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/Problem15_label10_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:45:29,205 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:45:29,207 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:45:29,220 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:45:29,220 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:45:29,221 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:45:29,223 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:45:29,225 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:45:29,227 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:45:29,228 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:45:29,229 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:45:29,230 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:45:29,231 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:45:29,234 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:45:29,237 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:45:29,238 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:45:29,238 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:45:29,240 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:45:29,242 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:45:29,244 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:45:29,245 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:45:29,246 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:45:29,249 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 21:45:29,249 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 21:45:29,250 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 21:45:29,251 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 21:45:29,252 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 21:45:29,252 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 21:45:29,253 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 21:45:29,254 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 21:45:29,255 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 21:45:29,255 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 21:45:29,256 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:45:29,256 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:45:29,257 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:45:29,258 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:45:29,258 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 21:45:29,285 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:45:29,285 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:45:29,286 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:45:29,286 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:45:29,287 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:45:29,291 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:45:29,291 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:45:29,291 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:45:29,292 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:45:29,292 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:45:29,292 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:45:29,292 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:45:29,293 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:45:29,293 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:45:29,293 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:45:29,295 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:45:29,295 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:45:29,295 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:45:29,295 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:45:29,296 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:45:29,296 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:45:29,296 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:45:29,296 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:45:29,297 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:45:29,297 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:45:29,297 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:45:29,298 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:45:29,298 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:45:29,298 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:45:29,298 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:45:29,298 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:45:29,299 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:45:29,300 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:45:29,300 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:45:29,355 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:45:29,375 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:45:29,380 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:45:29,382 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:45:29,382 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:45:29,383 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label10_true-unreach-call.c [2018-10-24 21:45:29,453 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/60aace2ce/6bb40648551c4c0fb7dc7fbc743f0c80/FLAG391fed491 [2018-10-24 21:45:30,076 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:45:30,077 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label10_true-unreach-call.c [2018-10-24 21:45:30,096 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/60aace2ce/6bb40648551c4c0fb7dc7fbc743f0c80/FLAG391fed491 [2018-10-24 21:45:30,110 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/60aace2ce/6bb40648551c4c0fb7dc7fbc743f0c80 [2018-10-24 21:45:30,121 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:45:30,123 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:45:30,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:45:30,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:45:30,127 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:45:30,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:45:30" (1/1) ... [2018-10-24 21:45:30,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11290b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:45:30, skipping insertion in model container [2018-10-24 21:45:30,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:45:30" (1/1) ... [2018-10-24 21:45:30,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:45:30,234 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:45:31,027 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:45:31,032 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:45:31,334 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:45:31,356 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:45:31,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:45:31 WrapperNode [2018-10-24 21:45:31,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:45:31,358 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:45:31,359 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:45:31,359 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:45:31,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:45:31" (1/1) ... [2018-10-24 21:45:31,425 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:45:31" (1/1) ... [2018-10-24 21:45:31,748 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:45:31,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:45:31,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:45:31,749 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:45:31,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:45:31" (1/1) ... [2018-10-24 21:45:31,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:45:31" (1/1) ... [2018-10-24 21:45:31,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:45:31" (1/1) ... [2018-10-24 21:45:31,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:45:31" (1/1) ... [2018-10-24 21:45:31,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:45:31" (1/1) ... [2018-10-24 21:45:31,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:45:31" (1/1) ... [2018-10-24 21:45:31,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:45:31" (1/1) ... [2018-10-24 21:45:31,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:45:31,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:45:31,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:45:31,956 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:45:31,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:45:31" (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 21:45:32,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:45:32,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:45:32,021 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:45:32,022 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:45:32,022 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:45:32,022 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:45:32,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:45:32,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:45:32,022 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:45:32,023 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:45:39,863 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:45:39,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:45:39 BoogieIcfgContainer [2018-10-24 21:45:39,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:45:39,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:45:39,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:45:39,871 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:45:39,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:45:30" (1/3) ... [2018-10-24 21:45:39,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@438e7041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:45:39, skipping insertion in model container [2018-10-24 21:45:39,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:45:31" (2/3) ... [2018-10-24 21:45:39,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@438e7041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:45:39, skipping insertion in model container [2018-10-24 21:45:39,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:45:39" (3/3) ... [2018-10-24 21:45:39,875 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label10_true-unreach-call.c [2018-10-24 21:45:39,885 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:45:39,895 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:45:39,912 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:45:39,955 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:45:39,955 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:45:39,955 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:45:39,955 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:45:39,956 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:45:39,956 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:45:39,956 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:45:39,956 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:45:40,004 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-24 21:45:40,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-24 21:45:40,012 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:45:40,013 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] [2018-10-24 21:45:40,016 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:45:40,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:45:40,021 INFO L82 PathProgramCache]: Analyzing trace with hash -98869727, now seen corresponding path program 1 times [2018-10-24 21:45:40,023 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:45:40,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:45:40,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:45:40,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:45:40,072 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:45:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:45:40,539 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-24 21:45:40,554 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 21:45:40,556 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:45:40,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:45:40,557 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:45:40,563 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:45:40,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:45:40,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:45:40,584 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-24 21:45:49,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:45:49,825 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-10-24 21:45:49,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:45:49,827 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2018-10-24 21:45:49,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:45:49,864 INFO L225 Difference]: With dead ends: 1558 [2018-10-24 21:45:49,864 INFO L226 Difference]: Without dead ends: 1114 [2018-10-24 21:45:49,877 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:45:49,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-10-24 21:45:50,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1091. [2018-10-24 21:45:50,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2018-10-24 21:45:50,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1853 transitions. [2018-10-24 21:45:50,051 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1853 transitions. Word has length 41 [2018-10-24 21:45:50,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:45:50,052 INFO L481 AbstractCegarLoop]: Abstraction has 1091 states and 1853 transitions. [2018-10-24 21:45:50,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:45:50,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1853 transitions. [2018-10-24 21:45:50,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-24 21:45:50,064 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:45:50,064 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:50,065 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:45:50,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:45:50,066 INFO L82 PathProgramCache]: Analyzing trace with hash -2025595060, now seen corresponding path program 1 times [2018-10-24 21:45:50,066 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:45:50,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:45:50,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:45:50,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:45:50,069 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:45:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:45:50,370 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:45:50,370 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:45:50,370 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:45:50,371 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:45:50,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:45:50,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:45:50,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:45:50,373 INFO L87 Difference]: Start difference. First operand 1091 states and 1853 transitions. Second operand 5 states. [2018-10-24 21:45:59,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:45:59,277 INFO L93 Difference]: Finished difference Result 3240 states and 5580 transitions. [2018-10-24 21:45:59,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:45:59,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2018-10-24 21:45:59,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:45:59,299 INFO L225 Difference]: With dead ends: 3240 [2018-10-24 21:45:59,299 INFO L226 Difference]: Without dead ends: 2155 [2018-10-24 21:45:59,306 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:45:59,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2155 states. [2018-10-24 21:45:59,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2155 to 2114. [2018-10-24 21:45:59,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2114 states. [2018-10-24 21:45:59,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 3176 transitions. [2018-10-24 21:45:59,396 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 3176 transitions. Word has length 114 [2018-10-24 21:45:59,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:45:59,397 INFO L481 AbstractCegarLoop]: Abstraction has 2114 states and 3176 transitions. [2018-10-24 21:45:59,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:45:59,397 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 3176 transitions. [2018-10-24 21:45:59,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-24 21:45:59,409 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:45:59,409 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:59,410 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:45:59,410 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:45:59,410 INFO L82 PathProgramCache]: Analyzing trace with hash 565874524, now seen corresponding path program 1 times [2018-10-24 21:45:59,411 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:45:59,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:45:59,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:45:59,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:45:59,412 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:45:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:45:59,651 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:45:59,652 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:45:59,652 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:45:59,652 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:45:59,654 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:45:59,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:45:59,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:45:59,655 INFO L87 Difference]: Start difference. First operand 2114 states and 3176 transitions. Second operand 4 states. [2018-10-24 21:46:06,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:46:06,408 INFO L93 Difference]: Finished difference Result 7958 states and 12498 transitions. [2018-10-24 21:46:06,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:46:06,409 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2018-10-24 21:46:06,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:46:06,450 INFO L225 Difference]: With dead ends: 7958 [2018-10-24 21:46:06,450 INFO L226 Difference]: Without dead ends: 5850 [2018-10-24 21:46:06,476 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:46:06,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5850 states. [2018-10-24 21:46:06,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5850 to 5847. [2018-10-24 21:46:06,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5847 states. [2018-10-24 21:46:06,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5847 states to 5847 states and 8223 transitions. [2018-10-24 21:46:06,643 INFO L78 Accepts]: Start accepts. Automaton has 5847 states and 8223 transitions. Word has length 122 [2018-10-24 21:46:06,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:46:06,643 INFO L481 AbstractCegarLoop]: Abstraction has 5847 states and 8223 transitions. [2018-10-24 21:46:06,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:46:06,644 INFO L276 IsEmpty]: Start isEmpty. Operand 5847 states and 8223 transitions. [2018-10-24 21:46:06,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-24 21:46:06,648 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:46:06,649 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:46:06,649 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:46:06,649 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:46:06,649 INFO L82 PathProgramCache]: Analyzing trace with hash -2101547042, now seen corresponding path program 1 times [2018-10-24 21:46:06,649 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:46:06,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:46:06,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:46:06,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:46:06,651 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:46:06,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:46:07,217 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:46:07,218 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:46:07,218 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:46:07,219 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 154 with the following transitions: [2018-10-24 21:46:07,221 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 21:46:07,296 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:46:07,297 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:46:09,703 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:46:09,705 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 21:46:09,745 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:46:09,745 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:46:11,133 INFO L232 lantSequenceWeakener]: Weakened 148 states. On average, predicates are now at 78.07% of their original sizes. [2018-10-24 21:46:11,133 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:46:11,573 INFO L413 sIntCurrentIteration]: We have 152 unified AI predicates [2018-10-24 21:46:11,573 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:46:11,574 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:46:11,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2018-10-24 21:46:11,575 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:46:11,576 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 21:46:11,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 21:46:11,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:46:11,576 INFO L87 Difference]: Start difference. First operand 5847 states and 8223 transitions. Second operand 8 states. [2018-10-24 21:46:15,328 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:47:58,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:47:58,378 INFO L93 Difference]: Finished difference Result 11998 states and 16819 transitions. [2018-10-24 21:47:58,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:47:58,379 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 153 [2018-10-24 21:47:58,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:47:58,413 INFO L225 Difference]: With dead ends: 11998 [2018-10-24 21:47:58,414 INFO L226 Difference]: Without dead ends: 6157 [2018-10-24 21:47:58,444 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 154 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 21:47:58,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6157 states. [2018-10-24 21:47:58,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6157 to 6155. [2018-10-24 21:47:58,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6155 states. [2018-10-24 21:47:58,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6155 states to 6155 states and 8539 transitions. [2018-10-24 21:47:58,599 INFO L78 Accepts]: Start accepts. Automaton has 6155 states and 8539 transitions. Word has length 153 [2018-10-24 21:47:58,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:47:58,600 INFO L481 AbstractCegarLoop]: Abstraction has 6155 states and 8539 transitions. [2018-10-24 21:47:58,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 21:47:58,600 INFO L276 IsEmpty]: Start isEmpty. Operand 6155 states and 8539 transitions. [2018-10-24 21:47:58,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-10-24 21:47:58,606 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:47:58,606 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 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 21:47:58,606 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:47:58,607 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:47:58,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1992816428, now seen corresponding path program 1 times [2018-10-24 21:47:58,607 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:47:58,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:47:58,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:47:58,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:47:58,609 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:47:58,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:47:59,436 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:47:59,436 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:47:59,437 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:47:59,437 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 250 with the following transitions: [2018-10-24 21:47:59,437 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 21:47:59,444 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:47:59,444 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:48:01,264 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:48:08,002 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:48:08,002 INFO L272 AbstractInterpreter]: Visited 120 different actions 347 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:48:08,011 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:48:08,011 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:48:11,040 INFO L232 lantSequenceWeakener]: Weakened 73 states. On average, predicates are now at 79.02% of their original sizes. [2018-10-24 21:48:11,041 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-24 21:49:21,597 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:49:21,604 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:49:21,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:49:21 BoogieIcfgContainer [2018-10-24 21:49:21,604 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:49:21,606 INFO L168 Benchmark]: Toolchain (without parser) took 231483.60 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 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-24 21:49:21,607 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:49:21,607 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1234.20 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:49:21,609 INFO L168 Benchmark]: Boogie Procedure Inliner took 389.79 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 768.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -884.4 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:49:21,611 INFO L168 Benchmark]: Boogie Preprocessor took 206.18 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2018-10-24 21:49:21,612 INFO L168 Benchmark]: RCFGBuilder took 7909.49 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 309.7 MB). Peak memory consumption was 309.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:49:21,613 INFO L168 Benchmark]: TraceAbstraction took 221739.01 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 2.5 GB in the end (delta: -628.9 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-24 21:49:21,621 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1234.20 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 389.79 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 768.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -884.4 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 206.18 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7909.49 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 309.7 MB). Peak memory consumption was 309.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 221739.01 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 2.5 GB in the end (delta: -628.9 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 109). Cancelled while BasicCegarLoop was analyzing trace of length 250 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 15 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 221.6s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 131.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1267 SDtfs, 3409 SDslu, 1121 SDs, 0 SdLazy, 7444 SolverSat, 1716 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 92.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 174 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6155occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.1s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9949547101449275 AbsIntWeakeningRatio, 0.115 AbsIntAvgWeakeningVarsNumRemoved, 497.135 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 4 MinimizatonAttempts, 69 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 430 NumberOfCodeBlocks, 430 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 426 ConstructedInterpolants, 0 QuantifiedInterpolants, 157611 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 68/102 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown