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/Problem11_label56_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:16:30,226 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:16:30,228 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:16:30,244 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:16:30,245 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:16:30,246 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:16:30,248 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:16:30,250 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:16:30,252 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:16:30,253 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:16:30,261 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:16:30,261 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:16:30,264 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:16:30,265 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:16:30,268 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:16:30,269 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:16:30,270 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:16:30,272 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:16:30,276 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:16:30,278 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:16:30,279 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:16:30,280 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:16:30,282 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 21:16:30,282 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 21:16:30,282 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 21:16:30,283 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 21:16:30,284 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 21:16:30,285 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 21:16:30,286 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 21:16:30,287 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 21:16:30,287 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 21:16:30,287 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 21:16:30,288 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:16:30,288 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:16:30,289 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:16:30,289 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:16:30,290 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:16:30,310 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:16:30,310 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:16:30,311 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:16:30,311 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:16:30,311 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:16:30,312 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:16:30,312 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:16:30,312 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:16:30,312 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:16:30,312 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:16:30,312 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:16:30,313 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:16:30,313 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:16:30,314 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:16:30,314 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:16:30,314 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:16:30,314 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:16:30,314 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:16:30,314 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:16:30,315 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:16:30,315 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:16:30,315 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:16:30,315 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:16:30,315 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:16:30,316 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:16:30,316 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:16:30,316 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:16:30,316 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:16:30,316 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:16:30,317 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:16:30,317 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:16:30,317 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:16:30,317 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:16:30,317 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:16:30,362 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:16:30,376 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:16:30,383 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:16:30,384 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:16:30,385 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:16:30,386 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label56_true-unreach-call.c [2018-10-24 21:16:30,448 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/386bff5c4/afcfad72c0604872bad583a0b4b8e6fa/FLAGa417cae49 [2018-10-24 21:16:31,101 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:16:31,102 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label56_true-unreach-call.c [2018-10-24 21:16:31,119 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/386bff5c4/afcfad72c0604872bad583a0b4b8e6fa/FLAGa417cae49 [2018-10-24 21:16:31,136 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/386bff5c4/afcfad72c0604872bad583a0b4b8e6fa [2018-10-24 21:16:31,147 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:16:31,149 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:16:31,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:16:31,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:16:31,155 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:16:31,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:16:31" (1/1) ... [2018-10-24 21:16:31,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@301aed34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:31, skipping insertion in model container [2018-10-24 21:16:31,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:16:31" (1/1) ... [2018-10-24 21:16:31,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:16:31,238 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:16:31,860 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:16:31,872 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:16:32,070 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:16:32,091 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:16:32,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:32 WrapperNode [2018-10-24 21:16:32,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:16:32,093 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:16:32,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:16:32,093 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:16:32,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:32" (1/1) ... [2018-10-24 21:16:32,135 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:32" (1/1) ... [2018-10-24 21:16:32,369 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:16:32,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:16:32,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:16:32,370 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:16:32,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:32" (1/1) ... [2018-10-24 21:16:32,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:32" (1/1) ... [2018-10-24 21:16:32,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:32" (1/1) ... [2018-10-24 21:16:32,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:32" (1/1) ... [2018-10-24 21:16:32,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:32" (1/1) ... [2018-10-24 21:16:32,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:32" (1/1) ... [2018-10-24 21:16:32,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:32" (1/1) ... [2018-10-24 21:16:32,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:16:32,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:16:32,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:16:32,522 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:16:32,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:16:32,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:16:32,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:16:32,585 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:16:32,585 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:16:32,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:16:32,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:16:32,586 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:16:32,586 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:16:36,867 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:16:36,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:16:36 BoogieIcfgContainer [2018-10-24 21:16:36,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:16:36,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:16:36,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:16:36,877 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:16:36,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:16:31" (1/3) ... [2018-10-24 21:16:36,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60212203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:16:36, skipping insertion in model container [2018-10-24 21:16:36,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:32" (2/3) ... [2018-10-24 21:16:36,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60212203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:16:36, skipping insertion in model container [2018-10-24 21:16:36,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:16:36" (3/3) ... [2018-10-24 21:16:36,882 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label56_true-unreach-call.c [2018-10-24 21:16:36,893 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:16:36,905 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:16:36,925 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:16:36,966 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:16:36,966 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:16:36,966 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:16:36,966 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:16:36,967 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:16:36,967 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:16:36,967 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:16:36,967 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:16:37,008 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-24 21:16:37,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-24 21:16:37,016 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:16:37,017 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] [2018-10-24 21:16:37,020 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:16:37,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:16:37,025 INFO L82 PathProgramCache]: Analyzing trace with hash -822687572, now seen corresponding path program 1 times [2018-10-24 21:16:37,028 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:16:37,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:16:37,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:16:37,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:16:37,087 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:16:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:16:37,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:16:37,569 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:16:37,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:16:37,570 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:16:37,576 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:16:37,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:16:37,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:16:37,594 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-10-24 21:16:39,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:16:39,924 INFO L93 Difference]: Finished difference Result 782 states and 1372 transitions. [2018-10-24 21:16:39,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:16:39,928 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2018-10-24 21:16:39,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:16:39,949 INFO L225 Difference]: With dead ends: 782 [2018-10-24 21:16:39,949 INFO L226 Difference]: Without dead ends: 487 [2018-10-24 21:16:39,959 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:16:39,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2018-10-24 21:16:40,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 482. [2018-10-24 21:16:40,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-10-24 21:16:40,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 843 transitions. [2018-10-24 21:16:40,044 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 843 transitions. Word has length 48 [2018-10-24 21:16:40,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:16:40,045 INFO L481 AbstractCegarLoop]: Abstraction has 482 states and 843 transitions. [2018-10-24 21:16:40,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:16:40,045 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 843 transitions. [2018-10-24 21:16:40,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-24 21:16:40,053 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:16:40,054 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:16:40,054 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:16:40,054 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:16:40,055 INFO L82 PathProgramCache]: Analyzing trace with hash -191480489, now seen corresponding path program 1 times [2018-10-24 21:16:40,055 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:16:40,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:16:40,056 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:16:40,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:16:40,057 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:16:40,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:16:40,608 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:16:40,608 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:16:40,608 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-24 21:16:40,608 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:16:40,611 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 21:16:40,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 21:16:40,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:16:40,611 INFO L87 Difference]: Start difference. First operand 482 states and 843 transitions. Second operand 7 states. [2018-10-24 21:16:47,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:16:47,794 INFO L93 Difference]: Finished difference Result 1760 states and 3239 transitions. [2018-10-24 21:16:47,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 21:16:47,795 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2018-10-24 21:16:47,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:16:47,811 INFO L225 Difference]: With dead ends: 1760 [2018-10-24 21:16:47,811 INFO L226 Difference]: Without dead ends: 1284 [2018-10-24 21:16:47,819 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-24 21:16:47,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2018-10-24 21:16:47,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1037. [2018-10-24 21:16:47,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2018-10-24 21:16:47,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1685 transitions. [2018-10-24 21:16:47,902 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1685 transitions. Word has length 123 [2018-10-24 21:16:47,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:16:47,902 INFO L481 AbstractCegarLoop]: Abstraction has 1037 states and 1685 transitions. [2018-10-24 21:16:47,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 21:16:47,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1685 transitions. [2018-10-24 21:16:47,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-24 21:16:47,919 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:16:47,919 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:16:47,919 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:16:47,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:16:47,920 INFO L82 PathProgramCache]: Analyzing trace with hash -259626392, now seen corresponding path program 1 times [2018-10-24 21:16:47,920 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:16:47,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:16:47,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:16:47,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:16:47,922 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:16:47,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:16:48,264 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 82 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:16:48,265 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:16:48,265 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:16:48,266 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 197 with the following transitions: [2018-10-24 21:16:48,268 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], [285], [287], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [514], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 21:16:48,349 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:16:48,350 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:16:50,310 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:16:50,607 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:16:50,608 INFO L272 AbstractInterpreter]: Visited 80 different actions 80 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-24 21:16:50,637 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:16:50,638 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:16:53,160 INFO L232 lantSequenceWeakener]: Weakened 188 states. On average, predicates are now at 73.67% of their original sizes. [2018-10-24 21:16:53,160 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:16:53,666 INFO L413 sIntCurrentIteration]: We have 195 unified AI predicates [2018-10-24 21:16:53,667 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:16:53,668 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:16:53,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 21:16:53,668 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:16:53,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 21:16:53,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 21:16:53,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:16:53,673 INFO L87 Difference]: Start difference. First operand 1037 states and 1685 transitions. Second operand 7 states. [2018-10-24 21:17:18,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:17:18,164 INFO L93 Difference]: Finished difference Result 2260 states and 3574 transitions. [2018-10-24 21:17:18,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:17:18,165 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 196 [2018-10-24 21:17:18,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:17:18,172 INFO L225 Difference]: With dead ends: 2260 [2018-10-24 21:17:18,172 INFO L226 Difference]: Without dead ends: 1229 [2018-10-24 21:17:18,175 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 196 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:17:18,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2018-10-24 21:17:18,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1227. [2018-10-24 21:17:18,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1227 states. [2018-10-24 21:17:18,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1883 transitions. [2018-10-24 21:17:18,215 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1883 transitions. Word has length 196 [2018-10-24 21:17:18,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:17:18,216 INFO L481 AbstractCegarLoop]: Abstraction has 1227 states and 1883 transitions. [2018-10-24 21:17:18,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 21:17:18,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1883 transitions. [2018-10-24 21:17:18,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-10-24 21:17:18,220 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:17:18,220 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:17:18,221 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:17:18,221 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:17:18,221 INFO L82 PathProgramCache]: Analyzing trace with hash 188115406, now seen corresponding path program 1 times [2018-10-24 21:17:18,222 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:17:18,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:17:18,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:17:18,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:17:18,223 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:17:18,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:17:18,938 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-24 21:17:18,939 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:17:18,939 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:17:18,939 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 241 with the following transitions: [2018-10-24 21:17:18,940 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], [285], [287], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [514], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 21:17:18,946 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:17:18,947 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:17:21,728 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:17:33,119 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:17:33,119 INFO L272 AbstractInterpreter]: Visited 125 different actions 363 times. Merged at 5 different actions 10 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-24 21:17:33,129 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:17:33,129 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:17:35,184 INFO L232 lantSequenceWeakener]: Weakened 152 states. On average, predicates are now at 74.29% of their original sizes. [2018-10-24 21:17:35,184 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:17:42,477 INFO L413 sIntCurrentIteration]: We have 239 unified AI predicates [2018-10-24 21:17:42,478 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:17:42,478 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:17:42,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-10-24 21:17:42,478 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:17:42,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-24 21:17:42,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-24 21:17:42,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2018-10-24 21:17:42,480 INFO L87 Difference]: Start difference. First operand 1227 states and 1883 transitions. Second operand 19 states. [2018-10-24 21:20:04,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:20:04,740 INFO L93 Difference]: Finished difference Result 2456 states and 3936 transitions. [2018-10-24 21:20:04,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-24 21:20:04,740 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 240 [2018-10-24 21:20:04,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:20:04,748 INFO L225 Difference]: With dead ends: 2456 [2018-10-24 21:20:04,748 INFO L226 Difference]: Without dead ends: 1425 [2018-10-24 21:20:04,752 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 252 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=192, Invalid=800, Unknown=0, NotChecked=0, Total=992 [2018-10-24 21:20:04,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2018-10-24 21:20:04,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 1418. [2018-10-24 21:20:04,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1418 states. [2018-10-24 21:20:04,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 2090 transitions. [2018-10-24 21:20:04,882 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 2090 transitions. Word has length 240 [2018-10-24 21:20:04,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:20:04,883 INFO L481 AbstractCegarLoop]: Abstraction has 1418 states and 2090 transitions. [2018-10-24 21:20:04,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-24 21:20:04,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 2090 transitions. [2018-10-24 21:20:04,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-10-24 21:20:04,888 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:20:04,888 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:20:04,889 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:20:04,889 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:20:04,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1100609894, now seen corresponding path program 1 times [2018-10-24 21:20:04,889 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:20:04,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:20:04,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:20:04,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:20:04,891 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:20:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:20:05,286 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-10-24 21:20:05,287 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:20:05,287 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:20:05,287 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:20:05,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:20:05,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:20:05,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:20:05,291 INFO L87 Difference]: Start difference. First operand 1418 states and 2090 transitions. Second operand 4 states. [2018-10-24 21:20:07,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:20:07,616 INFO L93 Difference]: Finished difference Result 3943 states and 6559 transitions. [2018-10-24 21:20:07,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:20:07,616 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 250 [2018-10-24 21:20:07,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:20:07,634 INFO L225 Difference]: With dead ends: 3943 [2018-10-24 21:20:07,634 INFO L226 Difference]: Without dead ends: 2912 [2018-10-24 21:20:07,643 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:20:07,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2018-10-24 21:20:07,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 2896. [2018-10-24 21:20:07,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2896 states. [2018-10-24 21:20:07,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2896 states to 2896 states and 4414 transitions. [2018-10-24 21:20:07,814 INFO L78 Accepts]: Start accepts. Automaton has 2896 states and 4414 transitions. Word has length 250 [2018-10-24 21:20:07,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:20:07,814 INFO L481 AbstractCegarLoop]: Abstraction has 2896 states and 4414 transitions. [2018-10-24 21:20:07,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:20:07,815 INFO L276 IsEmpty]: Start isEmpty. Operand 2896 states and 4414 transitions. [2018-10-24 21:20:07,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-10-24 21:20:07,822 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:20:07,822 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:20:07,823 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:20:07,823 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:20:07,823 INFO L82 PathProgramCache]: Analyzing trace with hash -2052167774, now seen corresponding path program 1 times [2018-10-24 21:20:07,823 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:20:07,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:20:07,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:20:07,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:20:07,825 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:20:07,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:20:08,361 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:20:08,361 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:20:08,361 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:20:08,361 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 267 with the following transitions: [2018-10-24 21:20:08,362 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], [285], [287], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [578], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 21:20:08,367 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:20:08,368 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:20:11,570 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:20:27,045 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:20:27,046 INFO L272 AbstractInterpreter]: Visited 135 different actions 393 times. Merged at 5 different actions 10 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-24 21:20:27,053 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:20:27,053 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates Received shutdown request... [2018-10-24 21:20:29,833 INFO L232 lantSequenceWeakener]: Weakened 47 states. On average, predicates are now at 76.8% of their original sizes. [2018-10-24 21:20:29,833 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:20:29,934 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:20:29,940 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:20:29,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:20:29 BoogieIcfgContainer [2018-10-24 21:20:29,940 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:20:29,941 INFO L168 Benchmark]: Toolchain (without parser) took 238793.28 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -866.2 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 21:20:29,944 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 21:20:29,944 INFO L168 Benchmark]: CACSL2BoogieTranslator took 941.71 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:20:29,945 INFO L168 Benchmark]: Boogie Procedure Inliner took 276.35 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -834.3 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2018-10-24 21:20:29,946 INFO L168 Benchmark]: Boogie Preprocessor took 151.49 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 21:20:29,947 INFO L168 Benchmark]: RCFGBuilder took 4349.23 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 176.0 MB). Peak memory consumption was 176.0 MB. Max. memory is 7.1 GB. [2018-10-24 21:20:29,948 INFO L168 Benchmark]: TraceAbstraction took 233068.92 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.3 GB in the end (delta: -271.4 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-24 21:20:29,953 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 941.71 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 276.35 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -834.3 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 151.49 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 4349.23 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 176.0 MB). Peak memory consumption was 176.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 233068.92 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.3 GB in the end (delta: -271.4 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 129). Cancelled while BasicCegarLoop was analyzing trace of length 267 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 3 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 232.9s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 178.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1349 SDtfs, 3996 SDslu, 753 SDs, 0 SdLazy, 6666 SolverSat, 1137 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 86.7s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 471 GetRequests, 420 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 13.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2896occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 35.2s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9955700130950486 AbsIntWeakeningRatio, 0.12017167381974249 AbsIntAvgWeakeningVarsNumRemoved, 1111.1058655221746 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 277 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 857 NumberOfCodeBlocks, 857 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 852 ConstructedInterpolants, 0 QuantifiedInterpolants, 568295 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 367/520 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown