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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label53_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 00:32:00,833 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 00:32:00,835 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 00:32:00,847 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 00:32:00,848 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 00:32:00,849 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 00:32:00,850 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 00:32:00,854 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 00:32:00,857 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 00:32:00,858 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 00:32:00,860 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 00:32:00,860 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 00:32:00,861 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 00:32:00,864 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 00:32:00,869 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 00:32:00,870 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 00:32:00,871 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 00:32:00,876 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 00:32:00,881 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 00:32:00,885 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 00:32:00,887 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 00:32:00,888 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 00:32:00,895 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 00:32:00,895 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 00:32:00,896 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 00:32:00,897 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 00:32:00,897 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 00:32:00,898 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 00:32:00,901 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 00:32:00,904 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 00:32:00,904 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 00:32:00,906 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-27 00:32:00,909 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-27 00:32:00,933 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 00:32:00,934 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 00:32:00,934 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 00:32:00,935 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 00:32:00,935 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 00:32:00,935 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 00:32:00,935 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 00:32:00,935 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 00:32:00,936 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 00:32:00,936 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 00:32:00,936 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 00:32:00,936 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 00:32:00,937 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 00:32:00,937 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 00:32:00,937 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 00:32:00,937 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 00:32:00,938 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 00:32:00,938 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 00:32:00,938 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 00:32:00,938 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 00:32:00,938 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 00:32:00,939 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 00:32:00,939 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 00:32:00,939 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 00:32:00,939 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:32:00,939 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 00:32:00,940 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 00:32:00,940 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 00:32:00,940 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 00:32:00,940 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 00:32:00,940 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 00:32:00,941 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 00:32:00,941 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 00:32:00,941 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 00:32:00,985 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 00:32:00,999 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 00:32:01,002 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 00:32:01,004 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 00:32:01,004 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 00:32:01,005 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label53_false-unreach-call.c [2018-10-27 00:32:01,079 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c8d55f1f1/0eadc20d5e204c38a4182d25b2ded3bc/FLAGf769596d0 [2018-10-27 00:32:02,004 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 00:32:02,005 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label53_false-unreach-call.c [2018-10-27 00:32:02,057 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c8d55f1f1/0eadc20d5e204c38a4182d25b2ded3bc/FLAGf769596d0 [2018-10-27 00:32:02,075 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c8d55f1f1/0eadc20d5e204c38a4182d25b2ded3bc [2018-10-27 00:32:02,089 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 00:32:02,092 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 00:32:02,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 00:32:02,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 00:32:02,097 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 00:32:02,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:32:02" (1/1) ... [2018-10-27 00:32:02,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46764b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:02, skipping insertion in model container [2018-10-27 00:32:02,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:32:02" (1/1) ... [2018-10-27 00:32:02,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 00:32:02,418 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 00:32:04,399 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:32:04,404 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 00:32:05,428 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:32:05,483 INFO L193 MainTranslator]: Completed translation [2018-10-27 00:32:05,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:05 WrapperNode [2018-10-27 00:32:05,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 00:32:05,485 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 00:32:05,486 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 00:32:05,486 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 00:32:05,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:05" (1/1) ... [2018-10-27 00:32:05,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:05" (1/1) ... [2018-10-27 00:32:06,257 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 00:32:06,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 00:32:06,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 00:32:06,258 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 00:32:06,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:05" (1/1) ... [2018-10-27 00:32:06,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:05" (1/1) ... [2018-10-27 00:32:06,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:05" (1/1) ... [2018-10-27 00:32:06,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:05" (1/1) ... [2018-10-27 00:32:06,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:05" (1/1) ... [2018-10-27 00:32:06,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:05" (1/1) ... [2018-10-27 00:32:06,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:05" (1/1) ... [2018-10-27 00:32:06,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 00:32:06,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 00:32:06,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 00:32:06,893 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 00:32:06,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:05" (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 00:32:06,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 00:32:06,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 00:32:06,968 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-27 00:32:06,968 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-27 00:32:06,968 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-27 00:32:06,968 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-27 00:32:06,969 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 00:32:06,969 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 00:32:06,969 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 00:32:06,969 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 00:32:06,969 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 00:32:06,970 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 00:32:06,970 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 00:32:06,971 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 00:32:06,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 00:32:06,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 00:32:06,971 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 00:32:06,971 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 00:32:24,913 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 00:32:24,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:32:24 BoogieIcfgContainer [2018-10-27 00:32:24,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 00:32:24,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 00:32:24,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 00:32:24,919 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 00:32:24,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:32:02" (1/3) ... [2018-10-27 00:32:24,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1d8c25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:32:24, skipping insertion in model container [2018-10-27 00:32:24,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:05" (2/3) ... [2018-10-27 00:32:24,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1d8c25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:32:24, skipping insertion in model container [2018-10-27 00:32:24,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:32:24" (3/3) ... [2018-10-27 00:32:24,923 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label53_false-unreach-call.c [2018-10-27 00:32:24,933 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 00:32:24,944 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 00:32:24,963 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 00:32:25,023 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 00:32:25,023 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 00:32:25,023 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 00:32:25,024 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 00:32:25,024 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 00:32:25,024 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 00:32:25,024 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 00:32:25,024 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 00:32:25,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-27 00:32:25,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-27 00:32:25,101 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:32:25,103 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:32:25,105 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:32:25,112 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:32:25,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1562328788, now seen corresponding path program 1 times [2018-10-27 00:32:25,115 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:32:25,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:32:25,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:32:25,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:32:25,167 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:32:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:32:25,575 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 00:32:25,578 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:32:25,578 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 00:32:25,579 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:32:25,585 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 00:32:25,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 00:32:25,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:32:25,606 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 4 states. [2018-10-27 00:32:53,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:32:53,342 INFO L93 Difference]: Finished difference Result 6510 states and 12381 transitions. [2018-10-27 00:32:53,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 00:32:53,353 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-10-27 00:32:53,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:32:53,413 INFO L225 Difference]: With dead ends: 6510 [2018-10-27 00:32:53,414 INFO L226 Difference]: Without dead ends: 4726 [2018-10-27 00:32:53,427 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:32:53,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4726 states. [2018-10-27 00:32:53,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4726 to 4687. [2018-10-27 00:32:53,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4687 states. [2018-10-27 00:32:53,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4687 states to 4687 states and 7413 transitions. [2018-10-27 00:32:53,673 INFO L78 Accepts]: Start accepts. Automaton has 4687 states and 7413 transitions. Word has length 18 [2018-10-27 00:32:53,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:32:53,674 INFO L481 AbstractCegarLoop]: Abstraction has 4687 states and 7413 transitions. [2018-10-27 00:32:53,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 00:32:53,674 INFO L276 IsEmpty]: Start isEmpty. Operand 4687 states and 7413 transitions. [2018-10-27 00:32:53,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-27 00:32:53,682 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:32:53,683 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 00:32:53,683 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:32:53,683 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:32:53,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1283828407, now seen corresponding path program 1 times [2018-10-27 00:32:53,684 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:32:53,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:32:53,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:32:53,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:32:53,686 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:32:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:32:54,253 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 00:32:54,664 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:32:54,664 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:32:54,664 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:32:54,664 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:32:54,667 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:32:54,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:32:54,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:32:54,668 INFO L87 Difference]: Start difference. First operand 4687 states and 7413 transitions. Second operand 6 states. [2018-10-27 00:33:23,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:33:23,877 INFO L93 Difference]: Finished difference Result 17857 states and 28861 transitions. [2018-10-27 00:33:23,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:33:23,877 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 90 [2018-10-27 00:33:23,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:33:23,941 INFO L225 Difference]: With dead ends: 17857 [2018-10-27 00:33:23,941 INFO L226 Difference]: Without dead ends: 13176 [2018-10-27 00:33:23,960 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 00:33:23,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13176 states. [2018-10-27 00:33:24,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13176 to 13105. [2018-10-27 00:33:24,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13105 states. [2018-10-27 00:33:24,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13105 states to 13105 states and 18698 transitions. [2018-10-27 00:33:24,501 INFO L78 Accepts]: Start accepts. Automaton has 13105 states and 18698 transitions. Word has length 90 [2018-10-27 00:33:24,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:33:24,501 INFO L481 AbstractCegarLoop]: Abstraction has 13105 states and 18698 transitions. [2018-10-27 00:33:24,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:33:24,502 INFO L276 IsEmpty]: Start isEmpty. Operand 13105 states and 18698 transitions. [2018-10-27 00:33:24,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-27 00:33:24,507 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:33:24,509 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 00:33:24,509 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:33:24,511 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:33:24,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1789601376, now seen corresponding path program 1 times [2018-10-27 00:33:24,511 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:33:24,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:33:24,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:33:24,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:33:24,513 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:33:24,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:33:25,024 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:33:25,024 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:33:25,024 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:33:25,025 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:33:25,025 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:33:25,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:33:25,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:33:25,026 INFO L87 Difference]: Start difference. First operand 13105 states and 18698 transitions. Second operand 6 states. [2018-10-27 00:33:51,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:33:51,628 INFO L93 Difference]: Finished difference Result 43695 states and 64633 transitions. [2018-10-27 00:33:51,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:33:51,630 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2018-10-27 00:33:51,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:33:51,742 INFO L225 Difference]: With dead ends: 43695 [2018-10-27 00:33:51,743 INFO L226 Difference]: Without dead ends: 30596 [2018-10-27 00:33:51,795 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 00:33:51,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30596 states. [2018-10-27 00:33:52,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30596 to 30436. [2018-10-27 00:33:52,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30436 states. [2018-10-27 00:33:52,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30436 states to 30436 states and 42893 transitions. [2018-10-27 00:33:52,457 INFO L78 Accepts]: Start accepts. Automaton has 30436 states and 42893 transitions. Word has length 92 [2018-10-27 00:33:52,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:33:52,457 INFO L481 AbstractCegarLoop]: Abstraction has 30436 states and 42893 transitions. [2018-10-27 00:33:52,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:33:52,458 INFO L276 IsEmpty]: Start isEmpty. Operand 30436 states and 42893 transitions. [2018-10-27 00:33:52,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-27 00:33:52,463 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:33:52,463 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 00:33:52,464 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:33:52,464 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:33:52,464 INFO L82 PathProgramCache]: Analyzing trace with hash 130074759, now seen corresponding path program 1 times [2018-10-27 00:33:52,464 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:33:52,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:33:52,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:33:52,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:33:52,467 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:33:52,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:33:52,941 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:33:52,941 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:33:52,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:33:52,942 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:33:52,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:33:52,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:33:52,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:33:52,944 INFO L87 Difference]: Start difference. First operand 30436 states and 42893 transitions. Second operand 6 states. [2018-10-27 00:34:14,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:34:14,615 INFO L93 Difference]: Finished difference Result 92621 states and 135372 transitions. [2018-10-27 00:34:14,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 00:34:14,615 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2018-10-27 00:34:14,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:34:14,828 INFO L225 Difference]: With dead ends: 92621 [2018-10-27 00:34:14,828 INFO L226 Difference]: Without dead ends: 62191 [2018-10-27 00:34:14,893 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-27 00:34:14,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62191 states. [2018-10-27 00:34:16,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62191 to 61772. [2018-10-27 00:34:16,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61772 states. [2018-10-27 00:34:16,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61772 states to 61772 states and 86921 transitions. [2018-10-27 00:34:16,235 INFO L78 Accepts]: Start accepts. Automaton has 61772 states and 86921 transitions. Word has length 100 [2018-10-27 00:34:16,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:34:16,236 INFO L481 AbstractCegarLoop]: Abstraction has 61772 states and 86921 transitions. [2018-10-27 00:34:16,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:34:16,236 INFO L276 IsEmpty]: Start isEmpty. Operand 61772 states and 86921 transitions. [2018-10-27 00:34:16,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-27 00:34:16,243 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:34:16,243 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 00:34:16,243 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:34:16,244 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:34:16,244 INFO L82 PathProgramCache]: Analyzing trace with hash 866356209, now seen corresponding path program 1 times [2018-10-27 00:34:16,244 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:34:16,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:34:16,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:34:16,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:34:16,245 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:34:16,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:34:16,520 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:34:16,521 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:34:16,521 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 00:34:16,521 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:34:16,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 00:34:16,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 00:34:16,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 00:34:16,522 INFO L87 Difference]: Start difference. First operand 61772 states and 86921 transitions. Second operand 5 states. [2018-10-27 00:34:45,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:34:45,165 INFO L93 Difference]: Finished difference Result 187361 states and 274031 transitions. [2018-10-27 00:34:45,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 00:34:45,170 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2018-10-27 00:34:45,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:34:45,596 INFO L225 Difference]: With dead ends: 187361 [2018-10-27 00:34:45,596 INFO L226 Difference]: Without dead ends: 125595 [2018-10-27 00:34:45,735 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 00:34:45,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125595 states. [2018-10-27 00:34:48,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125595 to 124286. [2018-10-27 00:34:48,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124286 states. [2018-10-27 00:34:48,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124286 states to 124286 states and 163323 transitions. [2018-10-27 00:34:48,698 INFO L78 Accepts]: Start accepts. Automaton has 124286 states and 163323 transitions. Word has length 120 [2018-10-27 00:34:48,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:34:48,698 INFO L481 AbstractCegarLoop]: Abstraction has 124286 states and 163323 transitions. [2018-10-27 00:34:48,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 00:34:48,699 INFO L276 IsEmpty]: Start isEmpty. Operand 124286 states and 163323 transitions. [2018-10-27 00:34:48,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-27 00:34:48,702 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:34:48,702 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:34:48,702 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:34:48,702 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:34:48,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1745504638, now seen corresponding path program 1 times [2018-10-27 00:34:48,703 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:34:48,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:34:48,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:34:48,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:34:48,704 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:34:48,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:34:49,034 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 00:34:49,464 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:34:49,465 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:34:49,465 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:34:49,465 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:34:49,466 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:34:49,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:34:49,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:34:49,469 INFO L87 Difference]: Start difference. First operand 124286 states and 163323 transitions. Second operand 6 states. [2018-10-27 00:35:11,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:35:11,218 INFO L93 Difference]: Finished difference Result 280730 states and 388380 transitions. [2018-10-27 00:35:11,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:35:11,219 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 183 [2018-10-27 00:35:11,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:35:11,776 INFO L225 Difference]: With dead ends: 280730 [2018-10-27 00:35:11,776 INFO L226 Difference]: Without dead ends: 156450 [2018-10-27 00:35:11,992 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 00:35:12,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156450 states. [2018-10-27 00:35:15,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156450 to 155507. [2018-10-27 00:35:15,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155507 states. [2018-10-27 00:35:15,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155507 states to 155507 states and 205169 transitions. [2018-10-27 00:35:15,672 INFO L78 Accepts]: Start accepts. Automaton has 155507 states and 205169 transitions. Word has length 183 [2018-10-27 00:35:15,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:35:15,673 INFO L481 AbstractCegarLoop]: Abstraction has 155507 states and 205169 transitions. [2018-10-27 00:35:15,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:35:15,673 INFO L276 IsEmpty]: Start isEmpty. Operand 155507 states and 205169 transitions. [2018-10-27 00:35:15,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2018-10-27 00:35:15,693 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:35:15,693 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:35:15,694 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:35:15,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:35:15,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1365226245, now seen corresponding path program 1 times [2018-10-27 00:35:15,695 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:35:15,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:35:15,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:35:15,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:35:15,697 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:35:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:35:16,320 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:35:16,320 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:35:16,320 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 00:35:16,321 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:35:16,321 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 00:35:16,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 00:35:16,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:35:16,322 INFO L87 Difference]: Start difference. First operand 155507 states and 205169 transitions. Second operand 4 states. [2018-10-27 00:35:37,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:35:37,927 INFO L93 Difference]: Finished difference Result 358949 states and 483027 transitions. [2018-10-27 00:35:37,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 00:35:37,927 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 612 [2018-10-27 00:35:37,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:35:38,421 INFO L225 Difference]: With dead ends: 358949 [2018-10-27 00:35:38,422 INFO L226 Difference]: Without dead ends: 203448 [2018-10-27 00:35:38,722 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:35:38,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203448 states. [2018-10-27 00:35:42,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203448 to 203280. [2018-10-27 00:35:42,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203280 states. [2018-10-27 00:35:43,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203280 states to 203280 states and 254188 transitions. [2018-10-27 00:35:43,058 INFO L78 Accepts]: Start accepts. Automaton has 203280 states and 254188 transitions. Word has length 612 [2018-10-27 00:35:43,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:35:43,060 INFO L481 AbstractCegarLoop]: Abstraction has 203280 states and 254188 transitions. [2018-10-27 00:35:43,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 00:35:43,060 INFO L276 IsEmpty]: Start isEmpty. Operand 203280 states and 254188 transitions. [2018-10-27 00:35:43,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 784 [2018-10-27 00:35:43,098 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:35:43,099 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:35:43,099 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:35:43,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:35:43,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1886061925, now seen corresponding path program 1 times [2018-10-27 00:35:43,100 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:35:43,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:35:43,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:35:43,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:35:43,101 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:35:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:35:45,328 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 135 proven. 69 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-10-27 00:35:45,329 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:35:45,329 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 00:35:45,331 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 784 with the following transitions: [2018-10-27 00:35:45,335 INFO L202 CegarAbsIntRunner]: [0], [1], [3088], [3092], [3096], [3100], [3104], [3108], [3112], [3116], [3127], [3131], [3135], [3146], [3150], [3154], [3158], [3169], [3173], [3184], [3188], [3192], [3196], [3200], [3204], [3208], [3212], [3216], [3220], [3224], [3228], [3232], [3236], [3240], [3251], [3255], [3259], [3263], [3267], [3271], [3275], [3279], [3283], [3287], [3291], [3302], [3306], [3310], [3314], [3318], [3322], [3326], [3330], [3334], [3338], [3342], [3346], [3350], [3361], [3365], [3376], [3380], [3384], [3395], [3399], [3403], [3407], [3418], [3422], [3426], [3430], [3434], [3438], [3442], [3446], [3449], [3454], [3456], [4195], [4196], [4200], [4204], [4208], [4212], [4216], [4220], [4224], [4228], [4232], [4236], [4240], [4244], [4248], [4252], [4256], [4260], [4264], [4268], [4279], [4290], [4294], [4298], [4309], [4313], [4317], [4321], [4325], [4329], [4333], [4337], [4341], [4345], [4349], [4353], [4357], [4361], [4365], [4369], [4373], [4377], [4381], [4385], [4396], [4400], [4404], [4408], [4412], [4416], [4420], [4431], [4435], [4439], [4443], [4454], [4458], [4462], [4466], [4470], [4474], [4478], [4482], [4486], [4490], [4494], [4498], [4502], [4506], [4510], [4514], [4518], [4522], [4526], [4530], [4534], [4538], [4542], [4553], [4557], [4561], [4565], [4569], [4573], [4577], [4581], [4585], [4589], [4593], [4597], [4601], [4605], [4609], [4620], [4624], [4628], [4632], [4636], [4647], [4651], [4655], [4659], [4663], [4667], [4671], [4675], [4679], [4690], [4694], [4698], [4709], [4713], [4717], [4721], [4725], [4729], [4733], [4737], [4741], [4745], [4749], [4753], [4764], [4768], [4772], [4776], [4780], [4784], [4788], [4792], [4803], [4807], [4811], [4815], [4819], [4823], [4827], [4831], [4835], [4839], [4843], [4847], [4858], [4862], [4873], [4877], [4881], [4885], [4896], [4900], [4904], [4908], [4912], [4916], [4920], [4924], [4935], [4939], [4943], [4954], [4958], [4962], [4966], [4970], [4974], [4978], [4982], [4986], [4990], [4994], [4998], [5002], [5006], [5010], [5014], [5018], [5022], [5026], [5030], [5034], [5038], [5042], [5046], [5050], [5054], [5058], [5062], [5066], [5070], [5074], [5078], [5082], [5086], [5090], [5094], [5105], [5109], [5120], [5124], [5128], [5132], [5136], [5140], [5144], [5148], [5152], [5156], [5167], [5171], [5175], [5179], [5183], [5187], [5191], [5195], [5199], [5203], [5207], [5211], [5215], [5219], [5223], [5225], [5226], [5227], [5234], [5242], [5250], [5258], [5266], [5270], [5272], [5275], [5283], [5291], [5299], [5307], [5315], [5323], [5331], [5339], [5347], [5355], [5363], [5371], [5379], [5387], [5395], [5403], [5411], [5419], [5427], [5435], [5443], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5719], [5722], [5726], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5877], [5878], [5882], [5886], [5890], [5894], [5898], [5902], [5906], [5910], [5914], [5918], [5922], [5926], [5930], [5934], [5938], [5942], [5946], [5950], [5954], [5958], [5962], [5966], [5977], [5981], [5985], [5996], [6000], [6004], [6008], [6012], [6016], [6020], [6024], [6028], [6032], [6036], [6040], [6051], [6055], [6059], [6063], [6067], [6071], [6075], [6079], [6083], [6087], [6091], [6102], [6106], [6110], [6121], [6125], [6129], [6140], [6144], [6148], [6152], [6156], [6160], [6164], [6168], [6172], [6176], [6180], [6184], [6188], [6192], [6196], [6200], [6204], [6208], [6212], [6216], [6220], [6224], [6228], [6232], [6236], [6240], [6251], [6255], [6259], [6263], [6267], [6278], [6282], [6286], [6290], [6294], [6298], [6302], [6306], [6310], [6314], [6325], [6329], [6333], [6344], [6348], [6352], [6356], [6360], [6371], [6375], [6379], [6383], [6387], [6391], [6402], [6413], [6417], [6421], [6425], [6429], [6440], [6444], [6455], [6459], [6463], [6467], [6471], [6475], [6486], [6490], [6494], [6498], [6502], [6506], [6510], [6514], [6525], [6529], [6533], [6537], [6541], [6545], [6549], [6553], [6557], [6561], [6565], [6569], [6573], [6577], [6581], [6585], [6589], [6593], [6604], [6608], [6619], [6623], [6634], [6645], [6649], [6653], [6657], [6661], [6665], [6669], [6673], [6677], [6681], [6685], [6689], [6693], [6697], [6701], [6712], [6716], [6727], [6731], [6735], [6739], [6743], [6747], [6751], [6755], [6759], [6763], [6767], [6771], [6775], [6779], [6783], [6787], [6791], [6795], [6799], [6801], [6802], [6806], [6810], [6816], [6820], [6822], [6833], [6834], [6835], [6836], [6837], [6838], [6839], [6841], [6842] [2018-10-27 00:35:45,486 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 00:35:45,486 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-27 00:35:53,107 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-27 00:35:53,108 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-27 00:35:53,109 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 00:35:53,109 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:35:53,109 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 00:35:53,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:35:53,119 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 00:35:53,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:35:53,404 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 00:35:53,473 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-27 00:35:53,675 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 00:35:53,675 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 00:35:53,680 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 00:35:53,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:35:53 BoogieIcfgContainer [2018-10-27 00:35:53,681 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 00:35:53,682 INFO L168 Benchmark]: Toolchain (without parser) took 231591.97 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 766.8 MB. Max. memory is 7.1 GB. [2018-10-27 00:35:53,683 INFO L168 Benchmark]: CDTParser took 0.22 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 00:35:53,684 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3391.99 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-10-27 00:35:53,685 INFO L168 Benchmark]: Boogie Procedure Inliner took 772.23 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 868.2 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. [2018-10-27 00:35:53,686 INFO L168 Benchmark]: Boogie Preprocessor took 634.32 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 53.3 MB). Peak memory consumption was 53.3 MB. Max. memory is 7.1 GB. [2018-10-27 00:35:53,686 INFO L168 Benchmark]: RCFGBuilder took 18021.23 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 162.0 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 507.8 MB). Peak memory consumption was 669.8 MB. Max. memory is 7.1 GB. [2018-10-27 00:35:53,687 INFO L168 Benchmark]: TraceAbstraction took 208766.08 ms. Allocated memory was 2.6 GB in the beginning and 3.8 GB in the end (delta: 1.2 GB). Free memory was 1.7 GB in the beginning and 2.9 GB in the end (delta: -1.1 GB). Peak memory consumption was 55.3 MB. Max. memory is 7.1 GB. [2018-10-27 00:35:53,693 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 3391.99 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 772.23 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 868.2 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 634.32 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 53.3 MB). Peak memory consumption was 53.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 18021.23 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 162.0 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 507.8 MB). Peak memory consumption was 669.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208766.08 ms. Allocated memory was 2.6 GB in the beginning and 3.8 GB in the end (delta: 1.2 GB). Free memory was 1.7 GB in the beginning and 2.9 GB in the end (delta: -1.1 GB). Peak memory consumption was 55.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 49). Cancelled while BasicCegarLoop was analyzing trace of length 784 with TraceHistMax 4,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 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 208.6s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 179.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5249 SDtfs, 42851 SDslu, 5153 SDs, 0 SdLazy, 68241 SolverSat, 16596 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 150.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=203280occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.7s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 13.7s AutomataMinimizationTime, 7 MinimizatonAttempts, 3109 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 1215 NumberOfCodeBlocks, 1215 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1208 ConstructedInterpolants, 0 QuantifiedInterpolants, 789828 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 66/66 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown