java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label07_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 08:02:49,222 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 08:02:49,225 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 08:02:49,240 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 08:02:49,241 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 08:02:49,242 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 08:02:49,243 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 08:02:49,245 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 08:02:49,246 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 08:02:49,247 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 08:02:49,248 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 08:02:49,248 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 08:02:49,249 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 08:02:49,250 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 08:02:49,251 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 08:02:49,252 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 08:02:49,253 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 08:02:49,255 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 08:02:49,257 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 08:02:49,258 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 08:02:49,259 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 08:02:49,265 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 08:02:49,267 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 08:02:49,271 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 08:02:49,271 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 08:02:49,272 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 08:02:49,273 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 08:02:49,274 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 08:02:49,277 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 08:02:49,278 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 08:02:49,279 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 08:02:49,281 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 08:02:49,281 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 08:02:49,281 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 08:02:49,282 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 08:02:49,283 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 08:02:49,283 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 08:02:49,314 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 08:02:49,314 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 08:02:49,316 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 08:02:49,316 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 08:02:49,316 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 08:02:49,316 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 08:02:49,316 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 08:02:49,317 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 08:02:49,317 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 08:02:49,317 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 08:02:49,317 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 08:02:49,317 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 08:02:49,318 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 08:02:49,318 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 08:02:49,319 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 08:02:49,319 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 08:02:49,319 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 08:02:49,319 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 08:02:49,320 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 08:02:49,321 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 08:02:49,322 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 08:02:49,322 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 08:02:49,322 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 08:02:49,322 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 08:02:49,323 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 08:02:49,323 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 08:02:49,323 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:02:49,323 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 08:02:49,323 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 08:02:49,324 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 08:02:49,324 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 08:02:49,324 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 08:02:49,324 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 08:02:49,324 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 08:02:49,325 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 08:02:49,325 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 08:02:49,367 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 08:02:49,381 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 08:02:49,384 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 08:02:49,386 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 08:02:49,386 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 08:02:49,387 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label07_true-unreach-call_false-termination.c [2018-10-27 08:02:49,439 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8bfd49bf3/4c6d91121c1d4cba902d32f05a3b6be2/FLAG052574fbf [2018-10-27 08:02:50,049 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 08:02:50,050 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label07_true-unreach-call_false-termination.c [2018-10-27 08:02:50,074 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8bfd49bf3/4c6d91121c1d4cba902d32f05a3b6be2/FLAG052574fbf [2018-10-27 08:02:50,095 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8bfd49bf3/4c6d91121c1d4cba902d32f05a3b6be2 [2018-10-27 08:02:50,108 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 08:02:50,110 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 08:02:50,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 08:02:50,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 08:02:50,118 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 08:02:50,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:02:50" (1/1) ... [2018-10-27 08:02:50,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@588b6527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:50, skipping insertion in model container [2018-10-27 08:02:50,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:02:50" (1/1) ... [2018-10-27 08:02:50,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 08:02:50,224 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 08:02:50,780 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:02:50,785 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 08:02:50,906 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:02:50,924 INFO L193 MainTranslator]: Completed translation [2018-10-27 08:02:50,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:50 WrapperNode [2018-10-27 08:02:50,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 08:02:50,926 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 08:02:50,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 08:02:50,926 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 08:02:50,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:50" (1/1) ... [2018-10-27 08:02:50,961 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:50" (1/1) ... [2018-10-27 08:02:51,166 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 08:02:51,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 08:02:51,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 08:02:51,168 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 08:02:51,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:50" (1/1) ... [2018-10-27 08:02:51,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:50" (1/1) ... [2018-10-27 08:02:51,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:50" (1/1) ... [2018-10-27 08:02:51,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:50" (1/1) ... [2018-10-27 08:02:51,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:50" (1/1) ... [2018-10-27 08:02:51,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:50" (1/1) ... [2018-10-27 08:02:51,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:50" (1/1) ... [2018-10-27 08:02:51,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 08:02:51,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 08:02:51,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 08:02:51,294 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 08:02:51,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:02:51,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 08:02:51,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 08:02:51,378 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 08:02:51,378 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 08:02:51,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 08:02:51,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 08:02:51,379 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 08:02:51,379 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 08:02:54,807 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 08:02:54,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:02:54 BoogieIcfgContainer [2018-10-27 08:02:54,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 08:02:54,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 08:02:54,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 08:02:54,819 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 08:02:54,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:02:50" (1/3) ... [2018-10-27 08:02:54,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e89724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:02:54, skipping insertion in model container [2018-10-27 08:02:54,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:50" (2/3) ... [2018-10-27 08:02:54,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e89724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:02:54, skipping insertion in model container [2018-10-27 08:02:54,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:02:54" (3/3) ... [2018-10-27 08:02:54,825 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label07_true-unreach-call_false-termination.c [2018-10-27 08:02:54,834 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 08:02:54,844 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 08:02:54,862 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 08:02:54,902 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 08:02:54,903 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 08:02:54,903 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 08:02:54,903 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 08:02:54,903 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 08:02:54,903 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 08:02:54,904 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 08:02:54,904 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 08:02:54,932 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-27 08:02:54,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-27 08:02:54,942 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:02:54,943 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:02:54,946 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:02:54,952 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:02:54,952 INFO L82 PathProgramCache]: Analyzing trace with hash -989245532, now seen corresponding path program 1 times [2018-10-27 08:02:54,954 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:02:55,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:02:55,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:02:55,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:02:55,012 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:02:55,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:02:55,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:02:55,487 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:02:55,487 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:02:55,487 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:02:55,495 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:02:55,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:02:55,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:02:55,517 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-10-27 08:02:58,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:02:58,560 INFO L93 Difference]: Finished difference Result 894 states and 1610 transitions. [2018-10-27 08:02:58,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:02:58,564 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2018-10-27 08:02:58,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:02:58,586 INFO L225 Difference]: With dead ends: 894 [2018-10-27 08:02:58,587 INFO L226 Difference]: Without dead ends: 633 [2018-10-27 08:02:58,597 INFO L605 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 [2018-10-27 08:02:58,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-10-27 08:02:58,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 434. [2018-10-27 08:02:58,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-27 08:02:58,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 662 transitions. [2018-10-27 08:02:58,688 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 662 transitions. Word has length 54 [2018-10-27 08:02:58,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:02:58,689 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 662 transitions. [2018-10-27 08:02:58,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:02:58,690 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 662 transitions. [2018-10-27 08:02:58,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-27 08:02:58,702 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:02:58,702 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:02:58,703 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:02:58,703 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:02:58,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1614354860, now seen corresponding path program 1 times [2018-10-27 08:02:58,703 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:02:58,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:02:58,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:02:58,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:02:58,709 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:02:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:02:59,035 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:02:59,037 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:02:59,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:02:59,038 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:02:59,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:02:59,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:02:59,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:02:59,041 INFO L87 Difference]: Start difference. First operand 434 states and 662 transitions. Second operand 4 states. [2018-10-27 08:03:01,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:03:01,875 INFO L93 Difference]: Finished difference Result 1594 states and 2533 transitions. [2018-10-27 08:03:01,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:03:01,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2018-10-27 08:03:01,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:03:01,887 INFO L225 Difference]: With dead ends: 1594 [2018-10-27 08:03:01,887 INFO L226 Difference]: Without dead ends: 780 [2018-10-27 08:03:01,894 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:03:01,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2018-10-27 08:03:01,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 780. [2018-10-27 08:03:01,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 780 states. [2018-10-27 08:03:01,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1152 transitions. [2018-10-27 08:03:01,964 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1152 transitions. Word has length 138 [2018-10-27 08:03:01,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:03:01,965 INFO L481 AbstractCegarLoop]: Abstraction has 780 states and 1152 transitions. [2018-10-27 08:03:01,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:03:01,965 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1152 transitions. [2018-10-27 08:03:01,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-27 08:03:01,979 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:03:01,979 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:03:01,980 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:03:01,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:03:01,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1391925776, now seen corresponding path program 1 times [2018-10-27 08:03:01,980 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:03:01,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:03:01,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:03:01,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:03:01,982 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:03:02,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:03:02,353 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-10-27 08:03:02,354 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:03:02,354 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:03:02,354 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:03:02,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:03:02,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:03:02,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:03:02,360 INFO L87 Difference]: Start difference. First operand 780 states and 1152 transitions. Second operand 4 states. [2018-10-27 08:03:07,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:03:07,640 INFO L93 Difference]: Finished difference Result 3018 states and 4610 transitions. [2018-10-27 08:03:07,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:03:07,642 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 224 [2018-10-27 08:03:07,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:03:07,665 INFO L225 Difference]: With dead ends: 3018 [2018-10-27 08:03:07,665 INFO L226 Difference]: Without dead ends: 2244 [2018-10-27 08:03:07,677 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:03:07,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2244 states. [2018-10-27 08:03:07,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2244 to 2244. [2018-10-27 08:03:07,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2244 states. [2018-10-27 08:03:07,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2244 states to 2244 states and 3149 transitions. [2018-10-27 08:03:07,756 INFO L78 Accepts]: Start accepts. Automaton has 2244 states and 3149 transitions. Word has length 224 [2018-10-27 08:03:07,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:03:07,757 INFO L481 AbstractCegarLoop]: Abstraction has 2244 states and 3149 transitions. [2018-10-27 08:03:07,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:03:07,758 INFO L276 IsEmpty]: Start isEmpty. Operand 2244 states and 3149 transitions. [2018-10-27 08:03:07,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2018-10-27 08:03:07,773 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:03:07,774 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:03:07,774 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:03:07,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:03:07,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1136291269, now seen corresponding path program 1 times [2018-10-27 08:03:07,775 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:03:07,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:03:07,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:03:07,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:03:07,777 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:03:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:03:08,369 WARN L179 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-10-27 08:03:08,828 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 94 proven. 108 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 08:03:08,828 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:03:08,829 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:03:08,830 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 320 with the following transitions: [2018-10-27 08:03:08,832 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [822], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 08:03:08,889 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:03:08,889 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:03:13,369 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:03:13,372 INFO L272 AbstractInterpreter]: Visited 157 different actions 157 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 08:03:13,418 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:03:13,418 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:03:16,255 INFO L227 lantSequenceWeakener]: Weakened 310 states. On average, predicates are now at 77.83% of their original sizes. [2018-10-27 08:03:16,255 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:03:16,520 INFO L415 sIntCurrentIteration]: We unified 318 AI predicates to 318 [2018-10-27 08:03:16,520 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:03:16,521 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:03:16,521 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2018-10-27 08:03:16,522 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:03:16,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:03:16,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:03:16,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:03:16,523 INFO L87 Difference]: Start difference. First operand 2244 states and 3149 transitions. Second operand 6 states. [2018-10-27 08:03:27,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:03:27,631 INFO L93 Difference]: Finished difference Result 4667 states and 6526 transitions. [2018-10-27 08:03:27,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 08:03:27,631 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 319 [2018-10-27 08:03:27,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:03:27,651 INFO L225 Difference]: With dead ends: 4667 [2018-10-27 08:03:27,652 INFO L226 Difference]: Without dead ends: 2429 [2018-10-27 08:03:27,666 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 319 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 08:03:27,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2018-10-27 08:03:27,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 2427. [2018-10-27 08:03:27,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2427 states. [2018-10-27 08:03:27,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 3340 transitions. [2018-10-27 08:03:27,750 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 3340 transitions. Word has length 319 [2018-10-27 08:03:27,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:03:27,751 INFO L481 AbstractCegarLoop]: Abstraction has 2427 states and 3340 transitions. [2018-10-27 08:03:27,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:03:27,751 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 3340 transitions. [2018-10-27 08:03:27,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-10-27 08:03:27,771 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:03:27,772 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, 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, 2, 2, 2, 2, 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] [2018-10-27 08:03:27,772 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:03:27,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:03:27,773 INFO L82 PathProgramCache]: Analyzing trace with hash 2012329804, now seen corresponding path program 1 times [2018-10-27 08:03:27,773 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:03:27,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:03:27,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:03:27,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:03:27,774 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:03:27,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:03:28,648 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 229 proven. 190 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 08:03:28,649 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:03:28,649 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:03:28,650 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 405 with the following transitions: [2018-10-27 08:03:28,650 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [822], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 08:03:28,657 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:03:28,657 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:03:33,206 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:03:33,207 INFO L272 AbstractInterpreter]: Visited 161 different actions 315 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 08:03:33,221 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:03:33,221 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:03:35,498 INFO L227 lantSequenceWeakener]: Weakened 401 states. On average, predicates are now at 77.77% of their original sizes. [2018-10-27 08:03:35,499 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:03:35,946 INFO L415 sIntCurrentIteration]: We unified 403 AI predicates to 403 [2018-10-27 08:03:35,947 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:03:35,947 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:03:35,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2018-10-27 08:03:35,948 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:03:35,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 08:03:35,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 08:03:35,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:03:35,950 INFO L87 Difference]: Start difference. First operand 2427 states and 3340 transitions. Second operand 10 states. [2018-10-27 08:04:35,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:04:35,141 INFO L93 Difference]: Finished difference Result 5408 states and 7353 transitions. [2018-10-27 08:04:35,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-27 08:04:35,141 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 404 [2018-10-27 08:04:35,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:04:35,157 INFO L225 Difference]: With dead ends: 5408 [2018-10-27 08:04:35,157 INFO L226 Difference]: Without dead ends: 2800 [2018-10-27 08:04:35,171 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 412 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-10-27 08:04:35,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2800 states. [2018-10-27 08:04:35,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2800 to 2798. [2018-10-27 08:04:35,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2798 states. [2018-10-27 08:04:35,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 3744 transitions. [2018-10-27 08:04:35,242 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 3744 transitions. Word has length 404 [2018-10-27 08:04:35,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:04:35,242 INFO L481 AbstractCegarLoop]: Abstraction has 2798 states and 3744 transitions. [2018-10-27 08:04:35,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 08:04:35,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 3744 transitions. [2018-10-27 08:04:35,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2018-10-27 08:04:35,264 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:04:35,264 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-27 08:04:35,264 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:04:35,265 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:04:35,265 INFO L82 PathProgramCache]: Analyzing trace with hash -356180380, now seen corresponding path program 1 times [2018-10-27 08:04:35,265 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:04:35,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:04:35,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:04:35,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:04:35,266 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:04:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:04:35,939 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-27 08:04:36,722 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 386 proven. 250 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-10-27 08:04:36,722 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:04:36,723 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:04:36,723 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 505 with the following transitions: [2018-10-27 08:04:36,723 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [822], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 08:04:36,729 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:04:36,729 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:04:40,573 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:04:40,573 INFO L272 AbstractInterpreter]: Visited 162 different actions 318 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 08:04:40,578 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:04:40,578 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:04:42,828 INFO L227 lantSequenceWeakener]: Weakened 501 states. On average, predicates are now at 77.7% of their original sizes. [2018-10-27 08:04:42,829 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:04:42,917 INFO L415 sIntCurrentIteration]: We unified 503 AI predicates to 503 [2018-10-27 08:04:42,918 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:04:42,918 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:04:42,918 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2018-10-27 08:04:42,918 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:04:42,919 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 08:04:42,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 08:04:42,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:04:42,920 INFO L87 Difference]: Start difference. First operand 2798 states and 3744 transitions. Second operand 10 states. [2018-10-27 08:05:06,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:05:06,633 INFO L93 Difference]: Finished difference Result 5224 states and 7100 transitions. [2018-10-27 08:05:06,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 08:05:06,634 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 504 [2018-10-27 08:05:06,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:05:06,648 INFO L225 Difference]: With dead ends: 5224 [2018-10-27 08:05:06,648 INFO L226 Difference]: Without dead ends: 2615 [2018-10-27 08:05:06,662 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 511 GetRequests, 495 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2018-10-27 08:05:06,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2615 states. [2018-10-27 08:05:06,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2615 to 2612. [2018-10-27 08:05:06,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2612 states. [2018-10-27 08:05:06,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2612 states to 2612 states and 3522 transitions. [2018-10-27 08:05:06,732 INFO L78 Accepts]: Start accepts. Automaton has 2612 states and 3522 transitions. Word has length 504 [2018-10-27 08:05:06,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:05:06,733 INFO L481 AbstractCegarLoop]: Abstraction has 2612 states and 3522 transitions. [2018-10-27 08:05:06,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 08:05:06,733 INFO L276 IsEmpty]: Start isEmpty. Operand 2612 states and 3522 transitions. [2018-10-27 08:05:06,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2018-10-27 08:05:06,757 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:05:06,757 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, 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, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:05:06,757 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:05:06,758 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:05:06,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1011924707, now seen corresponding path program 1 times [2018-10-27 08:05:06,758 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:05:06,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:05:06,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:05:06,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:05:06,759 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:05:06,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:05:07,219 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 336 proven. 285 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-10-27 08:05:07,220 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:05:07,220 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:05:07,220 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 508 with the following transitions: [2018-10-27 08:05:07,221 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [822], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 08:05:07,227 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:05:07,227 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:05:11,881 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:05:11,881 INFO L272 AbstractInterpreter]: Visited 162 different actions 485 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-10-27 08:05:11,890 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:05:11,890 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:05:12,868 INFO L227 lantSequenceWeakener]: Weakened 504 states. On average, predicates are now at 80.39% of their original sizes. [2018-10-27 08:05:12,869 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:05:12,950 INFO L415 sIntCurrentIteration]: We unified 506 AI predicates to 506 [2018-10-27 08:05:12,951 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:05:12,951 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:05:12,951 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2018-10-27 08:05:12,951 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:05:12,952 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:05:12,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:05:12,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:05:12,952 INFO L87 Difference]: Start difference. First operand 2612 states and 3522 transitions. Second operand 9 states. [2018-10-27 08:05:37,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:05:37,109 INFO L93 Difference]: Finished difference Result 5943 states and 8291 transitions. [2018-10-27 08:05:37,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-27 08:05:37,109 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 507 [2018-10-27 08:05:37,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:05:37,127 INFO L225 Difference]: With dead ends: 5943 [2018-10-27 08:05:37,127 INFO L226 Difference]: Without dead ends: 3705 [2018-10-27 08:05:37,143 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 513 GetRequests, 499 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-10-27 08:05:37,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3705 states. [2018-10-27 08:05:37,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3705 to 3684. [2018-10-27 08:05:37,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3684 states. [2018-10-27 08:05:37,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3684 states to 3684 states and 4834 transitions. [2018-10-27 08:05:37,341 INFO L78 Accepts]: Start accepts. Automaton has 3684 states and 4834 transitions. Word has length 507 [2018-10-27 08:05:37,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:05:37,342 INFO L481 AbstractCegarLoop]: Abstraction has 3684 states and 4834 transitions. [2018-10-27 08:05:37,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:05:37,342 INFO L276 IsEmpty]: Start isEmpty. Operand 3684 states and 4834 transitions. [2018-10-27 08:05:37,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2018-10-27 08:05:37,371 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:05:37,372 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, 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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:05:37,372 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:05:37,372 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:05:37,373 INFO L82 PathProgramCache]: Analyzing trace with hash 767629283, now seen corresponding path program 1 times [2018-10-27 08:05:37,373 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:05:37,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:05:37,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:05:37,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:05:37,374 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:05:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:05:38,116 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-27 08:05:38,314 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-27 08:05:38,606 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-27 08:05:39,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1192 backedges. 554 proven. 458 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-10-27 08:05:39,415 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:05:39,415 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:05:39,415 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 614 with the following transitions: [2018-10-27 08:05:39,416 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [822], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 08:05:39,420 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:05:39,420 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:05:49,182 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:05:49,183 INFO L272 AbstractInterpreter]: Visited 164 different actions 650 times. Merged at 8 different actions 30 times. Never widened. Found 8 fixpoints after 5 different actions. Largest state had 24 variables. [2018-10-27 08:05:49,189 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:05:49,190 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:05:49,190 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:05:49,190 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 08:05:49,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:05:49,203 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:05:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:05:49,401 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:05:50,012 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-27 08:05:50,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1192 backedges. 892 proven. 2 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2018-10-27 08:05:50,594 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:05:51,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1192 backedges. 548 proven. 112 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2018-10-27 08:05:51,592 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:05:51,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-10-27 08:05:51,592 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:05:51,594 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-27 08:05:51,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-27 08:05:51,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-10-27 08:05:51,595 INFO L87 Difference]: Start difference. First operand 3684 states and 4834 transitions. Second operand 17 states. [2018-10-27 08:05:53,477 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2018-10-27 08:06:01,754 WARN L179 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 28 [2018-10-27 08:06:01,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:06:01,887 INFO L93 Difference]: Finished difference Result 8467 states and 11545 transitions. [2018-10-27 08:06:01,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-27 08:06:01,888 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 613 [2018-10-27 08:06:01,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:06:01,920 INFO L225 Difference]: With dead ends: 8467 [2018-10-27 08:06:01,920 INFO L226 Difference]: Without dead ends: 3994 [2018-10-27 08:06:01,968 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1284 GetRequests, 1237 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=521, Invalid=1735, Unknown=0, NotChecked=0, Total=2256 [2018-10-27 08:06:01,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3994 states. [2018-10-27 08:06:02,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3994 to 3527. [2018-10-27 08:06:02,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3527 states. [2018-10-27 08:06:02,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3527 states to 3527 states and 4081 transitions. [2018-10-27 08:06:02,097 INFO L78 Accepts]: Start accepts. Automaton has 3527 states and 4081 transitions. Word has length 613 [2018-10-27 08:06:02,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:06:02,098 INFO L481 AbstractCegarLoop]: Abstraction has 3527 states and 4081 transitions. [2018-10-27 08:06:02,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-27 08:06:02,099 INFO L276 IsEmpty]: Start isEmpty. Operand 3527 states and 4081 transitions. [2018-10-27 08:06:02,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2018-10-27 08:06:02,118 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:06:02,119 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 08:06:02,119 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:06:02,120 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:06:02,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1652295509, now seen corresponding path program 1 times [2018-10-27 08:06:02,120 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:06:02,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:06:02,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:06:02,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:06:02,121 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:06:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:06:03,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1259 backedges. 479 proven. 513 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2018-10-27 08:06:03,997 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:06:03,997 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:06:03,998 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 688 with the following transitions: [2018-10-27 08:06:03,998 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [822], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 08:06:04,002 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:06:04,002 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:06:09,735 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:06:09,735 INFO L272 AbstractInterpreter]: Visited 192 different actions 767 times. Merged at 10 different actions 35 times. Widened at 1 different actions 1 times. Found 8 fixpoints after 4 different actions. Largest state had 24 variables. [2018-10-27 08:06:09,745 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:06:09,745 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:06:09,745 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:06:09,745 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 08:06:09,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:06:09,753 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:06:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:06:09,929 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:06:10,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1259 backedges. 974 proven. 2 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2018-10-27 08:06:10,675 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:06:11,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1259 backedges. 477 proven. 228 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2018-10-27 08:06:11,369 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:06:11,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 20 [2018-10-27 08:06:11,369 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:06:11,372 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-27 08:06:11,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-27 08:06:11,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2018-10-27 08:06:11,373 INFO L87 Difference]: Start difference. First operand 3527 states and 4081 transitions. Second operand 17 states. [2018-10-27 08:06:14,155 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 38 [2018-10-27 08:06:16,767 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2018-10-27 08:06:17,439 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2018-10-27 08:06:18,061 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2018-10-27 08:06:22,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:06:22,803 INFO L93 Difference]: Finished difference Result 10146 states and 12667 transitions. [2018-10-27 08:06:22,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-27 08:06:22,804 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 687 [2018-10-27 08:06:22,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:06:22,848 INFO L225 Difference]: With dead ends: 10146 [2018-10-27 08:06:22,849 INFO L226 Difference]: Without dead ends: 6993 [2018-10-27 08:06:22,870 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1470 GetRequests, 1406 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1203 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=883, Invalid=3407, Unknown=0, NotChecked=0, Total=4290 [2018-10-27 08:06:22,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6993 states. [2018-10-27 08:06:23,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6993 to 6862. [2018-10-27 08:06:23,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6862 states. [2018-10-27 08:06:23,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6862 states to 6862 states and 7965 transitions. [2018-10-27 08:06:23,072 INFO L78 Accepts]: Start accepts. Automaton has 6862 states and 7965 transitions. Word has length 687 [2018-10-27 08:06:23,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:06:23,073 INFO L481 AbstractCegarLoop]: Abstraction has 6862 states and 7965 transitions. [2018-10-27 08:06:23,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-27 08:06:23,074 INFO L276 IsEmpty]: Start isEmpty. Operand 6862 states and 7965 transitions. [2018-10-27 08:06:23,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 806 [2018-10-27 08:06:23,108 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:06:23,109 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:06:23,109 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:06:23,110 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:06:23,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1733960817, now seen corresponding path program 1 times [2018-10-27 08:06:23,110 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:06:23,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:06:23,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:06:23,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:06:23,112 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:06:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:06:24,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1843 backedges. 655 proven. 228 refuted. 0 times theorem prover too weak. 960 trivial. 0 not checked. [2018-10-27 08:06:24,168 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:06:24,168 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:06:24,168 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 806 with the following transitions: [2018-10-27 08:06:24,168 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [822], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 08:06:24,172 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:06:24,172 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:06:29,685 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:06:29,685 INFO L272 AbstractInterpreter]: Visited 193 different actions 774 times. Merged at 10 different actions 38 times. Widened at 1 different actions 1 times. Found 10 fixpoints after 5 different actions. Largest state had 24 variables. [2018-10-27 08:06:29,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:06:29,691 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:06:29,691 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:06:29,691 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 08:06:29,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:06:29,704 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:06:29,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:06:29,913 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:06:30,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1843 backedges. 1340 proven. 2 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2018-10-27 08:06:30,607 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:06:31,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1843 backedges. 655 proven. 228 refuted. 0 times theorem prover too weak. 960 trivial. 0 not checked. [2018-10-27 08:06:31,453 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:06:31,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-10-27 08:06:31,454 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:06:31,455 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 08:06:31,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 08:06:31,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:06:31,456 INFO L87 Difference]: Start difference. First operand 6862 states and 7965 transitions. Second operand 7 states. [2018-10-27 08:06:34,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:06:34,537 INFO L93 Difference]: Finished difference Result 18283 states and 25738 transitions. [2018-10-27 08:06:34,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-27 08:06:34,537 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 805 [2018-10-27 08:06:34,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:06:34,613 INFO L225 Difference]: With dead ends: 18283 [2018-10-27 08:06:34,614 INFO L226 Difference]: Without dead ends: 11795 [2018-10-27 08:06:34,661 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1626 GetRequests, 1612 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2018-10-27 08:06:34,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11795 states. [2018-10-27 08:06:34,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11795 to 11541. [2018-10-27 08:06:34,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11541 states. [2018-10-27 08:06:35,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11541 states to 11541 states and 13898 transitions. [2018-10-27 08:06:35,004 INFO L78 Accepts]: Start accepts. Automaton has 11541 states and 13898 transitions. Word has length 805 [2018-10-27 08:06:35,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:06:35,005 INFO L481 AbstractCegarLoop]: Abstraction has 11541 states and 13898 transitions. [2018-10-27 08:06:35,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 08:06:35,005 INFO L276 IsEmpty]: Start isEmpty. Operand 11541 states and 13898 transitions. [2018-10-27 08:06:35,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 933 [2018-10-27 08:06:35,046 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:06:35,047 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:06:35,047 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:06:35,047 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:06:35,048 INFO L82 PathProgramCache]: Analyzing trace with hash 996830508, now seen corresponding path program 1 times [2018-10-27 08:06:35,048 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:06:35,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:06:35,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:06:35,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:06:35,049 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:06:35,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:06:35,740 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-27 08:06:35,923 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-27 08:06:36,130 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 08:06:37,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 716 proven. 1124 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2018-10-27 08:06:37,810 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:06:37,810 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:06:37,810 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 933 with the following transitions: [2018-10-27 08:06:37,810 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [822], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 08:06:37,813 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:06:37,813 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:06:43,169 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:06:43,169 INFO L272 AbstractInterpreter]: Visited 193 different actions 774 times. Merged at 10 different actions 38 times. Widened at 1 different actions 1 times. Found 10 fixpoints after 5 different actions. Largest state had 24 variables. [2018-10-27 08:06:43,177 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:06:43,177 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:06:43,177 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:06:43,177 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 08:06:43,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:06:43,185 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:06:43,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:06:43,409 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:06:44,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 1724 proven. 2 refuted. 0 times theorem prover too weak. 830 trivial. 0 not checked. [2018-10-27 08:06:44,360 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:06:44,638 WARN L179 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 17 [2018-10-27 08:06:45,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 842 proven. 228 refuted. 0 times theorem prover too weak. 1486 trivial. 0 not checked. [2018-10-27 08:06:45,337 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:06:45,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 6] total 20 [2018-10-27 08:06:45,337 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:06:45,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-27 08:06:45,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-27 08:06:45,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2018-10-27 08:06:45,339 INFO L87 Difference]: Start difference. First operand 11541 states and 13898 transitions. Second operand 18 states. [2018-10-27 08:06:46,049 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 29 Received shutdown request... [2018-10-27 08:06:46,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 08:06:46,682 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 08:06:46,689 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 08:06:46,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:06:46 BoogieIcfgContainer [2018-10-27 08:06:46,689 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 08:06:46,690 INFO L168 Benchmark]: Toolchain (without parser) took 236580.57 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 41.3 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-27 08:06:46,691 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 08:06:46,691 INFO L168 Benchmark]: CACSL2BoogieTranslator took 813.76 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-27 08:06:46,692 INFO L168 Benchmark]: Boogie Procedure Inliner took 240.63 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 712.0 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -799.3 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2018-10-27 08:06:46,693 INFO L168 Benchmark]: Boogie Preprocessor took 125.94 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-10-27 08:06:46,694 INFO L168 Benchmark]: RCFGBuilder took 3514.27 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 136.9 MB). Peak memory consumption was 136.9 MB. Max. memory is 7.1 GB. [2018-10-27 08:06:46,695 INFO L168 Benchmark]: TraceAbstraction took 231878.99 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 1.4 GB in the end (delta: 647.5 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-27 08:06:46,701 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 813.76 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 240.63 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 712.0 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -799.3 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.94 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3514.27 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 136.9 MB). Peak memory consumption was 136.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 231878.99 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 1.4 GB in the end (delta: 647.5 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 145]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 145). Cancelled while BasicCegarLoop was constructing difference of abstraction (11541states) and FLOYD_HOARE automaton (currently 10 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (224 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 231.7s OverallTime, 11 OverallIterations, 8 TraceHistogramMax, 155.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1395 SDtfs, 15296 SDslu, 2075 SDs, 0 SdLazy, 19230 SolverSat, 3196 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 119.5s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 8036 GetRequests, 7829 SyntacticMatches, 2 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2022 ImplicationChecksByTransitivity, 12.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11541occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 44.0s AbstIntTime, 8 AbstIntIterations, 4 AbstIntStrong, 0.9975759525501606 AbsIntWeakeningRatio, 0.07745664739884393 AbsIntAvgWeakeningVarsNumRemoved, 16.229479768786128 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 1079 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 14.9s InterpolantComputationTime, 8224 NumberOfCodeBlocks, 8224 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 11242 ConstructedInterpolants, 0 QuantifiedInterpolants, 36073398 SizeOfPredicates, 21 NumberOfNonLiveVariables, 4334 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 19 InterpolantComputations, 3 PerfectInterpolantSequences, 18940/22900 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown