java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label16_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:56:20,936 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:56:20,939 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:56:20,952 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:56:20,952 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:56:20,953 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:56:20,954 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:56:20,956 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:56:20,958 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:56:20,959 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:56:20,960 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:56:20,960 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:56:20,961 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:56:20,962 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:56:20,963 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:56:20,964 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:56:20,965 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:56:20,967 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:56:20,969 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:56:20,971 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:56:20,972 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:56:20,974 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:56:20,976 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 21:56:20,977 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 21:56:20,977 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 21:56:20,978 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 21:56:20,979 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 21:56:20,980 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 21:56:20,980 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 21:56:20,982 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 21:56:20,982 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 21:56:20,983 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 21:56:20,983 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:56:20,983 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:56:20,984 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:56:20,985 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:56:20,985 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:56:21,001 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:56:21,001 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:56:21,002 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:56:21,002 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:56:21,002 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:56:21,002 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:56:21,003 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:56:21,003 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:56:21,003 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:56:21,003 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:56:21,003 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:56:21,004 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:56:21,004 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:56:21,004 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:56:21,005 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:56:21,005 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:56:21,005 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:56:21,005 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:56:21,005 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:56:21,006 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:56:21,006 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:56:21,006 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:56:21,006 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:56:21,007 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:56:21,007 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:56:21,007 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:56:21,007 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:56:21,007 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:56:21,008 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:56:21,008 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:56:21,008 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:56:21,008 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:56:21,008 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:56:21,008 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:56:21,056 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:56:21,074 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:56:21,078 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:56:21,079 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:56:21,080 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:56:21,081 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label16_true-unreach-call.c [2018-10-24 21:56:21,151 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bc73eb7d4/41ff74fa7cd441f38bb82ae86ff99c79/FLAG004ff27e0 [2018-10-24 21:56:21,892 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:56:21,893 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label16_true-unreach-call.c [2018-10-24 21:56:21,913 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bc73eb7d4/41ff74fa7cd441f38bb82ae86ff99c79/FLAG004ff27e0 [2018-10-24 21:56:21,929 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bc73eb7d4/41ff74fa7cd441f38bb82ae86ff99c79 [2018-10-24 21:56:21,940 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:56:21,942 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:56:21,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:56:21,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:56:21,947 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:56:21,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:56:21" (1/1) ... [2018-10-24 21:56:21,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14b692d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:21, skipping insertion in model container [2018-10-24 21:56:21,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:56:21" (1/1) ... [2018-10-24 21:56:21,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:56:22,049 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:56:22,692 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:56:22,697 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:56:22,979 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:56:23,001 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:56:23,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:23 WrapperNode [2018-10-24 21:56:23,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:56:23,003 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:56:23,003 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:56:23,003 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:56:23,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:23" (1/1) ... [2018-10-24 21:56:23,060 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:23" (1/1) ... [2018-10-24 21:56:23,326 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:56:23,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:56:23,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:56:23,327 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:56:23,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:23" (1/1) ... [2018-10-24 21:56:23,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:23" (1/1) ... [2018-10-24 21:56:23,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:23" (1/1) ... [2018-10-24 21:56:23,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:23" (1/1) ... [2018-10-24 21:56:23,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:23" (1/1) ... [2018-10-24 21:56:23,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:23" (1/1) ... [2018-10-24 21:56:23,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:23" (1/1) ... [2018-10-24 21:56:23,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:56:23,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:56:23,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:56:23,484 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:56:23,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:56:23,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:56:23,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:56:23,557 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:56:23,557 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:56:23,557 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:56:23,557 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:56:23,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:56:23,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:56:23,558 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:56:23,558 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:56:30,707 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:56:30,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:56:30 BoogieIcfgContainer [2018-10-24 21:56:30,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:56:30,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:56:30,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:56:30,714 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:56:30,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:56:21" (1/3) ... [2018-10-24 21:56:30,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@433d0341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:56:30, skipping insertion in model container [2018-10-24 21:56:30,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:23" (2/3) ... [2018-10-24 21:56:30,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@433d0341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:56:30, skipping insertion in model container [2018-10-24 21:56:30,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:56:30" (3/3) ... [2018-10-24 21:56:30,718 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label16_true-unreach-call.c [2018-10-24 21:56:30,727 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:56:30,736 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:56:30,753 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:56:30,804 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:56:30,804 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:56:30,804 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:56:30,805 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:56:30,805 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:56:30,805 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:56:30,805 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:56:30,805 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:56:30,839 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-24 21:56:30,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-24 21:56:30,848 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:56:30,849 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] [2018-10-24 21:56:30,851 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:56:30,858 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:56:30,858 INFO L82 PathProgramCache]: Analyzing trace with hash 657368747, now seen corresponding path program 1 times [2018-10-24 21:56:30,861 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:56:30,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:56:30,915 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:56:30,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:56:30,915 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:56:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:56:31,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:56:31,437 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:56:31,437 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:56:31,437 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:56:31,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:56:31,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:56:31,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:56:31,465 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-24 21:56:36,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:56:36,191 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-24 21:56:36,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:56:36,193 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2018-10-24 21:56:36,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:56:36,218 INFO L225 Difference]: With dead ends: 1156 [2018-10-24 21:56:36,219 INFO L226 Difference]: Without dead ends: 744 [2018-10-24 21:56:36,230 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:56:36,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-24 21:56:36,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-24 21:56:36,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-24 21:56:36,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1317 transitions. [2018-10-24 21:56:36,342 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1317 transitions. Word has length 49 [2018-10-24 21:56:36,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:56:36,343 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1317 transitions. [2018-10-24 21:56:36,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:56:36,344 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1317 transitions. [2018-10-24 21:56:36,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-24 21:56:36,358 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:56:36,358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:56:36,358 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:56:36,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:56:36,361 INFO L82 PathProgramCache]: Analyzing trace with hash 591590536, now seen corresponding path program 1 times [2018-10-24 21:56:36,361 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:56:36,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:56:36,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:56:36,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:56:36,365 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:56:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:56:36,671 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:56:36,672 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:56:36,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:56:36,672 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:56:36,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:56:36,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:56:36,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:56:36,676 INFO L87 Difference]: Start difference. First operand 744 states and 1317 transitions. Second operand 6 states. [2018-10-24 21:56:50,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:56:50,648 INFO L93 Difference]: Finished difference Result 2960 states and 5492 transitions. [2018-10-24 21:56:50,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 21:56:50,651 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-10-24 21:56:50,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:56:50,676 INFO L225 Difference]: With dead ends: 2960 [2018-10-24 21:56:50,677 INFO L226 Difference]: Without dead ends: 2222 [2018-10-24 21:56:50,692 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 21:56:50,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2018-10-24 21:56:50,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 2169. [2018-10-24 21:56:50,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2169 states. [2018-10-24 21:56:50,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 3669 transitions. [2018-10-24 21:56:50,809 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 3669 transitions. Word has length 125 [2018-10-24 21:56:50,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:56:50,810 INFO L481 AbstractCegarLoop]: Abstraction has 2169 states and 3669 transitions. [2018-10-24 21:56:50,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:56:50,810 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 3669 transitions. [2018-10-24 21:56:50,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-24 21:56:50,818 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:56:50,819 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:56:50,819 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:56:50,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:56:50,820 INFO L82 PathProgramCache]: Analyzing trace with hash 975106256, now seen corresponding path program 1 times [2018-10-24 21:56:50,821 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:56:50,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:56:50,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:56:50,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:56:50,823 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:56:50,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:56:51,047 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:56:51,048 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:56:51,048 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:56:51,048 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:56:51,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:56:51,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:56:51,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:56:51,050 INFO L87 Difference]: Start difference. First operand 2169 states and 3669 transitions. Second operand 6 states. [2018-10-24 21:56:56,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:56:56,898 INFO L93 Difference]: Finished difference Result 8029 states and 14212 transitions. [2018-10-24 21:56:56,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:56:56,902 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2018-10-24 21:56:56,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:56:56,943 INFO L225 Difference]: With dead ends: 8029 [2018-10-24 21:56:56,943 INFO L226 Difference]: Without dead ends: 5866 [2018-10-24 21:56:56,976 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:56:56,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5866 states. [2018-10-24 21:56:57,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5866 to 5815. [2018-10-24 21:56:57,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5815 states. [2018-10-24 21:56:57,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5815 states to 5815 states and 8929 transitions. [2018-10-24 21:56:57,149 INFO L78 Accepts]: Start accepts. Automaton has 5815 states and 8929 transitions. Word has length 129 [2018-10-24 21:56:57,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:56:57,150 INFO L481 AbstractCegarLoop]: Abstraction has 5815 states and 8929 transitions. [2018-10-24 21:56:57,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:56:57,150 INFO L276 IsEmpty]: Start isEmpty. Operand 5815 states and 8929 transitions. [2018-10-24 21:56:57,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-24 21:56:57,153 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:56:57,154 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:56:57,154 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:56:57,154 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:56:57,154 INFO L82 PathProgramCache]: Analyzing trace with hash -834708748, now seen corresponding path program 1 times [2018-10-24 21:56:57,154 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:56:57,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:56:57,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:56:57,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:56:57,156 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:56:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:56:57,370 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:56:57,371 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:56:57,371 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:56:57,371 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:56:57,372 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:56:57,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:56:57,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:56:57,373 INFO L87 Difference]: Start difference. First operand 5815 states and 8929 transitions. Second operand 6 states. [2018-10-24 21:57:04,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:57:04,329 INFO L93 Difference]: Finished difference Result 14127 states and 22920 transitions. [2018-10-24 21:57:04,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:57:04,338 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-10-24 21:57:04,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:57:04,389 INFO L225 Difference]: With dead ends: 14127 [2018-10-24 21:57:04,389 INFO L226 Difference]: Without dead ends: 8318 [2018-10-24 21:57:04,433 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:57:04,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8318 states. [2018-10-24 21:57:04,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8318 to 8243. [2018-10-24 21:57:04,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8243 states. [2018-10-24 21:57:04,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8243 states to 8243 states and 12158 transitions. [2018-10-24 21:57:04,653 INFO L78 Accepts]: Start accepts. Automaton has 8243 states and 12158 transitions. Word has length 131 [2018-10-24 21:57:04,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:57:04,653 INFO L481 AbstractCegarLoop]: Abstraction has 8243 states and 12158 transitions. [2018-10-24 21:57:04,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:57:04,653 INFO L276 IsEmpty]: Start isEmpty. Operand 8243 states and 12158 transitions. [2018-10-24 21:57:04,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-24 21:57:04,657 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:57:04,657 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:57:04,657 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:57:04,657 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:57:04,658 INFO L82 PathProgramCache]: Analyzing trace with hash 845250593, now seen corresponding path program 1 times [2018-10-24 21:57:04,658 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:57:04,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:57:04,659 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:57:04,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:57:04,659 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:57:04,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:57:04,908 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:57:05,210 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:57:05,210 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:57:05,210 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:57:05,210 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:57:05,211 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:57:05,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:57:05,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:57:05,212 INFO L87 Difference]: Start difference. First operand 8243 states and 12158 transitions. Second operand 6 states. [2018-10-24 21:57:08,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:57:08,725 INFO L93 Difference]: Finished difference Result 19923 states and 31423 transitions. [2018-10-24 21:57:08,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:57:08,730 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2018-10-24 21:57:08,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:57:08,799 INFO L225 Difference]: With dead ends: 19923 [2018-10-24 21:57:08,799 INFO L226 Difference]: Without dead ends: 11686 [2018-10-24 21:57:08,832 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:57:08,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11686 states. [2018-10-24 21:57:09,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11686 to 11640. [2018-10-24 21:57:09,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11640 states. [2018-10-24 21:57:09,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11640 states to 11640 states and 16576 transitions. [2018-10-24 21:57:09,137 INFO L78 Accepts]: Start accepts. Automaton has 11640 states and 16576 transitions. Word has length 134 [2018-10-24 21:57:09,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:57:09,138 INFO L481 AbstractCegarLoop]: Abstraction has 11640 states and 16576 transitions. [2018-10-24 21:57:09,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:57:09,138 INFO L276 IsEmpty]: Start isEmpty. Operand 11640 states and 16576 transitions. [2018-10-24 21:57:09,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-24 21:57:09,140 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:57:09,141 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:57:09,141 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:57:09,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:57:09,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1926747012, now seen corresponding path program 1 times [2018-10-24 21:57:09,141 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:57:09,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:57:09,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:57:09,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:57:09,143 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:57:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:57:09,408 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:57:09,560 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:57:09,560 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:57:09,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:57:09,560 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:57:09,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:57:09,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:57:09,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:57:09,561 INFO L87 Difference]: Start difference. First operand 11640 states and 16576 transitions. Second operand 6 states. [2018-10-24 21:57:13,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:57:13,557 INFO L93 Difference]: Finished difference Result 25059 states and 36462 transitions. [2018-10-24 21:57:13,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:57:13,558 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-10-24 21:57:13,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:57:13,619 INFO L225 Difference]: With dead ends: 25059 [2018-10-24 21:57:13,619 INFO L226 Difference]: Without dead ends: 13425 [2018-10-24 21:57:13,654 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:57:13,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13425 states. [2018-10-24 21:57:13,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13425 to 13399. [2018-10-24 21:57:13,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13399 states. [2018-10-24 21:57:13,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13399 states to 13399 states and 17766 transitions. [2018-10-24 21:57:13,955 INFO L78 Accepts]: Start accepts. Automaton has 13399 states and 17766 transitions. Word has length 139 [2018-10-24 21:57:13,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:57:13,956 INFO L481 AbstractCegarLoop]: Abstraction has 13399 states and 17766 transitions. [2018-10-24 21:57:13,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:57:13,956 INFO L276 IsEmpty]: Start isEmpty. Operand 13399 states and 17766 transitions. [2018-10-24 21:57:13,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-24 21:57:13,958 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:57:13,958 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:57:13,958 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:57:13,958 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:57:13,959 INFO L82 PathProgramCache]: Analyzing trace with hash 520725928, now seen corresponding path program 1 times [2018-10-24 21:57:13,959 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:57:13,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:57:13,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:57:13,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:57:13,960 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:57:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:57:14,205 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:57:14,428 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-24 21:57:14,429 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:57:14,429 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:57:14,430 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 142 with the following transitions: [2018-10-24 21:57:14,432 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [471], [473], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-24 21:57:14,524 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:57:14,525 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:57:16,468 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:57:24,531 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:57:24,532 INFO L272 AbstractInterpreter]: Visited 99 different actions 377 times. Merged at 5 different actions 14 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:57:24,547 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:57:24,547 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:57:26,752 INFO L232 lantSequenceWeakener]: Weakened 76 states. On average, predicates are now at 79.93% of their original sizes. [2018-10-24 21:57:26,752 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:57:54,027 INFO L413 sIntCurrentIteration]: We have 140 unified AI predicates [2018-10-24 21:57:54,027 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:57:54,028 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:57:54,028 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [4] total 20 [2018-10-24 21:57:54,028 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:57:54,029 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 21:57:54,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 21:57:54,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2018-10-24 21:57:54,030 INFO L87 Difference]: Start difference. First operand 13399 states and 17766 transitions. Second operand 18 states. Received shutdown request... [2018-10-24 22:00:21,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-24 22:00:21,207 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:00:21,213 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:00:21,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:00:21 BoogieIcfgContainer [2018-10-24 22:00:21,213 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:00:21,214 INFO L168 Benchmark]: Toolchain (without parser) took 239273.17 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.9 GB in the end (delta: -2.5 GB). Peak memory consumption was 215.8 MB. Max. memory is 7.1 GB. [2018-10-24 22:00:21,215 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-10-24 22:00:21,216 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1059.27 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-24 22:00:21,216 INFO L168 Benchmark]: Boogie Procedure Inliner took 323.38 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -852.8 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. [2018-10-24 22:00:21,218 INFO L168 Benchmark]: Boogie Preprocessor took 156.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. [2018-10-24 22:00:21,218 INFO L168 Benchmark]: RCFGBuilder took 7225.15 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 259.7 MB). Peak memory consumption was 259.7 MB. Max. memory is 7.1 GB. [2018-10-24 22:00:21,219 INFO L168 Benchmark]: TraceAbstraction took 230503.82 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 3.9 GB in the end (delta: -2.0 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 22:00:21,224 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 1059.27 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 323.38 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -852.8 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 156.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7225.15 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 259.7 MB). Peak memory consumption was 259.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230503.82 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 3.9 GB in the end (delta: -2.0 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 133]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 133). Cancelled while BasicCegarLoop was constructing difference of abstraction (13399states) and FLOYD_HOARE automaton (currently 21 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (2706 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 230.4s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 186.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 696 SDtfs, 11544 SDslu, 721 SDs, 0 SdLazy, 15756 SolverSat, 3916 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 77.9s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 208 GetRequests, 104 SyntacticMatches, 39 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 33.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13399occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9934006211180127 AbsIntWeakeningRatio, 0.14285714285714285 AbsIntAvgWeakeningVarsNumRemoved, 30.22142857142857 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 251 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 848 NumberOfCodeBlocks, 848 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 841 ConstructedInterpolants, 0 QuantifiedInterpolants, 429638 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 214/252 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown