:31,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:54:31,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:54:31,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:54:31,819 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:54:31,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:54:32,189 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:54:32,190 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:54:32,190 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:54:32,190 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:54:32,191 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:54:32,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:54:32,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:54:32,192 INFO L87 Difference]: Start difference. First operand 7729 states and 12373 transitions. Second operand 6 states. [2018-10-27 07:54:48,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:54:48,014 INFO L93 Difference]: Finished difference Result 20526 states and 33998 transitions. [2018-10-27 07:54:48,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:54:48,015 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2018-10-27 07:54:48,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:54:48,079 INFO L225 Difference]: With dead ends: 20526 [2018-10-27 07:54:48,079 INFO L226 Difference]: Without dead ends: 12803 [2018-10-27 07:54:48,114 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 07:54:48,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12803 states. [2018-10-27 07:54:48,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12803 to 12725. [2018-10-27 07:54:48,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12725 states. [2018-10-27 07:54:48,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12725 states to 12725 states and 19312 transitions. [2018-10-27 07:54:48,469 INFO L78 Accepts]: Start accepts. Automaton has 12725 states and 19312 transitions. Word has length 128 [2018-10-27 07:54:48,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:54:48,470 INFO L481 AbstractCegarLoop]: Abstraction has 12725 states and 19312 transitions. [2018-10-27 07:54:48,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:54:48,470 INFO L276 IsEmpty]: Start isEmpty. Operand 12725 states and 19312 transitions. [2018-10-27 07:54:48,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-27 07:54:48,486 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:54:48,486 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:54:48,487 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:54:48,487 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:54:48,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1098248393, now seen corresponding path program 1 times [2018-10-27 07:54:48,487 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:54:48,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:54:48,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:54:48,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:54:48,489 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:54:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:54:48,980 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:54:48,980 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:54:48,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 07:54:48,981 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:54:48,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 07:54:48,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 07:54:48,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 07:54:48,985 INFO L87 Difference]: Start difference. First operand 12725 states and 19312 transitions. Second operand 5 states. [2018-10-27 07:55:05,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:55:05,677 INFO L93 Difference]: Finished difference Result 38442 states and 61981 transitions. [2018-10-27 07:55:05,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 07:55:05,678 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2018-10-27 07:55:05,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:55:05,786 INFO L225 Difference]: With dead ends: 38442 [2018-10-27 07:55:05,786 INFO L226 Difference]: Without dead ends: 25723 [2018-10-27 07:55:05,828 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 07:55:05,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25723 states. [2018-10-27 07:55:06,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25723 to 25421. [2018-10-27 07:55:06,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25421 states. [2018-10-27 07:55:06,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25421 states to 25421 states and 37358 transitions. [2018-10-27 07:55:06,444 INFO L78 Accepts]: Start accepts. Automaton has 25421 states and 37358 transitions. Word has length 214 [2018-10-27 07:55:06,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:55:06,445 INFO L481 AbstractCegarLoop]: Abstraction has 25421 states and 37358 transitions. [2018-10-27 07:55:06,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 07:55:06,445 INFO L276 IsEmpty]: Start isEmpty. Operand 25421 states and 37358 transitions. [2018-10-27 07:55:06,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-10-27 07:55:06,476 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:55:06,476 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2018-10-27 07:55:06,476 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:55:06,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:55:06,477 INFO L82 PathProgramCache]: Analyzing trace with hash -426955638, now seen corresponding path program 1 times [2018-10-27 07:55:06,477 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:55:06,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:55:06,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:55:06,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:55:06,478 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:55:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:55:06,808 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:55:07,246 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 94 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 07:55:07,246 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:55:07,246 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:55:07,249 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 288 with the following transitions: [2018-10-27 07:55:07,252 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2959], [2961], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3132], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3425], [3429], [3440], [3451], [3455], [3459], [3463], [3467], [3471], [3475], [3479], [3483], [3487], [3498], [3502], [3506], [3517], [3521], [3525], [3529], [3533], [3537], [3541], [3545], [3556], [3560], [3564], [3568], [3571], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-27 07:55:07,325 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:55:07,325 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:55:08,134 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 07:55:08,136 INFO L272 AbstractInterpreter]: Visited 165 different actions 165 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-27 07:55:08,180 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:55:08,180 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 07:55:08,930 INFO L227 lantSequenceWeakener]: Weakened 278 states. On average, predicates are now at 71.28% of their original sizes. [2018-10-27 07:55:08,930 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 07:55:09,030 INFO L415 sIntCurrentIteration]: We unified 286 AI predicates to 286 [2018-10-27 07:55:09,030 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 07:55:09,031 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 07:55:09,032 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-27 07:55:09,032 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:55:09,033 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:55:09,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:55:09,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:55:09,033 INFO L87 Difference]: Start difference. First operand 25421 states and 37358 transitions. Second operand 6 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown