java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label19_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 03:02:24,157 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 03:02:24,159 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 03:02:24,172 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 03:02:24,172 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 03:02:24,174 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 03:02:24,177 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 03:02:24,179 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 03:02:24,182 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 03:02:24,184 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 03:02:24,186 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 03:02:24,188 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 03:02:24,189 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 03:02:24,190 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 03:02:24,191 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 03:02:24,194 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 03:02:24,195 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 03:02:24,197 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 03:02:24,204 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 03:02:24,205 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 03:02:24,209 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 03:02:24,211 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 03:02:24,214 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 03:02:24,218 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 03:02:24,219 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 03:02:24,220 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 03:02:24,221 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 03:02:24,222 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 03:02:24,226 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 03:02:24,227 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 03:02:24,227 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 03:02:24,230 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 03:02:24,230 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 03:02:24,230 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 03:02:24,233 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 03:02:24,233 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 03:02:24,234 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-27 03:02:24,255 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 03:02:24,256 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 03:02:24,256 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 03:02:24,257 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 03:02:24,257 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 03:02:24,257 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 03:02:24,257 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 03:02:24,258 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 03:02:24,258 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 03:02:24,258 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 03:02:24,258 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 03:02:24,258 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 03:02:24,259 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 03:02:24,259 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 03:02:24,259 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 03:02:24,260 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 03:02:24,260 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 03:02:24,260 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 03:02:24,260 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 03:02:24,260 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 03:02:24,261 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 03:02:24,261 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 03:02:24,261 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 03:02:24,261 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 03:02:24,261 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 03:02:24,262 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 03:02:24,262 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 03:02:24,262 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 03:02:24,262 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 03:02:24,262 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 03:02:24,263 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 03:02:24,263 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 03:02:24,263 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 03:02:24,263 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 03:02:24,331 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 03:02:24,347 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 03:02:24,351 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 03:02:24,353 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 03:02:24,353 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 03:02:24,354 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label19_true-unreach-call_false-termination.c [2018-10-27 03:02:24,424 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/62122b9bb/4d1a7da906d94a8d81dd4998c011c92b/FLAG3882b9851 [2018-10-27 03:02:25,049 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 03:02:25,050 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label19_true-unreach-call_false-termination.c [2018-10-27 03:02:25,069 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/62122b9bb/4d1a7da906d94a8d81dd4998c011c92b/FLAG3882b9851 [2018-10-27 03:02:25,102 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/62122b9bb/4d1a7da906d94a8d81dd4998c011c92b [2018-10-27 03:02:25,122 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 03:02:25,124 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 03:02:25,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 03:02:25,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 03:02:25,131 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 03:02:25,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:02:25" (1/1) ... [2018-10-27 03:02:25,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@534a04b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:25, skipping insertion in model container [2018-10-27 03:02:25,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:02:25" (1/1) ... [2018-10-27 03:02:25,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 03:02:25,236 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 03:02:25,767 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:02:25,773 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 03:02:25,937 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:02:25,957 INFO L193 MainTranslator]: Completed translation [2018-10-27 03:02:25,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:25 WrapperNode [2018-10-27 03:02:25,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 03:02:25,959 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 03:02:25,959 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 03:02:25,959 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 03:02:25,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:25" (1/1) ... [2018-10-27 03:02:25,992 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:25" (1/1) ... [2018-10-27 03:02:26,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 03:02:26,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 03:02:26,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 03:02:26,181 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 03:02:26,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:25" (1/1) ... [2018-10-27 03:02:26,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:25" (1/1) ... [2018-10-27 03:02:26,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:25" (1/1) ... [2018-10-27 03:02:26,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:25" (1/1) ... [2018-10-27 03:02:26,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:25" (1/1) ... [2018-10-27 03:02:26,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:25" (1/1) ... [2018-10-27 03:02:26,290 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:25" (1/1) ... [2018-10-27 03:02:26,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 03:02:26,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 03:02:26,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 03:02:26,302 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 03:02:26,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:25" (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 03:02:26,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 03:02:26,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 03:02:26,375 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 03:02:26,375 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 03:02:26,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 03:02:26,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 03:02:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 03:02:26,376 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 03:02:30,052 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 03:02:30,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:02:30 BoogieIcfgContainer [2018-10-27 03:02:30,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 03:02:30,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 03:02:30,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 03:02:30,063 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 03:02:30,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:02:25" (1/3) ... [2018-10-27 03:02:30,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@433550ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:02:30, skipping insertion in model container [2018-10-27 03:02:30,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:25" (2/3) ... [2018-10-27 03:02:30,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@433550ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:02:30, skipping insertion in model container [2018-10-27 03:02:30,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:02:30" (3/3) ... [2018-10-27 03:02:30,069 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label19_true-unreach-call_false-termination.c [2018-10-27 03:02:30,083 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 03:02:30,097 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 03:02:30,114 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 03:02:30,154 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 03:02:30,154 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 03:02:30,155 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 03:02:30,155 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 03:02:30,155 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 03:02:30,155 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 03:02:30,156 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 03:02:30,156 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 03:02:30,183 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-27 03:02:30,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-27 03:02:30,195 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:02:30,196 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:02:30,199 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:02:30,205 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:02:30,205 INFO L82 PathProgramCache]: Analyzing trace with hash -949219895, now seen corresponding path program 1 times [2018-10-27 03:02:30,208 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:02:30,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:02:30,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:02:30,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:02:30,268 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:02:30,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:02:30,756 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:02:30,782 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 03:02:30,785 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:02:30,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 03:02:30,785 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:02:30,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 03:02:30,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 03:02:30,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 03:02:30,810 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-27 03:02:32,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:02:32,602 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-27 03:02:32,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 03:02:32,605 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2018-10-27 03:02:32,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:02:32,625 INFO L225 Difference]: With dead ends: 691 [2018-10-27 03:02:32,626 INFO L226 Difference]: Without dead ends: 434 [2018-10-27 03:02:32,634 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 03:02:32,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-27 03:02:32,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-27 03:02:32,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-27 03:02:32,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 772 transitions. [2018-10-27 03:02:32,724 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 772 transitions. Word has length 69 [2018-10-27 03:02:32,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:02:32,725 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 772 transitions. [2018-10-27 03:02:32,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 03:02:32,726 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 772 transitions. [2018-10-27 03:02:32,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-27 03:02:32,739 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:02:32,739 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:02:32,740 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:02:32,740 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:02:32,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1252535900, now seen corresponding path program 1 times [2018-10-27 03:02:32,740 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:02:32,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:02:32,745 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:02:32,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:02:32,745 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:02:32,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:02:33,068 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:02:33,068 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:02:33,069 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:02:33,069 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:02:33,073 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:02:33,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:02:33,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:02:33,074 INFO L87 Difference]: Start difference. First operand 434 states and 772 transitions. Second operand 6 states. [2018-10-27 03:02:36,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:02:36,973 INFO L93 Difference]: Finished difference Result 1234 states and 2250 transitions. [2018-10-27 03:02:36,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:02:36,975 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-10-27 03:02:36,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:02:36,985 INFO L225 Difference]: With dead ends: 1234 [2018-10-27 03:02:36,985 INFO L226 Difference]: Without dead ends: 806 [2018-10-27 03:02:36,990 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 03:02:36,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2018-10-27 03:02:37,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 797. [2018-10-27 03:02:37,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 797 states. [2018-10-27 03:02:37,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1300 transitions. [2018-10-27 03:02:37,059 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1300 transitions. Word has length 139 [2018-10-27 03:02:37,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:02:37,060 INFO L481 AbstractCegarLoop]: Abstraction has 797 states and 1300 transitions. [2018-10-27 03:02:37,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:02:37,060 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1300 transitions. [2018-10-27 03:02:37,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-27 03:02:37,073 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:02:37,074 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:02:37,074 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:02:37,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:02:37,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1412263263, now seen corresponding path program 1 times [2018-10-27 03:02:37,075 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:02:37,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:02:37,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:02:37,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:02:37,080 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:02:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:02:37,345 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:02:37,345 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:02:37,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 03:02:37,346 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:02:37,346 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 03:02:37,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 03:02:37,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 03:02:37,347 INFO L87 Difference]: Start difference. First operand 797 states and 1300 transitions. Second operand 5 states. [2018-10-27 03:02:39,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:02:39,774 INFO L93 Difference]: Finished difference Result 2186 states and 3741 transitions. [2018-10-27 03:02:39,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:02:39,776 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2018-10-27 03:02:39,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:02:39,789 INFO L225 Difference]: With dead ends: 2186 [2018-10-27 03:02:39,789 INFO L226 Difference]: Without dead ends: 1395 [2018-10-27 03:02:39,796 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 03:02:39,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2018-10-27 03:02:39,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 1369. [2018-10-27 03:02:39,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1369 states. [2018-10-27 03:02:39,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 2191 transitions. [2018-10-27 03:02:39,863 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 2191 transitions. Word has length 140 [2018-10-27 03:02:39,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:02:39,864 INFO L481 AbstractCegarLoop]: Abstraction has 1369 states and 2191 transitions. [2018-10-27 03:02:39,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 03:02:39,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 2191 transitions. [2018-10-27 03:02:39,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-27 03:02:39,868 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:02:39,868 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:02:39,868 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:02:39,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:02:39,869 INFO L82 PathProgramCache]: Analyzing trace with hash 531411331, now seen corresponding path program 1 times [2018-10-27 03:02:39,869 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:02:39,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:02:39,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:02:39,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:02:39,871 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:02:39,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:02:40,207 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:02:40,207 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:02:40,207 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 03:02:40,208 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:02:40,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 03:02:40,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 03:02:40,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 03:02:40,210 INFO L87 Difference]: Start difference. First operand 1369 states and 2191 transitions. Second operand 5 states. [2018-10-27 03:02:44,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:02:44,183 INFO L93 Difference]: Finished difference Result 4059 states and 6474 transitions. [2018-10-27 03:02:44,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 03:02:44,191 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2018-10-27 03:02:44,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:02:44,210 INFO L225 Difference]: With dead ends: 4059 [2018-10-27 03:02:44,210 INFO L226 Difference]: Without dead ends: 2696 [2018-10-27 03:02:44,221 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 03:02:44,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2696 states. [2018-10-27 03:02:44,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2696 to 2603. [2018-10-27 03:02:44,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2603 states. [2018-10-27 03:02:44,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 3729 transitions. [2018-10-27 03:02:44,327 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 3729 transitions. Word has length 142 [2018-10-27 03:02:44,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:02:44,328 INFO L481 AbstractCegarLoop]: Abstraction has 2603 states and 3729 transitions. [2018-10-27 03:02:44,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 03:02:44,328 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 3729 transitions. [2018-10-27 03:02:44,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-27 03:02:44,332 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:02:44,332 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:02:44,332 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:02:44,332 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:02:44,333 INFO L82 PathProgramCache]: Analyzing trace with hash -2121902484, now seen corresponding path program 1 times [2018-10-27 03:02:44,333 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:02:44,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:02:44,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:02:44,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:02:44,335 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:02:44,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:02:44,575 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:02:44,575 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:02:44,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 03:02:44,575 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:02:44,576 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 03:02:44,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 03:02:44,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-27 03:02:44,577 INFO L87 Difference]: Start difference. First operand 2603 states and 3729 transitions. Second operand 5 states. [2018-10-27 03:02:47,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:02:47,617 INFO L93 Difference]: Finished difference Result 6795 states and 10054 transitions. [2018-10-27 03:02:47,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-27 03:02:47,618 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2018-10-27 03:02:47,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:02:47,639 INFO L225 Difference]: With dead ends: 6795 [2018-10-27 03:02:47,639 INFO L226 Difference]: Without dead ends: 3293 [2018-10-27 03:02:47,660 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:02:47,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3293 states. [2018-10-27 03:02:47,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3293 to 3278. [2018-10-27 03:02:47,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3278 states. [2018-10-27 03:02:47,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 4140 transitions. [2018-10-27 03:02:47,760 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 4140 transitions. Word has length 143 [2018-10-27 03:02:47,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:02:47,760 INFO L481 AbstractCegarLoop]: Abstraction has 3278 states and 4140 transitions. [2018-10-27 03:02:47,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 03:02:47,761 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 4140 transitions. [2018-10-27 03:02:47,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-27 03:02:47,769 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:02:47,770 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:02:47,770 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:02:47,770 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:02:47,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1248172171, now seen corresponding path program 1 times [2018-10-27 03:02:47,771 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:02:47,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:02:47,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:02:47,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:02:47,772 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:02:47,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:02:48,066 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:02:48,066 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:02:48,067 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 03:02:48,067 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:02:48,067 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 03:02:48,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 03:02:48,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 03:02:48,068 INFO L87 Difference]: Start difference. First operand 3278 states and 4140 transitions. Second operand 4 states. [2018-10-27 03:02:49,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:02:49,950 INFO L93 Difference]: Finished difference Result 6733 states and 8492 transitions. [2018-10-27 03:02:49,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 03:02:49,951 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 242 [2018-10-27 03:02:49,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:02:49,967 INFO L225 Difference]: With dead ends: 6733 [2018-10-27 03:02:49,967 INFO L226 Difference]: Without dead ends: 3461 [2018-10-27 03:02:49,981 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 03:02:49,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3461 states. [2018-10-27 03:02:50,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3461 to 3461. [2018-10-27 03:02:50,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3461 states. [2018-10-27 03:02:50,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3461 states to 3461 states and 4335 transitions. [2018-10-27 03:02:50,065 INFO L78 Accepts]: Start accepts. Automaton has 3461 states and 4335 transitions. Word has length 242 [2018-10-27 03:02:50,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:02:50,066 INFO L481 AbstractCegarLoop]: Abstraction has 3461 states and 4335 transitions. [2018-10-27 03:02:50,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 03:02:50,066 INFO L276 IsEmpty]: Start isEmpty. Operand 3461 states and 4335 transitions. [2018-10-27 03:02:50,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-10-27 03:02:50,080 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:02:50,080 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:02:50,080 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:02:50,081 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:02:50,081 INFO L82 PathProgramCache]: Analyzing trace with hash -2039548178, now seen corresponding path program 1 times [2018-10-27 03:02:50,081 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:02:50,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:02:50,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:02:50,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:02:50,082 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:02:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:02:50,599 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 31 [2018-10-27 03:02:51,111 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 224 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:02:51,111 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:02:51,111 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:02:51,112 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 285 with the following transitions: [2018-10-27 03:02:51,115 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [453], [455], [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], [622], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 03:02:51,189 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:02:51,189 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:02:53,279 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:02:57,837 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:02:57,838 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 03:02:57,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:02:57,875 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:03:01,064 INFO L227 lantSequenceWeakener]: Weakened 276 states. On average, predicates are now at 78.18% of their original sizes. [2018-10-27 03:03:01,066 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:03:01,519 INFO L415 sIntCurrentIteration]: We unified 283 AI predicates to 283 [2018-10-27 03:03:01,520 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:03:01,520 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:03:01,521 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2018-10-27 03:03:01,521 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:03:01,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 03:03:01,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 03:03:01,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 03:03:01,522 INFO L87 Difference]: Start difference. First operand 3461 states and 4335 transitions. Second operand 7 states. [2018-10-27 03:03:25,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:03:25,344 INFO L93 Difference]: Finished difference Result 7101 states and 8875 transitions. [2018-10-27 03:03:25,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:03:25,345 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 284 [2018-10-27 03:03:25,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:03:25,362 INFO L225 Difference]: With dead ends: 7101 [2018-10-27 03:03:25,363 INFO L226 Difference]: Without dead ends: 3646 [2018-10-27 03:03:25,373 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 284 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-27 03:03:25,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3646 states. [2018-10-27 03:03:25,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3646 to 3644. [2018-10-27 03:03:25,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3644 states. [2018-10-27 03:03:25,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 4520 transitions. [2018-10-27 03:03:25,468 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 4520 transitions. Word has length 284 [2018-10-27 03:03:25,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:03:25,469 INFO L481 AbstractCegarLoop]: Abstraction has 3644 states and 4520 transitions. [2018-10-27 03:03:25,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 03:03:25,469 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 4520 transitions. [2018-10-27 03:03:25,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2018-10-27 03:03:25,485 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:03:25,485 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:03:25,486 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:03:25,486 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:03:25,486 INFO L82 PathProgramCache]: Analyzing trace with hash -806219320, now seen corresponding path program 1 times [2018-10-27 03:03:25,486 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:03:25,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:03:25,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:03:25,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:03:25,487 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:03:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:03:26,600 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 199 proven. 297 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 03:03:26,600 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:03:26,600 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:03:26,601 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 396 with the following transitions: [2018-10-27 03:03:26,601 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [453], [455], [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], [622], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 03:03:26,610 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:03:26,610 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:03:28,076 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:03:35,604 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:03:35,604 INFO L272 AbstractInterpreter]: Visited 122 different actions 238 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 03:03:35,615 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:03:35,615 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:03:40,482 INFO L227 lantSequenceWeakener]: Weakened 263 states. On average, predicates are now at 78.33% of their original sizes. [2018-10-27 03:03:40,483 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:03:47,918 INFO L415 sIntCurrentIteration]: We unified 394 AI predicates to 394 [2018-10-27 03:03:47,918 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:03:47,919 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:03:47,919 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [15] total 30 [2018-10-27 03:03:47,919 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:03:47,920 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-27 03:03:47,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-27 03:03:47,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2018-10-27 03:03:47,920 INFO L87 Difference]: Start difference. First operand 3644 states and 4520 transitions. Second operand 17 states. [2018-10-27 03:05:58,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:05:58,020 INFO L93 Difference]: Finished difference Result 7477 states and 9281 transitions. [2018-10-27 03:05:58,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-27 03:05:58,020 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 395 [2018-10-27 03:05:58,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:05:58,036 INFO L225 Difference]: With dead ends: 7477 [2018-10-27 03:05:58,036 INFO L226 Difference]: Without dead ends: 4022 [2018-10-27 03:05:58,046 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 403 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2018-10-27 03:05:58,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4022 states. [2018-10-27 03:05:58,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4022 to 4012. [2018-10-27 03:05:58,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4012 states. [2018-10-27 03:05:58,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4012 states to 4012 states and 4894 transitions. [2018-10-27 03:05:58,250 INFO L78 Accepts]: Start accepts. Automaton has 4012 states and 4894 transitions. Word has length 395 [2018-10-27 03:05:58,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:05:58,250 INFO L481 AbstractCegarLoop]: Abstraction has 4012 states and 4894 transitions. [2018-10-27 03:05:58,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-27 03:05:58,251 INFO L276 IsEmpty]: Start isEmpty. Operand 4012 states and 4894 transitions. [2018-10-27 03:05:58,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2018-10-27 03:05:58,274 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:05:58,275 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:05:58,275 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:05:58,275 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:05:58,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1783785411, now seen corresponding path program 1 times [2018-10-27 03:05:58,276 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:05:58,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:05:58,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:05:58,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:05:58,277 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:05:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:05:58,748 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-27 03:05:59,025 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-10-27 03:05:59,437 WARN L179 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 21 [2018-10-27 03:05:59,713 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 14 [2018-10-27 03:06:00,345 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 558 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-10-27 03:06:00,346 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:06:00,346 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:06:00,346 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 506 with the following transitions: [2018-10-27 03:06:00,346 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [453], [455], [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], [622], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 03:06:00,351 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:06:00,351 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:06:01,670 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-27 03:06:24,882 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-27 03:06:24,883 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-27 03:06:24,884 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 03:06:24,885 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:06:24,885 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 03:06:24,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:06:24,895 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 03:06:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:06:25,061 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 03:06:25,097 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-27 03:06:25,298 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 03:06:25,299 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 03:06:25,304 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 03:06:25,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:06:25 BoogieIcfgContainer [2018-10-27 03:06:25,305 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 03:06:25,305 INFO L168 Benchmark]: Toolchain (without parser) took 240182.99 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -563.6 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-27 03:06:25,307 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 03:06:25,307 INFO L168 Benchmark]: CACSL2BoogieTranslator took 833.41 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 03:06:25,308 INFO L168 Benchmark]: Boogie Procedure Inliner took 221.37 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 729.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -815.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-27 03:06:25,309 INFO L168 Benchmark]: Boogie Preprocessor took 120.33 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2018-10-27 03:06:25,310 INFO L168 Benchmark]: RCFGBuilder took 3753.93 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 118.2 MB). Peak memory consumption was 118.2 MB. Max. memory is 7.1 GB. [2018-10-27 03:06:25,310 INFO L168 Benchmark]: TraceAbstraction took 235248.19 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 78.0 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-27 03:06:25,315 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 833.41 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 221.37 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 729.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -815.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.33 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3753.93 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 118.2 MB). Peak memory consumption was 118.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 235248.19 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 78.0 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 190]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 190). Cancelled while BasicCegarLoop was analyzing trace of length 506 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 11 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 235.1s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 171.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1388 SDtfs, 5809 SDslu, 990 SDs, 0 SdLazy, 9154 SolverSat, 1713 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 83.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 734 GetRequests, 674 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 11.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4012occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 40.3s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9963901911673408 AbsIntWeakeningRatio, 0.08567208271787297 AbsIntAvgWeakeningVarsNumRemoved, 393.1802067946824 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 155 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 1554 NumberOfCodeBlocks, 1554 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1546 ConstructedInterpolants, 0 QuantifiedInterpolants, 3419291 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 738/1037 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown