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/Problem01_label30_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 19:16:34,203 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 19:16:34,206 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 19:16:34,218 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 19:16:34,218 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 19:16:34,219 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 19:16:34,221 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 19:16:34,223 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 19:16:34,225 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 19:16:34,226 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 19:16:34,227 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 19:16:34,227 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 19:16:34,228 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 19:16:34,229 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 19:16:34,230 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 19:16:34,231 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 19:16:34,232 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 19:16:34,234 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 19:16:34,236 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 19:16:34,238 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 19:16:34,239 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 19:16:34,240 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 19:16:34,243 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 19:16:34,243 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 19:16:34,243 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 19:16:34,244 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 19:16:34,245 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 19:16:34,246 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 19:16:34,247 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 19:16:34,248 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 19:16:34,249 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 19:16:34,250 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 19:16:34,252 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 19:16:34,268 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 19:16:34,269 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 19:16:34,269 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 19:16:34,270 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 19:16:34,270 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 19:16:34,270 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 19:16:34,270 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 19:16:34,271 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 19:16:34,271 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 19:16:34,271 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 19:16:34,271 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 19:16:34,271 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 19:16:34,272 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 19:16:34,272 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 19:16:34,272 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 19:16:34,273 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 19:16:34,273 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 19:16:34,273 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 19:16:34,273 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 19:16:34,274 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 19:16:34,274 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 19:16:34,274 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 19:16:34,274 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 19:16:34,274 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 19:16:34,275 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:16:34,275 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 19:16:34,275 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 19:16:34,275 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 19:16:34,275 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 19:16:34,276 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 19:16:34,276 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 19:16:34,276 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 19:16:34,276 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 19:16:34,276 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 19:16:34,331 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 19:16:34,348 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 19:16:34,352 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 19:16:34,354 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 19:16:34,354 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 19:16:34,355 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label30_true-unreach-call_false-termination.c [2018-10-24 19:16:34,429 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/de0d05163/4d29926f4bf94abead401c297e590c41/FLAGd52ce99e5 [2018-10-24 19:16:35,053 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 19:16:35,055 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label30_true-unreach-call_false-termination.c [2018-10-24 19:16:35,070 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/de0d05163/4d29926f4bf94abead401c297e590c41/FLAGd52ce99e5 [2018-10-24 19:16:35,085 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/de0d05163/4d29926f4bf94abead401c297e590c41 [2018-10-24 19:16:35,104 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 19:16:35,105 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 19:16:35,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 19:16:35,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 19:16:35,111 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 19:16:35,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:16:35" (1/1) ... [2018-10-24 19:16:35,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a25570f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:16:35, skipping insertion in model container [2018-10-24 19:16:35,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:16:35" (1/1) ... [2018-10-24 19:16:35,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 19:16:35,195 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 19:16:35,654 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:16:35,662 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 19:16:35,787 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:16:35,809 INFO L193 MainTranslator]: Completed translation [2018-10-24 19:16:35,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:16:35 WrapperNode [2018-10-24 19:16:35,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 19:16:35,811 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 19:16:35,811 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 19:16:35,811 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 19:16:35,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:16:35" (1/1) ... [2018-10-24 19:16:35,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:16:35" (1/1) ... [2018-10-24 19:16:36,051 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 19:16:36,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 19:16:36,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 19:16:36,052 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 19:16:36,063 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:16:35" (1/1) ... [2018-10-24 19:16:36,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:16:35" (1/1) ... [2018-10-24 19:16:36,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:16:35" (1/1) ... [2018-10-24 19:16:36,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:16:35" (1/1) ... [2018-10-24 19:16:36,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:16:35" (1/1) ... [2018-10-24 19:16:36,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:16:35" (1/1) ... [2018-10-24 19:16:36,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:16:35" (1/1) ... [2018-10-24 19:16:36,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 19:16:36,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 19:16:36,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 19:16:36,137 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 19:16:36,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:16:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:16:36,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 19:16:36,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 19:16:36,193 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 19:16:36,193 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 19:16:36,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 19:16:36,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 19:16:36,194 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 19:16:36,194 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 19:16:39,313 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 19:16:39,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:16:39 BoogieIcfgContainer [2018-10-24 19:16:39,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 19:16:39,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 19:16:39,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 19:16:39,322 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 19:16:39,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:16:35" (1/3) ... [2018-10-24 19:16:39,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26eb08a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:16:39, skipping insertion in model container [2018-10-24 19:16:39,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:16:35" (2/3) ... [2018-10-24 19:16:39,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26eb08a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:16:39, skipping insertion in model container [2018-10-24 19:16:39,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:16:39" (3/3) ... [2018-10-24 19:16:39,327 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label30_true-unreach-call_false-termination.c [2018-10-24 19:16:39,339 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 19:16:39,356 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 19:16:39,377 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 19:16:39,416 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 19:16:39,416 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 19:16:39,416 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 19:16:39,417 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 19:16:39,417 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 19:16:39,417 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 19:16:39,417 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 19:16:39,418 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 19:16:39,444 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-10-24 19:16:39,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-24 19:16:39,459 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:16:39,461 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:16:39,463 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:16:39,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:16:39,470 INFO L82 PathProgramCache]: Analyzing trace with hash 2071841880, now seen corresponding path program 1 times [2018-10-24 19:16:39,473 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:16:39,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:16:39,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:16:39,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:16:39,525 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:16:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:16:40,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:16:40,400 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:16:40,400 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 19:16:40,400 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:16:40,407 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 19:16:40,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 19:16:40,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 19:16:40,428 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 4 states. [2018-10-24 19:16:42,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:16:42,739 INFO L93 Difference]: Finished difference Result 702 states and 1227 transitions. [2018-10-24 19:16:42,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:16:42,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2018-10-24 19:16:42,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:16:42,764 INFO L225 Difference]: With dead ends: 702 [2018-10-24 19:16:42,765 INFO L226 Difference]: Without dead ends: 488 [2018-10-24 19:16:42,772 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 19:16:42,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2018-10-24 19:16:42,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 340. [2018-10-24 19:16:42,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-24 19:16:42,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 571 transitions. [2018-10-24 19:16:42,861 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 571 transitions. Word has length 132 [2018-10-24 19:16:42,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:16:42,863 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 571 transitions. [2018-10-24 19:16:42,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 19:16:42,863 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 571 transitions. [2018-10-24 19:16:42,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-24 19:16:42,879 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:16:42,879 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:16:42,879 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:16:42,881 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:16:42,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1746853559, now seen corresponding path program 1 times [2018-10-24 19:16:42,881 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:16:42,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:16:42,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:16:42,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:16:42,884 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:16:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:16:43,170 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:16:43,375 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:16:43,375 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:16:43,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:16:43,376 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:16:43,378 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:16:43,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:16:43,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:16:43,379 INFO L87 Difference]: Start difference. First operand 340 states and 571 transitions. Second operand 6 states. [2018-10-24 19:16:45,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:16:45,017 INFO L93 Difference]: Finished difference Result 882 states and 1513 transitions. [2018-10-24 19:16:45,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:16:45,018 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-10-24 19:16:45,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:16:45,025 INFO L225 Difference]: With dead ends: 882 [2018-10-24 19:16:45,025 INFO L226 Difference]: Without dead ends: 548 [2018-10-24 19:16:45,030 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:16:45,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2018-10-24 19:16:45,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 531. [2018-10-24 19:16:45,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2018-10-24 19:16:45,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 836 transitions. [2018-10-24 19:16:45,071 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 836 transitions. Word has length 143 [2018-10-24 19:16:45,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:16:45,072 INFO L481 AbstractCegarLoop]: Abstraction has 531 states and 836 transitions. [2018-10-24 19:16:45,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:16:45,072 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 836 transitions. [2018-10-24 19:16:45,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-24 19:16:45,077 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:16:45,077 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:16:45,077 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:16:45,078 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:16:45,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1493139701, now seen corresponding path program 1 times [2018-10-24 19:16:45,078 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:16:45,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:16:45,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:16:45,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:16:45,080 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:16:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:16:45,555 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:16:45,556 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:16:45,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 19:16:45,556 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:16:45,557 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 19:16:45,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 19:16:45,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:16:45,558 INFO L87 Difference]: Start difference. First operand 531 states and 836 transitions. Second operand 5 states. [2018-10-24 19:16:47,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:16:47,379 INFO L93 Difference]: Finished difference Result 1192 states and 1911 transitions. [2018-10-24 19:16:47,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:16:47,387 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2018-10-24 19:16:47,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:16:47,393 INFO L225 Difference]: With dead ends: 1192 [2018-10-24 19:16:47,394 INFO L226 Difference]: Without dead ends: 528 [2018-10-24 19:16:47,399 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:16:47,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2018-10-24 19:16:47,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2018-10-24 19:16:47,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2018-10-24 19:16:47,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 782 transitions. [2018-10-24 19:16:47,441 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 782 transitions. Word has length 144 [2018-10-24 19:16:47,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:16:47,442 INFO L481 AbstractCegarLoop]: Abstraction has 528 states and 782 transitions. [2018-10-24 19:16:47,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 19:16:47,442 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 782 transitions. [2018-10-24 19:16:47,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-24 19:16:47,445 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:16:47,446 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:16:47,446 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:16:47,446 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:16:47,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1935386109, now seen corresponding path program 1 times [2018-10-24 19:16:47,446 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:16:47,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:16:47,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:16:47,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:16:47,448 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:16:47,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:16:47,648 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:16:47,649 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:16:47,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:16:47,649 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:16:47,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:16:47,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:16:47,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:16:47,650 INFO L87 Difference]: Start difference. First operand 528 states and 782 transitions. Second operand 3 states. [2018-10-24 19:16:49,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:16:49,096 INFO L93 Difference]: Finished difference Result 1493 states and 2284 transitions. [2018-10-24 19:16:49,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:16:49,098 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2018-10-24 19:16:49,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:16:49,110 INFO L225 Difference]: With dead ends: 1493 [2018-10-24 19:16:49,110 INFO L226 Difference]: Without dead ends: 971 [2018-10-24 19:16:49,113 INFO L605 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 [2018-10-24 19:16:49,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2018-10-24 19:16:49,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 971. [2018-10-24 19:16:49,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2018-10-24 19:16:49,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1393 transitions. [2018-10-24 19:16:49,161 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1393 transitions. Word has length 148 [2018-10-24 19:16:49,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:16:49,162 INFO L481 AbstractCegarLoop]: Abstraction has 971 states and 1393 transitions. [2018-10-24 19:16:49,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:16:49,162 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1393 transitions. [2018-10-24 19:16:49,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-24 19:16:49,169 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:16:49,169 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:16:49,170 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:16:49,170 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:16:49,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1185891811, now seen corresponding path program 1 times [2018-10-24 19:16:49,170 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:16:49,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:16:49,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:16:49,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:16:49,173 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:16:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:16:49,418 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:16:49,795 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:16:49,795 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:16:49,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:16:49,795 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:16:49,796 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:16:49,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:16:49,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:16:49,796 INFO L87 Difference]: Start difference. First operand 971 states and 1393 transitions. Second operand 6 states. [2018-10-24 19:16:51,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:16:51,265 INFO L93 Difference]: Finished difference Result 2867 states and 4269 transitions. [2018-10-24 19:16:51,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:16:51,270 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2018-10-24 19:16:51,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:16:51,282 INFO L225 Difference]: With dead ends: 2867 [2018-10-24 19:16:51,283 INFO L226 Difference]: Without dead ends: 1902 [2018-10-24 19:16:51,289 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:16:51,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1902 states. [2018-10-24 19:16:51,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1902 to 1873. [2018-10-24 19:16:51,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1873 states. [2018-10-24 19:16:51,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 2527 transitions. [2018-10-24 19:16:51,350 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 2527 transitions. Word has length 164 [2018-10-24 19:16:51,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:16:51,350 INFO L481 AbstractCegarLoop]: Abstraction has 1873 states and 2527 transitions. [2018-10-24 19:16:51,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:16:51,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 2527 transitions. [2018-10-24 19:16:51,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-24 19:16:51,359 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:16:51,359 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:16:51,359 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:16:51,359 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:16:51,360 INFO L82 PathProgramCache]: Analyzing trace with hash -151226562, now seen corresponding path program 1 times [2018-10-24 19:16:51,360 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:16:51,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:16:51,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:16:51,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:16:51,361 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:16:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:16:51,576 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:16:51,576 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:16:51,576 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:16:51,577 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 178 with the following transitions: [2018-10-24 19:16:51,580 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [21], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [97], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [633], [641], [649], [657], [665], [673], [681], [689], [693], [695], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-24 19:16:51,654 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:16:51,654 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:17:00,876 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:17:00,878 INFO L272 AbstractInterpreter]: Visited 69 different actions 69 times. Never merged. Never widened. Never found a fixpoint. Largest state had 42 variables. [2018-10-24 19:17:00,912 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:17:00,912 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:17:03,705 INFO L232 lantSequenceWeakener]: Weakened 105 states. On average, predicates are now at 79.83% of their original sizes. [2018-10-24 19:17:03,705 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:17:05,146 INFO L413 sIntCurrentIteration]: We have 176 unified AI predicates [2018-10-24 19:17:05,146 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:17:05,147 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:17:05,147 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [6] total 16 [2018-10-24 19:17:05,148 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:17:05,148 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 19:17:05,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 19:17:05,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-10-24 19:17:05,149 INFO L87 Difference]: Start difference. First operand 1873 states and 2527 transitions. Second operand 12 states. [2018-10-24 19:17:20,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:17:20,119 INFO L93 Difference]: Finished difference Result 3801 states and 5131 transitions. [2018-10-24 19:17:20,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 19:17:20,120 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 177 [2018-10-24 19:17:20,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:17:20,129 INFO L225 Difference]: With dead ends: 3801 [2018-10-24 19:17:20,130 INFO L226 Difference]: Without dead ends: 1934 [2018-10-24 19:17:20,135 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 182 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2018-10-24 19:17:20,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1934 states. [2018-10-24 19:17:20,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1934 to 1934. [2018-10-24 19:17:20,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1934 states. [2018-10-24 19:17:20,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 2593 transitions. [2018-10-24 19:17:20,191 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 2593 transitions. Word has length 177 [2018-10-24 19:17:20,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:17:20,191 INFO L481 AbstractCegarLoop]: Abstraction has 1934 states and 2593 transitions. [2018-10-24 19:17:20,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-24 19:17:20,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 2593 transitions. [2018-10-24 19:17:20,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-24 19:17:20,200 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:17:20,200 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:17:20,200 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:17:20,201 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:17:20,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1836874565, now seen corresponding path program 1 times [2018-10-24 19:17:20,201 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:17:20,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:17:20,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:17:20,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:17:20,202 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:17:20,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:17:20,402 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 57 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-24 19:17:20,403 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:17:20,403 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:17:20,403 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 187 with the following transitions: [2018-10-24 19:17:20,403 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [10], [14], [18], [21], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [97], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [633], [641], [649], [657], [665], [673], [681], [689], [693], [695], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-24 19:17:20,411 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:17:20,411 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:17:45,751 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:17:45,751 INFO L272 AbstractInterpreter]: Visited 137 different actions 204 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-10-24 19:17:45,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:17:45,763 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:17:51,089 INFO L232 lantSequenceWeakener]: Weakened 178 states. On average, predicates are now at 80.68% of their original sizes. [2018-10-24 19:17:51,089 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:18:12,157 INFO L413 sIntCurrentIteration]: We have 185 unified AI predicates [2018-10-24 19:18:12,157 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:18:12,158 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:18:12,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-10-24 19:18:12,158 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:18:12,159 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 19:18:12,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 19:18:12,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2018-10-24 19:18:12,159 INFO L87 Difference]: Start difference. First operand 1934 states and 2593 transitions. Second operand 18 states. [2018-10-24 19:18:59,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:18:59,032 INFO L93 Difference]: Finished difference Result 3946 states and 5313 transitions. [2018-10-24 19:18:59,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-24 19:18:59,032 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 186 [2018-10-24 19:18:59,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:18:59,042 INFO L225 Difference]: With dead ends: 3946 [2018-10-24 19:18:59,043 INFO L226 Difference]: Without dead ends: 2079 [2018-10-24 19:18:59,049 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 200 GetRequests, 67 SyntacticMatches, 102 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1211 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=223, Invalid=833, Unknown=0, NotChecked=0, Total=1056 [2018-10-24 19:18:59,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2079 states. [2018-10-24 19:18:59,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2079 to 2072. [2018-10-24 19:18:59,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2072 states. [2018-10-24 19:18:59,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 2741 transitions. [2018-10-24 19:18:59,112 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 2741 transitions. Word has length 186 [2018-10-24 19:18:59,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:18:59,112 INFO L481 AbstractCegarLoop]: Abstraction has 2072 states and 2741 transitions. [2018-10-24 19:18:59,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-24 19:18:59,113 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 2741 transitions. [2018-10-24 19:18:59,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-10-24 19:18:59,122 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:18:59,122 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:18:59,123 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:18:59,123 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:18:59,123 INFO L82 PathProgramCache]: Analyzing trace with hash -315492441, now seen corresponding path program 1 times [2018-10-24 19:18:59,123 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:18:59,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:18:59,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:18:59,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:18:59,125 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:18:59,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:18:59,336 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-10-24 19:18:59,336 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:18:59,337 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:18:59,337 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 220 with the following transitions: [2018-10-24 19:18:59,337 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [21], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [97], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [137], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [633], [641], [649], [657], [665], [673], [681], [689], [693], [695], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-24 19:18:59,344 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:18:59,344 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:19:33,636 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:19:33,636 INFO L272 AbstractInterpreter]: Visited 137 different actions 204 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-10-24 19:19:33,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:19:33,647 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:19:45,475 INFO L232 lantSequenceWeakener]: Weakened 100 states. On average, predicates are now at 81.54% of their original sizes. [2018-10-24 19:19:45,476 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-24 19:20:51,886 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:20:51,891 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:20:51,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:20:51 BoogieIcfgContainer [2018-10-24 19:20:51,891 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:20:51,892 INFO L168 Benchmark]: Toolchain (without parser) took 256787.88 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-24 19:20:51,893 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 19:20:51,894 INFO L168 Benchmark]: CACSL2BoogieTranslator took 703.26 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-24 19:20:51,895 INFO L168 Benchmark]: Boogie Procedure Inliner took 240.89 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 730.3 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 20.7 MB. Max. memory is 7.1 GB. [2018-10-24 19:20:51,896 INFO L168 Benchmark]: Boogie Preprocessor took 84.84 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 19:20:51,896 INFO L168 Benchmark]: RCFGBuilder took 3177.02 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: 105.6 MB). Peak memory consumption was 105.6 MB. Max. memory is 7.1 GB. [2018-10-24 19:20:51,897 INFO L168 Benchmark]: TraceAbstraction took 252575.81 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.7 GB). Free memory was 2.1 GB in the beginning and 3.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-24 19:20:51,902 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 703.26 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 240.89 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 730.3 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 20.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 84.84 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3177.02 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: 105.6 MB). Peak memory consumption was 105.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 252575.81 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.7 GB). Free memory was 2.1 GB in the beginning and 3.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 551]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 551). Cancelled while BasicCegarLoop was analyzing trace of length 220 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 24 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 252.4s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 70.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 842 SDtfs, 3194 SDslu, 788 SDs, 0 SdLazy, 4255 SolverSat, 904 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.0s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 420 GetRequests, 246 SyntacticMatches, 107 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1242 ImplicationChecksByTransitivity, 28.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2072occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 69.0s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9950814311992131 AbsIntWeakeningRatio, 0.20207253886010362 AbsIntAvgWeakeningVarsNumRemoved, 1419.2417962003453 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 201 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 1094 NumberOfCodeBlocks, 1094 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1087 ConstructedInterpolants, 0 QuantifiedInterpolants, 731536 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 173/187 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown