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-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label09_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 12:01:33,239 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 12:01:33,242 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 12:01:33,257 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 12:01:33,258 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 12:01:33,260 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 12:01:33,261 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 12:01:33,263 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 12:01:33,265 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 12:01:33,266 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 12:01:33,267 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 12:01:33,267 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 12:01:33,268 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 12:01:33,269 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 12:01:33,270 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 12:01:33,271 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 12:01:33,272 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 12:01:33,274 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 12:01:33,275 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 12:01:33,277 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 12:01:33,278 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 12:01:33,279 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 12:01:33,281 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 12:01:33,288 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 12:01:33,288 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 12:01:33,289 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 12:01:33,290 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 12:01:33,290 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 12:01:33,316 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 12:01:33,316 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 12:01:33,317 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 12:01:33,317 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 12:01:33,317 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 12:01:33,317 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 12:01:33,318 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 12:01:33,318 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 12:01:33,318 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 12:01:33,318 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 12:01:33,318 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 12:01:33,319 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 12:01:33,320 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 12:01:33,320 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 12:01:33,320 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 12:01:33,320 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 12:01:33,320 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 12:01:33,321 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 12:01:33,321 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 12:01:33,321 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 12:01:33,321 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 12:01:33,321 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 12:01:33,321 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 12:01:33,323 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 12:01:33,323 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 12:01:33,324 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 12:01:33,324 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 12:01:33,324 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 12:01:33,324 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 12:01:33,324 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 12:01:33,325 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 12:01:33,325 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 12:01:33,325 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 12:01:33,325 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 12:01:33,377 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 12:01:33,400 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 12:01:33,404 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 12:01:33,405 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 12:01:33,406 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 12:01:33,406 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label09_false-unreach-call.c [2018-10-27 12:01:33,460 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/863ec22cc/cdc030d0c0c94f30a1fc130ca004a29c/FLAGd380cf682 [2018-10-27 12:01:34,155 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 12:01:34,156 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label09_false-unreach-call.c [2018-10-27 12:01:34,183 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/863ec22cc/cdc030d0c0c94f30a1fc130ca004a29c/FLAGd380cf682 [2018-10-27 12:01:34,204 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/863ec22cc/cdc030d0c0c94f30a1fc130ca004a29c [2018-10-27 12:01:34,216 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 12:01:34,218 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 12:01:34,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 12:01:34,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 12:01:34,227 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 12:01:34,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:01:34" (1/1) ... [2018-10-27 12:01:34,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ebb76c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:01:34, skipping insertion in model container [2018-10-27 12:01:34,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:01:34" (1/1) ... [2018-10-27 12:01:34,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 12:01:34,378 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 12:01:35,459 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 12:01:35,464 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 12:01:35,907 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 12:01:35,934 INFO L193 MainTranslator]: Completed translation [2018-10-27 12:01:35,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:01:35 WrapperNode [2018-10-27 12:01:35,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 12:01:35,936 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 12:01:35,936 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 12:01:35,937 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 12:01:35,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:01:35" (1/1) ... [2018-10-27 12:01:35,996 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:01:35" (1/1) ... [2018-10-27 12:01:36,333 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 12:01:36,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 12:01:36,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 12:01:36,334 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 12:01:36,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:01:35" (1/1) ... [2018-10-27 12:01:36,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:01:35" (1/1) ... [2018-10-27 12:01:36,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:01:35" (1/1) ... [2018-10-27 12:01:36,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:01:35" (1/1) ... [2018-10-27 12:01:36,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:01:35" (1/1) ... [2018-10-27 12:01:36,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:01:35" (1/1) ... [2018-10-27 12:01:36,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:01:35" (1/1) ... [2018-10-27 12:01:36,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 12:01:36,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 12:01:36,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 12:01:36,590 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 12:01:36,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:01:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 12:01:36,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 12:01:36,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 12:01:36,666 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 12:01:36,666 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 12:01:36,666 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 12:01:36,667 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 12:01:36,667 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 12:01:36,667 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 12:01:36,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 12:01:36,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 12:01:36,668 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 12:01:36,668 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 12:01:44,868 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 12:01:44,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:01:44 BoogieIcfgContainer [2018-10-27 12:01:44,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 12:01:44,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 12:01:44,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 12:01:44,875 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 12:01:44,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:01:34" (1/3) ... [2018-10-27 12:01:44,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe0e610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:01:44, skipping insertion in model container [2018-10-27 12:01:44,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:01:35" (2/3) ... [2018-10-27 12:01:44,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe0e610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:01:44, skipping insertion in model container [2018-10-27 12:01:44,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:01:44" (3/3) ... [2018-10-27 12:01:44,879 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label09_false-unreach-call.c [2018-10-27 12:01:44,890 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 12:01:44,909 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 12:01:44,927 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 12:01:44,990 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 12:01:44,990 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 12:01:44,990 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 12:01:44,990 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 12:01:44,991 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 12:01:44,991 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 12:01:44,991 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 12:01:44,991 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 12:01:45,029 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-27 12:01:45,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-27 12:01:45,035 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:01:45,036 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 12:01:45,039 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:01:45,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:01:45,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1936021327, now seen corresponding path program 1 times [2018-10-27 12:01:45,046 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:01:45,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:01:45,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:01:45,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:01:45,095 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:01:45,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:01:45,425 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 12:01:45,431 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 12:01:45,431 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 12:01:45,431 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:01:45,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 12:01:45,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 12:01:45,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 12:01:45,459 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-27 12:01:51,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:01:51,686 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-27 12:01:51,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 12:01:51,691 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-10-27 12:01:51,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:01:51,732 INFO L225 Difference]: With dead ends: 2251 [2018-10-27 12:01:51,733 INFO L226 Difference]: Without dead ends: 1474 [2018-10-27 12:01:51,747 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 12:01:51,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-27 12:01:51,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-27 12:01:51,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-27 12:01:51,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2800 transitions. [2018-10-27 12:01:51,945 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2800 transitions. Word has length 17 [2018-10-27 12:01:51,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:01:51,946 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2800 transitions. [2018-10-27 12:01:51,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 12:01:51,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2800 transitions. [2018-10-27 12:01:51,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-27 12:01:51,953 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:01:51,953 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 12:01:51,954 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:01:51,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:01:51,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1492732416, now seen corresponding path program 1 times [2018-10-27 12:01:51,954 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:01:51,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:01:51,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:01:51,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:01:51,957 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:01:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:01:52,230 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:01:52,230 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 12:01:52,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 12:01:52,230 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:01:52,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 12:01:52,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 12:01:52,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 12:01:52,235 INFO L87 Difference]: Start difference. First operand 1474 states and 2800 transitions. Second operand 5 states. [2018-10-27 12:01:59,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:01:59,909 INFO L93 Difference]: Finished difference Result 4419 states and 8483 transitions. [2018-10-27 12:01:59,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 12:01:59,911 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2018-10-27 12:01:59,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:01:59,932 INFO L225 Difference]: With dead ends: 4419 [2018-10-27 12:01:59,932 INFO L226 Difference]: Without dead ends: 2951 [2018-10-27 12:01:59,938 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 12:01:59,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-10-27 12:02:00,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2925. [2018-10-27 12:02:00,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2018-10-27 12:02:00,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 5205 transitions. [2018-10-27 12:02:00,031 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 5205 transitions. Word has length 87 [2018-10-27 12:02:00,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:02:00,032 INFO L481 AbstractCegarLoop]: Abstraction has 2925 states and 5205 transitions. [2018-10-27 12:02:00,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 12:02:00,032 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 5205 transitions. [2018-10-27 12:02:00,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-27 12:02:00,036 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:02:00,036 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 12:02:00,036 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:02:00,036 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:02:00,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1467766747, now seen corresponding path program 1 times [2018-10-27 12:02:00,037 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:02:00,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:02:00,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:02:00,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:02:00,038 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:02:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:02:00,233 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:02:00,234 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 12:02:00,234 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 12:02:00,234 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:02:00,235 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 12:02:00,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 12:02:00,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 12:02:00,236 INFO L87 Difference]: Start difference. First operand 2925 states and 5205 transitions. Second operand 5 states. [2018-10-27 12:02:05,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:02:05,672 INFO L93 Difference]: Finished difference Result 7345 states and 13001 transitions. [2018-10-27 12:02:05,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 12:02:05,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2018-10-27 12:02:05,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:02:05,703 INFO L225 Difference]: With dead ends: 7345 [2018-10-27 12:02:05,703 INFO L226 Difference]: Without dead ends: 4426 [2018-10-27 12:02:05,712 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 12:02:05,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4426 states. [2018-10-27 12:02:05,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4426 to 4391. [2018-10-27 12:02:05,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4391 states. [2018-10-27 12:02:05,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4391 states to 4391 states and 6473 transitions. [2018-10-27 12:02:05,828 INFO L78 Accepts]: Start accepts. Automaton has 4391 states and 6473 transitions. Word has length 88 [2018-10-27 12:02:05,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:02:05,829 INFO L481 AbstractCegarLoop]: Abstraction has 4391 states and 6473 transitions. [2018-10-27 12:02:05,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 12:02:05,829 INFO L276 IsEmpty]: Start isEmpty. Operand 4391 states and 6473 transitions. [2018-10-27 12:02:05,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-27 12:02:05,832 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:02:05,832 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 12:02:05,832 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:02:05,832 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:02:05,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1043283703, now seen corresponding path program 1 times [2018-10-27 12:02:05,833 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:02:05,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:02:05,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:02:05,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:02:05,834 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:02:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:02:06,170 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:02:06,171 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 12:02:06,171 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 12:02:06,171 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:02:06,172 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 12:02:06,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 12:02:06,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 12:02:06,172 INFO L87 Difference]: Start difference. First operand 4391 states and 6473 transitions. Second operand 5 states. [2018-10-27 12:02:15,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:02:15,967 INFO L93 Difference]: Finished difference Result 14819 states and 21982 transitions. [2018-10-27 12:02:15,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 12:02:15,968 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2018-10-27 12:02:15,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:02:16,022 INFO L225 Difference]: With dead ends: 14819 [2018-10-27 12:02:16,022 INFO L226 Difference]: Without dead ends: 10434 [2018-10-27 12:02:16,044 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 12:02:16,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10434 states. [2018-10-27 12:02:16,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10434 to 10284. [2018-10-27 12:02:16,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10284 states. [2018-10-27 12:02:16,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10284 states to 10284 states and 13624 transitions. [2018-10-27 12:02:16,298 INFO L78 Accepts]: Start accepts. Automaton has 10284 states and 13624 transitions. Word has length 90 [2018-10-27 12:02:16,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:02:16,298 INFO L481 AbstractCegarLoop]: Abstraction has 10284 states and 13624 transitions. [2018-10-27 12:02:16,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 12:02:16,299 INFO L276 IsEmpty]: Start isEmpty. Operand 10284 states and 13624 transitions. [2018-10-27 12:02:16,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-27 12:02:16,309 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:02:16,309 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 12:02:16,310 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:02:16,311 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:02:16,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1013837730, now seen corresponding path program 1 times [2018-10-27 12:02:16,311 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:02:16,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:02:16,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:02:16,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:02:16,313 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:02:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:02:16,526 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-27 12:02:16,527 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 12:02:16,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 12:02:16,527 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:02:16,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 12:02:16,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 12:02:16,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 12:02:16,529 INFO L87 Difference]: Start difference. First operand 10284 states and 13624 transitions. Second operand 3 states. [2018-10-27 12:02:23,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:02:23,544 INFO L93 Difference]: Finished difference Result 28424 states and 38618 transitions. [2018-10-27 12:02:23,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 12:02:23,551 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2018-10-27 12:02:23,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:02:23,621 INFO L225 Difference]: With dead ends: 28424 [2018-10-27 12:02:23,621 INFO L226 Difference]: Without dead ends: 18146 [2018-10-27 12:02:23,667 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 12:02:23,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18146 states. [2018-10-27 12:02:24,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18146 to 18140. [2018-10-27 12:02:24,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18140 states. [2018-10-27 12:02:24,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18140 states to 18140 states and 22671 transitions. [2018-10-27 12:02:24,200 INFO L78 Accepts]: Start accepts. Automaton has 18140 states and 22671 transitions. Word has length 194 [2018-10-27 12:02:24,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:02:24,201 INFO L481 AbstractCegarLoop]: Abstraction has 18140 states and 22671 transitions. [2018-10-27 12:02:24,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 12:02:24,201 INFO L276 IsEmpty]: Start isEmpty. Operand 18140 states and 22671 transitions. [2018-10-27 12:02:24,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-10-27 12:02:24,208 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:02:24,209 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 12:02:24,209 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:02:24,209 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:02:24,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1598601286, now seen corresponding path program 1 times [2018-10-27 12:02:24,210 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:02:24,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:02:24,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:02:24,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:02:24,213 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:02:24,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:02:24,560 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 12:02:24,691 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 15 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:02:24,691 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:02:24,691 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:02:24,692 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 279 with the following transitions: [2018-10-27 12:02:24,694 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1659], [1661], [1664], [1672], [1680], [1688], [1696], [1704], [1712], [1720], [1728], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2388], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-27 12:02:24,742 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:02:24,742 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:02:25,364 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 12:02:25,371 INFO L272 AbstractInterpreter]: Visited 143 different actions 143 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 12:02:25,414 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:02:25,415 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 12:02:26,001 INFO L227 lantSequenceWeakener]: Weakened 269 states. On average, predicates are now at 77.29% of their original sizes. [2018-10-27 12:02:26,001 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 12:02:26,180 INFO L415 sIntCurrentIteration]: We unified 277 AI predicates to 277 [2018-10-27 12:02:26,180 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 12:02:26,181 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 12:02:26,181 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2018-10-27 12:02:26,181 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:02:26,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 12:02:26,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 12:02:26,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 12:02:26,189 INFO L87 Difference]: Start difference. First operand 18140 states and 22671 transitions. Second operand 6 states. [2018-10-27 12:02:32,228 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown