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/Problem16_label30_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 11:48:47,099 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 11:48:47,101 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 11:48:47,116 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 11:48:47,116 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 11:48:47,117 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 11:48:47,120 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 11:48:47,123 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 11:48:47,125 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 11:48:47,126 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 11:48:47,127 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 11:48:47,127 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 11:48:47,131 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 11:48:47,132 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 11:48:47,135 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 11:48:47,136 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 11:48:47,137 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 11:48:47,141 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 11:48:47,152 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 11:48:47,154 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 11:48:47,157 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 11:48:47,158 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 11:48:47,163 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 11:48:47,163 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 11:48:47,163 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 11:48:47,164 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 11:48:47,167 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 11:48:47,167 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 11:48:47,169 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 11:48:47,170 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 11:48:47,170 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 11:48:47,172 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 11:48:47,173 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 11:48:47,173 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 11:48:47,174 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 11:48:47,175 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 11:48:47,175 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 11:48:47,205 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 11:48:47,206 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 11:48:47,207 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 11:48:47,208 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 11:48:47,208 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 11:48:47,208 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 11:48:47,208 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 11:48:47,208 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 11:48:47,209 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 11:48:47,212 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 11:48:47,212 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 11:48:47,213 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 11:48:47,213 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 11:48:47,214 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 11:48:47,215 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 11:48:47,215 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 11:48:47,215 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 11:48:47,215 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 11:48:47,215 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 11:48:47,216 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 11:48:47,216 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 11:48:47,216 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 11:48:47,216 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 11:48:47,216 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 11:48:47,216 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 11:48:47,218 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 11:48:47,218 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 11:48:47,218 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 11:48:47,218 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 11:48:47,219 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 11:48:47,219 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 11:48:47,219 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 11:48:47,219 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 11:48:47,219 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 11:48:47,277 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 11:48:47,290 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 11:48:47,294 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 11:48:47,295 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 11:48:47,296 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 11:48:47,297 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label30_false-unreach-call.c [2018-10-27 11:48:47,364 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/17e30e16a/817e82aec023479ab067be9b891e17d4/FLAGd1312eead [2018-10-27 11:48:48,043 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 11:48:48,045 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label30_false-unreach-call.c [2018-10-27 11:48:48,065 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/17e30e16a/817e82aec023479ab067be9b891e17d4/FLAGd1312eead [2018-10-27 11:48:48,082 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/17e30e16a/817e82aec023479ab067be9b891e17d4 [2018-10-27 11:48:48,094 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 11:48:48,096 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 11:48:48,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 11:48:48,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 11:48:48,101 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 11:48:48,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:48:48" (1/1) ... [2018-10-27 11:48:48,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14b692d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:48, skipping insertion in model container [2018-10-27 11:48:48,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:48:48" (1/1) ... [2018-10-27 11:48:48,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 11:48:48,222 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 11:48:48,967 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 11:48:48,971 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 11:48:49,226 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 11:48:49,248 INFO L193 MainTranslator]: Completed translation [2018-10-27 11:48:49,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:49 WrapperNode [2018-10-27 11:48:49,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 11:48:49,249 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 11:48:49,250 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 11:48:49,250 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 11:48:49,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:49" (1/1) ... [2018-10-27 11:48:49,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:49" (1/1) ... [2018-10-27 11:48:49,593 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 11:48:49,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 11:48:49,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 11:48:49,594 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 11:48:49,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:49" (1/1) ... [2018-10-27 11:48:49,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:49" (1/1) ... [2018-10-27 11:48:49,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:49" (1/1) ... [2018-10-27 11:48:49,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:49" (1/1) ... [2018-10-27 11:48:49,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:49" (1/1) ... [2018-10-27 11:48:49,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:49" (1/1) ... [2018-10-27 11:48:49,761 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:49" (1/1) ... [2018-10-27 11:48:49,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 11:48:49,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 11:48:49,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 11:48:49,789 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 11:48:49,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:49" (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 11:48:49,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 11:48:49,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 11:48:49,858 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 11:48:49,858 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 11:48:49,859 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 11:48:49,859 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 11:48:49,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 11:48:49,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 11:48:49,859 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 11:48:49,860 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 11:48:55,745 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 11:48:55,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:48:55 BoogieIcfgContainer [2018-10-27 11:48:55,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 11:48:55,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 11:48:55,747 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 11:48:55,751 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 11:48:55,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:48:48" (1/3) ... [2018-10-27 11:48:55,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@433d0341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:48:55, skipping insertion in model container [2018-10-27 11:48:55,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:49" (2/3) ... [2018-10-27 11:48:55,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@433d0341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:48:55, skipping insertion in model container [2018-10-27 11:48:55,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:48:55" (3/3) ... [2018-10-27 11:48:55,755 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label30_false-unreach-call.c [2018-10-27 11:48:55,764 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 11:48:55,773 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 11:48:55,790 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 11:48:55,846 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 11:48:55,846 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 11:48:55,846 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 11:48:55,846 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 11:48:55,846 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 11:48:55,846 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 11:48:55,847 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 11:48:55,847 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 11:48:55,879 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-27 11:48:55,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-27 11:48:55,885 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:48:55,886 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] [2018-10-27 11:48:55,888 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:48:55,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:48:55,894 INFO L82 PathProgramCache]: Analyzing trace with hash 328599972, now seen corresponding path program 1 times [2018-10-27 11:48:55,897 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:48:55,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:48:55,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:48:55,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:48:55,943 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:48:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:48:56,367 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-27 11:48:56,374 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 11:48:56,376 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:48:56,377 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 11:48:56,377 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:48:56,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 11:48:56,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 11:48:56,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 11:48:56,403 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 4 states. [2018-10-27 11:49:03,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:49:03,644 INFO L93 Difference]: Finished difference Result 1513 states and 2838 transitions. [2018-10-27 11:49:03,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 11:49:03,647 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-10-27 11:49:03,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:49:03,676 INFO L225 Difference]: With dead ends: 1513 [2018-10-27 11:49:03,676 INFO L226 Difference]: Without dead ends: 1097 [2018-10-27 11:49:03,685 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 11:49:03,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2018-10-27 11:49:03,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1097. [2018-10-27 11:49:03,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1097 states. [2018-10-27 11:49:03,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1954 transitions. [2018-10-27 11:49:03,809 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1954 transitions. Word has length 22 [2018-10-27 11:49:03,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:49:03,810 INFO L481 AbstractCegarLoop]: Abstraction has 1097 states and 1954 transitions. [2018-10-27 11:49:03,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 11:49:03,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1954 transitions. [2018-10-27 11:49:03,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-27 11:49:03,817 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:49:03,817 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 11:49:03,817 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:49:03,818 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:49:03,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1272949813, now seen corresponding path program 1 times [2018-10-27 11:49:03,818 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:49:03,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:49:03,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:49:03,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:49:03,820 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:49:03,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:49:04,349 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:49:04,349 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:49:04,349 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 11:49:04,350 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:49:04,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 11:49:04,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 11:49:04,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 11:49:04,354 INFO L87 Difference]: Start difference. First operand 1097 states and 1954 transitions. Second operand 6 states. [2018-10-27 11:49:09,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:49:09,932 INFO L93 Difference]: Finished difference Result 3259 states and 5952 transitions. [2018-10-27 11:49:09,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 11:49:09,937 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2018-10-27 11:49:09,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:49:09,960 INFO L225 Difference]: With dead ends: 3259 [2018-10-27 11:49:09,960 INFO L226 Difference]: Without dead ends: 2168 [2018-10-27 11:49:09,967 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 11:49:09,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2018-10-27 11:49:10,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 2142. [2018-10-27 11:49:10,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2142 states. [2018-10-27 11:49:10,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 3739 transitions. [2018-10-27 11:49:10,075 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 3739 transitions. Word has length 93 [2018-10-27 11:49:10,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:49:10,076 INFO L481 AbstractCegarLoop]: Abstraction has 2142 states and 3739 transitions. [2018-10-27 11:49:10,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 11:49:10,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 3739 transitions. [2018-10-27 11:49:10,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-27 11:49:10,087 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:49:10,088 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 11:49:10,090 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:49:10,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:49:10,091 INFO L82 PathProgramCache]: Analyzing trace with hash 48893395, now seen corresponding path program 1 times [2018-10-27 11:49:10,091 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:49:10,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:49:10,092 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:49:10,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:49:10,092 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:49:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:49:10,416 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:49:10,416 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:49:10,417 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 11:49:10,417 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:49:10,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 11:49:10,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 11:49:10,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 11:49:10,418 INFO L87 Difference]: Start difference. First operand 2142 states and 3739 transitions. Second operand 6 states. [2018-10-27 11:49:15,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:49:15,854 INFO L93 Difference]: Finished difference Result 7053 states and 12688 transitions. [2018-10-27 11:49:15,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 11:49:15,855 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2018-10-27 11:49:15,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:49:15,892 INFO L225 Difference]: With dead ends: 7053 [2018-10-27 11:49:15,892 INFO L226 Difference]: Without dead ends: 4917 [2018-10-27 11:49:15,914 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 11:49:15,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2018-10-27 11:49:16,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 4877. [2018-10-27 11:49:16,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4877 states. [2018-10-27 11:49:16,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4877 states to 4877 states and 7891 transitions. [2018-10-27 11:49:16,062 INFO L78 Accepts]: Start accepts. Automaton has 4877 states and 7891 transitions. Word has length 121 [2018-10-27 11:49:16,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:49:16,063 INFO L481 AbstractCegarLoop]: Abstraction has 4877 states and 7891 transitions. [2018-10-27 11:49:16,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 11:49:16,063 INFO L276 IsEmpty]: Start isEmpty. Operand 4877 states and 7891 transitions. [2018-10-27 11:49:16,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-27 11:49:16,066 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:49:16,066 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 11:49:16,067 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:49:16,067 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:49:16,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1031937393, now seen corresponding path program 1 times [2018-10-27 11:49:16,067 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:49:16,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:49:16,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:49:16,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:49:16,068 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:49:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:49:16,293 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:49:16,294 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:49:16,294 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 11:49:16,294 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:49:16,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 11:49:16,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 11:49:16,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 11:49:16,295 INFO L87 Difference]: Start difference. First operand 4877 states and 7891 transitions. Second operand 6 states. [2018-10-27 11:49:19,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:49:19,270 INFO L93 Difference]: Finished difference Result 11909 states and 19972 transitions. [2018-10-27 11:49:19,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 11:49:19,276 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-10-27 11:49:19,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:49:19,329 INFO L225 Difference]: With dead ends: 11909 [2018-10-27 11:49:19,330 INFO L226 Difference]: Without dead ends: 7038 [2018-10-27 11:49:19,359 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 11:49:19,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7038 states. [2018-10-27 11:49:19,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7038 to 6977. [2018-10-27 11:49:19,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6977 states. [2018-10-27 11:49:19,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6977 states to 6977 states and 9942 transitions. [2018-10-27 11:49:19,569 INFO L78 Accepts]: Start accepts. Automaton has 6977 states and 9942 transitions. Word has length 139 [2018-10-27 11:49:19,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:49:19,570 INFO L481 AbstractCegarLoop]: Abstraction has 6977 states and 9942 transitions. [2018-10-27 11:49:19,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 11:49:19,570 INFO L276 IsEmpty]: Start isEmpty. Operand 6977 states and 9942 transitions. [2018-10-27 11:49:19,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-27 11:49:19,573 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:49:19,574 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 11:49:19,578 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:49:19,578 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:49:19,578 INFO L82 PathProgramCache]: Analyzing trace with hash 203002038, now seen corresponding path program 1 times [2018-10-27 11:49:19,578 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:49:19,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:49:19,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:49:19,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:49:19,580 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:49:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:49:19,891 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 11:49:20,330 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:49:20,330 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:49:20,330 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 11:49:20,331 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:49:20,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 11:49:20,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 11:49:20,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 11:49:20,332 INFO L87 Difference]: Start difference. First operand 6977 states and 9942 transitions. Second operand 6 states. [2018-10-27 11:49:30,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:49:30,062 INFO L93 Difference]: Finished difference Result 17709 states and 25496 transitions. [2018-10-27 11:49:30,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 11:49:30,062 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 186 [2018-10-27 11:49:30,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:49:30,126 INFO L225 Difference]: With dead ends: 17709 [2018-10-27 11:49:30,127 INFO L226 Difference]: Without dead ends: 10738 [2018-10-27 11:49:30,174 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 11:49:30,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10738 states. [2018-10-27 11:49:30,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10738 to 10702. [2018-10-27 11:49:30,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10702 states. [2018-10-27 11:49:30,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10702 states to 10702 states and 14504 transitions. [2018-10-27 11:49:30,437 INFO L78 Accepts]: Start accepts. Automaton has 10702 states and 14504 transitions. Word has length 186 [2018-10-27 11:49:30,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:49:30,437 INFO L481 AbstractCegarLoop]: Abstraction has 10702 states and 14504 transitions. [2018-10-27 11:49:30,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 11:49:30,438 INFO L276 IsEmpty]: Start isEmpty. Operand 10702 states and 14504 transitions. [2018-10-27 11:49:30,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-27 11:49:30,441 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:49:30,442 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:49:30,442 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:49:30,442 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:49:30,443 INFO L82 PathProgramCache]: Analyzing trace with hash 773533269, now seen corresponding path program 1 times [2018-10-27 11:49:30,443 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:49:30,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:49:30,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:49:30,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:49:30,446 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:49:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:49:30,819 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 83 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 11:49:30,820 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 11:49:30,820 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 11:49:30,821 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 224 with the following transitions: [2018-10-27 11:49:30,824 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [255], [257], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [676], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 11:49:30,877 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 11:49:30,877 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 11:49:31,493 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 11:49:31,495 INFO L272 AbstractInterpreter]: Visited 135 different actions 135 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 11:49:31,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:49:31,538 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 11:49:32,069 INFO L227 lantSequenceWeakener]: Weakened 214 states. On average, predicates are now at 77.34% of their original sizes. [2018-10-27 11:49:32,070 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 11:49:32,561 INFO L415 sIntCurrentIteration]: We unified 222 AI predicates to 222 [2018-10-27 11:49:32,562 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 11:49:32,563 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 11:49:32,563 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-10-27 11:49:32,563 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:49:32,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 11:49:32,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 11:49:32,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 11:49:32,564 INFO L87 Difference]: Start difference. First operand 10702 states and 14504 transitions. Second operand 8 states. [2018-10-27 11:49:36,348 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