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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label10_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 07:31:44,960 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 07:31:44,962 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 07:31:44,976 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 07:31:44,976 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 07:31:44,977 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 07:31:44,979 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 07:31:44,980 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 07:31:44,982 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 07:31:44,983 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 07:31:44,984 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 07:31:44,984 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 07:31:44,985 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 07:31:44,986 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 07:31:44,987 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 07:31:44,988 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 07:31:44,989 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 07:31:44,990 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 07:31:44,992 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 07:31:44,994 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 07:31:44,995 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 07:31:44,996 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 07:31:44,999 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 07:31:44,999 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 07:31:44,999 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 07:31:45,000 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 07:31:45,001 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 07:31:45,002 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 07:31:45,003 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 07:31:45,004 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 07:31:45,004 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 07:31:45,005 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 07:31:45,005 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 07:31:45,005 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 07:31:45,006 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 07:31:45,007 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 07:31:45,007 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 07:31:45,037 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 07:31:45,038 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 07:31:45,038 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 07:31:45,039 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 07:31:45,039 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 07:31:45,039 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 07:31:45,039 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 07:31:45,039 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 07:31:45,040 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 07:31:45,040 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 07:31:45,040 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 07:31:45,040 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 07:31:45,040 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 07:31:45,040 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 07:31:45,041 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 07:31:45,041 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 07:31:45,041 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 07:31:45,042 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 07:31:45,042 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 07:31:45,042 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 07:31:45,042 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 07:31:45,042 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 07:31:45,043 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 07:31:45,043 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 07:31:45,043 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 07:31:45,043 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 07:31:45,043 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 07:31:45,044 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 07:31:45,044 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 07:31:45,044 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 07:31:45,044 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 07:31:45,044 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 07:31:45,045 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 07:31:45,045 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 07:31:45,045 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 07:31:45,045 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 07:31:45,091 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 07:31:45,104 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 07:31:45,108 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 07:31:45,109 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 07:31:45,110 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 07:31:45,110 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label10_true-unreach-call.c [2018-10-27 07:31:45,177 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b1e963fcc/ae859f184c1b45c0a1c777d547e6c3ea/FLAG42bcbc042 [2018-10-27 07:31:45,848 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 07:31:45,849 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label10_true-unreach-call.c [2018-10-27 07:31:45,863 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b1e963fcc/ae859f184c1b45c0a1c777d547e6c3ea/FLAG42bcbc042 [2018-10-27 07:31:45,879 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b1e963fcc/ae859f184c1b45c0a1c777d547e6c3ea [2018-10-27 07:31:45,891 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 07:31:45,893 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 07:31:45,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 07:31:45,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 07:31:45,900 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 07:31:45,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:31:45" (1/1) ... [2018-10-27 07:31:45,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ea74f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:31:45, skipping insertion in model container [2018-10-27 07:31:45,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:31:45" (1/1) ... [2018-10-27 07:31:45,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 07:31:46,000 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 07:31:46,643 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:31:46,648 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 07:31:46,811 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:31:46,835 INFO L193 MainTranslator]: Completed translation [2018-10-27 07:31:46,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:31:46 WrapperNode [2018-10-27 07:31:46,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 07:31:46,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 07:31:46,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 07:31:46,837 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 07:31:46,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:31:46" (1/1) ... [2018-10-27 07:31:46,892 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:31:46" (1/1) ... [2018-10-27 07:31:47,129 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 07:31:47,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 07:31:47,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 07:31:47,130 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 07:31:47,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:31:46" (1/1) ... [2018-10-27 07:31:47,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:31:46" (1/1) ... [2018-10-27 07:31:47,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:31:46" (1/1) ... [2018-10-27 07:31:47,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:31:46" (1/1) ... [2018-10-27 07:31:47,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:31:46" (1/1) ... [2018-10-27 07:31:47,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:31:46" (1/1) ... [2018-10-27 07:31:47,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:31:46" (1/1) ... [2018-10-27 07:31:47,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 07:31:47,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 07:31:47,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 07:31:47,284 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 07:31:47,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:31:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 07:31:47,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 07:31:47,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 07:31:47,357 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 07:31:47,357 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 07:31:47,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 07:31:47,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 07:31:47,359 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 07:31:47,359 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 07:31:52,865 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 07:31:52,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:31:52 BoogieIcfgContainer [2018-10-27 07:31:52,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 07:31:52,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 07:31:52,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 07:31:52,871 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 07:31:52,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:31:45" (1/3) ... [2018-10-27 07:31:52,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5caceeb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:31:52, skipping insertion in model container [2018-10-27 07:31:52,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:31:46" (2/3) ... [2018-10-27 07:31:52,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5caceeb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:31:52, skipping insertion in model container [2018-10-27 07:31:52,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:31:52" (3/3) ... [2018-10-27 07:31:52,875 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label10_true-unreach-call.c [2018-10-27 07:31:52,885 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 07:31:52,898 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 07:31:52,919 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 07:31:52,975 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 07:31:52,976 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 07:31:52,976 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 07:31:52,976 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 07:31:52,977 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 07:31:52,977 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 07:31:52,977 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 07:31:52,977 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 07:31:53,021 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-27 07:31:53,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-27 07:31:53,028 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:31:53,030 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] [2018-10-27 07:31:53,032 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:31:53,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:31:53,041 INFO L82 PathProgramCache]: Analyzing trace with hash -250768471, now seen corresponding path program 1 times [2018-10-27 07:31:53,044 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:31:53,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:31:53,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:31:53,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:31:53,097 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:31:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:31:53,520 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-27 07:31:53,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:31:53,532 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:31:53,532 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 07:31:53,533 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:31:53,539 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 07:31:53,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 07:31:53,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 07:31:53,561 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-27 07:31:57,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:31:57,780 INFO L93 Difference]: Finished difference Result 1001 states and 1780 transitions. [2018-10-27 07:31:57,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 07:31:57,783 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-10-27 07:31:57,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:31:57,808 INFO L225 Difference]: With dead ends: 1001 [2018-10-27 07:31:57,809 INFO L226 Difference]: Without dead ends: 702 [2018-10-27 07:31:57,819 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 07:31:57,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2018-10-27 07:31:57,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 699. [2018-10-27 07:31:57,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2018-10-27 07:31:57,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1082 transitions. [2018-10-27 07:31:57,923 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1082 transitions. Word has length 29 [2018-10-27 07:31:57,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:31:57,924 INFO L481 AbstractCegarLoop]: Abstraction has 699 states and 1082 transitions. [2018-10-27 07:31:57,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 07:31:57,924 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1082 transitions. [2018-10-27 07:31:57,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-27 07:31:57,930 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:31:57,931 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:31:57,931 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:31:57,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:31:57,932 INFO L82 PathProgramCache]: Analyzing trace with hash -2105116581, now seen corresponding path program 1 times [2018-10-27 07:31:57,932 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:31:57,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:31:57,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:31:57,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:31:57,934 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:31:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:31:58,291 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:31:58,291 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:31:58,291 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:31:58,292 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:31:58,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:31:58,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:31:58,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:31:58,295 INFO L87 Difference]: Start difference. First operand 699 states and 1082 transitions. Second operand 6 states. [2018-10-27 07:32:03,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:32:03,019 INFO L93 Difference]: Finished difference Result 2534 states and 4100 transitions. [2018-10-27 07:32:03,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:32:03,022 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-10-27 07:32:03,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:32:03,040 INFO L225 Difference]: With dead ends: 2534 [2018-10-27 07:32:03,040 INFO L226 Difference]: Without dead ends: 1841 [2018-10-27 07:32:03,048 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 [2018-10-27 07:32:03,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2018-10-27 07:32:03,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1815. [2018-10-27 07:32:03,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1815 states. [2018-10-27 07:32:03,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 2683 transitions. [2018-10-27 07:32:03,134 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 2683 transitions. Word has length 102 [2018-10-27 07:32:03,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:32:03,134 INFO L481 AbstractCegarLoop]: Abstraction has 1815 states and 2683 transitions. [2018-10-27 07:32:03,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:32:03,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 2683 transitions. [2018-10-27 07:32:03,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-27 07:32:03,139 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:32:03,139 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:32:03,140 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:32:03,140 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:32:03,140 INFO L82 PathProgramCache]: Analyzing trace with hash 367698756, now seen corresponding path program 1 times [2018-10-27 07:32:03,140 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:32:03,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:32:03,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:32:03,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:32:03,142 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:32:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:32:03,353 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:32:03,353 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:32:03,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 07:32:03,354 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:32:03,354 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 07:32:03,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 07:32:03,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 07:32:03,355 INFO L87 Difference]: Start difference. First operand 1815 states and 2683 transitions. Second operand 4 states. [2018-10-27 07:32:06,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:32:06,007 INFO L93 Difference]: Finished difference Result 4796 states and 7372 transitions. [2018-10-27 07:32:06,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 07:32:06,010 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2018-10-27 07:32:06,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:32:06,031 INFO L225 Difference]: With dead ends: 4796 [2018-10-27 07:32:06,031 INFO L226 Difference]: Without dead ends: 2987 [2018-10-27 07:32:06,044 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 07:32:06,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2987 states. [2018-10-27 07:32:06,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2987 to 2970. [2018-10-27 07:32:06,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2970 states. [2018-10-27 07:32:06,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 4362 transitions. [2018-10-27 07:32:06,149 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 4362 transitions. Word has length 103 [2018-10-27 07:32:06,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:32:06,151 INFO L481 AbstractCegarLoop]: Abstraction has 2970 states and 4362 transitions. [2018-10-27 07:32:06,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 07:32:06,151 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 4362 transitions. [2018-10-27 07:32:06,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-27 07:32:06,161 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:32:06,161 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:32:06,161 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:32:06,161 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:32:06,162 INFO L82 PathProgramCache]: Analyzing trace with hash -537163217, now seen corresponding path program 1 times [2018-10-27 07:32:06,162 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:32:06,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:32:06,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:32:06,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:32:06,167 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:32:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:32:06,581 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:32:06,582 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:32:06,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:32:06,582 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:32:06,583 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:32:06,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:32:06,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:32:06,584 INFO L87 Difference]: Start difference. First operand 2970 states and 4362 transitions. Second operand 6 states. [2018-10-27 07:32:10,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:32:10,862 INFO L93 Difference]: Finished difference Result 11412 states and 20997 transitions. [2018-10-27 07:32:10,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 07:32:10,864 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2018-10-27 07:32:10,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:32:10,969 INFO L225 Difference]: With dead ends: 11412 [2018-10-27 07:32:10,969 INFO L226 Difference]: Without dead ends: 8448 [2018-10-27 07:32:11,061 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 07:32:11,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8448 states. [2018-10-27 07:32:11,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8448 to 7652. [2018-10-27 07:32:11,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7652 states. [2018-10-27 07:32:11,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7652 states to 7652 states and 11186 transitions. [2018-10-27 07:32:11,433 INFO L78 Accepts]: Start accepts. Automaton has 7652 states and 11186 transitions. Word has length 128 [2018-10-27 07:32:11,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:32:11,434 INFO L481 AbstractCegarLoop]: Abstraction has 7652 states and 11186 transitions. [2018-10-27 07:32:11,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:32:11,434 INFO L276 IsEmpty]: Start isEmpty. Operand 7652 states and 11186 transitions. [2018-10-27 07:32:11,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-27 07:32:11,442 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:32:11,442 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 07:32:11,442 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:32:11,443 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:32:11,443 INFO L82 PathProgramCache]: Analyzing trace with hash -388558922, now seen corresponding path program 1 times [2018-10-27 07:32:11,443 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:32:11,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:32:11,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:32:11,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:32:11,446 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:32:11,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:32:11,804 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:32:11,805 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:32:11,805 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:32:11,806 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 177 with the following transitions: [2018-10-27 07:32:11,808 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [502], [503], [507], [511], [514], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:32:11,856 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:32:11,856 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:32:12,296 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 07:32:12,297 INFO L272 AbstractInterpreter]: Visited 80 different actions 80 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-27 07:32:12,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:32:12,358 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 07:32:12,901 INFO L227 lantSequenceWeakener]: Weakened 167 states. On average, predicates are now at 73.2% of their original sizes. [2018-10-27 07:32:12,902 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 07:32:13,119 INFO L415 sIntCurrentIteration]: We unified 175 AI predicates to 175 [2018-10-27 07:32:13,119 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 07:32:13,120 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 07:32:13,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-27 07:32:13,121 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:32:13,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:32:13,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:32:13,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:32:13,122 INFO L87 Difference]: Start difference. First operand 7652 states and 11186 transitions. Second operand 6 states. [2018-10-27 07:32:57,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:32:57,205 INFO L93 Difference]: Finished difference Result 15490 states and 22585 transitions. [2018-10-27 07:32:57,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 07:32:57,205 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2018-10-27 07:32:57,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:32:57,253 INFO L225 Difference]: With dead ends: 15490 [2018-10-27 07:32:57,253 INFO L226 Difference]: Without dead ends: 7844 [2018-10-27 07:32:57,282 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 07:32:57,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7844 states. [2018-10-27 07:32:57,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7844 to 7842. [2018-10-27 07:32:57,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7842 states. [2018-10-27 07:32:57,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7842 states to 7842 states and 11387 transitions. [2018-10-27 07:32:57,542 INFO L78 Accepts]: Start accepts. Automaton has 7842 states and 11387 transitions. Word has length 176 [2018-10-27 07:32:57,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:32:57,542 INFO L481 AbstractCegarLoop]: Abstraction has 7842 states and 11387 transitions. [2018-10-27 07:32:57,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:32:57,543 INFO L276 IsEmpty]: Start isEmpty. Operand 7842 states and 11387 transitions. [2018-10-27 07:32:57,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-10-27 07:32:57,549 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:32:57,549 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 07:32:57,552 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:32:57,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:32:57,553 INFO L82 PathProgramCache]: Analyzing trace with hash 987927268, now seen corresponding path program 1 times [2018-10-27 07:32:57,553 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:32:57,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:32:57,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:32:57,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:32:57,555 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:32:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:32:58,128 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:32:58,128 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:32:58,128 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:32:58,129 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 234 with the following transitions: [2018-10-27 07:32:58,130 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [502], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:32:58,141 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:32:58,142 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:32:58,457 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 07:32:58,457 INFO L272 AbstractInterpreter]: Visited 141 different actions 409 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-27 07:32:58,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:32:58,464 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 07:32:58,465 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:32:58,465 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 07:32:58,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:32:58,477 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 07:32:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:32:58,588 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 07:32:58,987 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:32:58,987 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 07:32:59,250 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-27 07:32:59,605 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:32:59,636 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 07:32:59,637 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-27 07:32:59,637 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 07:32:59,638 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 07:32:59,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 07:32:59,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-27 07:32:59,639 INFO L87 Difference]: Start difference. First operand 7842 states and 11387 transitions. Second operand 9 states. [2018-10-27 07:33:08,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:33:08,523 INFO L93 Difference]: Finished difference Result 21971 states and 42575 transitions. [2018-10-27 07:33:08,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-27 07:33:08,524 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 233 [2018-10-27 07:33:08,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:33:08,663 INFO L225 Difference]: With dead ends: 21971 [2018-10-27 07:33:08,664 INFO L226 Difference]: Without dead ends: 14325 [2018-10-27 07:33:08,809 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 469 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2018-10-27 07:33:08,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14325 states. [2018-10-27 07:33:09,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14325 to 14166. [2018-10-27 07:33:09,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14166 states. [2018-10-27 07:33:09,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14166 states to 14166 states and 24886 transitions. [2018-10-27 07:33:09,684 INFO L78 Accepts]: Start accepts. Automaton has 14166 states and 24886 transitions. Word has length 233 [2018-10-27 07:33:09,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:33:09,685 INFO L481 AbstractCegarLoop]: Abstraction has 14166 states and 24886 transitions. [2018-10-27 07:33:09,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 07:33:09,685 INFO L276 IsEmpty]: Start isEmpty. Operand 14166 states and 24886 transitions. [2018-10-27 07:33:09,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-27 07:33:09,695 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:33:09,695 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 07:33:09,696 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:33:09,696 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:33:09,696 INFO L82 PathProgramCache]: Analyzing trace with hash 877957787, now seen corresponding path program 1 times [2018-10-27 07:33:09,696 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:33:09,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:33:09,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:33:09,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:33:09,698 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:33:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:33:10,215 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-27 07:33:11,245 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 4 proven. 47 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-10-27 07:33:11,245 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:33:11,245 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:33:11,246 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 252 with the following transitions: [2018-10-27 07:33:11,246 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:33:11,252 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:33:11,254 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:33:12,107 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 07:33:12,107 INFO L272 AbstractInterpreter]: Visited 136 different actions 402 times. Merged at 7 different actions 18 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-27 07:33:12,149 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:33:12,149 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 07:33:12,149 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:33:12,150 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 07:33:12,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:33:12,171 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 07:33:12,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:33:12,280 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 07:33:13,392 WARN L179 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 20 [2018-10-27 07:33:14,679 WARN L179 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 16 [2018-10-27 07:33:14,853 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 45 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:33:14,854 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 07:33:14,996 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-10-27 07:33:15,150 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2018-10-27 07:33:16,334 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 45 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:33:16,355 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 07:33:16,356 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2018-10-27 07:33:16,356 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 07:33:16,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-27 07:33:16,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-27 07:33:16,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2018-10-27 07:33:16,358 INFO L87 Difference]: Start difference. First operand 14166 states and 24886 transitions. Second operand 15 states. [2018-10-27 07:33:17,335 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2018-10-27 07:33:20,348 WARN L179 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2018-10-27 07:33:22,280 WARN L179 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 36 DAG size of output: 29 [2018-10-27 07:33:23,315 WARN L179 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2018-10-27 07:33:24,197 WARN L179 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 31 [2018-10-27 07:33:26,089 WARN L179 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2018-10-27 07:33:29,534 WARN L179 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2018-10-27 07:33:31,591 WARN L179 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2018-10-27 07:33:36,911 WARN L179 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2018-10-27 07:33:39,053 WARN L179 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2018-10-27 07:33:41,963 WARN L179 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-10-27 07:33:48,230 WARN L179 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 27 [2018-10-27 07:33:52,024 WARN L179 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-10-27 07:33:55,176 WARN L179 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2018-10-27 07:33:56,272 WARN L179 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 11 [2018-10-27 07:34:11,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:34:11,681 INFO L93 Difference]: Finished difference Result 48774 states and 95149 transitions. [2018-10-27 07:34:11,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-10-27 07:34:11,681 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 251 [2018-10-27 07:34:11,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:34:11,988 INFO L225 Difference]: With dead ends: 48774 [2018-10-27 07:34:11,988 INFO L226 Difference]: Without dead ends: 34480 [2018-10-27 07:34:12,135 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 495 SyntacticMatches, 2 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9407 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=2748, Invalid=21432, Unknown=0, NotChecked=0, Total=24180 [2018-10-27 07:34:12,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34480 states. [2018-10-27 07:34:13,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34480 to 34157. [2018-10-27 07:34:13,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34157 states. [2018-10-27 07:34:14,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34157 states to 34157 states and 62093 transitions. [2018-10-27 07:34:14,584 INFO L78 Accepts]: Start accepts. Automaton has 34157 states and 62093 transitions. Word has length 251 [2018-10-27 07:34:14,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:34:14,584 INFO L481 AbstractCegarLoop]: Abstraction has 34157 states and 62093 transitions. [2018-10-27 07:34:14,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-27 07:34:14,584 INFO L276 IsEmpty]: Start isEmpty. Operand 34157 states and 62093 transitions. [2018-10-27 07:34:14,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-27 07:34:14,598 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:34:14,599 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 07:34:14,599 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:34:14,600 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:34:14,600 INFO L82 PathProgramCache]: Analyzing trace with hash 875315048, now seen corresponding path program 1 times [2018-10-27 07:34:14,600 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:34:14,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:34:14,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:34:14,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:34:14,604 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:34:14,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:34:15,729 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 45 proven. 6 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-10-27 07:34:15,729 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:34:15,730 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:34:15,730 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 252 with the following transitions: [2018-10-27 07:34:15,731 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [574], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:34:15,739 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:34:15,739 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:34:16,209 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 07:34:16,210 INFO L272 AbstractInterpreter]: Visited 141 different actions 558 times. Merged at 7 different actions 28 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-27 07:34:16,247 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:34:16,247 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 07:34:16,247 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:34:16,248 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 07:34:16,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:34:16,265 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 07:34:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:34:16,355 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 07:34:16,772 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:34:16,773 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 07:34:16,889 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:34:16,909 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 07:34:16,910 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2018-10-27 07:34:16,910 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 07:34:16,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-27 07:34:16,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-27 07:34:16,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-10-27 07:34:16,911 INFO L87 Difference]: Start difference. First operand 34157 states and 62093 transitions. Second operand 11 states. [2018-10-27 07:34:22,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:34:22,755 INFO L93 Difference]: Finished difference Result 85625 states and 183132 transitions. [2018-10-27 07:34:22,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 07:34:22,755 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 251 [2018-10-27 07:34:22,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:34:23,330 INFO L225 Difference]: With dead ends: 85625 [2018-10-27 07:34:23,331 INFO L226 Difference]: Without dead ends: 50139 [2018-10-27 07:34:23,633 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 504 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2018-10-27 07:34:23,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50139 states. [2018-10-27 07:34:26,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50139 to 48913. [2018-10-27 07:34:26,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48913 states. [2018-10-27 07:34:26,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48913 states to 48913 states and 82650 transitions. [2018-10-27 07:34:26,803 INFO L78 Accepts]: Start accepts. Automaton has 48913 states and 82650 transitions. Word has length 251 [2018-10-27 07:34:26,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:34:26,804 INFO L481 AbstractCegarLoop]: Abstraction has 48913 states and 82650 transitions. [2018-10-27 07:34:26,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-27 07:34:26,804 INFO L276 IsEmpty]: Start isEmpty. Operand 48913 states and 82650 transitions. [2018-10-27 07:34:26,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-10-27 07:34:26,812 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:34:26,812 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 07:34:26,813 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:34:26,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:34:26,813 INFO L82 PathProgramCache]: Analyzing trace with hash -458311476, now seen corresponding path program 1 times [2018-10-27 07:34:26,813 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:34:26,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:34:26,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:34:26,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:34:26,814 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:34:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:34:27,872 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 123 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:34:27,872 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:34:27,873 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:34:27,873 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 254 with the following transitions: [2018-10-27 07:34:27,873 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [582], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:34:27,883 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:34:27,884 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:34:28,296 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 07:34:28,296 INFO L272 AbstractInterpreter]: Visited 141 different actions 554 times. Merged at 7 different actions 24 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-27 07:34:28,302 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:34:28,302 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 07:34:28,302 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:34:28,302 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 07:34:28,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:34:28,311 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 07:34:28,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:34:28,396 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 07:34:30,221 WARN L179 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 74 DAG size of output: 39 [2018-10-27 07:34:30,359 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 89 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:34:30,359 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 07:34:30,681 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2018-10-27 07:34:30,887 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 13 [2018-10-27 07:34:31,548 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 107 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:34:31,569 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 07:34:31,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 9] total 21 [2018-10-27 07:34:31,569 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 07:34:31,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-27 07:34:31,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-27 07:34:31,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2018-10-27 07:34:31,571 INFO L87 Difference]: Start difference. First operand 48913 states and 82650 transitions. Second operand 16 states. [2018-10-27 07:34:34,485 WARN L179 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2018-10-27 07:34:36,493 WARN L179 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2018-10-27 07:34:38,334 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2018-10-27 07:34:47,605 WARN L179 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 15 [2018-10-27 07:34:48,552 WARN L179 SmtUtils]: Spent 653.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2018-10-27 07:34:51,479 WARN L179 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2018-10-27 07:34:57,142 WARN L179 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2018-10-27 07:35:15,512 WARN L179 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2018-10-27 07:35:23,199 WARN L179 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 59 DAG size of output: 53 Received shutdown request... [2018-10-27 07:35:33,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-27 07:35:33,824 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 07:35:33,831 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 07:35:33,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:35:33 BoogieIcfgContainer [2018-10-27 07:35:33,831 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 07:35:33,832 INFO L168 Benchmark]: Toolchain (without parser) took 227940.28 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 2.7 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-27 07:35:33,833 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 07:35:33,833 INFO L168 Benchmark]: CACSL2BoogieTranslator took 942.41 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2018-10-27 07:35:33,834 INFO L168 Benchmark]: Boogie Procedure Inliner took 293.02 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -843.9 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2018-10-27 07:35:33,835 INFO L168 Benchmark]: Boogie Preprocessor took 153.25 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 07:35:33,835 INFO L168 Benchmark]: RCFGBuilder took 5582.56 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 198.9 MB). Peak memory consumption was 198.9 MB. Max. memory is 7.1 GB. [2018-10-27 07:35:33,836 INFO L168 Benchmark]: TraceAbstraction took 220963.91 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 2.7 GB in the end (delta: -654.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-27 07:35:33,840 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 942.41 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 293.02 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -843.9 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 153.25 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5582.56 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 198.9 MB). Peak memory consumption was 198.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 220963.91 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 2.7 GB in the end (delta: -654.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 72). Cancelled while BasicCegarLoop was constructing difference of abstraction (48913states) and FLOYD_HOARE automaton (currently 39 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (30684 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 220.8s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 194.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2015 SDtfs, 20416 SDslu, 3720 SDs, 0 SdLazy, 38403 SolverSat, 6869 SolverUnsat, 58 SolverUnknown, 0 SolverNotchecked, 142.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 2439 GetRequests, 2158 SyntacticMatches, 14 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10259 ImplicationChecksByTransitivity, 35.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48913occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.7s AbstIntTime, 5 AbstIntIterations, 1 AbstIntStrong, 0.9972915750915752 AbsIntWeakeningRatio, 0.16 AbsIntAvgWeakeningVarsNumRemoved, 17.982857142857142 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 7.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 2552 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 13.6s InterpolantComputationTime, 2514 NumberOfCodeBlocks, 2514 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 3485 ConstructedInterpolants, 9 QuantifiedInterpolants, 5434687 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1816 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 17 InterpolantComputations, 4 PerfectInterpolantSequences, 1415/1757 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown