java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label34_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 17:24:16,862 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 17:24:16,864 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 17:24:16,880 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 17:24:16,881 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 17:24:16,882 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 17:24:16,884 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 17:24:16,887 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 17:24:16,890 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 17:24:16,891 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 17:24:16,891 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 17:24:16,892 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 17:24:16,893 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 17:24:16,895 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 17:24:16,904 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 17:24:16,905 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 17:24:16,906 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 17:24:16,907 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 17:24:16,914 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 17:24:16,915 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 17:24:16,918 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 17:24:16,919 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 17:24:16,921 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 17:24:16,921 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 17:24:16,923 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 17:24:16,924 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 17:24:16,925 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 17:24:16,925 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 17:24:16,926 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 17:24:16,929 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 17:24:16,931 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 17:24:16,932 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 17:24:16,932 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 17:24:16,932 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 17:24:16,934 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 17:24:16,935 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 17:24:16,935 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 17:24:16,962 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 17:24:16,963 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 17:24:16,964 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 17:24:16,964 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 17:24:16,964 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 17:24:16,965 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 17:24:16,965 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 17:24:16,965 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 17:24:16,965 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 17:24:16,966 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 17:24:16,966 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 17:24:16,966 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 17:24:16,967 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 17:24:16,968 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 17:24:16,968 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 17:24:16,968 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 17:24:16,968 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 17:24:16,968 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 17:24:16,969 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 17:24:16,970 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 17:24:16,971 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 17:24:16,971 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 17:24:16,971 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 17:24:16,971 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 17:24:16,971 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 17:24:16,972 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 17:24:16,972 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 17:24:16,972 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 17:24:16,972 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 17:24:16,973 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 17:24:16,973 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 17:24:16,973 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 17:24:16,973 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 17:24:16,973 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 17:24:16,974 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 17:24:17,039 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 17:24:17,056 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 17:24:17,060 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 17:24:17,062 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 17:24:17,062 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 17:24:17,063 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label34_true-unreach-call.c [2018-11-12 17:24:17,118 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fda94982a/2d3e1cbef328403294c369845e58e6c5/FLAGcdb415486 [2018-11-12 17:24:17,810 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 17:24:17,811 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label34_true-unreach-call.c [2018-11-12 17:24:17,831 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fda94982a/2d3e1cbef328403294c369845e58e6c5/FLAGcdb415486 [2018-11-12 17:24:17,851 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fda94982a/2d3e1cbef328403294c369845e58e6c5 [2018-11-12 17:24:17,863 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 17:24:17,866 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 17:24:17,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 17:24:17,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 17:24:17,873 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 17:24:17,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 05:24:17" (1/1) ... [2018-11-12 17:24:17,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14041e45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:24:17, skipping insertion in model container [2018-11-12 17:24:17,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 05:24:17" (1/1) ... [2018-11-12 17:24:17,889 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 17:24:17,972 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 17:24:18,697 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 17:24:18,705 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 17:24:18,975 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 17:24:19,002 INFO L193 MainTranslator]: Completed translation [2018-11-12 17:24:19,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:24:19 WrapperNode [2018-11-12 17:24:19,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 17:24:19,004 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 17:24:19,004 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 17:24:19,006 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 17:24:19,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:24:19" (1/1) ... [2018-11-12 17:24:19,219 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:24:19" (1/1) ... [2018-11-12 17:24:19,232 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 17:24:19,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 17:24:19,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 17:24:19,234 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 17:24:19,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:24:19" (1/1) ... [2018-11-12 17:24:19,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:24:19" (1/1) ... [2018-11-12 17:24:19,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:24:19" (1/1) ... [2018-11-12 17:24:19,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:24:19" (1/1) ... [2018-11-12 17:24:19,313 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:24:19" (1/1) ... [2018-11-12 17:24:19,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:24:19" (1/1) ... [2018-11-12 17:24:19,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:24:19" (1/1) ... [2018-11-12 17:24:19,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 17:24:19,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 17:24:19,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 17:24:19,371 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 17:24:19,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:24:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 17:24:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 17:24:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 17:24:19,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 17:24:19,446 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 17:24:19,446 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 17:24:19,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 17:24:19,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 17:24:19,446 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 17:24:19,447 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 17:24:24,197 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 17:24:24,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 05:24:24 BoogieIcfgContainer [2018-11-12 17:24:24,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 17:24:24,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 17:24:24,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 17:24:24,203 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 17:24:24,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 05:24:17" (1/3) ... [2018-11-12 17:24:24,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676d43ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 05:24:24, skipping insertion in model container [2018-11-12 17:24:24,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:24:19" (2/3) ... [2018-11-12 17:24:24,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676d43ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 05:24:24, skipping insertion in model container [2018-11-12 17:24:24,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 05:24:24" (3/3) ... [2018-11-12 17:24:24,212 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label34_true-unreach-call.c [2018-11-12 17:24:24,222 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 17:24:24,235 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 17:24:24,254 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 17:24:24,306 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 17:24:24,306 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 17:24:24,306 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 17:24:24,307 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 17:24:24,307 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 17:24:24,307 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 17:24:24,307 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 17:24:24,307 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 17:24:24,350 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-12 17:24:24,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-11-12 17:24:24,368 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:24:24,369 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:24:24,372 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:24:24,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:24:24,378 INFO L82 PathProgramCache]: Analyzing trace with hash 483318420, now seen corresponding path program 1 times [2018-11-12 17:24:24,381 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:24:24,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:24:24,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:24:24,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:24:24,432 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:24:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:24:25,329 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-12 17:24:25,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:24:25,565 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:24:25,565 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 17:24:25,566 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:24:25,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 17:24:25,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 17:24:25,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 17:24:25,587 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-11-12 17:24:29,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:24:29,273 INFO L93 Difference]: Finished difference Result 1074 states and 1924 transitions. [2018-11-12 17:24:29,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 17:24:29,277 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 197 [2018-11-12 17:24:29,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:24:29,303 INFO L225 Difference]: With dead ends: 1074 [2018-11-12 17:24:29,303 INFO L226 Difference]: Without dead ends: 756 [2018-11-12 17:24:29,311 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 17:24:29,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2018-11-12 17:24:29,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 520. [2018-11-12 17:24:29,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2018-11-12 17:24:29,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 919 transitions. [2018-11-12 17:24:29,408 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 919 transitions. Word has length 197 [2018-11-12 17:24:29,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:24:29,409 INFO L480 AbstractCegarLoop]: Abstraction has 520 states and 919 transitions. [2018-11-12 17:24:29,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 17:24:29,409 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 919 transitions. [2018-11-12 17:24:29,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-11-12 17:24:29,425 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:24:29,425 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:24:29,425 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:24:29,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:24:29,426 INFO L82 PathProgramCache]: Analyzing trace with hash 873411633, now seen corresponding path program 1 times [2018-11-12 17:24:29,426 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:24:29,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:24:29,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:24:29,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:24:29,428 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:24:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:24:29,980 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:24:29,980 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:24:29,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 17:24:29,981 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:24:29,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 17:24:29,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 17:24:29,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 17:24:29,984 INFO L87 Difference]: Start difference. First operand 520 states and 919 transitions. Second operand 6 states. [2018-11-12 17:24:33,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:24:33,884 INFO L93 Difference]: Finished difference Result 1482 states and 2700 transitions. [2018-11-12 17:24:33,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 17:24:33,887 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 225 [2018-11-12 17:24:33,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:24:33,896 INFO L225 Difference]: With dead ends: 1482 [2018-11-12 17:24:33,896 INFO L226 Difference]: Without dead ends: 968 [2018-11-12 17:24:33,899 INFO L604 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 [2018-11-12 17:24:33,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2018-11-12 17:24:33,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 949. [2018-11-12 17:24:33,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 949 states. [2018-11-12 17:24:33,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1579 transitions. [2018-11-12 17:24:33,954 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1579 transitions. Word has length 225 [2018-11-12 17:24:33,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:24:33,954 INFO L480 AbstractCegarLoop]: Abstraction has 949 states and 1579 transitions. [2018-11-12 17:24:33,955 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 17:24:33,955 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1579 transitions. [2018-11-12 17:24:33,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-11-12 17:24:33,961 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:24:33,961 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:24:33,962 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:24:33,962 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:24:33,962 INFO L82 PathProgramCache]: Analyzing trace with hash -2108795236, now seen corresponding path program 1 times [2018-11-12 17:24:33,962 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:24:33,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:24:33,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:24:33,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:24:33,964 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:24:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:24:34,447 WARN L179 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 9 [2018-11-12 17:24:34,634 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:24:34,635 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:24:34,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 17:24:34,635 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:24:34,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 17:24:34,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 17:24:34,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-12 17:24:34,637 INFO L87 Difference]: Start difference. First operand 949 states and 1579 transitions. Second operand 6 states. [2018-11-12 17:24:38,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:24:38,194 INFO L93 Difference]: Finished difference Result 2438 states and 4009 transitions. [2018-11-12 17:24:38,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 17:24:38,196 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 243 [2018-11-12 17:24:38,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:24:38,213 INFO L225 Difference]: With dead ends: 2438 [2018-11-12 17:24:38,214 INFO L226 Difference]: Without dead ends: 1495 [2018-11-12 17:24:38,219 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-12 17:24:38,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2018-11-12 17:24:38,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1450. [2018-11-12 17:24:38,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1450 states. [2018-11-12 17:24:38,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 2315 transitions. [2018-11-12 17:24:38,311 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 2315 transitions. Word has length 243 [2018-11-12 17:24:38,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:24:38,312 INFO L480 AbstractCegarLoop]: Abstraction has 1450 states and 2315 transitions. [2018-11-12 17:24:38,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 17:24:38,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 2315 transitions. [2018-11-12 17:24:38,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-11-12 17:24:38,320 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:24:38,320 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:24:38,321 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:24:38,321 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:24:38,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1365448965, now seen corresponding path program 1 times [2018-11-12 17:24:38,322 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:24:38,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:24:38,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:24:38,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:24:38,323 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:24:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:24:38,599 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 17:24:39,114 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 45 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 17:24:39,115 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:24:39,115 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:24:39,116 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 251 with the following transitions: [2018-11-12 17:24:39,127 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [68], [71], [75], [76], [80], [84], [88], [92], [95], [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], [985], [993], [1001], [1009], [1017], [1025], [1033], [1037], [1039], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:24:39,221 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:24:39,221 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:24:40,739 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 17:24:40,741 INFO L272 AbstractInterpreter]: Visited 198 different actions 198 times. Never merged. Never widened. Performed 3409 root evaluator evaluations with a maximum evaluation depth of 6. Performed 3409 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 88 variables. [2018-11-12 17:24:40,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:24:40,784 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 17:24:42,143 INFO L227 lantSequenceWeakener]: Weakened 239 states. On average, predicates are now at 73.67% of their original sizes. [2018-11-12 17:24:42,144 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 17:24:42,914 INFO L415 sIntCurrentIteration]: We unified 249 AI predicates to 249 [2018-11-12 17:24:42,914 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 17:24:42,915 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:24:42,915 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [6] total 20 [2018-11-12 17:24:42,915 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:24:42,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-12 17:24:42,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-12 17:24:42,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2018-11-12 17:24:42,917 INFO L87 Difference]: Start difference. First operand 1450 states and 2315 transitions. Second operand 16 states. [2018-11-12 17:25:18,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:25:18,760 INFO L93 Difference]: Finished difference Result 3104 states and 4941 transitions. [2018-11-12 17:25:18,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-12 17:25:18,760 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 250 [2018-11-12 17:25:18,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:25:18,769 INFO L225 Difference]: With dead ends: 3104 [2018-11-12 17:25:18,770 INFO L226 Difference]: Without dead ends: 1660 [2018-11-12 17:25:18,774 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 252 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-11-12 17:25:18,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2018-11-12 17:25:18,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1658. [2018-11-12 17:25:18,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1658 states. [2018-11-12 17:25:18,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2533 transitions. [2018-11-12 17:25:18,827 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2533 transitions. Word has length 250 [2018-11-12 17:25:18,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:25:18,828 INFO L480 AbstractCegarLoop]: Abstraction has 1658 states and 2533 transitions. [2018-11-12 17:25:18,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-12 17:25:18,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2533 transitions. [2018-11-12 17:25:18,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-11-12 17:25:18,836 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:25:18,836 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:25:18,837 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:25:18,837 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:25:18,837 INFO L82 PathProgramCache]: Analyzing trace with hash -2002626232, now seen corresponding path program 1 times [2018-11-12 17:25:18,838 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:25:18,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:25:18,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:25:18,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:25:18,839 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:25:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:25:19,127 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 27 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-11-12 17:25:19,128 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:25:19,128 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:25:19,128 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 263 with the following transitions: [2018-11-12 17:25:19,129 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [68], [71], [75], [76], [80], [84], [88], [92], [95], [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], [985], [993], [1001], [1009], [1017], [1025], [1033], [1037], [1039], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:25:19,141 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:25:19,142 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:25:21,922 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 17:25:21,922 INFO L272 AbstractInterpreter]: Visited 202 different actions 400 times. Merged at 5 different actions 7 times. Never widened. Performed 12427 root evaluator evaluations with a maximum evaluation depth of 6. Performed 12427 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-12 17:25:21,928 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:25:21,928 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 17:25:23,864 INFO L227 lantSequenceWeakener]: Weakened 90 states. On average, predicates are now at 81.06% of their original sizes. [2018-11-12 17:25:23,865 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 17:25:29,738 INFO L415 sIntCurrentIteration]: We unified 261 AI predicates to 261 [2018-11-12 17:25:29,738 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 17:25:29,738 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:25:29,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-11-12 17:25:29,739 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:25:29,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-12 17:25:29,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-12 17:25:29,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2018-11-12 17:25:29,740 INFO L87 Difference]: Start difference. First operand 1658 states and 2533 transitions. Second operand 23 states. [2018-11-12 17:26:56,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:26:56,284 INFO L93 Difference]: Finished difference Result 3735 states and 5698 transitions. [2018-11-12 17:26:56,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-12 17:26:56,284 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 262 [2018-11-12 17:26:56,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:26:56,295 INFO L225 Difference]: With dead ends: 3735 [2018-11-12 17:26:56,296 INFO L226 Difference]: Without dead ends: 2291 [2018-11-12 17:26:56,300 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 272 GetRequests, 191 SyntacticMatches, 49 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=231, Invalid=891, Unknown=0, NotChecked=0, Total=1122 [2018-11-12 17:26:56,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2018-11-12 17:26:56,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2286. [2018-11-12 17:26:56,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2286 states. [2018-11-12 17:26:56,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2286 states to 2286 states and 3206 transitions. [2018-11-12 17:26:56,365 INFO L78 Accepts]: Start accepts. Automaton has 2286 states and 3206 transitions. Word has length 262 [2018-11-12 17:26:56,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:26:56,366 INFO L480 AbstractCegarLoop]: Abstraction has 2286 states and 3206 transitions. [2018-11-12 17:26:56,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-12 17:26:56,366 INFO L276 IsEmpty]: Start isEmpty. Operand 2286 states and 3206 transitions. [2018-11-12 17:26:56,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-11-12 17:26:56,374 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:26:56,374 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:26:56,375 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:26:56,375 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:26:56,375 INFO L82 PathProgramCache]: Analyzing trace with hash -380211411, now seen corresponding path program 1 times [2018-11-12 17:26:56,375 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:26:56,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:26:56,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:26:56,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:26:56,377 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:26:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:26:56,917 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-12 17:26:56,972 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:26:56,972 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:26:56,972 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:26:56,973 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 266 with the following transitions: [2018-11-12 17:26:56,973 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], [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], [985], [993], [1001], [1009], [1017], [1025], [1033], [1037], [1039], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:26:56,985 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:26:56,986 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:27:00,653 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 17:27:00,653 INFO L272 AbstractInterpreter]: Visited 202 different actions 602 times. Merged at 7 different actions 20 times. Never widened. Performed 17789 root evaluator evaluations with a maximum evaluation depth of 6. Performed 17789 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 3 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-12 17:27:00,662 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:27:00,663 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 17:27:00,663 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:27:00,664 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-12 17:27:00,673 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:27:00,673 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 17:27:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:27:00,889 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 17:27:01,127 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:27:01,127 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 17:27:01,510 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 42 [2018-11-12 17:27:02,224 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:27:02,247 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 17:27:02,247 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-11-12 17:27:02,247 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 17:27:02,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 17:27:02,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 17:27:02,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-11-12 17:27:02,249 INFO L87 Difference]: Start difference. First operand 2286 states and 3206 transitions. Second operand 7 states. [2018-11-12 17:27:06,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:27:06,836 INFO L93 Difference]: Finished difference Result 7514 states and 13701 transitions. [2018-11-12 17:27:06,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-12 17:27:06,837 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 265 [2018-11-12 17:27:06,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:27:06,889 INFO L225 Difference]: With dead ends: 7514 [2018-11-12 17:27:06,889 INFO L226 Difference]: Without dead ends: 6070 [2018-11-12 17:27:06,912 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 534 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2018-11-12 17:27:06,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6070 states. [2018-11-12 17:27:07,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6070 to 5861. [2018-11-12 17:27:07,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5861 states. [2018-11-12 17:27:07,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5861 states to 5861 states and 8888 transitions. [2018-11-12 17:27:07,151 INFO L78 Accepts]: Start accepts. Automaton has 5861 states and 8888 transitions. Word has length 265 [2018-11-12 17:27:07,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:27:07,152 INFO L480 AbstractCegarLoop]: Abstraction has 5861 states and 8888 transitions. [2018-11-12 17:27:07,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 17:27:07,152 INFO L276 IsEmpty]: Start isEmpty. Operand 5861 states and 8888 transitions. [2018-11-12 17:27:07,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-11-12 17:27:07,175 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:27:07,176 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 17:27:07,176 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:27:07,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:27:07,177 INFO L82 PathProgramCache]: Analyzing trace with hash 621799793, now seen corresponding path program 1 times [2018-11-12 17:27:07,177 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:27:07,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:27:07,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:27:07,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:27:07,178 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:27:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:27:07,723 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 143 proven. 45 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-11-12 17:27:07,724 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:27:07,724 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:27:07,724 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 325 with the following transitions: [2018-11-12 17:27:07,724 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], [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], [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], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1037], [1039], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:27:07,730 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:27:07,730 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:27:11,118 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 17:27:11,118 INFO L272 AbstractInterpreter]: Visited 203 different actions 602 times. Merged at 7 different actions 17 times. Never widened. Performed 16885 root evaluator evaluations with a maximum evaluation depth of 6. Performed 16885 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 3 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-12 17:27:11,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:27:11,126 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 17:27:11,126 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:27:11,126 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-12 17:27:11,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:27:11,134 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 17:27:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:27:11,357 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 17:27:11,677 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-11-12 17:27:11,677 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 17:27:11,847 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-11-12 17:27:12,197 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 128 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 17:27:12,218 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 17:27:12,218 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 16 [2018-11-12 17:27:12,218 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 17:27:12,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-12 17:27:12,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-12 17:27:12,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-11-12 17:27:12,220 INFO L87 Difference]: Start difference. First operand 5861 states and 8888 transitions. Second operand 12 states. [2018-11-12 17:27:28,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:27:28,019 INFO L93 Difference]: Finished difference Result 31947 states and 57743 transitions. [2018-11-12 17:27:28,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-11-12 17:27:28,020 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 324 [2018-11-12 17:27:28,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:27:28,206 INFO L225 Difference]: With dead ends: 31947 [2018-11-12 17:27:28,206 INFO L226 Difference]: Without dead ends: 27136 [2018-11-12 17:27:28,297 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 825 GetRequests, 724 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3938 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1594, Invalid=8912, Unknown=0, NotChecked=0, Total=10506 [2018-11-12 17:27:28,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27136 states. [2018-11-12 17:27:29,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27136 to 26027. [2018-11-12 17:27:29,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26027 states. [2018-11-12 17:27:29,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26027 states to 26027 states and 36901 transitions. [2018-11-12 17:27:29,629 INFO L78 Accepts]: Start accepts. Automaton has 26027 states and 36901 transitions. Word has length 324 [2018-11-12 17:27:29,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:27:29,630 INFO L480 AbstractCegarLoop]: Abstraction has 26027 states and 36901 transitions. [2018-11-12 17:27:29,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-12 17:27:29,630 INFO L276 IsEmpty]: Start isEmpty. Operand 26027 states and 36901 transitions. [2018-11-12 17:27:29,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-11-12 17:27:29,707 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:27:29,707 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:27:29,707 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:27:29,708 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:27:29,708 INFO L82 PathProgramCache]: Analyzing trace with hash -392446574, now seen corresponding path program 1 times [2018-11-12 17:27:29,708 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:27:29,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:27:29,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:27:29,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:27:29,709 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:27:29,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:27:30,338 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 154 proven. 14 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-11-12 17:27:30,338 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:27:30,339 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:27:30,339 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 349 with the following transitions: [2018-11-12 17:27:30,339 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [20], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [95], [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], [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], [985], [993], [1001], [1009], [1017], [1025], [1033], [1037], [1039], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:27:30,345 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:27:30,346 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:27:35,240 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 17:27:35,241 INFO L272 AbstractInterpreter]: Visited 206 different actions 823 times. Merged at 9 different actions 38 times. Never widened. Performed 18818 root evaluator evaluations with a maximum evaluation depth of 6. Performed 18818 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 9 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-12 17:27:35,253 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:27:35,253 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 17:27:35,253 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:27:35,253 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-12 17:27:35,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:27:35,265 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 17:27:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:27:35,505 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 17:27:36,078 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 195 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-12 17:27:36,078 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 17:27:36,880 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 195 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-12 17:27:36,902 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 17:27:36,903 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2018-11-12 17:27:36,903 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 17:27:36,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-12 17:27:36,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-12 17:27:36,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-11-12 17:27:36,905 INFO L87 Difference]: Start difference. First operand 26027 states and 36901 transitions. Second operand 8 states. [2018-11-12 17:27:43,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:27:43,466 INFO L93 Difference]: Finished difference Result 71172 states and 113300 transitions. [2018-11-12 17:27:43,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-12 17:27:43,467 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 348 [2018-11-12 17:27:43,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:27:43,704 INFO L225 Difference]: With dead ends: 71172 [2018-11-12 17:27:43,704 INFO L226 Difference]: Without dead ends: 47215 [2018-11-12 17:27:43,792 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 752 GetRequests, 715 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=249, Invalid=1011, Unknown=0, NotChecked=0, Total=1260 [2018-11-12 17:27:43,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47215 states. [2018-11-12 17:27:45,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47215 to 45334. [2018-11-12 17:27:45,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45334 states. [2018-11-12 17:27:45,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45334 states to 45334 states and 60066 transitions. [2018-11-12 17:27:45,272 INFO L78 Accepts]: Start accepts. Automaton has 45334 states and 60066 transitions. Word has length 348 [2018-11-12 17:27:45,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:27:45,272 INFO L480 AbstractCegarLoop]: Abstraction has 45334 states and 60066 transitions. [2018-11-12 17:27:45,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-12 17:27:45,273 INFO L276 IsEmpty]: Start isEmpty. Operand 45334 states and 60066 transitions. [2018-11-12 17:27:45,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-11-12 17:27:45,360 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:27:45,360 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:27:45,360 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:27:45,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:27:45,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1841100441, now seen corresponding path program 1 times [2018-11-12 17:27:45,361 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:27:45,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:27:45,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:27:45,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:27:45,362 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:27:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:27:46,016 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 177 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:27:46,017 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:27:46,017 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:27:46,017 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 347 with the following transitions: [2018-11-12 17:27:46,018 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], [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], [491], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1037], [1039], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:27:46,022 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:27:46,023 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:27:47,489 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 17:27:47,490 INFO L272 AbstractInterpreter]: Visited 201 different actions 395 times. Merged at 4 different actions 4 times. Never widened. Performed 7898 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7898 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-12 17:27:47,499 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:27:47,499 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 17:27:49,238 INFO L227 lantSequenceWeakener]: Weakened 343 states. On average, predicates are now at 72.52% of their original sizes. [2018-11-12 17:27:49,238 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 17:27:49,648 INFO L415 sIntCurrentIteration]: We unified 345 AI predicates to 345 [2018-11-12 17:27:49,649 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 17:27:49,649 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:27:49,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [7] total 23 [2018-11-12 17:27:49,649 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:27:49,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-12 17:27:49,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-12 17:27:49,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2018-11-12 17:27:49,650 INFO L87 Difference]: Start difference. First operand 45334 states and 60066 transitions. Second operand 18 states. Received shutdown request... [2018-11-12 17:28:10,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-12 17:28:10,858 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 17:28:10,863 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 17:28:10,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 05:28:10 BoogieIcfgContainer [2018-11-12 17:28:10,864 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 17:28:10,864 INFO L168 Benchmark]: Toolchain (without parser) took 232999.89 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 995.9 MB in the end (delta: 402.3 MB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2018-11-12 17:28:10,866 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 17:28:10,867 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1137.12 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-12 17:28:10,868 INFO L168 Benchmark]: Boogie Procedure Inliner took 228.26 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 728.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -861.4 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. [2018-11-12 17:28:10,869 INFO L168 Benchmark]: Boogie Preprocessor took 136.80 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 17:28:10,869 INFO L168 Benchmark]: RCFGBuilder took 4827.68 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 251.9 MB). Peak memory consumption was 251.9 MB. Max. memory is 7.1 GB. [2018-11-12 17:28:10,870 INFO L168 Benchmark]: TraceAbstraction took 226664.28 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 995.9 MB in the end (delta: 927.2 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-11-12 17:28:10,875 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1137.12 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 228.26 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 728.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -861.4 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.80 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4827.68 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 251.9 MB). Peak memory consumption was 251.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226664.28 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 995.9 MB in the end (delta: 927.2 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1605]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1605). Cancelled while BasicCegarLoop was constructing difference of abstraction (45334states) and FLOYD_HOARE automaton (currently 14 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (4932 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 226.5s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 182.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1782 SDtfs, 17794 SDslu, 3579 SDs, 0 SdLazy, 29648 SolverSat, 6009 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 113.7s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 3032 GetRequests, 2735 SyntacticMatches, 57 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4963 ImplicationChecksByTransitivity, 14.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45334occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 17.9s AbstIntTime, 6 AbstIntIterations, 3 AbstIntStrong, 0.9992097181120746 AbsIntWeakeningRatio, 0.2409356725146199 AbsIntAvgWeakeningVarsNumRemoved, 51.97192982456141 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 3506 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 7.9s InterpolantComputationTime, 3397 NumberOfCodeBlocks, 3397 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 4319 ConstructedInterpolants, 0 QuantifiedInterpolants, 3908495 SizeOfPredicates, 20 NumberOfNonLiveVariables, 3866 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 15 InterpolantComputations, 3 PerfectInterpolantSequences, 1737/1934 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown