java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label53_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 08:34:11,301 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 08:34:11,303 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 08:34:11,318 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 08:34:11,318 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 08:34:11,320 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 08:34:11,321 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 08:34:11,323 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 08:34:11,324 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 08:34:11,325 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 08:34:11,326 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 08:34:11,326 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 08:34:11,327 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 08:34:11,328 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 08:34:11,329 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 08:34:11,330 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 08:34:11,331 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 08:34:11,333 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 08:34:11,335 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 08:34:11,336 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 08:34:11,337 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 08:34:11,339 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 08:34:11,343 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 08:34:11,343 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 08:34:11,344 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 08:34:11,347 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 08:34:11,350 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 08:34:11,351 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 08:34:11,352 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 08:34:11,353 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 08:34:11,353 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 08:34:11,353 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 08:34:11,357 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 08:34:11,357 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 08:34:11,358 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 08:34:11,358 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 08:34:11,359 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 08:34:11,379 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 08:34:11,379 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 08:34:11,380 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 08:34:11,380 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 08:34:11,380 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 08:34:11,381 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 08:34:11,381 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 08:34:11,381 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 08:34:11,381 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 08:34:11,382 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 08:34:11,382 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 08:34:11,382 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 08:34:11,382 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 08:34:11,382 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 08:34:11,383 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 08:34:11,383 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 08:34:11,383 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 08:34:11,383 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 08:34:11,384 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 08:34:11,385 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 08:34:11,385 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 08:34:11,385 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 08:34:11,385 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 08:34:11,386 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 08:34:11,386 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 08:34:11,386 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 08:34:11,386 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:34:11,386 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 08:34:11,387 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 08:34:11,387 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 08:34:11,387 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 08:34:11,387 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 08:34:11,387 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 08:34:11,388 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 08:34:11,388 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 08:34:11,388 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 08:34:11,441 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 08:34:11,457 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 08:34:11,462 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 08:34:11,464 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 08:34:11,464 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 08:34:11,466 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label53_true-unreach-call.c [2018-11-07 08:34:11,530 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58b42cc8f/b1edac45a47a4122ab876fc4246b4c74/FLAGd68285bc8 [2018-11-07 08:34:12,145 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 08:34:12,146 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label53_true-unreach-call.c [2018-11-07 08:34:12,161 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58b42cc8f/b1edac45a47a4122ab876fc4246b4c74/FLAGd68285bc8 [2018-11-07 08:34:12,177 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58b42cc8f/b1edac45a47a4122ab876fc4246b4c74 [2018-11-07 08:34:12,189 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 08:34:12,191 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 08:34:12,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 08:34:12,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 08:34:12,198 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 08:34:12,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:34:12" (1/1) ... [2018-11-07 08:34:12,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b330f55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:34:12, skipping insertion in model container [2018-11-07 08:34:12,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:34:12" (1/1) ... [2018-11-07 08:34:12,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 08:34:12,293 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 08:34:12,933 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:34:12,939 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 08:34:13,115 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:34:13,136 INFO L193 MainTranslator]: Completed translation [2018-11-07 08:34:13,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:34:13 WrapperNode [2018-11-07 08:34:13,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 08:34:13,137 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 08:34:13,138 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 08:34:13,138 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 08:34:13,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:34:13" (1/1) ... [2018-11-07 08:34:13,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:34:13" (1/1) ... [2018-11-07 08:34:13,293 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 08:34:13,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 08:34:13,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 08:34:13,294 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 08:34:13,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:34:13" (1/1) ... [2018-11-07 08:34:13,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:34:13" (1/1) ... [2018-11-07 08:34:13,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:34:13" (1/1) ... [2018-11-07 08:34:13,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:34:13" (1/1) ... [2018-11-07 08:34:13,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:34:13" (1/1) ... [2018-11-07 08:34:13,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:34:13" (1/1) ... [2018-11-07 08:34:13,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:34:13" (1/1) ... [2018-11-07 08:34:13,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 08:34:13,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 08:34:13,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 08:34:13,452 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 08:34:13,454 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:34:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:34:13,531 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 08:34:13,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 08:34:13,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 08:34:13,532 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 08:34:13,532 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 08:34:13,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 08:34:13,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 08:34:13,533 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 08:34:13,533 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 08:34:19,155 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 08:34:19,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:34:19 BoogieIcfgContainer [2018-11-07 08:34:19,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 08:34:19,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 08:34:19,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 08:34:19,162 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 08:34:19,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:34:12" (1/3) ... [2018-11-07 08:34:19,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba7baa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:34:19, skipping insertion in model container [2018-11-07 08:34:19,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:34:13" (2/3) ... [2018-11-07 08:34:19,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba7baa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:34:19, skipping insertion in model container [2018-11-07 08:34:19,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:34:19" (3/3) ... [2018-11-07 08:34:19,167 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label53_true-unreach-call.c [2018-11-07 08:34:19,179 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 08:34:19,193 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 08:34:19,214 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 08:34:19,272 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 08:34:19,272 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 08:34:19,272 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 08:34:19,273 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 08:34:19,273 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 08:34:19,273 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 08:34:19,273 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 08:34:19,274 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 08:34:19,323 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 08:34:19,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-11-07 08:34:19,333 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:34:19,334 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:34:19,336 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:34:19,343 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:34:19,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1916491172, now seen corresponding path program 1 times [2018-11-07 08:34:19,346 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:34:19,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:19,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:34:19,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:19,400 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:34:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:34:19,936 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-07 08:34:19,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:34:19,957 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:34:19,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 08:34:19,957 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:34:19,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 08:34:19,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 08:34:19,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 08:34:19,984 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-11-07 08:34:23,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:34:23,431 INFO L93 Difference]: Finished difference Result 1001 states and 1780 transitions. [2018-11-07 08:34:23,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 08:34:23,436 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2018-11-07 08:34:23,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:34:23,461 INFO L225 Difference]: With dead ends: 1001 [2018-11-07 08:34:23,461 INFO L226 Difference]: Without dead ends: 702 [2018-11-07 08:34:23,470 INFO L604 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 [2018-11-07 08:34:23,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2018-11-07 08:34:23,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 699. [2018-11-07 08:34:23,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2018-11-07 08:34:23,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1082 transitions. [2018-11-07 08:34:23,573 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1082 transitions. Word has length 54 [2018-11-07 08:34:23,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:34:23,574 INFO L480 AbstractCegarLoop]: Abstraction has 699 states and 1082 transitions. [2018-11-07 08:34:23,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 08:34:23,575 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1082 transitions. [2018-11-07 08:34:23,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-11-07 08:34:23,583 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:34:23,584 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 08:34:23,584 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:34:23,584 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:34:23,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1310907987, now seen corresponding path program 1 times [2018-11-07 08:34:23,585 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:34:23,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:23,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:34:23,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:23,587 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:34:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:34:23,967 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:34:23,967 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:34:23,967 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:34:23,967 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:34:23,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:34:23,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:34:23,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:34:23,971 INFO L87 Difference]: Start difference. First operand 699 states and 1082 transitions. Second operand 6 states. [2018-11-07 08:34:28,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:34:28,423 INFO L93 Difference]: Finished difference Result 2534 states and 4100 transitions. [2018-11-07 08:34:28,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:34:28,424 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-11-07 08:34:28,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:34:28,439 INFO L225 Difference]: With dead ends: 2534 [2018-11-07 08:34:28,439 INFO L226 Difference]: Without dead ends: 1841 [2018-11-07 08:34:28,447 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:34:28,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2018-11-07 08:34:28,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1815. [2018-11-07 08:34:28,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1815 states. [2018-11-07 08:34:28,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 2683 transitions. [2018-11-07 08:34:28,560 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 2683 transitions. Word has length 127 [2018-11-07 08:34:28,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:34:28,561 INFO L480 AbstractCegarLoop]: Abstraction has 1815 states and 2683 transitions. [2018-11-07 08:34:28,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:34:28,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 2683 transitions. [2018-11-07 08:34:28,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-11-07 08:34:28,577 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:34:28,579 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:34:28,579 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:34:28,580 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:34:28,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1917313452, now seen corresponding path program 1 times [2018-11-07 08:34:28,580 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:34:28,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:28,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:34:28,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:28,582 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:34:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:34:29,060 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-07 08:34:29,060 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:34:29,060 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 08:34:29,060 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:34:29,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 08:34:29,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 08:34:29,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 08:34:29,065 INFO L87 Difference]: Start difference. First operand 1815 states and 2683 transitions. Second operand 4 states. [2018-11-07 08:34:32,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:34:32,630 INFO L93 Difference]: Finished difference Result 4749 states and 7412 transitions. [2018-11-07 08:34:32,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 08:34:32,633 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 230 [2018-11-07 08:34:32,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:34:32,658 INFO L225 Difference]: With dead ends: 4749 [2018-11-07 08:34:32,658 INFO L226 Difference]: Without dead ends: 2940 [2018-11-07 08:34:32,671 INFO L604 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 [2018-11-07 08:34:32,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2018-11-07 08:34:32,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 2927. [2018-11-07 08:34:32,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2927 states. [2018-11-07 08:34:32,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2927 states to 2927 states and 4052 transitions. [2018-11-07 08:34:32,773 INFO L78 Accepts]: Start accepts. Automaton has 2927 states and 4052 transitions. Word has length 230 [2018-11-07 08:34:32,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:34:32,774 INFO L480 AbstractCegarLoop]: Abstraction has 2927 states and 4052 transitions. [2018-11-07 08:34:32,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 08:34:32,774 INFO L276 IsEmpty]: Start isEmpty. Operand 2927 states and 4052 transitions. [2018-11-07 08:34:32,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-11-07 08:34:32,785 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:34:32,786 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:34:32,786 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:34:32,786 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:34:32,786 INFO L82 PathProgramCache]: Analyzing trace with hash -20907064, now seen corresponding path program 1 times [2018-11-07 08:34:32,787 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:34:32,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:32,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:34:32,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:32,788 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:34:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:34:33,474 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:34:33,475 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:34:33,475 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:34:33,478 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 237 with the following transitions: [2018-11-07 08:34:33,482 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [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], [305], [313], [321], [329], [333], [335], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [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], [653], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:34:33,537 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:34:33,538 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:34:34,579 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:34:34,580 INFO L272 AbstractInterpreter]: Visited 113 different actions 113 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-11-07 08:34:34,624 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:34:34,624 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:34:35,344 INFO L227 lantSequenceWeakener]: Weakened 227 states. On average, predicates are now at 73.59% of their original sizes. [2018-11-07 08:34:35,345 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:34:35,596 INFO L415 sIntCurrentIteration]: We unified 235 AI predicates to 235 [2018-11-07 08:34:35,597 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:34:35,598 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:34:35,598 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 08:34:35,598 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:34:35,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:34:35,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:34:35,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:34:35,600 INFO L87 Difference]: Start difference. First operand 2927 states and 4052 transitions. Second operand 6 states. [2018-11-07 08:35:29,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:35:29,306 INFO L93 Difference]: Finished difference Result 6040 states and 8357 transitions. [2018-11-07 08:35:29,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 08:35:29,306 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 236 [2018-11-07 08:35:29,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:35:29,324 INFO L225 Difference]: With dead ends: 6040 [2018-11-07 08:35:29,324 INFO L226 Difference]: Without dead ends: 3119 [2018-11-07 08:35:29,333 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 236 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 08:35:29,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3119 states. [2018-11-07 08:35:29,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3119 to 3117. [2018-11-07 08:35:29,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3117 states. [2018-11-07 08:35:29,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3117 states to 3117 states and 4252 transitions. [2018-11-07 08:35:29,414 INFO L78 Accepts]: Start accepts. Automaton has 3117 states and 4252 transitions. Word has length 236 [2018-11-07 08:35:29,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:35:29,415 INFO L480 AbstractCegarLoop]: Abstraction has 3117 states and 4252 transitions. [2018-11-07 08:35:29,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:35:29,415 INFO L276 IsEmpty]: Start isEmpty. Operand 3117 states and 4252 transitions. [2018-11-07 08:35:29,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-11-07 08:35:29,424 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:35:29,425 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:35:29,425 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:35:29,425 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:35:29,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1343138969, now seen corresponding path program 1 times [2018-11-07 08:35:29,426 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:35:29,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:35:29,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:35:29,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:35:29,427 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:35:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:35:29,794 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:35:29,795 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:35:29,795 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:35:29,795 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 290 with the following transitions: [2018-11-07 08:35:29,796 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [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], [305], [313], [321], [329], [333], [335], [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], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [653], [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] [2018-11-07 08:35:29,801 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:35:29,801 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:35:30,094 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:35:30,094 INFO L272 AbstractInterpreter]: Visited 135 different actions 392 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 08:35:30,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:35:30,133 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:35:30,470 INFO L227 lantSequenceWeakener]: Weakened 286 states. On average, predicates are now at 75.43% of their original sizes. [2018-11-07 08:35:30,471 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:35:30,769 INFO L415 sIntCurrentIteration]: We unified 288 AI predicates to 288 [2018-11-07 08:35:30,769 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:35:30,770 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:35:30,770 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-07 08:35:30,770 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:35:30,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 08:35:30,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 08:35:30,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 08:35:30,772 INFO L87 Difference]: Start difference. First operand 3117 states and 4252 transitions. Second operand 10 states. [2018-11-07 08:37:08,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:37:08,478 INFO L93 Difference]: Finished difference Result 7186 states and 10148 transitions. [2018-11-07 08:37:08,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 08:37:08,478 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 289 [2018-11-07 08:37:08,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:37:08,497 INFO L225 Difference]: With dead ends: 7186 [2018-11-07 08:37:08,497 INFO L226 Difference]: Without dead ends: 4265 [2018-11-07 08:37:08,509 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 297 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-11-07 08:37:08,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4265 states. [2018-11-07 08:37:08,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4265 to 4260. [2018-11-07 08:37:08,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4260 states. [2018-11-07 08:37:08,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4260 states to 4260 states and 5587 transitions. [2018-11-07 08:37:08,603 INFO L78 Accepts]: Start accepts. Automaton has 4260 states and 5587 transitions. Word has length 289 [2018-11-07 08:37:08,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:37:08,604 INFO L480 AbstractCegarLoop]: Abstraction has 4260 states and 5587 transitions. [2018-11-07 08:37:08,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 08:37:08,604 INFO L276 IsEmpty]: Start isEmpty. Operand 4260 states and 5587 transitions. [2018-11-07 08:37:08,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-11-07 08:37:08,614 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:37:08,614 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:37:08,615 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:37:08,615 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:37:08,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1291665983, now seen corresponding path program 1 times [2018-11-07 08:37:08,615 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:37:08,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:37:08,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:37:08,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:37:08,617 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:37:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:37:08,842 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-11-07 08:37:08,842 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:37:08,842 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 08:37:08,843 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:37:08,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:37:08,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:37:08,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:37:08,844 INFO L87 Difference]: Start difference. First operand 4260 states and 5587 transitions. Second operand 3 states. [2018-11-07 08:37:09,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:37:09,992 INFO L93 Difference]: Finished difference Result 8328 states and 11552 transitions. [2018-11-07 08:37:09,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:37:09,997 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 294 [2018-11-07 08:37:09,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:37:10,021 INFO L225 Difference]: With dead ends: 8328 [2018-11-07 08:37:10,021 INFO L226 Difference]: Without dead ends: 5407 [2018-11-07 08:37:10,033 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:37:10,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5407 states. [2018-11-07 08:37:10,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5407 to 5405. [2018-11-07 08:37:10,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5405 states. [2018-11-07 08:37:10,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5405 states to 5405 states and 7129 transitions. [2018-11-07 08:37:10,156 INFO L78 Accepts]: Start accepts. Automaton has 5405 states and 7129 transitions. Word has length 294 [2018-11-07 08:37:10,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:37:10,156 INFO L480 AbstractCegarLoop]: Abstraction has 5405 states and 7129 transitions. [2018-11-07 08:37:10,157 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:37:10,157 INFO L276 IsEmpty]: Start isEmpty. Operand 5405 states and 7129 transitions. [2018-11-07 08:37:10,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-11-07 08:37:10,172 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:37:10,173 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 08:37:10,173 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:37:10,173 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:37:10,173 INFO L82 PathProgramCache]: Analyzing trace with hash 5547292, now seen corresponding path program 1 times [2018-11-07 08:37:10,174 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:37:10,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:37:10,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:37:10,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:37:10,175 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:37:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:37:10,480 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-11-07 08:37:10,480 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:37:10,480 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 08:37:10,480 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:37:10,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:37:10,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:37:10,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:37:10,482 INFO L87 Difference]: Start difference. First operand 5405 states and 7129 transitions. Second operand 3 states. [2018-11-07 08:37:11,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:37:11,909 INFO L93 Difference]: Finished difference Result 13111 states and 18378 transitions. [2018-11-07 08:37:11,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:37:11,909 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 331 [2018-11-07 08:37:11,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:37:11,948 INFO L225 Difference]: With dead ends: 13111 [2018-11-07 08:37:11,948 INFO L226 Difference]: Without dead ends: 9045 [2018-11-07 08:37:11,969 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:37:11,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9045 states. [2018-11-07 08:37:12,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9045 to 9045. [2018-11-07 08:37:12,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9045 states. [2018-11-07 08:37:12,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9045 states to 9045 states and 11812 transitions. [2018-11-07 08:37:12,175 INFO L78 Accepts]: Start accepts. Automaton has 9045 states and 11812 transitions. Word has length 331 [2018-11-07 08:37:12,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:37:12,176 INFO L480 AbstractCegarLoop]: Abstraction has 9045 states and 11812 transitions. [2018-11-07 08:37:12,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:37:12,176 INFO L276 IsEmpty]: Start isEmpty. Operand 9045 states and 11812 transitions. [2018-11-07 08:37:12,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-11-07 08:37:12,206 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:37:12,206 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 08:37:12,207 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:37:12,207 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:37:12,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1600930957, now seen corresponding path program 1 times [2018-11-07 08:37:12,207 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:37:12,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:37:12,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:37:12,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:37:12,208 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:37:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:37:12,818 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2018-11-07 08:37:12,819 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:37:12,819 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:37:12,819 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 387 with the following transitions: [2018-11-07 08:37:12,820 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [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], [305], [313], [321], [329], [333], [335], [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], [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], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [870], [874], [878], [889], [893], [897], [901], [905], [909], [913], [924], [928], [931], [932], [936], [940], [944], [948], [952], [956], [960], [971], [975], [979], [983], [986], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:37:12,826 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:37:12,826 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:37:13,196 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:37:13,196 INFO L272 AbstractInterpreter]: Visited 180 different actions 704 times. Merged at 7 different actions 17 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-07 08:37:13,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:37:13,206 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:37:13,609 INFO L227 lantSequenceWeakener]: Weakened 383 states. On average, predicates are now at 75.32% of their original sizes. [2018-11-07 08:37:13,609 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:37:13,711 INFO L415 sIntCurrentIteration]: We unified 385 AI predicates to 385 [2018-11-07 08:37:13,712 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:37:13,712 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:37:13,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2018-11-07 08:37:13,713 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:37:13,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 08:37:13,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 08:37:13,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 08:37:13,714 INFO L87 Difference]: Start difference. First operand 9045 states and 11812 transitions. Second operand 10 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown