java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label42_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:30:26,211 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:30:26,213 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:30:26,226 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:30:26,227 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:30:26,228 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:30:26,229 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:30:26,231 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:30:26,233 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:30:26,234 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:30:26,235 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:30:26,235 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:30:26,236 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:30:26,237 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:30:26,238 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:30:26,239 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:30:26,240 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:30:26,242 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:30:26,244 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:30:26,245 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:30:26,246 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:30:26,248 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:30:26,250 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:30:26,250 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:30:26,250 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:30:26,251 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:30:26,252 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:30:26,253 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:30:26,254 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:30:26,255 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:30:26,255 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:30:26,256 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 09:30:26,256 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 09:30:26,256 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 09:30:26,257 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 09:30:26,258 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 09:30:26,258 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 09:30:26,273 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:30:26,274 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:30:26,274 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:30:26,275 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:30:26,275 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:30:26,275 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:30:26,275 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:30:26,276 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:30:26,276 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:30:26,276 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:30:26,276 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:30:26,276 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:30:26,277 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:30:26,277 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:30:26,277 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:30:26,278 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:30:26,278 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:30:26,278 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:30:26,278 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:30:26,278 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:30:26,279 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:30:26,279 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:30:26,279 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:30:26,280 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:30:26,280 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:30:26,280 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:30:26,280 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:30:26,281 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:30:26,281 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:30:26,281 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:30:26,281 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:30:26,281 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:30:26,282 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:30:26,282 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:30:26,282 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:30:26,282 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:30:26,350 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:30:26,364 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:30:26,369 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:30:26,371 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:30:26,372 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:30:26,372 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label42_true-unreach-call.c [2018-11-07 09:30:26,440 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66020ff97/d6bfd78b45eb457ea15b18d87281b48e/FLAG3d6b2db22 [2018-11-07 09:30:27,179 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:30:27,180 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label42_true-unreach-call.c [2018-11-07 09:30:27,214 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66020ff97/d6bfd78b45eb457ea15b18d87281b48e/FLAG3d6b2db22 [2018-11-07 09:30:27,231 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66020ff97/d6bfd78b45eb457ea15b18d87281b48e [2018-11-07 09:30:27,245 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:30:27,248 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:30:27,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:30:27,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:30:27,256 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:30:27,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:30:27" (1/1) ... [2018-11-07 09:30:27,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fc87f20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:30:27, skipping insertion in model container [2018-11-07 09:30:27,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:30:27" (1/1) ... [2018-11-07 09:30:27,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:30:27,397 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:30:28,489 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:30:28,495 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:30:28,906 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:30:28,933 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:30:28,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:30:28 WrapperNode [2018-11-07 09:30:28,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:30:28,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:30:28,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:30:28,935 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:30:28,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:30:28" (1/1) ... [2018-11-07 09:30:29,196 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:30:28" (1/1) ... [2018-11-07 09:30:29,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:30:29,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:30:29,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:30:29,210 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:30:29,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:30:28" (1/1) ... [2018-11-07 09:30:29,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:30:28" (1/1) ... [2018-11-07 09:30:29,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:30:28" (1/1) ... [2018-11-07 09:30:29,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:30:28" (1/1) ... [2018-11-07 09:30:29,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:30:28" (1/1) ... [2018-11-07 09:30:29,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:30:28" (1/1) ... [2018-11-07 09:30:29,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:30:28" (1/1) ... [2018-11-07 09:30:29,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:30:29,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:30:29,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:30:29,442 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:30:29,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:30:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:30:29,514 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:30:29,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:30:29,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:30:29,515 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:30:29,515 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:30:29,516 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:30:29,516 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:30:29,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:30:29,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:30:29,516 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:30:29,516 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:30:37,722 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:30:37,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:30:37 BoogieIcfgContainer [2018-11-07 09:30:37,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:30:37,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:30:37,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:30:37,728 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:30:37,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:30:27" (1/3) ... [2018-11-07 09:30:37,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed0ae55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:30:37, skipping insertion in model container [2018-11-07 09:30:37,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:30:28" (2/3) ... [2018-11-07 09:30:37,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed0ae55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:30:37, skipping insertion in model container [2018-11-07 09:30:37,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:30:37" (3/3) ... [2018-11-07 09:30:37,732 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label42_true-unreach-call.c [2018-11-07 09:30:37,743 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:30:37,752 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:30:37,770 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:30:37,815 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:30:37,815 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:30:37,815 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:30:37,815 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:30:37,816 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:30:37,816 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:30:37,816 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:30:37,816 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:30:37,853 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-11-07 09:30:37,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-11-07 09:30:37,862 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:30:37,864 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] [2018-11-07 09:30:37,866 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:30:37,872 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:30:37,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1611453546, now seen corresponding path program 1 times [2018-11-07 09:30:37,876 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:30:37,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:30:37,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:30:37,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:30:37,926 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:30:38,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:30:38,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:30:38,343 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:30:38,344 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:30:38,344 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:30:38,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:30:38,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:30:38,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:30:38,370 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-11-07 09:30:47,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:30:47,389 INFO L93 Difference]: Finished difference Result 2162 states and 4007 transitions. [2018-11-07 09:30:47,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:30:47,393 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2018-11-07 09:30:47,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:30:47,427 INFO L225 Difference]: With dead ends: 2162 [2018-11-07 09:30:47,427 INFO L226 Difference]: Without dead ends: 1552 [2018-11-07 09:30:47,440 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:30:47,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2018-11-07 09:30:47,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1525. [2018-11-07 09:30:47,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1525 states. [2018-11-07 09:30:47,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2696 transitions. [2018-11-07 09:30:47,614 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2696 transitions. Word has length 47 [2018-11-07 09:30:47,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:30:47,615 INFO L480 AbstractCegarLoop]: Abstraction has 1525 states and 2696 transitions. [2018-11-07 09:30:47,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:30:47,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2696 transitions. [2018-11-07 09:30:47,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-11-07 09:30:47,624 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:30:47,625 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:30:47,625 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:30:47,625 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:30:47,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1100502633, now seen corresponding path program 1 times [2018-11-07 09:30:47,626 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:30:47,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:30:47,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:30:47,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:30:47,627 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:30:47,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:30:48,008 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:30:48,008 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:30:48,008 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:30:48,008 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:30:48,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:30:48,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:30:48,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:30:48,011 INFO L87 Difference]: Start difference. First operand 1525 states and 2696 transitions. Second operand 6 states. [2018-11-07 09:31:00,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:31:00,199 INFO L93 Difference]: Finished difference Result 5786 states and 10670 transitions. [2018-11-07 09:31:00,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:31:00,200 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-11-07 09:31:00,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:31:00,238 INFO L225 Difference]: With dead ends: 5786 [2018-11-07 09:31:00,239 INFO L226 Difference]: Without dead ends: 4267 [2018-11-07 09:31:00,261 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:31:00,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4267 states. [2018-11-07 09:31:00,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4267 to 4241. [2018-11-07 09:31:00,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4241 states. [2018-11-07 09:31:00,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4241 states to 4241 states and 6348 transitions. [2018-11-07 09:31:00,430 INFO L78 Accepts]: Start accepts. Automaton has 4241 states and 6348 transitions. Word has length 126 [2018-11-07 09:31:00,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:31:00,433 INFO L480 AbstractCegarLoop]: Abstraction has 4241 states and 6348 transitions. [2018-11-07 09:31:00,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:31:00,433 INFO L276 IsEmpty]: Start isEmpty. Operand 4241 states and 6348 transitions. [2018-11-07 09:31:00,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-11-07 09:31:00,445 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:31:00,446 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:31:00,446 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:31:00,446 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:31:00,446 INFO L82 PathProgramCache]: Analyzing trace with hash 427806551, now seen corresponding path program 1 times [2018-11-07 09:31:00,446 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:31:00,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:31:00,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:31:00,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:31:00,450 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:31:00,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:31:00,719 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:31:00,720 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:31:00,720 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:31:00,720 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:31:00,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:31:00,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:31:00,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:31:00,721 INFO L87 Difference]: Start difference. First operand 4241 states and 6348 transitions. Second operand 6 states. [2018-11-07 09:31:05,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:31:05,236 INFO L93 Difference]: Finished difference Result 12261 states and 20033 transitions. [2018-11-07 09:31:05,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:31:05,237 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-11-07 09:31:05,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:31:05,302 INFO L225 Difference]: With dead ends: 12261 [2018-11-07 09:31:05,302 INFO L226 Difference]: Without dead ends: 8026 [2018-11-07 09:31:05,327 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:31:05,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8026 states. [2018-11-07 09:31:05,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8026 to 7941. [2018-11-07 09:31:05,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7941 states. [2018-11-07 09:31:05,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7941 states to 7941 states and 11956 transitions. [2018-11-07 09:31:05,611 INFO L78 Accepts]: Start accepts. Automaton has 7941 states and 11956 transitions. Word has length 127 [2018-11-07 09:31:05,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:31:05,612 INFO L480 AbstractCegarLoop]: Abstraction has 7941 states and 11956 transitions. [2018-11-07 09:31:05,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:31:05,613 INFO L276 IsEmpty]: Start isEmpty. Operand 7941 states and 11956 transitions. [2018-11-07 09:31:05,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-11-07 09:31:05,618 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:31:05,618 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 09:31:05,619 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:31:05,619 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:31:05,619 INFO L82 PathProgramCache]: Analyzing trace with hash 126489534, now seen corresponding path program 1 times [2018-11-07 09:31:05,619 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:31:05,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:31:05,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:31:05,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:31:05,623 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:31:05,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:31:05,952 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:31:06,016 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 81 proven. 5 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-07 09:31:06,016 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:31:06,016 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:31:06,017 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 202 with the following transitions: [2018-11-07 09:31:06,019 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [986], [988], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1239], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:31:06,064 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:31:06,065 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:31:07,090 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:31:07,092 INFO L272 AbstractInterpreter]: Visited 88 different actions 250 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 09:31:07,128 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:31:07,130 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:31:07,130 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:31:07,130 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:31:07,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:31:07,150 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:31:07,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:31:07,256 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:31:07,721 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:31:07,721 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:31:08,286 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:31:08,325 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:31:08,326 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 09:31:08,326 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:31:08,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:31:08,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:31:08,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 09:31:08,329 INFO L87 Difference]: Start difference. First operand 7941 states and 11956 transitions. Second operand 9 states. [2018-11-07 09:31:17,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:31:17,635 INFO L93 Difference]: Finished difference Result 19976 states and 30387 transitions. [2018-11-07 09:31:17,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-07 09:31:17,636 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 201 [2018-11-07 09:31:17,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:31:17,735 INFO L225 Difference]: With dead ends: 19976 [2018-11-07 09:31:17,735 INFO L226 Difference]: Without dead ends: 12006 [2018-11-07 09:31:17,796 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 400 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2018-11-07 09:31:17,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12006 states. [2018-11-07 09:31:18,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12006 to 11981. [2018-11-07 09:31:18,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11981 states. [2018-11-07 09:31:18,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11981 states to 11981 states and 15409 transitions. [2018-11-07 09:31:18,123 INFO L78 Accepts]: Start accepts. Automaton has 11981 states and 15409 transitions. Word has length 201 [2018-11-07 09:31:18,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:31:18,124 INFO L480 AbstractCegarLoop]: Abstraction has 11981 states and 15409 transitions. [2018-11-07 09:31:18,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:31:18,124 INFO L276 IsEmpty]: Start isEmpty. Operand 11981 states and 15409 transitions. [2018-11-07 09:31:18,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-11-07 09:31:18,129 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:31:18,130 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 09:31:18,130 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:31:18,130 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:31:18,131 INFO L82 PathProgramCache]: Analyzing trace with hash 118712312, now seen corresponding path program 1 times [2018-11-07 09:31:18,131 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:31:18,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:31:18,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:31:18,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:31:18,132 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:31:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:31:18,461 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:31:18,684 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 104 proven. 48 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-07 09:31:18,684 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:31:18,684 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:31:18,684 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 215 with the following transitions: [2018-11-07 09:31:18,685 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [986], [988], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1239], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:31:18,690 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:31:18,691 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:31:18,975 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:31:18,975 INFO L272 AbstractInterpreter]: Visited 97 different actions 193 times. Merged at 7 different actions 11 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-07 09:31:19,006 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:31:19,006 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:31:19,006 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:31:19,006 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:31:19,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:31:19,023 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:31:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:31:19,099 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:31:19,156 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-11-07 09:31:19,156 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:31:19,295 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-11-07 09:31:19,315 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:31:19,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-11-07 09:31:19,316 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:31:19,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:31:19,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:31:19,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:31:19,317 INFO L87 Difference]: Start difference. First operand 11981 states and 15409 transitions. Second operand 3 states. [2018-11-07 09:31:22,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:31:22,151 INFO L93 Difference]: Finished difference Result 23956 states and 30812 transitions. [2018-11-07 09:31:22,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:31:22,153 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 214 [2018-11-07 09:31:22,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:31:22,198 INFO L225 Difference]: With dead ends: 23956 [2018-11-07 09:31:22,199 INFO L226 Difference]: Without dead ends: 11981 [2018-11-07 09:31:22,238 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 428 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:31:22,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11981 states. [2018-11-07 09:31:22,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11981 to 11981. [2018-11-07 09:31:22,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11981 states. [2018-11-07 09:31:22,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11981 states to 11981 states and 14806 transitions. [2018-11-07 09:31:22,493 INFO L78 Accepts]: Start accepts. Automaton has 11981 states and 14806 transitions. Word has length 214 [2018-11-07 09:31:22,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:31:22,494 INFO L480 AbstractCegarLoop]: Abstraction has 11981 states and 14806 transitions. [2018-11-07 09:31:22,494 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:31:22,494 INFO L276 IsEmpty]: Start isEmpty. Operand 11981 states and 14806 transitions. [2018-11-07 09:31:22,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-11-07 09:31:22,502 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:31:22,502 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:31:22,503 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:31:22,503 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:31:22,503 INFO L82 PathProgramCache]: Analyzing trace with hash 115888515, now seen corresponding path program 1 times [2018-11-07 09:31:22,503 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:31:22,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:31:22,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:31:22,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:31:22,505 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:31:22,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:31:23,020 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 275 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-11-07 09:31:23,020 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:31:23,020 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:31:23,021 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 292 with the following transitions: [2018-11-07 09:31:23,021 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [986], [988], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1231], [1232], [1236], [1239], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:31:23,030 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:31:23,030 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:31:23,320 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:31:23,321 INFO L272 AbstractInterpreter]: Visited 98 different actions 197 times. Merged at 8 different actions 13 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-07 09:31:23,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:31:23,358 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:31:23,358 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:31:23,358 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:31:23,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:31:23,376 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:31:23,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:31:23,481 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:31:23,676 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 275 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-11-07 09:31:23,676 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:31:24,381 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 275 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-11-07 09:31:24,401 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:31:24,401 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-11-07 09:31:24,401 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:31:24,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 09:31:24,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 09:31:24,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:31:24,403 INFO L87 Difference]: Start difference. First operand 11981 states and 14806 transitions. Second operand 7 states. [2018-11-07 09:31:33,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:31:33,596 INFO L93 Difference]: Finished difference Result 35149 states and 44133 transitions. [2018-11-07 09:31:33,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 09:31:33,598 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 291 [2018-11-07 09:31:33,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:31:33,685 INFO L225 Difference]: With dead ends: 35149 [2018-11-07 09:31:33,685 INFO L226 Difference]: Without dead ends: 23140 [2018-11-07 09:31:33,720 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 584 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-11-07 09:31:33,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23140 states. [2018-11-07 09:31:34,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23140 to 21831. [2018-11-07 09:31:34,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21831 states. [2018-11-07 09:31:34,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21831 states to 21831 states and 26150 transitions. [2018-11-07 09:31:34,196 INFO L78 Accepts]: Start accepts. Automaton has 21831 states and 26150 transitions. Word has length 291 [2018-11-07 09:31:34,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:31:34,198 INFO L480 AbstractCegarLoop]: Abstraction has 21831 states and 26150 transitions. [2018-11-07 09:31:34,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 09:31:34,198 INFO L276 IsEmpty]: Start isEmpty. Operand 21831 states and 26150 transitions. [2018-11-07 09:31:34,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-11-07 09:31:34,217 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:31:34,218 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:31:34,218 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:31:34,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:31:34,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1831026004, now seen corresponding path program 1 times [2018-11-07 09:31:34,219 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:31:34,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:31:34,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:31:34,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:31:34,220 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:31:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:31:35,069 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 130 proven. 146 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-11-07 09:31:35,069 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:31:35,069 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:31:35,069 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 338 with the following transitions: [2018-11-07 09:31:35,070 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [986], [988], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1231], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1443], [1448], [1450], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:31:35,074 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:31:35,074 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:31:35,431 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:31:35,432 INFO L272 AbstractInterpreter]: Visited 135 different actions 270 times. Merged at 8 different actions 14 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-07 09:31:35,474 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:31:35,474 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:31:35,474 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:31:35,475 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:31:35,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:31:35,491 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:31:35,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:31:35,595 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:31:36,043 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 238 proven. 2 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2018-11-07 09:31:36,043 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:31:36,278 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-11-07 09:31:36,715 WARN L179 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 24 [2018-11-07 09:31:37,421 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 130 proven. 227 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:31:37,442 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:31:37,443 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 15 [2018-11-07 09:31:37,443 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:31:37,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 09:31:37,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 09:31:37,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-11-07 09:31:37,445 INFO L87 Difference]: Start difference. First operand 21831 states and 26150 transitions. Second operand 10 states. [2018-11-07 09:31:50,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:31:50,115 INFO L93 Difference]: Finished difference Result 71556 states and 89640 transitions. [2018-11-07 09:31:50,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-07 09:31:50,116 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 337 [2018-11-07 09:31:50,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:31:50,295 INFO L225 Difference]: With dead ends: 71556 [2018-11-07 09:31:50,295 INFO L226 Difference]: Without dead ends: 45886 [2018-11-07 09:31:50,372 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 679 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=210, Invalid=492, Unknown=0, NotChecked=0, Total=702 [2018-11-07 09:31:50,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45886 states. [2018-11-07 09:31:51,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45886 to 39757. [2018-11-07 09:31:51,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39757 states. [2018-11-07 09:31:51,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39757 states to 39757 states and 49159 transitions. [2018-11-07 09:31:51,279 INFO L78 Accepts]: Start accepts. Automaton has 39757 states and 49159 transitions. Word has length 337 [2018-11-07 09:31:51,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:31:51,279 INFO L480 AbstractCegarLoop]: Abstraction has 39757 states and 49159 transitions. [2018-11-07 09:31:51,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 09:31:51,280 INFO L276 IsEmpty]: Start isEmpty. Operand 39757 states and 49159 transitions. [2018-11-07 09:31:51,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-11-07 09:31:51,305 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:31:51,305 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:31:51,307 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:31:51,307 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:31:51,307 INFO L82 PathProgramCache]: Analyzing trace with hash -227933580, now seen corresponding path program 1 times [2018-11-07 09:31:51,307 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:31:51,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:31:51,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:31:51,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:31:51,309 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:31:51,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:31:51,777 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-11-07 09:31:51,777 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:31:51,777 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:31:51,778 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:31:51,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:31:51,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:31:51,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:31:51,779 INFO L87 Difference]: Start difference. First operand 39757 states and 49159 transitions. Second operand 4 states. [2018-11-07 09:31:58,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:31:58,080 INFO L93 Difference]: Finished difference Result 108856 states and 139286 transitions. [2018-11-07 09:31:58,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:31:58,080 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 374 [2018-11-07 09:31:58,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:31:58,254 INFO L225 Difference]: With dead ends: 108856 [2018-11-07 09:31:58,254 INFO L226 Difference]: Without dead ends: 53298 [2018-11-07 09:31:58,399 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:31:58,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53298 states. [2018-11-07 09:31:59,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53298 to 49236. [2018-11-07 09:31:59,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49236 states. [2018-11-07 09:31:59,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49236 states to 49236 states and 59895 transitions. [2018-11-07 09:31:59,445 INFO L78 Accepts]: Start accepts. Automaton has 49236 states and 59895 transitions. Word has length 374 [2018-11-07 09:31:59,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:31:59,446 INFO L480 AbstractCegarLoop]: Abstraction has 49236 states and 59895 transitions. [2018-11-07 09:31:59,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:31:59,446 INFO L276 IsEmpty]: Start isEmpty. Operand 49236 states and 59895 transitions. [2018-11-07 09:31:59,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2018-11-07 09:31:59,485 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:31:59,485 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:31:59,486 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:31:59,486 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:31:59,486 INFO L82 PathProgramCache]: Analyzing trace with hash 479746725, now seen corresponding path program 1 times [2018-11-07 09:31:59,486 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:31:59,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:31:59,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:31:59,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:31:59,487 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:31:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:32:00,002 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 389 proven. 2 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2018-11-07 09:32:00,003 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:32:00,003 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:32:00,003 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 479 with the following transitions: [2018-11-07 09:32:00,003 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [986], [988], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1376], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1654], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:32:00,008 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:32:00,008 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:32:00,716 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:32:00,717 INFO L272 AbstractInterpreter]: Visited 171 different actions 513 times. Merged at 8 different actions 23 times. Never widened. Found 6 fixpoints after 4 different actions. Largest state had 26 variables. [2018-11-07 09:32:00,756 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:32:00,756 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:32:00,756 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:32:00,756 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:32:00,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:32:00,773 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:32:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:32:00,921 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:32:01,577 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 389 proven. 2 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2018-11-07 09:32:01,577 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:32:01,899 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 389 proven. 2 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2018-11-07 09:32:01,921 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:32:01,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2018-11-07 09:32:01,922 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:32:01,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:32:01,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:32:01,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:32:01,923 INFO L87 Difference]: Start difference. First operand 49236 states and 59895 transitions. Second operand 6 states. [2018-11-07 09:32:09,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:32:09,155 INFO L93 Difference]: Finished difference Result 111672 states and 137753 transitions. [2018-11-07 09:32:09,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 09:32:09,156 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 478 [2018-11-07 09:32:09,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:32:09,360 INFO L225 Difference]: With dead ends: 111672 [2018-11-07 09:32:09,361 INFO L226 Difference]: Without dead ends: 56446 [2018-11-07 09:32:09,517 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 970 GetRequests, 958 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-11-07 09:32:09,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56446 states. [2018-11-07 09:32:11,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56446 to 52831. [2018-11-07 09:32:11,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52831 states. [2018-11-07 09:32:11,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52831 states to 52831 states and 64480 transitions. [2018-11-07 09:32:11,205 INFO L78 Accepts]: Start accepts. Automaton has 52831 states and 64480 transitions. Word has length 478 [2018-11-07 09:32:11,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:32:11,206 INFO L480 AbstractCegarLoop]: Abstraction has 52831 states and 64480 transitions. [2018-11-07 09:32:11,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:32:11,206 INFO L276 IsEmpty]: Start isEmpty. Operand 52831 states and 64480 transitions. [2018-11-07 09:32:11,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2018-11-07 09:32:11,232 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:32:11,233 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:32:11,233 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:32:11,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:32:11,234 INFO L82 PathProgramCache]: Analyzing trace with hash 610369496, now seen corresponding path program 1 times [2018-11-07 09:32:11,234 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:32:11,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:32:11,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:32:11,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:32:11,235 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:32:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:32:11,893 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 389 proven. 2 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2018-11-07 09:32:11,894 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:32:11,894 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:32:11,894 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 498 with the following transitions: [2018-11-07 09:32:11,895 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [986], [988], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1376], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1758], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:32:11,906 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:32:11,906 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:32:12,744 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:32:12,745 INFO L272 AbstractInterpreter]: Visited 190 different actions 570 times. Merged at 8 different actions 23 times. Never widened. Found 6 fixpoints after 4 different actions. Largest state had 26 variables. [2018-11-07 09:32:12,778 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:32:12,779 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:32:12,779 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:32:12,779 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:32:12,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:32:12,794 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:32:12,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:32:12,935 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:32:13,203 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 389 proven. 2 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2018-11-07 09:32:13,203 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:32:13,688 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 389 proven. 2 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2018-11-07 09:32:13,725 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:32:13,725 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2018-11-07 09:32:13,725 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:32:13,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:32:13,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:32:13,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:32:13,728 INFO L87 Difference]: Start difference. First operand 52831 states and 64480 transitions. Second operand 6 states. [2018-11-07 09:32:20,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:32:20,756 INFO L93 Difference]: Finished difference Result 119233 states and 147934 transitions. [2018-11-07 09:32:20,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 09:32:20,757 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 497 [2018-11-07 09:32:20,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:32:20,980 INFO L225 Difference]: With dead ends: 119233 [2018-11-07 09:32:20,980 INFO L226 Difference]: Without dead ends: 61338 [2018-11-07 09:32:21,119 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1007 GetRequests, 994 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2018-11-07 09:32:21,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61338 states. [2018-11-07 09:32:22,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61338 to 59177. [2018-11-07 09:32:22,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59177 states. [2018-11-07 09:32:22,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59177 states to 59177 states and 71895 transitions. [2018-11-07 09:32:22,421 INFO L78 Accepts]: Start accepts. Automaton has 59177 states and 71895 transitions. Word has length 497 [2018-11-07 09:32:22,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:32:22,422 INFO L480 AbstractCegarLoop]: Abstraction has 59177 states and 71895 transitions. [2018-11-07 09:32:22,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:32:22,423 INFO L276 IsEmpty]: Start isEmpty. Operand 59177 states and 71895 transitions. [2018-11-07 09:32:22,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2018-11-07 09:32:22,449 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:32:22,449 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:32:22,450 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:32:22,450 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:32:22,450 INFO L82 PathProgramCache]: Analyzing trace with hash -569907959, now seen corresponding path program 1 times [2018-11-07 09:32:22,450 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:32:22,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:32:22,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:32:22,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:32:22,452 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:32:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:32:22,904 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-11-07 09:32:22,905 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:32:22,905 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:32:22,905 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 501 with the following transitions: [2018-11-07 09:32:22,906 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [986], [988], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1420], [1425], [1427], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2031], [2034], [2038], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:32:22,915 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:32:22,915 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:32:23,454 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:32:23,454 INFO L272 AbstractInterpreter]: Visited 256 different actions 510 times. Merged at 8 different actions 14 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-07 09:32:23,482 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:32:23,482 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:32:23,482 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:32:23,482 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:32:23,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:32:23,498 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:32:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:32:23,647 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:32:24,753 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 287 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-11-07 09:32:24,753 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:32:25,181 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-11-07 09:32:25,225 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 09:32:25,225 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 3 [2018-11-07 09:32:25,225 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:32:25,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:32:25,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:32:25,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:32:25,227 INFO L87 Difference]: Start difference. First operand 59177 states and 71895 transitions. Second operand 3 states. [2018-11-07 09:32:29,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:32:29,805 INFO L93 Difference]: Finished difference Result 137830 states and 169333 transitions. [2018-11-07 09:32:29,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:32:29,805 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 500 [2018-11-07 09:32:29,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:32:29,961 INFO L225 Difference]: With dead ends: 137830 [2018-11-07 09:32:29,961 INFO L226 Difference]: Without dead ends: 66611 [2018-11-07 09:32:30,065 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1002 GetRequests, 1001 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:32:30,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66611 states. [2018-11-07 09:32:30,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66611 to 63069. [2018-11-07 09:32:30,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63069 states. [2018-11-07 09:32:31,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63069 states to 63069 states and 76172 transitions. [2018-11-07 09:32:31,096 INFO L78 Accepts]: Start accepts. Automaton has 63069 states and 76172 transitions. Word has length 500 [2018-11-07 09:32:31,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:32:31,097 INFO L480 AbstractCegarLoop]: Abstraction has 63069 states and 76172 transitions. [2018-11-07 09:32:31,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:32:31,097 INFO L276 IsEmpty]: Start isEmpty. Operand 63069 states and 76172 transitions. [2018-11-07 09:32:31,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2018-11-07 09:32:31,131 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:32:31,132 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:32:31,132 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:32:31,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:32:31,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1761012760, now seen corresponding path program 1 times [2018-11-07 09:32:31,133 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:32:31,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:32:31,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:32:31,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:32:31,136 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:32:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:32:31,755 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 594 trivial. 0 not checked. [2018-11-07 09:32:31,756 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:32:31,756 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 09:32:31,756 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:32:31,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:32:31,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:32:31,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:32:31,757 INFO L87 Difference]: Start difference. First operand 63069 states and 76172 transitions. Second operand 3 states. [2018-11-07 09:32:36,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:32:36,243 INFO L93 Difference]: Finished difference Result 134179 states and 162926 transitions. [2018-11-07 09:32:36,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:32:36,243 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 583 [2018-11-07 09:32:36,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:32:36,406 INFO L225 Difference]: With dead ends: 134179 [2018-11-07 09:32:36,406 INFO L226 Difference]: Without dead ends: 66855 [2018-11-07 09:32:36,487 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:32:36,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66855 states. [2018-11-07 09:32:37,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66855 to 62064. [2018-11-07 09:32:37,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62064 states. [2018-11-07 09:32:37,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62064 states to 62064 states and 72941 transitions. [2018-11-07 09:32:37,349 INFO L78 Accepts]: Start accepts. Automaton has 62064 states and 72941 transitions. Word has length 583 [2018-11-07 09:32:37,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:32:37,349 INFO L480 AbstractCegarLoop]: Abstraction has 62064 states and 72941 transitions. [2018-11-07 09:32:37,350 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:32:37,350 INFO L276 IsEmpty]: Start isEmpty. Operand 62064 states and 72941 transitions. [2018-11-07 09:32:37,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 950 [2018-11-07 09:32:37,425 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:32:37,426 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:32:37,427 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:32:37,427 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:32:37,427 INFO L82 PathProgramCache]: Analyzing trace with hash -483040668, now seen corresponding path program 1 times [2018-11-07 09:32:37,427 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:32:37,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:32:37,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:32:37,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:32:37,428 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:32:37,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:32:39,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1329 backedges. 532 proven. 114 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2018-11-07 09:32:39,043 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:32:39,043 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:32:39,043 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 950 with the following transitions: [2018-11-07 09:32:39,044 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [154], [158], [169], [173], [177], [181], [185], [189], [193], [204], [208], [212], [216], [227], [231], [235], [239], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [297], [301], [305], [309], [313], [317], [321], [325], [336], [340], [344], [348], [352], [363], [367], [371], [375], [379], [383], [387], [390], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [986], [988], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1385], [1389], [1393], [1397], [1401], [1404], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1917], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:32:39,052 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:32:39,052 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:32:41,025 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:32:41,026 INFO L272 AbstractInterpreter]: Visited 384 different actions 771 times. Merged at 10 different actions 18 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-07 09:32:41,063 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:32:41,063 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:32:41,063 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:32:41,063 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:32:41,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:32:41,082 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:32:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:32:41,347 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:32:42,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1329 backedges. 1006 proven. 2 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-11-07 09:32:42,204 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:32:43,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1329 backedges. 532 proven. 114 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2018-11-07 09:32:43,187 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:32:43,188 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2018-11-07 09:32:43,188 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:32:43,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:32:43,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:32:43,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:32:43,193 INFO L87 Difference]: Start difference. First operand 62064 states and 72941 transitions. Second operand 6 states. [2018-11-07 09:32:48,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:32:48,604 INFO L93 Difference]: Finished difference Result 135096 states and 158435 transitions. [2018-11-07 09:32:48,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 09:32:48,605 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 949 [2018-11-07 09:32:48,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:32:48,769 INFO L225 Difference]: With dead ends: 135096 [2018-11-07 09:32:48,770 INFO L226 Difference]: Without dead ends: 74343 [2018-11-07 09:32:48,846 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1910 GetRequests, 1898 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-11-07 09:32:48,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74343 states. [2018-11-07 09:32:49,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74343 to 71671. [2018-11-07 09:32:49,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71671 states. [2018-11-07 09:32:49,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71671 states to 71671 states and 83388 transitions. [2018-11-07 09:32:49,783 INFO L78 Accepts]: Start accepts. Automaton has 71671 states and 83388 transitions. Word has length 949 [2018-11-07 09:32:49,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:32:49,784 INFO L480 AbstractCegarLoop]: Abstraction has 71671 states and 83388 transitions. [2018-11-07 09:32:49,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:32:49,784 INFO L276 IsEmpty]: Start isEmpty. Operand 71671 states and 83388 transitions. [2018-11-07 09:32:49,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 956 [2018-11-07 09:32:49,877 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:32:49,878 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:32:49,878 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:32:49,879 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:32:49,879 INFO L82 PathProgramCache]: Analyzing trace with hash -630462077, now seen corresponding path program 1 times [2018-11-07 09:32:49,879 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:32:49,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:32:49,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:32:49,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:32:49,880 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:32:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:32:51,435 INFO L134 CoverageAnalysis]: Checked inductivity of 943 backedges. 176 proven. 5 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2018-11-07 09:32:51,435 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:32:51,435 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:32:51,435 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 956 with the following transitions: [2018-11-07 09:32:51,436 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [21], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [154], [158], [169], [173], [177], [181], [185], [189], [193], [204], [208], [212], [216], [227], [231], [235], [239], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [297], [301], [305], [309], [313], [317], [321], [325], [336], [340], [344], [348], [352], [363], [367], [371], [375], [379], [383], [387], [391], [395], [399], [403], [407], [411], [415], [426], [430], [434], [445], [449], [453], [464], [475], [479], [483], [487], [491], [495], [499], [503], [507], [511], [515], [519], [530], [534], [538], [549], [553], [557], [561], [565], [569], [573], [584], [587], [590], [594], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [986], [988], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:32:51,444 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:32:51,444 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:32:52,518 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:32:52,519 INFO L272 AbstractInterpreter]: Visited 421 different actions 839 times. Merged at 8 different actions 13 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-07 09:32:52,556 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:32:52,556 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:32:52,556 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:32:52,556 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:32:52,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:32:52,569 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:32:52,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:32:52,832 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:32:54,059 INFO L134 CoverageAnalysis]: Checked inductivity of 943 backedges. 787 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-11-07 09:32:54,060 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:32:55,376 INFO L134 CoverageAnalysis]: Checked inductivity of 943 backedges. 182 proven. 11 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked. [2018-11-07 09:32:55,397 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 09:32:55,397 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2018-11-07 09:32:55,397 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:32:55,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:32:55,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:32:55,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:32:55,399 INFO L87 Difference]: Start difference. First operand 71671 states and 83388 transitions. Second operand 3 states. [2018-11-07 09:32:57,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:32:57,525 INFO L93 Difference]: Finished difference Result 138876 states and 161867 transitions. [2018-11-07 09:32:57,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:32:57,525 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 955 [2018-11-07 09:32:57,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:32:57,717 INFO L225 Difference]: With dead ends: 138876 [2018-11-07 09:32:57,717 INFO L226 Difference]: Without dead ends: 68082 [2018-11-07 09:32:57,809 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1913 GetRequests, 1905 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:32:57,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68082 states. [2018-11-07 09:32:58,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68082 to 66768. [2018-11-07 09:32:58,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66768 states. [2018-11-07 09:32:58,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66768 states to 66768 states and 77715 transitions. [2018-11-07 09:32:58,849 INFO L78 Accepts]: Start accepts. Automaton has 66768 states and 77715 transitions. Word has length 955 [2018-11-07 09:32:58,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:32:58,849 INFO L480 AbstractCegarLoop]: Abstraction has 66768 states and 77715 transitions. [2018-11-07 09:32:58,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:32:58,849 INFO L276 IsEmpty]: Start isEmpty. Operand 66768 states and 77715 transitions. [2018-11-07 09:32:58,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1033 [2018-11-07 09:32:58,931 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:32:58,932 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:32:58,932 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:32:58,933 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:32:58,933 INFO L82 PathProgramCache]: Analyzing trace with hash -825363577, now seen corresponding path program 1 times [2018-11-07 09:32:58,933 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:32:58,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:32:58,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:32:58,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:32:58,934 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:32:59,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:33:00,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1911 backedges. 620 proven. 259 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2018-11-07 09:33:00,343 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:33:00,343 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:33:00,344 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1033 with the following transitions: [2018-11-07 09:33:00,344 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [154], [158], [169], [173], [177], [181], [185], [189], [193], [204], [208], [212], [216], [227], [231], [235], [239], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [297], [301], [305], [309], [313], [317], [321], [325], [336], [340], [344], [348], [352], [363], [367], [371], [375], [379], [383], [387], [390], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [986], [988], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1385], [1389], [1393], [1397], [1401], [1404], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1585], [1588], [1592], [1593], [1597], [1600], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:33:00,353 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:33:00,353 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:33:01,252 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:33:01,252 INFO L272 AbstractInterpreter]: Visited 387 different actions 775 times. Merged at 10 different actions 18 times. Never widened. Found 6 fixpoints after 4 different actions. Largest state had 26 variables. [2018-11-07 09:33:01,256 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:33:01,256 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:33:01,256 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:33:01,256 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:33:01,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:33:01,269 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:33:01,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:33:01,570 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:33:02,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1911 backedges. 1432 proven. 2 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2018-11-07 09:33:02,766 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:33:04,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1911 backedges. 620 proven. 259 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2018-11-07 09:33:04,053 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:33:04,054 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2018-11-07 09:33:04,054 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:33:04,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:33:04,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:33:04,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:33:04,056 INFO L87 Difference]: Start difference. First operand 66768 states and 77715 transitions. Second operand 6 states. [2018-11-07 09:33:08,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:33:08,460 INFO L93 Difference]: Finished difference Result 136551 states and 159604 transitions. [2018-11-07 09:33:08,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 09:33:08,460 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1032 [2018-11-07 09:33:08,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:33:08,607 INFO L225 Difference]: With dead ends: 136551 [2018-11-07 09:33:08,608 INFO L226 Difference]: Without dead ends: 70660 [2018-11-07 09:33:08,687 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2079 GetRequests, 2066 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-11-07 09:33:08,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70660 states. [2018-11-07 09:33:09,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70660 to 64831. [2018-11-07 09:33:09,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64831 states. [2018-11-07 09:33:09,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64831 states to 64831 states and 74449 transitions. [2018-11-07 09:33:09,423 INFO L78 Accepts]: Start accepts. Automaton has 64831 states and 74449 transitions. Word has length 1032 [2018-11-07 09:33:09,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:33:09,424 INFO L480 AbstractCegarLoop]: Abstraction has 64831 states and 74449 transitions. [2018-11-07 09:33:09,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:33:09,424 INFO L276 IsEmpty]: Start isEmpty. Operand 64831 states and 74449 transitions. [2018-11-07 09:33:09,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1058 [2018-11-07 09:33:09,476 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:33:09,477 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:33:09,477 INFO L423 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:33:09,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:33:09,477 INFO L82 PathProgramCache]: Analyzing trace with hash 804768342, now seen corresponding path program 1 times [2018-11-07 09:33:09,477 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:33:09,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:33:09,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:33:09,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:33:09,478 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:33:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:33:10,577 WARN L179 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 12 [2018-11-07 09:33:11,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1934 backedges. 620 proven. 259 refuted. 0 times theorem prover too weak. 1055 trivial. 0 not checked. [2018-11-07 09:33:11,629 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:33:11,629 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:33:11,629 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1058 with the following transitions: [2018-11-07 09:33:11,630 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [154], [158], [169], [173], [177], [181], [185], [189], [193], [204], [208], [212], [216], [227], [231], [235], [239], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [297], [301], [305], [309], [313], [317], [321], [325], [336], [340], [344], [348], [352], [363], [367], [371], [375], [379], [383], [387], [390], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [986], [988], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1385], [1389], [1393], [1397], [1401], [1404], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1585], [1588], [1592], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1720], [1723], [1727], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:33:11,638 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:33:11,638 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:33:12,425 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:33:12,425 INFO L272 AbstractInterpreter]: Visited 389 different actions 777 times. Merged at 10 different actions 18 times. Never widened. Found 6 fixpoints after 4 different actions. Largest state had 26 variables. [2018-11-07 09:33:12,462 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:33:12,462 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:33:12,463 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:33:12,463 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:33:12,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:33:12,476 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:33:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:33:12,778 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:33:13,180 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-07 09:33:13,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1934 backedges. 1455 proven. 2 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2018-11-07 09:33:13,964 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:33:14,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1934 backedges. 620 proven. 259 refuted. 0 times theorem prover too weak. 1055 trivial. 0 not checked. [2018-11-07 09:33:14,810 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:33:14,811 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2018-11-07 09:33:14,811 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:33:14,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 09:33:14,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 09:33:14,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2018-11-07 09:33:14,814 INFO L87 Difference]: Start difference. First operand 64831 states and 74449 transitions. Second operand 8 states. [2018-11-07 09:33:22,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:33:22,999 INFO L93 Difference]: Finished difference Result 132573 states and 154314 transitions. [2018-11-07 09:33:22,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-07 09:33:23,000 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1057 [2018-11-07 09:33:23,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:33:23,137 INFO L225 Difference]: With dead ends: 132573 [2018-11-07 09:33:23,137 INFO L226 Difference]: Without dead ends: 68619 [2018-11-07 09:33:23,207 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2146 GetRequests, 2123 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2018-11-07 09:33:23,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68619 states. [2018-11-07 09:33:24,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68619 to 65255. [2018-11-07 09:33:24,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65255 states. [2018-11-07 09:33:24,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65255 states to 65255 states and 74756 transitions. [2018-11-07 09:33:24,096 INFO L78 Accepts]: Start accepts. Automaton has 65255 states and 74756 transitions. Word has length 1057 [2018-11-07 09:33:24,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:33:24,097 INFO L480 AbstractCegarLoop]: Abstraction has 65255 states and 74756 transitions. [2018-11-07 09:33:24,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 09:33:24,097 INFO L276 IsEmpty]: Start isEmpty. Operand 65255 states and 74756 transitions. [2018-11-07 09:33:24,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1083 [2018-11-07 09:33:24,163 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:33:24,164 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 09:33:24,164 INFO L423 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:33:24,164 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:33:24,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1945468520, now seen corresponding path program 1 times [2018-11-07 09:33:24,165 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:33:24,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:33:24,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:33:24,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:33:24,166 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:33:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:33:26,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1481 backedges. 567 proven. 298 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2018-11-07 09:33:26,025 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:33:26,025 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:33:26,025 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1083 with the following transitions: [2018-11-07 09:33:26,026 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [21], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [154], [158], [169], [173], [177], [181], [185], [189], [193], [204], [208], [212], [216], [227], [231], [235], [239], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [297], [301], [305], [309], [313], [317], [321], [325], [336], [340], [344], [348], [352], [363], [367], [371], [375], [379], [383], [387], [391], [395], [399], [403], [407], [411], [415], [426], [430], [434], [445], [449], [453], [464], [467], [472], [474], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [986], [988], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1600], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:33:26,031 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:33:26,031 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:33:26,857 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:33:26,857 INFO L272 AbstractInterpreter]: Visited 400 different actions 807 times. Merged at 12 different actions 24 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-07 09:33:26,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:33:26,869 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:33:26,869 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:33:26,869 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:33:26,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:33:26,879 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:33:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:33:27,167 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:33:29,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1481 backedges. 1158 proven. 2 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-11-07 09:33:29,691 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:33:31,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1481 backedges. 567 proven. 298 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2018-11-07 09:33:31,960 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:33:31,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-11-07 09:33:31,960 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:33:31,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 09:33:31,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 09:33:31,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:33:31,962 INFO L87 Difference]: Start difference. First operand 65255 states and 74756 transitions. Second operand 7 states. [2018-11-07 09:33:38,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:33:38,454 INFO L93 Difference]: Finished difference Result 130103 states and 149203 transitions. [2018-11-07 09:33:38,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 09:33:38,454 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1082 [2018-11-07 09:33:38,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:33:38,587 INFO L225 Difference]: With dead ends: 130103 [2018-11-07 09:33:38,587 INFO L226 Difference]: Without dead ends: 65725 [2018-11-07 09:33:38,628 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2180 GetRequests, 2164 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-11-07 09:33:38,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65725 states. [2018-11-07 09:33:39,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65725 to 65704. [2018-11-07 09:33:39,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65704 states. [2018-11-07 09:33:39,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65704 states to 65704 states and 74991 transitions. [2018-11-07 09:33:39,338 INFO L78 Accepts]: Start accepts. Automaton has 65704 states and 74991 transitions. Word has length 1082 [2018-11-07 09:33:39,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:33:39,338 INFO L480 AbstractCegarLoop]: Abstraction has 65704 states and 74991 transitions. [2018-11-07 09:33:39,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 09:33:39,338 INFO L276 IsEmpty]: Start isEmpty. Operand 65704 states and 74991 transitions. [2018-11-07 09:33:39,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1271 [2018-11-07 09:33:39,429 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:33:39,430 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 09:33:39,430 INFO L423 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:33:39,431 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:33:39,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1123781613, now seen corresponding path program 1 times [2018-11-07 09:33:39,431 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:33:39,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:33:39,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:33:39,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:33:39,432 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:33:39,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:33:41,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2040 backedges. 275 proven. 1385 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-11-07 09:33:41,399 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:33:41,399 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:33:41,399 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1271 with the following transitions: [2018-11-07 09:33:41,399 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [154], [158], [169], [173], [177], [181], [185], [189], [193], [204], [208], [212], [216], [227], [231], [235], [239], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [297], [301], [305], [309], [313], [317], [321], [325], [336], [340], [344], [348], [352], [363], [367], [371], [375], [379], [383], [387], [390], [391], [395], [399], [403], [407], [411], [415], [426], [430], [434], [445], [449], [453], [464], [475], [479], [483], [487], [491], [495], [499], [503], [507], [511], [515], [519], [530], [534], [538], [549], [553], [557], [561], [565], [569], [573], [584], [587], [592], [594], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [986], [988], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1278], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1404], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1585], [1588], [1592], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:33:41,405 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:33:41,405 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:33:42,224 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:33:42,224 INFO L272 AbstractInterpreter]: Visited 426 different actions 855 times. Merged at 13 different actions 22 times. Never widened. Found 6 fixpoints after 4 different actions. Largest state had 26 variables. [2018-11-07 09:33:42,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:33:42,232 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:33:42,232 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:33:42,232 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:33:42,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:33:42,240 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:33:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:33:42,586 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:33:44,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2040 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 1782 trivial. 0 not checked. [2018-11-07 09:33:44,454 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:33:45,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2040 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 1782 trivial. 0 not checked. [2018-11-07 09:33:45,337 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:33:45,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [12] total 14 [2018-11-07 09:33:45,338 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:33:45,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:33:45,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:33:45,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2018-11-07 09:33:45,339 INFO L87 Difference]: Start difference. First operand 65704 states and 74991 transitions. Second operand 3 states. [2018-11-07 09:33:52,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:33:52,140 INFO L93 Difference]: Finished difference Result 135712 states and 155288 transitions. [2018-11-07 09:33:52,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:33:52,140 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1270 [2018-11-07 09:33:52,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:33:52,268 INFO L225 Difference]: With dead ends: 135712 [2018-11-07 09:33:52,268 INFO L226 Difference]: Without dead ends: 70062 [2018-11-07 09:33:52,330 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2558 GetRequests, 2544 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2018-11-07 09:33:52,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70062 states. Received shutdown request... [2018-11-07 09:33:52,874 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 09:33:52,878 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 09:33:52,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:33:52 BoogieIcfgContainer [2018-11-07 09:33:52,878 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 09:33:52,879 INFO L168 Benchmark]: Toolchain (without parser) took 205632.47 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 3.9 GB in the end (delta: -2.5 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-11-07 09:33:52,880 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 09:33:52,880 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1685.22 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-11-07 09:33:52,881 INFO L168 Benchmark]: Boogie Procedure Inliner took 274.65 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -950.7 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. [2018-11-07 09:33:52,882 INFO L168 Benchmark]: Boogie Preprocessor took 231.67 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2018-11-07 09:33:52,882 INFO L168 Benchmark]: RCFGBuilder took 8282.26 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 454.3 MB). Peak memory consumption was 454.3 MB. Max. memory is 7.1 GB. [2018-11-07 09:33:52,883 INFO L168 Benchmark]: TraceAbstraction took 195153.35 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.4 GB). Free memory was 1.8 GB in the beginning and 3.9 GB in the end (delta: -2.1 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-07 09:33:52,888 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1685.22 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 274.65 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -950.7 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 231.67 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8282.26 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 454.3 MB). Peak memory consumption was 454.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 195153.35 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.4 GB). Free memory was 1.8 GB in the beginning and 3.9 GB in the end (delta: -2.1 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 128]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 128). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 195.0s OverallTime, 18 OverallIterations, 7 TraceHistogramMax, 126.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5941 SDtfs, 30744 SDslu, 4241 SDs, 0 SdLazy, 59869 SolverSat, 10116 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 97.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17958 GetRequests, 17758 SyntacticMatches, 33 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 8.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71671occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.9s AbstIntTime, 13 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 13.3s AutomataMinimizationTime, 18 MinimizatonAttempts, 38972 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.7s SsaConstructionTime, 3.2s SatisfiabilityAnalysisTime, 32.7s InterpolantComputationTime, 18983 NumberOfCodeBlocks, 18983 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 27802 ConstructedInterpolants, 139 QuantifiedInterpolants, 51735831 SizeOfPredicates, 26 NumberOfNonLiveVariables, 12663 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 44 InterpolantComputations, 11 PerfectInterpolantSequences, 34786/38509 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown