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/Problem03_label46_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 12:32:53,749 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 12:32:53,753 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 12:32:53,765 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 12:32:53,766 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 12:32:53,767 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 12:32:53,768 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 12:32:53,771 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 12:32:53,772 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 12:32:53,774 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 12:32:53,775 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 12:32:53,775 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 12:32:53,776 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 12:32:53,777 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 12:32:53,778 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 12:32:53,779 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 12:32:53,780 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 12:32:53,781 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 12:32:53,783 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 12:32:53,785 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 12:32:53,786 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 12:32:53,787 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 12:32:53,790 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 12:32:53,790 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 12:32:53,790 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 12:32:53,791 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 12:32:53,792 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 12:32:53,793 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 12:32:53,794 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 12:32:53,795 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 12:32:53,795 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 12:32:53,796 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-27 12:32:53,798 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 12:32:53,814 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 12:32:53,814 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 12:32:53,815 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 12:32:53,815 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 12:32:53,815 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 12:32:53,816 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 12:32:53,816 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 12:32:53,816 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 12:32:53,816 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 12:32:53,816 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 12:32:53,817 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 12:32:53,817 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 12:32:53,817 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 12:32:53,818 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 12:32:53,818 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 12:32:53,818 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 12:32:53,818 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 12:32:53,818 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 12:32:53,818 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 12:32:53,819 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 12:32:53,819 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 12:32:53,819 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 12:32:53,819 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 12:32:53,819 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 12:32:53,820 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 12:32:53,820 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 12:32:53,820 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 12:32:53,820 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 12:32:53,820 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 12:32:53,821 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 12:32:53,821 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 12:32:53,821 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 12:32:53,821 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 12:32:53,821 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 12:32:53,865 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 12:32:53,883 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 12:32:53,888 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 12:32:53,890 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 12:32:53,890 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 12:32:53,891 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label46_true-unreach-call.c [2018-10-27 12:32:53,966 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/670638280/27b99db30044440fb4d12fa57c4db48d/FLAG38116fe50 [2018-10-27 12:32:54,638 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 12:32:54,639 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label46_true-unreach-call.c [2018-10-27 12:32:54,660 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/670638280/27b99db30044440fb4d12fa57c4db48d/FLAG38116fe50 [2018-10-27 12:32:54,682 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/670638280/27b99db30044440fb4d12fa57c4db48d [2018-10-27 12:32:54,695 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 12:32:54,697 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 12:32:54,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 12:32:54,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 12:32:54,707 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 12:32:54,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:32:54" (1/1) ... [2018-10-27 12:32:54,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cfbb384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:54, skipping insertion in model container [2018-10-27 12:32:54,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:32:54" (1/1) ... [2018-10-27 12:32:54,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 12:32:54,827 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 12:32:55,597 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 12:32:55,602 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 12:32:55,910 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 12:32:55,932 INFO L193 MainTranslator]: Completed translation [2018-10-27 12:32:55,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:55 WrapperNode [2018-10-27 12:32:55,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 12:32:55,934 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 12:32:55,934 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 12:32:55,934 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 12:32:55,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:55" (1/1) ... [2018-10-27 12:32:55,980 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:55" (1/1) ... [2018-10-27 12:32:56,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 12:32:56,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 12:32:56,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 12:32:56,225 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 12:32:56,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:55" (1/1) ... [2018-10-27 12:32:56,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:55" (1/1) ... [2018-10-27 12:32:56,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:55" (1/1) ... [2018-10-27 12:32:56,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:55" (1/1) ... [2018-10-27 12:32:56,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:55" (1/1) ... [2018-10-27 12:32:56,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:55" (1/1) ... [2018-10-27 12:32:56,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:55" (1/1) ... [2018-10-27 12:32:56,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 12:32:56,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 12:32:56,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 12:32:56,369 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 12:32:56,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:55" (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 12:32:56,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 12:32:56,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 12:32:56,436 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 12:32:56,436 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 12:32:56,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 12:32:56,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 12:32:56,437 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 12:32:56,437 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 12:33:01,235 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 12:33:01,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:33:01 BoogieIcfgContainer [2018-10-27 12:33:01,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 12:33:01,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 12:33:01,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 12:33:01,242 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 12:33:01,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:32:54" (1/3) ... [2018-10-27 12:33:01,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ed6d6fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:33:01, skipping insertion in model container [2018-10-27 12:33:01,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:55" (2/3) ... [2018-10-27 12:33:01,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ed6d6fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:33:01, skipping insertion in model container [2018-10-27 12:33:01,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:33:01" (3/3) ... [2018-10-27 12:33:01,247 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label46_true-unreach-call.c [2018-10-27 12:33:01,257 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 12:33:01,267 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 12:33:01,286 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 12:33:01,326 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 12:33:01,327 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 12:33:01,327 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 12:33:01,327 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 12:33:01,327 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 12:33:01,327 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 12:33:01,328 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 12:33:01,328 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 12:33:01,363 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-27 12:33:01,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-27 12:33:01,383 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:33:01,385 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:33:01,387 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:33:01,393 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:33:01,393 INFO L82 PathProgramCache]: Analyzing trace with hash -869298807, now seen corresponding path program 1 times [2018-10-27 12:33:01,396 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:33:01,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:33:01,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:33:01,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:33:01,451 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:33:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:33:02,784 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 12:33:02,787 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 12:33:02,788 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 12:33:02,788 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:33:02,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 12:33:02,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 12:33:02,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 12:33:02,808 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-10-27 12:33:06,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:33:06,710 INFO L93 Difference]: Finished difference Result 1074 states and 1924 transitions. [2018-10-27 12:33:06,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 12:33:06,713 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 192 [2018-10-27 12:33:06,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:33:06,739 INFO L225 Difference]: With dead ends: 1074 [2018-10-27 12:33:06,739 INFO L226 Difference]: Without dead ends: 756 [2018-10-27 12:33:06,746 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 12:33:06,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2018-10-27 12:33:06,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 520. [2018-10-27 12:33:06,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2018-10-27 12:33:06,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 919 transitions. [2018-10-27 12:33:06,836 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 919 transitions. Word has length 192 [2018-10-27 12:33:06,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:33:06,837 INFO L481 AbstractCegarLoop]: Abstraction has 520 states and 919 transitions. [2018-10-27 12:33:06,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 12:33:06,837 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 919 transitions. [2018-10-27 12:33:06,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-27 12:33:06,847 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:33:06,847 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:33:06,848 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:33:06,850 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:33:06,850 INFO L82 PathProgramCache]: Analyzing trace with hash -593828404, now seen corresponding path program 1 times [2018-10-27 12:33:06,850 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:33:06,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:33:06,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:33:06,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:33:06,851 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:33:06,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:33:07,210 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 12:33:07,383 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:33:07,384 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 12:33:07,384 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 12:33:07,384 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:33:07,386 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 12:33:07,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 12:33:07,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 12:33:07,387 INFO L87 Difference]: Start difference. First operand 520 states and 919 transitions. Second operand 6 states. [2018-10-27 12:33:11,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:33:11,843 INFO L93 Difference]: Finished difference Result 1482 states and 2700 transitions. [2018-10-27 12:33:11,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 12:33:11,844 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 220 [2018-10-27 12:33:11,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:33:11,860 INFO L225 Difference]: With dead ends: 1482 [2018-10-27 12:33:11,860 INFO L226 Difference]: Without dead ends: 968 [2018-10-27 12:33:11,863 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 12:33:11,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2018-10-27 12:33:11,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 949. [2018-10-27 12:33:11,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 949 states. [2018-10-27 12:33:11,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1579 transitions. [2018-10-27 12:33:11,936 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1579 transitions. Word has length 220 [2018-10-27 12:33:11,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:33:11,936 INFO L481 AbstractCegarLoop]: Abstraction has 949 states and 1579 transitions. [2018-10-27 12:33:11,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 12:33:11,937 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1579 transitions. [2018-10-27 12:33:11,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-27 12:33:11,943 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:33:11,943 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:33:11,943 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:33:11,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:33:11,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1738232703, now seen corresponding path program 1 times [2018-10-27 12:33:11,944 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:33:11,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:33:11,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:33:11,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:33:11,945 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:33:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:33:12,351 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:33:12,352 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 12:33:12,352 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 12:33:12,352 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:33:12,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 12:33:12,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 12:33:12,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 12:33:12,354 INFO L87 Difference]: Start difference. First operand 949 states and 1579 transitions. Second operand 3 states. [2018-10-27 12:33:14,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:33:14,906 INFO L93 Difference]: Finished difference Result 2535 states and 4260 transitions. [2018-10-27 12:33:14,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 12:33:14,911 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 238 [2018-10-27 12:33:14,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:33:14,924 INFO L225 Difference]: With dead ends: 2535 [2018-10-27 12:33:14,924 INFO L226 Difference]: Without dead ends: 1592 [2018-10-27 12:33:14,933 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 12:33:14,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2018-10-27 12:33:14,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1590. [2018-10-27 12:33:15,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2018-10-27 12:33:15,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 2503 transitions. [2018-10-27 12:33:15,009 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 2503 transitions. Word has length 238 [2018-10-27 12:33:15,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:33:15,010 INFO L481 AbstractCegarLoop]: Abstraction has 1590 states and 2503 transitions. [2018-10-27 12:33:15,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 12:33:15,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 2503 transitions. [2018-10-27 12:33:15,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-10-27 12:33:15,020 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:33:15,020 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:33:15,021 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:33:15,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:33:15,021 INFO L82 PathProgramCache]: Analyzing trace with hash -2088350806, now seen corresponding path program 1 times [2018-10-27 12:33:15,021 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:33:15,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:33:15,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:33:15,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:33:15,023 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:33:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:33:15,321 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 12:33:15,459 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 54 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 12:33:15,459 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:33:15,459 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:33:15,460 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 255 with the following transitions: [2018-10-27 12:33:15,463 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [68], [71], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [131], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [997], [999], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:33:15,539 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:33:15,540 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:33:16,770 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 12:33:16,771 INFO L272 AbstractInterpreter]: Visited 193 different actions 193 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-27 12:33:16,815 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:33:16,815 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 12:33:17,968 INFO L227 lantSequenceWeakener]: Weakened 243 states. On average, predicates are now at 73.21% of their original sizes. [2018-10-27 12:33:17,969 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 12:33:19,543 INFO L415 sIntCurrentIteration]: We unified 253 AI predicates to 253 [2018-10-27 12:33:19,544 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 12:33:19,544 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 12:33:19,545 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-10-27 12:33:19,545 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:33:19,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-27 12:33:19,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-27 12:33:19,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2018-10-27 12:33:19,546 INFO L87 Difference]: Start difference. First operand 1590 states and 2503 transitions. Second operand 17 states. [2018-10-27 12:33:51,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:33:51,747 INFO L93 Difference]: Finished difference Result 3384 states and 5321 transitions. [2018-10-27 12:33:51,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 12:33:51,747 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 254 [2018-10-27 12:33:51,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:33:51,756 INFO L225 Difference]: With dead ends: 3384 [2018-10-27 12:33:51,757 INFO L226 Difference]: Without dead ends: 1800 [2018-10-27 12:33:51,762 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 256 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2018-10-27 12:33:51,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1800 states. [2018-10-27 12:33:51,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1800 to 1798. [2018-10-27 12:33:51,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1798 states. [2018-10-27 12:33:51,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2720 transitions. [2018-10-27 12:33:51,816 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2720 transitions. Word has length 254 [2018-10-27 12:33:51,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:33:51,817 INFO L481 AbstractCegarLoop]: Abstraction has 1798 states and 2720 transitions. [2018-10-27 12:33:51,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-27 12:33:51,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2720 transitions. [2018-10-27 12:33:51,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-10-27 12:33:51,827 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:33:51,827 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:33:51,827 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:33:51,828 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:33:51,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1932152211, now seen corresponding path program 1 times [2018-10-27 12:33:51,828 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:33:51,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:33:51,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:33:51,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:33:51,830 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:33:51,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:33:52,135 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 12:33:52,508 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 69 proven. 27 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-27 12:33:52,508 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:33:52,509 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:33:52,509 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 267 with the following transitions: [2018-10-27 12:33:52,510 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [68], [71], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [131], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [997], [999], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:33:52,523 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:33:52,524 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:33:54,096 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 12:33:54,097 INFO L272 AbstractInterpreter]: Visited 197 different actions 390 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 12:33:54,130 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:33:54,130 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 12:33:55,855 INFO L227 lantSequenceWeakener]: Weakened 78 states. On average, predicates are now at 81.56% of their original sizes. [2018-10-27 12:33:55,855 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 12:34:00,363 INFO L415 sIntCurrentIteration]: We unified 265 AI predicates to 265 [2018-10-27 12:34:00,364 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 12:34:00,364 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 12:34:00,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [6] total 28 [2018-10-27 12:34:00,365 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:34:00,366 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-27 12:34:00,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-27 12:34:00,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2018-10-27 12:34:00,367 INFO L87 Difference]: Start difference. First operand 1798 states and 2720 transitions. Second operand 24 states. [2018-10-27 12:34:36,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:34:36,648 INFO L93 Difference]: Finished difference Result 4013 states and 6084 transitions. [2018-10-27 12:34:36,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-27 12:34:36,649 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 266 [2018-10-27 12:34:36,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:34:36,660 INFO L225 Difference]: With dead ends: 4013 [2018-10-27 12:34:36,661 INFO L226 Difference]: Without dead ends: 2429 [2018-10-27 12:34:36,667 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 276 GetRequests, 210 SyntacticMatches, 33 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=246, Invalid=944, Unknown=0, NotChecked=0, Total=1190 [2018-10-27 12:34:36,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2018-10-27 12:34:36,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 2426. [2018-10-27 12:34:36,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2426 states. [2018-10-27 12:34:36,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2426 states to 2426 states and 3396 transitions. [2018-10-27 12:34:36,731 INFO L78 Accepts]: Start accepts. Automaton has 2426 states and 3396 transitions. Word has length 266 [2018-10-27 12:34:36,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:34:36,731 INFO L481 AbstractCegarLoop]: Abstraction has 2426 states and 3396 transitions. [2018-10-27 12:34:36,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-27 12:34:36,732 INFO L276 IsEmpty]: Start isEmpty. Operand 2426 states and 3396 transitions. [2018-10-27 12:34:36,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-10-27 12:34:36,742 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:34:36,742 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2018-10-27 12:34:36,742 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:34:36,743 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:34:36,743 INFO L82 PathProgramCache]: Analyzing trace with hash -358752647, now seen corresponding path program 1 times [2018-10-27 12:34:36,743 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:34:36,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:34:36,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:34:36,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:34:36,744 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:34:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:34:37,242 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 98 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-27 12:34:37,244 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:34:37,244 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:34:37,244 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 277 with the following transitions: [2018-10-27 12:34:37,245 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [68], [71], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [131], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [997], [999], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:34:37,257 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:34:37,263 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:34:38,823 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 12:34:38,824 INFO L272 AbstractInterpreter]: Visited 197 different actions 387 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 12:34:38,830 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:34:38,830 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 12:34:39,629 INFO L227 lantSequenceWeakener]: Weakened 271 states. On average, predicates are now at 72.89% of their original sizes. [2018-10-27 12:34:39,629 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 12:34:39,942 INFO L415 sIntCurrentIteration]: We unified 275 AI predicates to 275 [2018-10-27 12:34:39,942 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 12:34:39,943 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 12:34:39,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-10-27 12:34:39,943 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:34:39,943 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-27 12:34:39,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-27 12:34:39,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-10-27 12:34:39,944 INFO L87 Difference]: Start difference. First operand 2426 states and 3396 transitions. Second operand 19 states. [2018-10-27 12:35:21,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:35:21,553 INFO L93 Difference]: Finished difference Result 5300 states and 7745 transitions. [2018-10-27 12:35:21,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-27 12:35:21,554 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 276 [2018-10-27 12:35:21,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:35:21,573 INFO L225 Difference]: With dead ends: 5300 [2018-10-27 12:35:21,574 INFO L226 Difference]: Without dead ends: 3716 [2018-10-27 12:35:21,581 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 284 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=167, Invalid=589, Unknown=0, NotChecked=0, Total=756 [2018-10-27 12:35:21,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3716 states. [2018-10-27 12:35:21,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3716 to 3714. [2018-10-27 12:35:21,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3714 states. [2018-10-27 12:35:21,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3714 states to 3714 states and 4892 transitions. [2018-10-27 12:35:21,680 INFO L78 Accepts]: Start accepts. Automaton has 3714 states and 4892 transitions. Word has length 276 [2018-10-27 12:35:21,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:35:21,682 INFO L481 AbstractCegarLoop]: Abstraction has 3714 states and 4892 transitions. [2018-10-27 12:35:21,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-27 12:35:21,682 INFO L276 IsEmpty]: Start isEmpty. Operand 3714 states and 4892 transitions. [2018-10-27 12:35:21,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-10-27 12:35:21,695 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:35:21,696 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:35:21,696 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:35:21,696 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:35:21,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1908375566, now seen corresponding path program 1 times [2018-10-27 12:35:21,697 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:35:21,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:35:21,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:35:21,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:35:21,698 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:35:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:35:22,325 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 112 proven. 91 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 12:35:22,326 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:35:22,326 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:35:22,326 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 305 with the following transitions: [2018-10-27 12:35:22,326 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [127], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [174], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [997], [999], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:35:22,331 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:35:22,332 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:35:24,037 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 12:35:24,037 INFO L272 AbstractInterpreter]: Visited 199 different actions 594 times. Merged at 7 different actions 21 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-27 12:35:24,045 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:35:24,046 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 12:35:24,046 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:35:24,046 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 12:35:24,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:35:24,055 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 12:35:24,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:35:24,338 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 12:35:24,776 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-10-27 12:35:24,777 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 12:35:25,336 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-10-27 12:35:25,358 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 12:35:25,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 17 [2018-10-27 12:35:25,359 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 12:35:25,364 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-27 12:35:25,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-27 12:35:25,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2018-10-27 12:35:25,365 INFO L87 Difference]: Start difference. First operand 3714 states and 4892 transitions. Second operand 16 states. [2018-10-27 12:35:54,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:35:54,155 INFO L93 Difference]: Finished difference Result 26407 states and 47246 transitions. [2018-10-27 12:35:54,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-10-27 12:35:54,156 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 304 [2018-10-27 12:35:54,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:35:54,356 INFO L225 Difference]: With dead ends: 26407 [2018-10-27 12:35:54,357 INFO L226 Difference]: Without dead ends: 23535 [2018-10-27 12:35:54,475 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 820 GetRequests, 686 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6830 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=3010, Invalid=15350, Unknown=0, NotChecked=0, Total=18360 [2018-10-27 12:35:54,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23535 states. [2018-10-27 12:35:55,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23535 to 22943. [2018-10-27 12:35:55,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22943 states. [2018-10-27 12:35:55,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22943 states to 22943 states and 33776 transitions. [2018-10-27 12:35:55,565 INFO L78 Accepts]: Start accepts. Automaton has 22943 states and 33776 transitions. Word has length 304 [2018-10-27 12:35:55,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:35:55,565 INFO L481 AbstractCegarLoop]: Abstraction has 22943 states and 33776 transitions. [2018-10-27 12:35:55,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-27 12:35:55,565 INFO L276 IsEmpty]: Start isEmpty. Operand 22943 states and 33776 transitions. [2018-10-27 12:35:55,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-10-27 12:35:55,687 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:35:55,687 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:35:55,688 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:35:55,688 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:35:55,688 INFO L82 PathProgramCache]: Analyzing trace with hash 679864284, now seen corresponding path program 1 times [2018-10-27 12:35:55,688 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:35:55,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:35:55,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:35:55,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:35:55,689 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:35:55,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:35:56,781 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 12:35:57,174 WARN L179 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-27 12:35:57,397 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 180 proven. 68 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-27 12:35:57,398 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:35:57,398 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:35:57,398 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 332 with the following transitions: [2018-10-27 12:35:57,398 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [28], [29], [33], [37], [41], [44], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [139], [140], [144], [148], [159], [163], [167], [171], [174], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [997], [999], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:35:57,402 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:35:57,403 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:36:00,170 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 12:36:00,170 INFO L272 AbstractInterpreter]: Visited 200 different actions 596 times. Merged at 7 different actions 20 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-27 12:36:00,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:36:00,176 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 12:36:00,176 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:36:00,176 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 12:36:00,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:36:00,184 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 12:36:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:36:00,482 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 12:36:00,817 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2018-10-27 12:36:00,818 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 12:36:01,089 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 191 proven. 20 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2018-10-27 12:36:01,123 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 12:36:01,123 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 16 [2018-10-27 12:36:01,123 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 12:36:01,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-27 12:36:01,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-27 12:36:01,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-10-27 12:36:01,125 INFO L87 Difference]: Start difference. First operand 22943 states and 33776 transitions. Second operand 14 states. [2018-10-27 12:36:03,580 WARN L179 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 16 [2018-10-27 12:36:08,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:36:08,779 INFO L93 Difference]: Finished difference Result 87743 states and 154367 transitions. [2018-10-27 12:36:08,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-27 12:36:08,780 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 331 [2018-10-27 12:36:08,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:36:09,379 INFO L225 Difference]: With dead ends: 87743 [2018-10-27 12:36:09,379 INFO L226 Difference]: Without dead ends: 66273 [2018-10-27 12:36:09,534 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 713 GetRequests, 677 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=320, Invalid=1012, Unknown=0, NotChecked=0, Total=1332 [2018-10-27 12:36:09,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66273 states. [2018-10-27 12:36:12,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66273 to 62329. [2018-10-27 12:36:12,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62329 states. [2018-10-27 12:36:12,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62329 states to 62329 states and 91282 transitions. [2018-10-27 12:36:12,483 INFO L78 Accepts]: Start accepts. Automaton has 62329 states and 91282 transitions. Word has length 331 [2018-10-27 12:36:12,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:36:12,483 INFO L481 AbstractCegarLoop]: Abstraction has 62329 states and 91282 transitions. [2018-10-27 12:36:12,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-27 12:36:12,484 INFO L276 IsEmpty]: Start isEmpty. Operand 62329 states and 91282 transitions. [2018-10-27 12:36:12,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-10-27 12:36:12,615 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:36:12,615 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-10-27 12:36:12,615 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:36:12,616 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:36:12,616 INFO L82 PathProgramCache]: Analyzing trace with hash -518222353, now seen corresponding path program 1 times [2018-10-27 12:36:12,616 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:36:12,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:36:12,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:36:12,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:36:12,618 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:36:12,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:36:13,229 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 199 proven. 83 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-10-27 12:36:13,229 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:36:13,229 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:36:13,229 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 354 with the following transitions: [2018-10-27 12:36:13,230 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [139], [140], [144], [148], [159], [163], [167], [171], [174], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [997], [999], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:36:13,235 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:36:13,235 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:36:15,885 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 12:36:15,885 INFO L272 AbstractInterpreter]: Visited 199 different actions 591 times. Merged at 7 different actions 18 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-27 12:36:15,897 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:36:15,897 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 12:36:15,897 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:36:15,897 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 12:36:15,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:36:15,906 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 12:36:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:36:16,196 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 12:36:16,808 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 264 proven. 4 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2018-10-27 12:36:16,808 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 12:36:17,274 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 223 proven. 90 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-10-27 12:36:17,295 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 12:36:17,296 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-27 12:36:17,296 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 12:36:17,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 12:36:17,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 12:36:17,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-10-27 12:36:17,297 INFO L87 Difference]: Start difference. First operand 62329 states and 91282 transitions. Second operand 9 states. [2018-10-27 12:36:32,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:36:32,304 INFO L93 Difference]: Finished difference Result 231731 states and 399308 transitions. [2018-10-27 12:36:32,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-27 12:36:32,304 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 353 [2018-10-27 12:36:32,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:36:33,849 INFO L225 Difference]: With dead ends: 231731 [2018-10-27 12:36:33,849 INFO L226 Difference]: Without dead ends: 170455 [2018-10-27 12:36:34,408 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 764 GetRequests, 725 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=282, Invalid=1124, Unknown=0, NotChecked=0, Total=1406 [2018-10-27 12:36:34,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170455 states. Received shutdown request... [2018-10-27 12:36:37,939 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 12:36:37,946 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 12:36:37,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:36:37 BoogieIcfgContainer [2018-10-27 12:36:37,946 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 12:36:37,947 INFO L168 Benchmark]: Toolchain (without parser) took 223251.62 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -165.4 MB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2018-10-27 12:36:37,949 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 12:36:37,949 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1230.97 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-27 12:36:37,950 INFO L168 Benchmark]: Boogie Procedure Inliner took 290.09 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 768.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -894.8 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-27 12:36:37,952 INFO L168 Benchmark]: Boogie Preprocessor took 143.72 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-10-27 12:36:37,954 INFO L168 Benchmark]: RCFGBuilder took 4869.32 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 269.2 MB). Peak memory consumption was 269.2 MB. Max. memory is 7.1 GB. [2018-10-27 12:36:37,955 INFO L168 Benchmark]: TraceAbstraction took 216707.45 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 2.0 GB in the beginning and 1.6 GB in the end (delta: 362.0 MB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. [2018-10-27 12:36:37,961 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1230.97 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 290.09 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 768.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -894.8 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 143.72 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4869.32 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 269.2 MB). Peak memory consumption was 269.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216707.45 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 2.0 GB in the beginning and 1.6 GB in the end (delta: 362.0 MB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1590]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1590). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 216.6s OverallTime, 9 OverallIterations, 7 TraceHistogramMax, 175.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2488 SDtfs, 25175 SDslu, 5544 SDs, 0 SdLazy, 43409 SolverSat, 7646 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 90.8s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 3134 GetRequests, 2801 SyntacticMatches, 41 SemanticMatches, 292 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8097 ImplicationChecksByTransitivity, 15.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62329occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.7s AbstIntTime, 6 AbstIntIterations, 3 AbstIntStrong, 0.9990601160823 AbsIntWeakeningRatio, 0.2786885245901639 AbsIntAvgWeakeningVarsNumRemoved, 49.756620428751575 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 8.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 4800 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 7.8s InterpolantComputationTime, 3422 NumberOfCodeBlocks, 3422 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 4395 ConstructedInterpolants, 0 QuantifiedInterpolants, 2367973 SizeOfPredicates, 2 NumberOfNonLiveVariables, 4966 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 15 InterpolantComputations, 3 PerfectInterpolantSequences, 2834/3263 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown