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_label48_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 12:32:58,885 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 12:32:58,889 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 12:32:58,905 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 12:32:58,905 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 12:32:58,906 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 12:32:58,910 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 12:32:58,913 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 12:32:58,917 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 12:32:58,918 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 12:32:58,919 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 12:32:58,919 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 12:32:58,921 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 12:32:58,922 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 12:32:58,930 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 12:32:58,933 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 12:32:58,934 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 12:32:58,938 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 12:32:58,940 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 12:32:58,944 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 12:32:58,945 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 12:32:58,947 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 12:32:58,952 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 12:32:58,952 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 12:32:58,952 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 12:32:58,953 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 12:32:58,956 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 12:32:58,957 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 12:32:58,957 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 12:32:58,958 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 12:32:58,959 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 12:32:58,962 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 12:32:58,962 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 12:32:58,962 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 12:32:58,964 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 12:32:58,965 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 12:32:58,965 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 12:32:58,988 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 12:32:58,988 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 12:32:58,989 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 12:32:58,989 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 12:32:58,990 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 12:32:58,990 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 12:32:58,990 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 12:32:58,990 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 12:32:58,990 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 12:32:58,990 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 12:32:58,991 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 12:32:58,991 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 12:32:58,992 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 12:32:58,992 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 12:32:58,992 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 12:32:58,992 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 12:32:58,992 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 12:32:58,993 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 12:32:58,993 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 12:32:58,993 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 12:32:58,993 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 12:32:58,993 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 12:32:58,994 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 12:32:58,994 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 12:32:58,994 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 12:32:58,994 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 12:32:58,994 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 12:32:58,995 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 12:32:58,995 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 12:32:58,995 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 12:32:58,995 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 12:32:58,995 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 12:32:58,996 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 12:32:58,996 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 12:32:59,041 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 12:32:59,056 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 12:32:59,061 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 12:32:59,062 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 12:32:59,063 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 12:32:59,063 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label48_true-unreach-call.c [2018-10-27 12:32:59,126 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2a8d1402a/d1207390ae64421988310d0b9f7b0a9f/FLAG144527eee [2018-10-27 12:32:59,791 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 12:32:59,793 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label48_true-unreach-call.c [2018-10-27 12:32:59,815 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2a8d1402a/d1207390ae64421988310d0b9f7b0a9f/FLAG144527eee [2018-10-27 12:32:59,835 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2a8d1402a/d1207390ae64421988310d0b9f7b0a9f [2018-10-27 12:32:59,848 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 12:32:59,850 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 12:32:59,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 12:32:59,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 12:32:59,857 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 12:32:59,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:32:59" (1/1) ... [2018-10-27 12:32:59,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e2657c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:59, skipping insertion in model container [2018-10-27 12:32:59,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:32:59" (1/1) ... [2018-10-27 12:32:59,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 12:32:59,983 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 12:33:00,791 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 12:33:00,797 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 12:33:01,208 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 12:33:01,234 INFO L193 MainTranslator]: Completed translation [2018-10-27 12:33:01,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:33:01 WrapperNode [2018-10-27 12:33:01,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 12:33:01,236 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 12:33:01,236 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 12:33:01,236 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 12:33:01,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:33:01" (1/1) ... [2018-10-27 12:33:01,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:33:01" (1/1) ... [2018-10-27 12:33:01,542 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 12:33:01,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 12:33:01,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 12:33:01,543 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 12:33:01,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:33:01" (1/1) ... [2018-10-27 12:33:01,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:33:01" (1/1) ... [2018-10-27 12:33:01,566 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:33:01" (1/1) ... [2018-10-27 12:33:01,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:33:01" (1/1) ... [2018-10-27 12:33:01,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:33:01" (1/1) ... [2018-10-27 12:33:01,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:33:01" (1/1) ... [2018-10-27 12:33:01,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:33:01" (1/1) ... [2018-10-27 12:33:01,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 12:33:01,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 12:33:01,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 12:33:01,690 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 12:33:01,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:33:01" (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 12:33:01,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 12:33:01,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 12:33:01,766 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 12:33:01,766 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 12:33:01,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 12:33:01,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 12:33:01,767 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 12:33:01,767 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 12:33:07,622 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 12:33:07,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:33:07 BoogieIcfgContainer [2018-10-27 12:33:07,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 12:33:07,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 12:33:07,624 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 12:33:07,628 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 12:33:07,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:32:59" (1/3) ... [2018-10-27 12:33:07,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d42fb98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:33:07, skipping insertion in model container [2018-10-27 12:33:07,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:33:01" (2/3) ... [2018-10-27 12:33:07,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d42fb98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:33:07, skipping insertion in model container [2018-10-27 12:33:07,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:33:07" (3/3) ... [2018-10-27 12:33:07,632 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label48_true-unreach-call.c [2018-10-27 12:33:07,642 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 12:33:07,653 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 12:33:07,674 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 12:33:07,729 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 12:33:07,729 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 12:33:07,729 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 12:33:07,729 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 12:33:07,729 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 12:33:07,730 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 12:33:07,730 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 12:33:07,730 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 12:33:07,779 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-27 12:33:07,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-27 12:33:07,807 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:33:07,810 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] [2018-10-27 12:33:07,813 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:33:07,821 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:33:07,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1967383007, now seen corresponding path program 1 times [2018-10-27 12:33:07,825 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:33:07,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:33:07,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:33:07,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:33:07,886 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:33:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:33:08,839 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-27 12:33:09,105 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 12:33:09,108 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 12:33:09,108 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 12:33:09,108 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:33:09,114 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 12:33:09,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 12:33:09,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 12:33:09,129 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-10-27 12:33:12,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:33:12,978 INFO L93 Difference]: Finished difference Result 1058 states and 1911 transitions. [2018-10-27 12:33:12,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 12:33:12,981 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 190 [2018-10-27 12:33:12,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:33:13,007 INFO L225 Difference]: With dead ends: 1058 [2018-10-27 12:33:13,008 INFO L226 Difference]: Without dead ends: 740 [2018-10-27 12:33:13,016 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 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 12:33:13,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2018-10-27 12:33:13,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 525. [2018-10-27 12:33:13,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2018-10-27 12:33:13,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 877 transitions. [2018-10-27 12:33:13,113 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 877 transitions. Word has length 190 [2018-10-27 12:33:13,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:33:13,114 INFO L481 AbstractCegarLoop]: Abstraction has 525 states and 877 transitions. [2018-10-27 12:33:13,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 12:33:13,115 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 877 transitions. [2018-10-27 12:33:13,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-10-27 12:33:13,123 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:33:13,123 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 12:33:13,124 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:33:13,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:33:13,124 INFO L82 PathProgramCache]: Analyzing trace with hash 805361829, now seen corresponding path program 1 times [2018-10-27 12:33:13,125 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:33:13,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:33:13,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:33:13,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:33:13,126 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:33:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:33:13,483 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:33:13,484 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 12:33:13,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 12:33:13,484 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:33:13,487 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 12:33:13,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 12:33:13,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 12:33:13,489 INFO L87 Difference]: Start difference. First operand 525 states and 877 transitions. Second operand 3 states. [2018-10-27 12:33:16,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:33:16,083 INFO L93 Difference]: Finished difference Result 1473 states and 2531 transitions. [2018-10-27 12:33:16,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 12:33:16,084 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 203 [2018-10-27 12:33:16,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:33:16,095 INFO L225 Difference]: With dead ends: 1473 [2018-10-27 12:33:16,095 INFO L226 Difference]: Without dead ends: 954 [2018-10-27 12:33:16,099 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 12:33:16,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2018-10-27 12:33:16,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 953. [2018-10-27 12:33:16,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 953 states. [2018-10-27 12:33:16,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1506 transitions. [2018-10-27 12:33:16,157 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1506 transitions. Word has length 203 [2018-10-27 12:33:16,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:33:16,158 INFO L481 AbstractCegarLoop]: Abstraction has 953 states and 1506 transitions. [2018-10-27 12:33:16,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 12:33:16,159 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1506 transitions. [2018-10-27 12:33:16,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-10-27 12:33:16,165 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:33:16,165 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 12:33:16,166 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:33:16,166 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:33:16,166 INFO L82 PathProgramCache]: Analyzing trace with hash 190939521, now seen corresponding path program 1 times [2018-10-27 12:33:16,166 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:33:16,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:33:16,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:33:16,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:33:16,168 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:33:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:33:16,555 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:33:16,556 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 12:33:16,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 12:33:16,556 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:33:16,557 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 12:33:16,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 12:33:16,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 12:33:16,561 INFO L87 Difference]: Start difference. First operand 953 states and 1506 transitions. Second operand 3 states. [2018-10-27 12:33:19,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:33:19,583 INFO L93 Difference]: Finished difference Result 2750 states and 4459 transitions. [2018-10-27 12:33:19,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 12:33:19,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2018-10-27 12:33:19,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:33:19,601 INFO L225 Difference]: With dead ends: 2750 [2018-10-27 12:33:19,601 INFO L226 Difference]: Without dead ends: 1803 [2018-10-27 12:33:19,609 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 12:33:19,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2018-10-27 12:33:19,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 1786. [2018-10-27 12:33:19,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1786 states. [2018-10-27 12:33:19,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1786 states to 1786 states and 2785 transitions. [2018-10-27 12:33:19,682 INFO L78 Accepts]: Start accepts. Automaton has 1786 states and 2785 transitions. Word has length 205 [2018-10-27 12:33:19,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:33:19,683 INFO L481 AbstractCegarLoop]: Abstraction has 1786 states and 2785 transitions. [2018-10-27 12:33:19,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 12:33:19,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1786 states and 2785 transitions. [2018-10-27 12:33:19,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-27 12:33:19,691 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:33:19,692 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 12:33:19,692 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:33:19,692 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:33:19,693 INFO L82 PathProgramCache]: Analyzing trace with hash -332724808, now seen corresponding path program 1 times [2018-10-27 12:33:19,693 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:33:19,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:33:19,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:33:19,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:33:19,695 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:33:19,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:33:19,961 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-27 12:33:20,301 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-27 12:33:20,475 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:33:20,476 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 12:33:20,476 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 12:33:20,476 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:33:20,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 12:33:20,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 12:33:20,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 12:33:20,479 INFO L87 Difference]: Start difference. First operand 1786 states and 2785 transitions. Second operand 6 states. [2018-10-27 12:33:24,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:33:24,117 INFO L93 Difference]: Finished difference Result 5463 states and 9326 transitions. [2018-10-27 12:33:24,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 12:33:24,117 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 208 [2018-10-27 12:33:24,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:33:24,153 INFO L225 Difference]: With dead ends: 5463 [2018-10-27 12:33:24,153 INFO L226 Difference]: Without dead ends: 3683 [2018-10-27 12:33:24,162 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 12:33:24,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3683 states. [2018-10-27 12:33:24,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3683 to 3573. [2018-10-27 12:33:24,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3573 states. [2018-10-27 12:33:24,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3573 states to 3573 states and 5686 transitions. [2018-10-27 12:33:24,304 INFO L78 Accepts]: Start accepts. Automaton has 3573 states and 5686 transitions. Word has length 208 [2018-10-27 12:33:24,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:33:24,305 INFO L481 AbstractCegarLoop]: Abstraction has 3573 states and 5686 transitions. [2018-10-27 12:33:24,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 12:33:24,305 INFO L276 IsEmpty]: Start isEmpty. Operand 3573 states and 5686 transitions. [2018-10-27 12:33:24,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-27 12:33:24,321 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:33:24,322 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 12:33:24,322 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:33:24,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:33:24,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1900171544, now seen corresponding path program 1 times [2018-10-27 12:33:24,322 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:33:24,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:33:24,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:33:24,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:33:24,324 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:33:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:33:24,758 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:33:24,759 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:33:24,759 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:33:24,760 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 224 with the following transitions: [2018-10-27 12:33:24,762 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [36], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [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], [981], [983], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:33:24,845 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:33:24,846 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:33:25,999 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 12:33:26,002 INFO L272 AbstractInterpreter]: Visited 191 different actions 191 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-27 12:33:26,043 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:33:26,043 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 12:33:27,113 INFO L227 lantSequenceWeakener]: Weakened 214 states. On average, predicates are now at 73.46% of their original sizes. [2018-10-27 12:33:27,113 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 12:33:28,199 INFO L415 sIntCurrentIteration]: We unified 222 AI predicates to 222 [2018-10-27 12:33:28,200 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 12:33:28,200 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 12:33:28,201 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-10-27 12:33:28,201 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:33:28,201 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-27 12:33:28,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-27 12:33:28,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2018-10-27 12:33:28,203 INFO L87 Difference]: Start difference. First operand 3573 states and 5686 transitions. Second operand 17 states. [2018-10-27 12:33:42,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:33:42,354 INFO L93 Difference]: Finished difference Result 7350 states and 11727 transitions. [2018-10-27 12:33:42,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 12:33:42,354 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 223 [2018-10-27 12:33:42,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:33:42,374 INFO L225 Difference]: With dead ends: 7350 [2018-10-27 12:33:42,374 INFO L226 Difference]: Without dead ends: 3783 [2018-10-27 12:33:42,388 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 225 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2018-10-27 12:33:42,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3783 states. [2018-10-27 12:33:42,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3783 to 3781. [2018-10-27 12:33:42,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3781 states. [2018-10-27 12:33:42,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3781 states to 3781 states and 5904 transitions. [2018-10-27 12:33:42,492 INFO L78 Accepts]: Start accepts. Automaton has 3781 states and 5904 transitions. Word has length 223 [2018-10-27 12:33:42,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:33:42,493 INFO L481 AbstractCegarLoop]: Abstraction has 3781 states and 5904 transitions. [2018-10-27 12:33:42,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-27 12:33:42,493 INFO L276 IsEmpty]: Start isEmpty. Operand 3781 states and 5904 transitions. [2018-10-27 12:33:42,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-10-27 12:33:42,509 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:33:42,509 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 12:33:42,510 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:33:42,510 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:33:42,510 INFO L82 PathProgramCache]: Analyzing trace with hash -2107279691, now seen corresponding path program 1 times [2018-10-27 12:33:42,511 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:33:42,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:33:42,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:33:42,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:33:42,513 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:33:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:33:42,773 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 12:33:42,893 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 51 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:33:42,893 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:33:42,893 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:33:42,894 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 236 with the following transitions: [2018-10-27 12:33:42,894 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [36], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [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], [981], [983], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:33:42,904 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:33:42,904 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:33:44,085 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 12:33:44,085 INFO L272 AbstractInterpreter]: Visited 195 different actions 384 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 12:33:44,096 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:33:44,096 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 12:33:45,379 INFO L227 lantSequenceWeakener]: Weakened 67 states. On average, predicates are now at 82.75% of their original sizes. [2018-10-27 12:33:45,380 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 12:33:48,142 INFO L415 sIntCurrentIteration]: We unified 234 AI predicates to 234 [2018-10-27 12:33:48,143 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 12:33:48,143 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 12:33:48,143 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [10] total 31 [2018-10-27 12:33:48,144 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:33:48,144 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-27 12:33:48,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-27 12:33:48,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2018-10-27 12:33:48,145 INFO L87 Difference]: Start difference. First operand 3781 states and 5904 transitions. Second operand 23 states. [2018-10-27 12:34:49,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:34:49,538 INFO L93 Difference]: Finished difference Result 7981 states and 12533 transitions. [2018-10-27 12:34:49,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-27 12:34:49,538 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 235 [2018-10-27 12:34:49,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:34:49,559 INFO L225 Difference]: With dead ends: 7981 [2018-10-27 12:34:49,560 INFO L226 Difference]: Without dead ends: 4414 [2018-10-27 12:34:49,572 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 243 GetRequests, 201 SyntacticMatches, 12 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=209, Invalid=783, Unknown=0, NotChecked=0, Total=992 [2018-10-27 12:34:49,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4414 states. [2018-10-27 12:34:49,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4414 to 4409. [2018-10-27 12:34:49,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4409 states. [2018-10-27 12:34:49,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 6583 transitions. [2018-10-27 12:34:49,695 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 6583 transitions. Word has length 235 [2018-10-27 12:34:49,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:34:49,695 INFO L481 AbstractCegarLoop]: Abstraction has 4409 states and 6583 transitions. [2018-10-27 12:34:49,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-27 12:34:49,696 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 6583 transitions. [2018-10-27 12:34:49,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-10-27 12:34:49,712 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:34:49,713 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 12:34:49,713 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:34:49,713 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:34:49,713 INFO L82 PathProgramCache]: Analyzing trace with hash 26603704, now seen corresponding path program 1 times [2018-10-27 12:34:49,714 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:34:49,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:34:49,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:34:49,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:34:49,715 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:34:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:34:50,038 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 52 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-10-27 12:34:50,038 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:34:50,038 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:34:50,039 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 242 with the following transitions: [2018-10-27 12:34:50,039 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [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], [981], [983], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:34:50,047 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:34:50,047 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:34:51,129 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 12:34:51,130 INFO L272 AbstractInterpreter]: Visited 196 different actions 384 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 12:34:51,138 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:34:51,139 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 12:34:51,139 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:34:51,139 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 12:34:51,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:34:51,149 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 12:34:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:34:51,429 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 12:34:51,860 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-10-27 12:34:51,860 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 12:34:52,068 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-27 12:34:52,174 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-27 12:34:52,903 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 52 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-10-27 12:34:52,940 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 12:34:52,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2018-10-27 12:34:52,941 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 12:34:52,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 12:34:52,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 12:34:52,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-27 12:34:52,942 INFO L87 Difference]: Start difference. First operand 4409 states and 6583 transitions. Second operand 8 states. [2018-10-27 12:34:58,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:34:58,798 INFO L93 Difference]: Finished difference Result 15279 states and 29636 transitions. [2018-10-27 12:34:58,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 12:34:58,799 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 241 [2018-10-27 12:34:58,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:34:58,911 INFO L225 Difference]: With dead ends: 15279 [2018-10-27 12:34:58,911 INFO L226 Difference]: Without dead ends: 11712 [2018-10-27 12:34:58,972 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2018-10-27 12:34:58,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11712 states. [2018-10-27 12:34:59,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11712 to 11472. [2018-10-27 12:34:59,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11472 states. [2018-10-27 12:34:59,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11472 states to 11472 states and 18915 transitions. [2018-10-27 12:34:59,504 INFO L78 Accepts]: Start accepts. Automaton has 11472 states and 18915 transitions. Word has length 241 [2018-10-27 12:34:59,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:34:59,505 INFO L481 AbstractCegarLoop]: Abstraction has 11472 states and 18915 transitions. [2018-10-27 12:34:59,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-27 12:34:59,505 INFO L276 IsEmpty]: Start isEmpty. Operand 11472 states and 18915 transitions. [2018-10-27 12:34:59,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-10-27 12:34:59,569 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:34:59,570 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 12:34:59,570 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:34:59,571 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:34:59,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1105756810, now seen corresponding path program 1 times [2018-10-27 12:34:59,571 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:34:59,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:34:59,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:34:59,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:34:59,572 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:34:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:35:00,080 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 90 proven. 23 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-10-27 12:35:00,080 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:35:00,081 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:35:00,081 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 267 with the following transitions: [2018-10-27 12:35:00,081 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [64], [65], [68], [71], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [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], [981], [983], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:35:00,089 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:35:00,090 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:35:01,878 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 12:35:01,879 INFO L272 AbstractInterpreter]: Visited 197 different actions 386 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 12:35:01,919 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:35:01,919 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 12:35:01,919 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:35:01,920 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 12:35:01,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:35:01,936 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 12:35:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:35:02,178 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 12:35:02,774 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-10-27 12:35:02,774 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 12:35:03,064 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 89 proven. 8 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-10-27 12:35:03,086 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 12:35:03,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-27 12:35:03,086 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 12:35:03,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 12:35:03,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 12:35:03,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-10-27 12:35:03,088 INFO L87 Difference]: Start difference. First operand 11472 states and 18915 transitions. Second operand 9 states. [2018-10-27 12:35:06,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:35:06,085 INFO L93 Difference]: Finished difference Result 31693 states and 55405 transitions. [2018-10-27 12:35:06,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 12:35:06,089 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 266 [2018-10-27 12:35:06,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:35:06,218 INFO L225 Difference]: With dead ends: 31693 [2018-10-27 12:35:06,219 INFO L226 Difference]: Without dead ends: 21063 [2018-10-27 12:35:06,282 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 532 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2018-10-27 12:35:06,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21063 states. [2018-10-27 12:35:06,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21063 to 19377. [2018-10-27 12:35:06,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19377 states. [2018-10-27 12:35:06,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19377 states to 19377 states and 29080 transitions. [2018-10-27 12:35:06,976 INFO L78 Accepts]: Start accepts. Automaton has 19377 states and 29080 transitions. Word has length 266 [2018-10-27 12:35:06,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:35:06,977 INFO L481 AbstractCegarLoop]: Abstraction has 19377 states and 29080 transitions. [2018-10-27 12:35:06,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 12:35:06,977 INFO L276 IsEmpty]: Start isEmpty. Operand 19377 states and 29080 transitions. [2018-10-27 12:35:07,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-10-27 12:35:07,051 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:35:07,052 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-27 12:35:07,052 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:35:07,052 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:35:07,053 INFO L82 PathProgramCache]: Analyzing trace with hash -138689525, now seen corresponding path program 1 times [2018-10-27 12:35:07,053 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:35:07,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:35:07,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:35:07,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:35:07,054 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:35:07,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:35:07,617 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-27 12:35:07,617 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:35:07,617 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:35:07,618 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 294 with the following transitions: [2018-10-27 12:35:07,618 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [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], [981], [983], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:35:07,624 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:35:07,625 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:35:09,040 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 12:35:09,040 INFO L272 AbstractInterpreter]: Visited 196 different actions 384 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 12:35:09,050 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:35:09,050 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 12:35:09,050 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:35:09,050 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 12:35:09,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:35:09,059 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 12:35:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:35:09,276 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 12:35:09,622 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 119 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-10-27 12:35:09,622 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 12:35:10,116 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-10-27 12:35:10,149 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 12:35:10,150 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2018-10-27 12:35:10,150 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 12:35:10,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 12:35:10,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 12:35:10,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-10-27 12:35:10,153 INFO L87 Difference]: Start difference. First operand 19377 states and 29080 transitions. Second operand 8 states. [2018-10-27 12:35:16,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:35:16,616 INFO L93 Difference]: Finished difference Result 57422 states and 92934 transitions. [2018-10-27 12:35:16,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-27 12:35:16,617 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 293 [2018-10-27 12:35:16,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:35:16,825 INFO L225 Difference]: With dead ends: 57422 [2018-10-27 12:35:16,825 INFO L226 Difference]: Without dead ends: 38468 [2018-10-27 12:35:16,925 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 601 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=216, Invalid=714, Unknown=0, NotChecked=0, Total=930 [2018-10-27 12:35:16,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38468 states. [2018-10-27 12:35:17,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38468 to 37399. [2018-10-27 12:35:17,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37399 states. [2018-10-27 12:35:17,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37399 states to 37399 states and 50909 transitions. [2018-10-27 12:35:17,999 INFO L78 Accepts]: Start accepts. Automaton has 37399 states and 50909 transitions. Word has length 293 [2018-10-27 12:35:17,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:35:17,999 INFO L481 AbstractCegarLoop]: Abstraction has 37399 states and 50909 transitions. [2018-10-27 12:35:18,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-27 12:35:18,000 INFO L276 IsEmpty]: Start isEmpty. Operand 37399 states and 50909 transitions. [2018-10-27 12:35:18,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-10-27 12:35:18,074 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:35:18,075 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:35:18,075 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:35:18,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:35:18,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1319546731, now seen corresponding path program 1 times [2018-10-27 12:35:18,076 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:35:18,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:35:18,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:35:18,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:35:18,077 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:35:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:35:18,742 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-27 12:35:18,891 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 191 proven. 88 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-10-27 12:35:18,891 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:35:18,891 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:35:18,891 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 364 with the following transitions: [2018-10-27 12:35:18,892 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [44], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [111], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [174], [175], [179], [183], [187], [191], [202], [206], [210], [213], [216], [220], [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], [981], [983], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:35:18,897 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:35:18,898 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:35:20,234 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 12:35:20,234 INFO L272 AbstractInterpreter]: Visited 198 different actions 388 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 12:35:20,240 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:35:20,240 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 12:35:20,240 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:35:20,240 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 12:35:20,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:35:20,249 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 12:35:20,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:35:20,522 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 12:35:21,122 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 296 proven. 2 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-10-27 12:35:21,122 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 12:35:21,571 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 246 proven. 31 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-10-27 12:35:21,593 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 12:35:21,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-27 12:35:21,593 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 12:35:21,594 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 12:35:21,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 12:35:21,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-10-27 12:35:21,594 INFO L87 Difference]: Start difference. First operand 37399 states and 50909 transitions. Second operand 9 states. [2018-10-27 12:35:35,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:35:35,484 INFO L93 Difference]: Finished difference Result 179632 states and 287426 transitions. [2018-10-27 12:35:35,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-27 12:35:35,484 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 363 [2018-10-27 12:35:35,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:35:36,549 INFO L225 Difference]: With dead ends: 179632 [2018-10-27 12:35:36,549 INFO L226 Difference]: Without dead ends: 143665 [2018-10-27 12:35:36,798 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 794 GetRequests, 751 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=381, Invalid=1511, Unknown=0, NotChecked=0, Total=1892 [2018-10-27 12:35:36,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143665 states. [2018-10-27 12:35:41,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143665 to 137558. [2018-10-27 12:35:41,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137558 states. [2018-10-27 12:35:42,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137558 states to 137558 states and 190576 transitions. [2018-10-27 12:35:42,119 INFO L78 Accepts]: Start accepts. Automaton has 137558 states and 190576 transitions. Word has length 363 [2018-10-27 12:35:42,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:35:42,120 INFO L481 AbstractCegarLoop]: Abstraction has 137558 states and 190576 transitions. [2018-10-27 12:35:42,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 12:35:42,120 INFO L276 IsEmpty]: Start isEmpty. Operand 137558 states and 190576 transitions. [2018-10-27 12:35:42,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2018-10-27 12:35:42,432 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:35:42,433 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 12:35:42,433 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:35:42,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:35:42,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1670276784, now seen corresponding path program 1 times [2018-10-27 12:35:42,434 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:35:42,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:35:42,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:35:42,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:35:42,435 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:35:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:35:42,851 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-27 12:35:43,185 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-27 12:35:43,864 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 216 proven. 163 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-10-27 12:35:43,865 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:35:43,865 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:35:43,865 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 416 with the following transitions: [2018-10-27 12:35:43,865 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [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], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [213], [216], [220], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [276], [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], [436], [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], [981], [983], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:35:43,870 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:35:43,870 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:35:44,771 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 12:35:44,771 INFO L272 AbstractInterpreter]: Visited 197 different actions 386 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 12:35:44,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:35:44,782 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 12:35:44,782 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:35:44,782 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 12:35:44,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:35:44,789 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 12:35:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:35:45,853 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 12:35:46,122 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 216 proven. 4 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2018-10-27 12:35:46,122 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 12:35:46,449 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2018-10-27 12:35:46,472 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-27 12:35:46,472 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 5] total 14 [2018-10-27 12:35:46,472 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:35:46,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 12:35:46,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 12:35:46,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-10-27 12:35:46,473 INFO L87 Difference]: Start difference. First operand 137558 states and 190576 transitions. Second operand 5 states. [2018-10-27 12:35:50,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:35:50,814 INFO L93 Difference]: Finished difference Result 357555 states and 489063 transitions. [2018-10-27 12:35:50,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 12:35:50,814 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 415 [2018-10-27 12:35:50,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:35:53,010 INFO L225 Difference]: With dead ends: 357555 [2018-10-27 12:35:53,011 INFO L226 Difference]: Without dead ends: 236697 [2018-10-27 12:35:53,211 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 843 GetRequests, 822 SyntacticMatches, 8 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2018-10-27 12:35:53,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236697 states. [2018-10-27 12:35:58,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236697 to 236329. [2018-10-27 12:35:58,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236329 states. [2018-10-27 12:35:59,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236329 states to 236329 states and 324026 transitions. [2018-10-27 12:35:59,202 INFO L78 Accepts]: Start accepts. Automaton has 236329 states and 324026 transitions. Word has length 415 [2018-10-27 12:35:59,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:35:59,203 INFO L481 AbstractCegarLoop]: Abstraction has 236329 states and 324026 transitions. [2018-10-27 12:35:59,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 12:35:59,203 INFO L276 IsEmpty]: Start isEmpty. Operand 236329 states and 324026 transitions. [2018-10-27 12:36:05,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2018-10-27 12:36:05,950 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:36:05,950 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 12:36:05,950 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:36:05,951 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:36:05,951 INFO L82 PathProgramCache]: Analyzing trace with hash 246317905, now seen corresponding path program 1 times [2018-10-27 12:36:05,951 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:36:05,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:36:05,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:36:05,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:36:05,952 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:36:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:36:06,355 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 263 proven. 90 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-10-27 12:36:06,356 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:36:06,356 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:36:06,356 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 438 with the following transitions: [2018-10-27 12:36:06,356 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [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], [562], [567], [569], [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], [981], [983], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:36:06,361 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:36:06,362 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:36:07,587 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 12:36:07,588 INFO L272 AbstractInterpreter]: Visited 197 different actions 386 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 12:36:07,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:36:07,597 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 12:36:07,597 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:36:07,598 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 12:36:07,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:36:07,607 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 12:36:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:36:07,894 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 12:36:08,027 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 329 proven. 2 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-10-27 12:36:08,028 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 12:36:08,413 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 329 proven. 2 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-10-27 12:36:08,436 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 12:36:08,436 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-27 12:36:08,437 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 12:36:08,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 12:36:08,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 12:36:08,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-10-27 12:36:08,438 INFO L87 Difference]: Start difference. First operand 236329 states and 324026 transitions. Second operand 9 states. [2018-10-27 12:36:21,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:36:21,619 INFO L93 Difference]: Finished difference Result 478206 states and 667100 transitions. [2018-10-27 12:36:21,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-27 12:36:21,620 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 437 [2018-10-27 12:36:21,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:36:22,501 INFO L225 Difference]: With dead ends: 478206 [2018-10-27 12:36:22,501 INFO L226 Difference]: Without dead ends: 189824 [2018-10-27 12:36:23,166 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 952 GetRequests, 904 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=451, Invalid=1805, Unknown=0, NotChecked=0, Total=2256 [2018-10-27 12:36:23,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189824 states. [2018-10-27 12:36:26,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189824 to 184479. [2018-10-27 12:36:26,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184479 states. [2018-10-27 12:36:27,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184479 states to 184479 states and 217471 transitions. [2018-10-27 12:36:27,170 INFO L78 Accepts]: Start accepts. Automaton has 184479 states and 217471 transitions. Word has length 437 [2018-10-27 12:36:27,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:36:27,171 INFO L481 AbstractCegarLoop]: Abstraction has 184479 states and 217471 transitions. [2018-10-27 12:36:27,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 12:36:27,171 INFO L276 IsEmpty]: Start isEmpty. Operand 184479 states and 217471 transitions. [2018-10-27 12:36:27,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2018-10-27 12:36:27,415 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:36:27,415 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 12:36:27,415 INFO L424 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:36:27,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:36:27,416 INFO L82 PathProgramCache]: Analyzing trace with hash -404733961, now seen corresponding path program 1 times [2018-10-27 12:36:27,416 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:36:27,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:36:27,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:36:27,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:36:27,417 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:36:27,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:36:28,733 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 386 proven. 165 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2018-10-27 12:36:28,733 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:36:28,733 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:36:28,733 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 545 with the following transitions: [2018-10-27 12:36:28,734 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [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], [175], [179], [183], [187], [191], [202], [206], [210], [213], [216], [220], [221], [225], [229], [233], [237], [240], [241], [245], [249], [253], [257], [261], [265], [269], [273], [276], [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], [600], [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], [981], [983], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:36:28,738 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:36:28,739 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:36:29,678 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 12:36:29,679 INFO L272 AbstractInterpreter]: Visited 198 different actions 388 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 12:36:29,680 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:36:29,680 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 12:36:29,680 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:36:29,680 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 12:36:29,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:36:29,689 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Received shutdown request... [2018-10-27 12:36:30,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:36:30,030 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 12:36:30,060 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-27 12:36:30,260 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 12:36:30,261 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 12:36:30,269 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 12:36:30,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:36:30 BoogieIcfgContainer [2018-10-27 12:36:30,270 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 12:36:30,271 INFO L168 Benchmark]: Toolchain (without parser) took 210422.03 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -696.4 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-10-27 12:36:30,272 INFO L168 Benchmark]: CDTParser took 0.19 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 12:36:30,272 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1384.13 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: 76.6 MB). Peak memory consumption was 76.6 MB. Max. memory is 7.1 GB. [2018-10-27 12:36:30,276 INFO L168 Benchmark]: Boogie Procedure Inliner took 307.11 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -868.2 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-27 12:36:30,283 INFO L168 Benchmark]: Boogie Preprocessor took 146.47 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: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2018-10-27 12:36:30,284 INFO L168 Benchmark]: RCFGBuilder took 5933.31 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: 246.3 MB). Peak memory consumption was 246.3 MB. Max. memory is 7.1 GB. [2018-10-27 12:36:30,285 INFO L168 Benchmark]: TraceAbstraction took 202645.97 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.6 GB). Free memory was 2.0 GB in the beginning and 2.1 GB in the end (delta: -165.2 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-27 12:36:30,294 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 1384.13 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: 76.6 MB). Peak memory consumption was 76.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 307.11 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -868.2 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 146.47 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: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5933.31 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: 246.3 MB). Peak memory consumption was 246.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 202645.97 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.6 GB). Free memory was 2.0 GB in the beginning and 2.1 GB in the end (delta: -165.2 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1584]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1584). Cancelled while BasicCegarLoop was analyzing trace of length 545 with TraceHistMax 6,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 202.5s OverallTime, 13 OverallIterations, 6 TraceHistogramMax, 141.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3467 SDtfs, 17663 SDslu, 4856 SDs, 0 SdLazy, 34224 SolverSat, 5459 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 69.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 4759 GetRequests, 4510 SyntacticMatches, 30 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1877 ImplicationChecksByTransitivity, 12.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=236329occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.3s AbstIntTime, 9 AbstIntIterations, 2 AbstIntStrong, 0.9988500535345477 AbsIntWeakeningRatio, 0.2916666666666667 AbsIntAvgWeakeningVarsNumRemoved, 47.521929824561404 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 18.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 15165 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 11.3s InterpolantComputationTime, 5294 NumberOfCodeBlocks, 5294 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 7285 ConstructedInterpolants, 0 QuantifiedInterpolants, 5404194 SizeOfPredicates, 6 NumberOfNonLiveVariables, 8489 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 24 InterpolantComputations, 5 PerfectInterpolantSequences, 4497/4990 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown