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/Problem10_label02_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 02:18:37,298 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 02:18:37,300 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 02:18:37,313 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 02:18:37,313 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 02:18:37,314 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 02:18:37,316 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 02:18:37,317 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 02:18:37,319 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 02:18:37,320 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 02:18:37,321 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 02:18:37,321 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 02:18:37,322 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 02:18:37,323 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 02:18:37,324 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 02:18:37,325 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 02:18:37,326 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 02:18:37,328 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 02:18:37,330 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 02:18:37,332 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 02:18:37,333 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 02:18:37,334 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 02:18:37,336 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 02:18:37,337 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 02:18:37,337 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 02:18:37,338 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 02:18:37,339 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 02:18:37,340 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 02:18:37,341 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 02:18:37,342 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 02:18:37,342 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 02:18:37,343 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 02:18:37,343 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 02:18:37,343 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 02:18:37,344 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 02:18:37,345 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 02:18:37,345 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 [2018-10-27 02:18:37,361 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 02:18:37,361 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 02:18:37,362 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 02:18:37,362 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 02:18:37,362 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 02:18:37,363 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 02:18:37,363 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 02:18:37,363 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 02:18:37,363 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 02:18:37,363 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 02:18:37,364 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 02:18:37,364 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 02:18:37,364 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 02:18:37,365 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 02:18:37,365 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 02:18:37,365 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 02:18:37,365 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 02:18:37,365 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 02:18:37,366 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 02:18:37,366 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 02:18:37,366 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 02:18:37,366 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 02:18:37,366 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 02:18:37,367 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 02:18:37,367 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 02:18:37,367 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 02:18:37,367 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 02:18:37,368 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 02:18:37,368 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 02:18:37,368 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 02:18:37,368 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 02:18:37,368 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 02:18:37,368 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 02:18:37,369 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 02:18:37,423 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 02:18:37,442 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 02:18:37,448 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 02:18:37,449 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 02:18:37,450 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 02:18:37,451 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label02_true-unreach-call.c [2018-10-27 02:18:37,535 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/703b1fff3/5ac0ecd836ce4e12ac54fedbabbfb96a/FLAG4d746aca4 [2018-10-27 02:18:38,155 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 02:18:38,159 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label02_true-unreach-call.c [2018-10-27 02:18:38,180 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/703b1fff3/5ac0ecd836ce4e12ac54fedbabbfb96a/FLAG4d746aca4 [2018-10-27 02:18:38,207 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/703b1fff3/5ac0ecd836ce4e12ac54fedbabbfb96a [2018-10-27 02:18:38,222 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 02:18:38,224 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 02:18:38,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 02:18:38,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 02:18:38,230 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 02:18:38,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:18:38" (1/1) ... [2018-10-27 02:18:38,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@128929bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:18:38, skipping insertion in model container [2018-10-27 02:18:38,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:18:38" (1/1) ... [2018-10-27 02:18:38,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 02:18:38,300 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 02:18:38,715 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 02:18:38,720 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 02:18:38,840 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 02:18:38,857 INFO L193 MainTranslator]: Completed translation [2018-10-27 02:18:38,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:18:38 WrapperNode [2018-10-27 02:18:38,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 02:18:38,859 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 02:18:38,859 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 02:18:38,859 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 02:18:38,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:18:38" (1/1) ... [2018-10-27 02:18:38,891 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:18:38" (1/1) ... [2018-10-27 02:18:39,077 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 02:18:39,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 02:18:39,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 02:18:39,077 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 02:18:39,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:18:38" (1/1) ... [2018-10-27 02:18:39,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:18:38" (1/1) ... [2018-10-27 02:18:39,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:18:38" (1/1) ... [2018-10-27 02:18:39,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:18:38" (1/1) ... [2018-10-27 02:18:39,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:18:38" (1/1) ... [2018-10-27 02:18:39,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:18:38" (1/1) ... [2018-10-27 02:18:39,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:18:38" (1/1) ... [2018-10-27 02:18:39,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 02:18:39,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 02:18:39,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 02:18:39,210 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 02:18:39,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:18:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 02:18:39,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 02:18:39,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 02:18:39,287 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 02:18:39,288 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 02:18:39,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 02:18:39,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 02:18:39,289 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 02:18:39,289 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 02:18:42,372 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 02:18:42,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:18:42 BoogieIcfgContainer [2018-10-27 02:18:42,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 02:18:42,375 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 02:18:42,375 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 02:18:42,378 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 02:18:42,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:18:38" (1/3) ... [2018-10-27 02:18:42,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ada0e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:18:42, skipping insertion in model container [2018-10-27 02:18:42,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:18:38" (2/3) ... [2018-10-27 02:18:42,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ada0e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:18:42, skipping insertion in model container [2018-10-27 02:18:42,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:18:42" (3/3) ... [2018-10-27 02:18:42,383 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label02_true-unreach-call.c [2018-10-27 02:18:42,392 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 02:18:42,401 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 02:18:42,420 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 02:18:42,462 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 02:18:42,463 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 02:18:42,463 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 02:18:42,463 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 02:18:42,463 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 02:18:42,464 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 02:18:42,464 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 02:18:42,464 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 02:18:42,491 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-27 02:18:42,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-27 02:18:42,502 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:18:42,503 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:18:42,506 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:18:42,512 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:18:42,512 INFO L82 PathProgramCache]: Analyzing trace with hash 417311892, now seen corresponding path program 1 times [2018-10-27 02:18:42,515 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:18:42,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:18:42,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:18:42,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:18:42,568 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:18:42,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:18:43,101 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 02:18:43,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:18:43,190 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:18:43,190 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 02:18:43,190 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:18:43,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 02:18:43,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 02:18:43,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 02:18:43,216 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-10-27 02:18:45,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:18:45,085 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-10-27 02:18:45,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 02:18:45,089 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2018-10-27 02:18:45,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:18:45,108 INFO L225 Difference]: With dead ends: 574 [2018-10-27 02:18:45,109 INFO L226 Difference]: Without dead ends: 356 [2018-10-27 02:18:45,116 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 02:18:45,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-10-27 02:18:45,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-10-27 02:18:45,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-27 02:18:45,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-10-27 02:18:45,230 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 66 [2018-10-27 02:18:45,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:18:45,231 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-10-27 02:18:45,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 02:18:45,231 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-10-27 02:18:45,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-27 02:18:45,243 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:18:45,243 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:18:45,244 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:18:45,244 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:18:45,244 INFO L82 PathProgramCache]: Analyzing trace with hash 318918200, now seen corresponding path program 1 times [2018-10-27 02:18:45,245 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:18:45,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:18:45,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:18:45,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:18:45,247 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:18:45,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:18:45,547 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:18:45,548 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:18:45,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 02:18:45,548 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:18:45,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 02:18:45,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 02:18:45,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 02:18:45,551 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 4 states. [2018-10-27 02:18:47,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:18:47,728 INFO L93 Difference]: Finished difference Result 1282 states and 2328 transitions. [2018-10-27 02:18:47,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 02:18:47,729 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 186 [2018-10-27 02:18:47,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:18:47,741 INFO L225 Difference]: With dead ends: 1282 [2018-10-27 02:18:47,741 INFO L226 Difference]: Without dead ends: 932 [2018-10-27 02:18:47,749 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 02:18:47,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2018-10-27 02:18:47,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 932. [2018-10-27 02:18:47,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 932 states. [2018-10-27 02:18:47,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1469 transitions. [2018-10-27 02:18:47,819 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1469 transitions. Word has length 186 [2018-10-27 02:18:47,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:18:47,820 INFO L481 AbstractCegarLoop]: Abstraction has 932 states and 1469 transitions. [2018-10-27 02:18:47,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 02:18:47,820 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1469 transitions. [2018-10-27 02:18:47,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-10-27 02:18:47,837 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:18:47,838 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, 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] [2018-10-27 02:18:47,838 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:18:47,838 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:18:47,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1715361491, now seen corresponding path program 1 times [2018-10-27 02:18:47,839 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:18:47,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:18:47,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:18:47,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:18:47,841 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:18:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:18:48,229 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:18:48,230 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:18:48,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 02:18:48,230 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:18:48,232 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 02:18:48,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 02:18:48,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 02:18:48,233 INFO L87 Difference]: Start difference. First operand 932 states and 1469 transitions. Second operand 6 states. [2018-10-27 02:18:52,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:18:52,375 INFO L93 Difference]: Finished difference Result 2162 states and 3509 transitions. [2018-10-27 02:18:52,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 02:18:52,377 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 193 [2018-10-27 02:18:52,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:18:52,391 INFO L225 Difference]: With dead ends: 2162 [2018-10-27 02:18:52,391 INFO L226 Difference]: Without dead ends: 1236 [2018-10-27 02:18:52,402 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 02:18:52,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2018-10-27 02:18:52,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1216. [2018-10-27 02:18:52,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1216 states. [2018-10-27 02:18:52,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1766 transitions. [2018-10-27 02:18:52,470 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1766 transitions. Word has length 193 [2018-10-27 02:18:52,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:18:52,470 INFO L481 AbstractCegarLoop]: Abstraction has 1216 states and 1766 transitions. [2018-10-27 02:18:52,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 02:18:52,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1766 transitions. [2018-10-27 02:18:52,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-10-27 02:18:52,479 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:18:52,480 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-27 02:18:52,480 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:18:52,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:18:52,481 INFO L82 PathProgramCache]: Analyzing trace with hash 475531563, now seen corresponding path program 1 times [2018-10-27 02:18:52,481 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:18:52,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:18:52,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:18:52,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:18:52,482 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:18:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:18:52,748 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 118 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 02:18:52,748 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 02:18:52,749 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 02:18:52,750 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 264 with the following transitions: [2018-10-27 02:18:52,752 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], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [494], [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], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [722], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-27 02:18:52,836 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 02:18:52,836 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 02:18:57,177 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 02:18:57,178 INFO L272 AbstractInterpreter]: Visited 132 different actions 132 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 02:18:57,222 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:18:57,222 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 02:19:02,538 INFO L227 lantSequenceWeakener]: Weakened 242 states. On average, predicates are now at 73.84% of their original sizes. [2018-10-27 02:19:02,538 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 02:19:09,313 INFO L415 sIntCurrentIteration]: We unified 262 AI predicates to 262 [2018-10-27 02:19:09,313 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 02:19:09,314 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 02:19:09,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-10-27 02:19:09,314 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:19:09,315 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-27 02:19:09,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-27 02:19:09,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-27 02:19:09,316 INFO L87 Difference]: Start difference. First operand 1216 states and 1766 transitions. Second operand 11 states. [2018-10-27 02:19:28,141 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 02:20:28,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:20:28,981 INFO L93 Difference]: Finished difference Result 2575 states and 3779 transitions. [2018-10-27 02:20:28,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-27 02:20:28,982 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 263 [2018-10-27 02:20:28,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:20:28,995 INFO L225 Difference]: With dead ends: 2575 [2018-10-27 02:20:28,996 INFO L226 Difference]: Without dead ends: 1365 [2018-10-27 02:20:29,002 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 267 GetRequests, 208 SyntacticMatches, 45 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2018-10-27 02:20:29,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2018-10-27 02:20:29,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1360. [2018-10-27 02:20:29,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1360 states. [2018-10-27 02:20:29,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1918 transitions. [2018-10-27 02:20:29,084 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1918 transitions. Word has length 263 [2018-10-27 02:20:29,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:20:29,084 INFO L481 AbstractCegarLoop]: Abstraction has 1360 states and 1918 transitions. [2018-10-27 02:20:29,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-27 02:20:29,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1918 transitions. [2018-10-27 02:20:29,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-10-27 02:20:29,094 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:20:29,094 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:20:29,095 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:20:29,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:20:29,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1437912543, now seen corresponding path program 1 times [2018-10-27 02:20:29,095 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:20:29,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:20:29,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:20:29,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:20:29,097 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:20:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:20:29,411 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:20:29,412 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 02:20:29,412 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 02:20:29,412 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 274 with the following transitions: [2018-10-27 02:20:29,413 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], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [722], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-27 02:20:29,419 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 02:20:29,420 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 02:20:30,987 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 02:20:51,930 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 02:20:51,930 INFO L272 AbstractInterpreter]: Visited 135 different actions 780 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 02:20:51,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:20:51,939 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 02:20:55,135 INFO L227 lantSequenceWeakener]: Weakened 86 states. On average, predicates are now at 75.05% of their original sizes. [2018-10-27 02:20:55,136 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 02:21:27,134 INFO L415 sIntCurrentIteration]: We unified 272 AI predicates to 272 [2018-10-27 02:21:27,134 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 02:21:27,135 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 02:21:27,135 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-10-27 02:21:27,136 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:21:27,136 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-27 02:21:27,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-27 02:21:27,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2018-10-27 02:21:27,138 INFO L87 Difference]: Start difference. First operand 1360 states and 1918 transitions. Second operand 23 states. Received shutdown request... [2018-10-27 02:22:29,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-27 02:22:29,861 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 02:22:29,866 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 02:22:29,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 02:22:29 BoogieIcfgContainer [2018-10-27 02:22:29,867 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 02:22:29,868 INFO L168 Benchmark]: Toolchain (without parser) took 231644.89 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 2.2 GB in the end (delta: -763.8 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-27 02:22:29,869 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 02:22:29,870 INFO L168 Benchmark]: CACSL2BoogieTranslator took 632.97 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-27 02:22:29,870 INFO L168 Benchmark]: Boogie Procedure Inliner took 217.80 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -814.7 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2018-10-27 02:22:29,871 INFO L168 Benchmark]: Boogie Preprocessor took 132.13 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2018-10-27 02:22:29,872 INFO L168 Benchmark]: RCFGBuilder took 3163.98 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 107.3 MB). Peak memory consumption was 107.3 MB. Max. memory is 7.1 GB. [2018-10-27 02:22:29,873 INFO L168 Benchmark]: TraceAbstraction took 227492.35 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.2 GB in the end (delta: -91.5 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-27 02:22:29,878 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 632.97 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 217.80 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -814.7 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.13 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3163.98 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 107.3 MB). Peak memory consumption was 107.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 227492.35 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.2 GB in the end (delta: -91.5 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 181]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 181). Cancelled while BasicCegarLoop was constructing difference of abstraction (1360states) and FLOYD_HOARE automaton (currently 20 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (876 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 227.4s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 150.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 821 SDtfs, 3723 SDslu, 636 SDs, 0 SdLazy, 4230 SolverSat, 795 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 75.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 564 GetRequests, 430 SyntacticMatches, 84 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 39.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1360occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 27.0s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9959018618031807 AbsIntWeakeningRatio, 0.09737827715355805 AbsIntAvgWeakeningVarsNumRemoved, 111.83333333333333 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 25 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 981 NumberOfCodeBlocks, 981 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 976 ConstructedInterpolants, 0 QuantifiedInterpolants, 684892 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 437/504 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown