java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label17_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 06:18:34,132 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 06:18:34,134 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 06:18:34,154 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 06:18:34,154 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 06:18:34,155 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 06:18:34,156 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 06:18:34,158 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 06:18:34,160 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 06:18:34,161 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 06:18:34,162 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 06:18:34,162 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 06:18:34,163 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 06:18:34,164 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 06:18:34,165 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 06:18:34,166 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 06:18:34,167 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 06:18:34,168 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 06:18:34,171 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 06:18:34,178 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 06:18:34,179 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 06:18:34,180 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 06:18:34,188 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 06:18:34,188 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 06:18:34,188 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 06:18:34,189 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 06:18:34,194 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 06:18:34,195 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 06:18:34,195 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 06:18:34,200 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 06:18:34,200 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 06:18:34,201 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 06:18:34,201 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 06:18:34,201 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 06:18:34,202 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 06:18:34,203 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 06:18:34,205 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 06:18:34,220 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 06:18:34,220 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 06:18:34,221 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 06:18:34,221 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 06:18:34,221 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 06:18:34,222 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 06:18:34,222 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 06:18:34,222 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 06:18:34,222 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 06:18:34,222 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 06:18:34,222 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 06:18:34,223 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 06:18:34,223 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 06:18:34,223 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 06:18:34,224 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 06:18:34,224 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 06:18:34,224 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 06:18:34,224 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 06:18:34,225 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 06:18:34,225 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 06:18:34,225 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 06:18:34,225 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 06:18:34,226 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 06:18:34,226 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 06:18:34,226 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 06:18:34,226 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 06:18:34,226 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 06:18:34,227 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 06:18:34,227 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 06:18:34,227 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 06:18:34,227 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 06:18:34,227 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 06:18:34,228 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 06:18:34,228 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 06:18:34,228 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 06:18:34,228 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 06:18:34,279 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 06:18:34,297 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 06:18:34,302 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 06:18:34,304 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 06:18:34,305 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 06:18:34,305 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label17_true-unreach-call.c [2018-10-27 06:18:34,367 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2c2a9bb5b/3756eb955b7d4bd6bfc597dd183088e4/FLAG9769df04e [2018-10-27 06:18:35,076 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 06:18:35,077 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label17_true-unreach-call.c [2018-10-27 06:18:35,098 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2c2a9bb5b/3756eb955b7d4bd6bfc597dd183088e4/FLAG9769df04e [2018-10-27 06:18:35,121 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2c2a9bb5b/3756eb955b7d4bd6bfc597dd183088e4 [2018-10-27 06:18:35,135 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 06:18:35,136 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 06:18:35,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 06:18:35,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 06:18:35,141 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 06:18:35,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:18:35" (1/1) ... [2018-10-27 06:18:35,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@360cb222 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:18:35, skipping insertion in model container [2018-10-27 06:18:35,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:18:35" (1/1) ... [2018-10-27 06:18:35,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 06:18:35,256 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 06:18:36,003 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:18:36,009 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 06:18:36,293 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:18:36,316 INFO L193 MainTranslator]: Completed translation [2018-10-27 06:18:36,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:18:36 WrapperNode [2018-10-27 06:18:36,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 06:18:36,318 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 06:18:36,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 06:18:36,318 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 06:18:36,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:18:36" (1/1) ... [2018-10-27 06:18:36,365 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:18:36" (1/1) ... [2018-10-27 06:18:36,611 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 06:18:36,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 06:18:36,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 06:18:36,612 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 06:18:36,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:18:36" (1/1) ... [2018-10-27 06:18:36,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:18:36" (1/1) ... [2018-10-27 06:18:36,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:18:36" (1/1) ... [2018-10-27 06:18:36,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:18:36" (1/1) ... [2018-10-27 06:18:36,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:18:36" (1/1) ... [2018-10-27 06:18:36,710 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:18:36" (1/1) ... [2018-10-27 06:18:36,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:18:36" (1/1) ... [2018-10-27 06:18:36,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 06:18:36,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 06:18:36,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 06:18:36,738 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 06:18:36,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:18:36" (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 06:18:36,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 06:18:36,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 06:18:36,809 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 06:18:36,809 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 06:18:36,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 06:18:36,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 06:18:36,809 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 06:18:36,810 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 06:18:41,585 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 06:18:41,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:18:41 BoogieIcfgContainer [2018-10-27 06:18:41,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 06:18:41,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 06:18:41,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 06:18:41,591 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 06:18:41,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:18:35" (1/3) ... [2018-10-27 06:18:41,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a2b45cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:18:41, skipping insertion in model container [2018-10-27 06:18:41,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:18:36" (2/3) ... [2018-10-27 06:18:41,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a2b45cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:18:41, skipping insertion in model container [2018-10-27 06:18:41,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:18:41" (3/3) ... [2018-10-27 06:18:41,595 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label17_true-unreach-call.c [2018-10-27 06:18:41,604 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 06:18:41,613 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 06:18:41,630 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 06:18:41,671 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 06:18:41,671 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 06:18:41,672 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 06:18:41,672 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 06:18:41,672 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 06:18:41,672 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 06:18:41,672 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 06:18:41,673 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 06:18:41,703 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-27 06:18:41,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-27 06:18:41,724 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:18:41,725 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:18:41,728 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:18:41,733 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:18:41,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1877378719, now seen corresponding path program 1 times [2018-10-27 06:18:41,736 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:18:41,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:18:41,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:18:41,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:18:41,793 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:18:42,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:18:42,697 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 4 [2018-10-27 06:18:42,966 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 06:18:42,968 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:18:42,968 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 06:18:42,968 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:18:42,974 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 06:18:42,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 06:18:42,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 06:18:42,989 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-10-27 06:18:46,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:18:46,625 INFO L93 Difference]: Finished difference Result 1066 states and 1924 transitions. [2018-10-27 06:18:46,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 06:18:46,629 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 206 [2018-10-27 06:18:46,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:18:46,653 INFO L225 Difference]: With dead ends: 1066 [2018-10-27 06:18:46,654 INFO L226 Difference]: Without dead ends: 748 [2018-10-27 06:18:46,661 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 06:18:46,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2018-10-27 06:18:46,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 527. [2018-10-27 06:18:46,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2018-10-27 06:18:46,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 902 transitions. [2018-10-27 06:18:46,766 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 902 transitions. Word has length 206 [2018-10-27 06:18:46,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:18:46,768 INFO L481 AbstractCegarLoop]: Abstraction has 527 states and 902 transitions. [2018-10-27 06:18:46,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 06:18:46,768 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 902 transitions. [2018-10-27 06:18:46,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-27 06:18:46,783 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:18:46,785 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:18:46,786 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:18:46,786 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:18:46,786 INFO L82 PathProgramCache]: Analyzing trace with hash -360788856, now seen corresponding path program 1 times [2018-10-27 06:18:46,786 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:18:46,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:18:46,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:18:46,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:18:46,789 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:18:46,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:18:47,108 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:18:47,108 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:18:47,109 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 06:18:47,109 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:18:47,111 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 06:18:47,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 06:18:47,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 06:18:47,112 INFO L87 Difference]: Start difference. First operand 527 states and 902 transitions. Second operand 6 states. [2018-10-27 06:18:50,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:18:50,547 INFO L93 Difference]: Finished difference Result 1590 states and 2793 transitions. [2018-10-27 06:18:50,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 06:18:50,561 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 216 [2018-10-27 06:18:50,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:18:50,577 INFO L225 Difference]: With dead ends: 1590 [2018-10-27 06:18:50,577 INFO L226 Difference]: Without dead ends: 1069 [2018-10-27 06:18:50,580 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 06:18:50,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2018-10-27 06:18:50,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1024. [2018-10-27 06:18:50,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2018-10-27 06:18:50,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1746 transitions. [2018-10-27 06:18:50,689 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1746 transitions. Word has length 216 [2018-10-27 06:18:50,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:18:50,690 INFO L481 AbstractCegarLoop]: Abstraction has 1024 states and 1746 transitions. [2018-10-27 06:18:50,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 06:18:50,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1746 transitions. [2018-10-27 06:18:50,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-10-27 06:18:50,697 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:18:50,697 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:18:50,698 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:18:50,698 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:18:50,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1375336592, now seen corresponding path program 1 times [2018-10-27 06:18:50,698 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:18:50,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:18:50,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:18:50,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:18:50,700 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:18:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:18:50,970 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 06:18:51,210 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:18:51,211 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:18:51,211 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 06:18:51,211 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:18:51,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 06:18:51,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 06:18:51,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 06:18:51,213 INFO L87 Difference]: Start difference. First operand 1024 states and 1746 transitions. Second operand 5 states. [2018-10-27 06:18:54,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:18:54,345 INFO L93 Difference]: Finished difference Result 3166 states and 5674 transitions. [2018-10-27 06:18:54,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 06:18:54,346 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 217 [2018-10-27 06:18:54,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:18:54,362 INFO L225 Difference]: With dead ends: 3166 [2018-10-27 06:18:54,362 INFO L226 Difference]: Without dead ends: 2148 [2018-10-27 06:18:54,370 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 06:18:54,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2018-10-27 06:18:54,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 2105. [2018-10-27 06:18:54,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2105 states. [2018-10-27 06:18:54,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2105 states to 2105 states and 3422 transitions. [2018-10-27 06:18:54,456 INFO L78 Accepts]: Start accepts. Automaton has 2105 states and 3422 transitions. Word has length 217 [2018-10-27 06:18:54,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:18:54,456 INFO L481 AbstractCegarLoop]: Abstraction has 2105 states and 3422 transitions. [2018-10-27 06:18:54,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 06:18:54,457 INFO L276 IsEmpty]: Start isEmpty. Operand 2105 states and 3422 transitions. [2018-10-27 06:18:54,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-10-27 06:18:54,467 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:18:54,467 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:18:54,468 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:18:54,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:18:54,468 INFO L82 PathProgramCache]: Analyzing trace with hash 809544677, now seen corresponding path program 1 times [2018-10-27 06:18:54,468 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:18:54,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:18:54,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:18:54,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:18:54,470 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:18:54,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:18:54,862 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 06:18:54,862 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:18:54,862 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 06:18:54,863 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:18:54,863 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 06:18:54,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:18:54,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:18:54,864 INFO L87 Difference]: Start difference. First operand 2105 states and 3422 transitions. Second operand 3 states. [2018-10-27 06:18:56,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:18:56,509 INFO L93 Difference]: Finished difference Result 6108 states and 10330 transitions. [2018-10-27 06:18:56,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:18:56,510 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 219 [2018-10-27 06:18:56,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:18:56,536 INFO L225 Difference]: With dead ends: 6108 [2018-10-27 06:18:56,536 INFO L226 Difference]: Without dead ends: 4009 [2018-10-27 06:18:56,547 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 06:18:56,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4009 states. [2018-10-27 06:18:56,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4009 to 3973. [2018-10-27 06:18:56,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3973 states. [2018-10-27 06:18:56,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3973 states to 3973 states and 6514 transitions. [2018-10-27 06:18:56,684 INFO L78 Accepts]: Start accepts. Automaton has 3973 states and 6514 transitions. Word has length 219 [2018-10-27 06:18:56,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:18:56,685 INFO L481 AbstractCegarLoop]: Abstraction has 3973 states and 6514 transitions. [2018-10-27 06:18:56,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 06:18:56,685 INFO L276 IsEmpty]: Start isEmpty. Operand 3973 states and 6514 transitions. [2018-10-27 06:18:56,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-10-27 06:18:56,703 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:18:56,703 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:18:56,703 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:18:56,704 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:18:56,704 INFO L82 PathProgramCache]: Analyzing trace with hash -703936903, now seen corresponding path program 1 times [2018-10-27 06:18:56,704 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:18:56,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:18:56,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:18:56,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:18:56,705 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:18:56,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:18:57,124 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:18:57,124 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:18:57,124 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-27 06:18:57,125 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:18:57,125 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 06:18:57,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 06:18:57,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 06:18:57,126 INFO L87 Difference]: Start difference. First operand 3973 states and 6514 transitions. Second operand 7 states. [2018-10-27 06:18:59,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:18:59,293 INFO L93 Difference]: Finished difference Result 12096 states and 22014 transitions. [2018-10-27 06:18:59,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 06:18:59,296 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 225 [2018-10-27 06:18:59,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:18:59,364 INFO L225 Difference]: With dead ends: 12096 [2018-10-27 06:18:59,364 INFO L226 Difference]: Without dead ends: 8129 [2018-10-27 06:18:59,384 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-10-27 06:18:59,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8129 states. [2018-10-27 06:18:59,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8129 to 7942. [2018-10-27 06:18:59,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7942 states. [2018-10-27 06:18:59,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7942 states to 7942 states and 13503 transitions. [2018-10-27 06:18:59,693 INFO L78 Accepts]: Start accepts. Automaton has 7942 states and 13503 transitions. Word has length 225 [2018-10-27 06:18:59,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:18:59,693 INFO L481 AbstractCegarLoop]: Abstraction has 7942 states and 13503 transitions. [2018-10-27 06:18:59,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 06:18:59,694 INFO L276 IsEmpty]: Start isEmpty. Operand 7942 states and 13503 transitions. [2018-10-27 06:18:59,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-10-27 06:18:59,727 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:18:59,727 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:18:59,728 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:18:59,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:18:59,728 INFO L82 PathProgramCache]: Analyzing trace with hash -520261908, now seen corresponding path program 1 times [2018-10-27 06:18:59,728 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:18:59,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:18:59,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:18:59,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:18:59,729 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:18:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:18:59,993 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 06:19:00,407 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:19:00,408 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:19:00,408 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 06:19:00,408 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:19:00,409 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 06:19:00,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 06:19:00,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 06:19:00,410 INFO L87 Difference]: Start difference. First operand 7942 states and 13503 transitions. Second operand 6 states. [2018-10-27 06:19:03,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:19:03,803 INFO L93 Difference]: Finished difference Result 22960 states and 42530 transitions. [2018-10-27 06:19:03,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 06:19:03,804 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 230 [2018-10-27 06:19:03,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:19:03,900 INFO L225 Difference]: With dead ends: 22960 [2018-10-27 06:19:03,900 INFO L226 Difference]: Without dead ends: 15024 [2018-10-27 06:19:03,933 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 06:19:03,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15024 states. [2018-10-27 06:19:04,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15024 to 14866. [2018-10-27 06:19:04,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14866 states. [2018-10-27 06:19:04,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14866 states to 14866 states and 24364 transitions. [2018-10-27 06:19:04,439 INFO L78 Accepts]: Start accepts. Automaton has 14866 states and 24364 transitions. Word has length 230 [2018-10-27 06:19:04,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:19:04,439 INFO L481 AbstractCegarLoop]: Abstraction has 14866 states and 24364 transitions. [2018-10-27 06:19:04,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 06:19:04,439 INFO L276 IsEmpty]: Start isEmpty. Operand 14866 states and 24364 transitions. [2018-10-27 06:19:04,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-10-27 06:19:04,504 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:19:04,505 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:19:04,505 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:19:04,505 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:19:04,506 INFO L82 PathProgramCache]: Analyzing trace with hash -2136033641, now seen corresponding path program 1 times [2018-10-27 06:19:04,506 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:19:04,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:19:04,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:19:04,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:19:04,507 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:19:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:19:05,148 WARN L179 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-27 06:19:05,422 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-27 06:19:05,854 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-27 06:19:05,854 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:19:05,854 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 06:19:05,854 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:19:05,855 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 06:19:05,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 06:19:05,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-27 06:19:05,855 INFO L87 Difference]: Start difference. First operand 14866 states and 24364 transitions. Second operand 6 states. [2018-10-27 06:19:10,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:19:10,762 INFO L93 Difference]: Finished difference Result 31818 states and 52440 transitions. [2018-10-27 06:19:10,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-27 06:19:10,763 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 254 [2018-10-27 06:19:10,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:19:10,837 INFO L225 Difference]: With dead ends: 31818 [2018-10-27 06:19:10,837 INFO L226 Difference]: Without dead ends: 16918 [2018-10-27 06:19:10,885 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-27 06:19:10,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16918 states. [2018-10-27 06:19:11,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16918 to 16916. [2018-10-27 06:19:11,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16916 states. [2018-10-27 06:19:11,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16916 states to 16916 states and 26691 transitions. [2018-10-27 06:19:11,322 INFO L78 Accepts]: Start accepts. Automaton has 16916 states and 26691 transitions. Word has length 254 [2018-10-27 06:19:11,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:19:11,323 INFO L481 AbstractCegarLoop]: Abstraction has 16916 states and 26691 transitions. [2018-10-27 06:19:11,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 06:19:11,324 INFO L276 IsEmpty]: Start isEmpty. Operand 16916 states and 26691 transitions. [2018-10-27 06:19:11,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-10-27 06:19:11,391 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:19:11,391 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 06:19:11,392 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:19:11,392 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:19:11,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1208828973, now seen corresponding path program 1 times [2018-10-27 06:19:11,392 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:19:11,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:19:11,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:19:11,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:19:11,394 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:19:11,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:19:11,744 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:19:11,744 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:19:11,744 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 06:19:11,744 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:19:11,745 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 06:19:11,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:19:11,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:19:11,746 INFO L87 Difference]: Start difference. First operand 16916 states and 26691 transitions. Second operand 3 states. [2018-10-27 06:19:13,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:19:13,934 INFO L93 Difference]: Finished difference Result 46520 states and 75721 transitions. [2018-10-27 06:19:13,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:19:13,934 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 285 [2018-10-27 06:19:13,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:19:14,064 INFO L225 Difference]: With dead ends: 46520 [2018-10-27 06:19:14,064 INFO L226 Difference]: Without dead ends: 29610 [2018-10-27 06:19:14,118 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 06:19:14,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29610 states. [2018-10-27 06:19:14,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29610 to 29560. [2018-10-27 06:19:14,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29560 states. [2018-10-27 06:19:14,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29560 states to 29560 states and 45643 transitions. [2018-10-27 06:19:14,872 INFO L78 Accepts]: Start accepts. Automaton has 29560 states and 45643 transitions. Word has length 285 [2018-10-27 06:19:14,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:19:14,873 INFO L481 AbstractCegarLoop]: Abstraction has 29560 states and 45643 transitions. [2018-10-27 06:19:14,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 06:19:14,874 INFO L276 IsEmpty]: Start isEmpty. Operand 29560 states and 45643 transitions. [2018-10-27 06:19:14,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-10-27 06:19:14,949 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:19:14,950 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:19:14,950 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:19:14,950 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:19:14,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1586453435, now seen corresponding path program 1 times [2018-10-27 06:19:14,951 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:19:14,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:19:14,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:19:14,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:19:14,952 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:19:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:19:15,323 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 06:19:16,421 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 85 proven. 50 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 06:19:16,422 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:19:16,422 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:19:16,423 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 297 with the following transitions: [2018-10-27 06:19:16,425 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [52], [53], [57], [61], [65], [68], [71], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [174], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1109], [1111], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:19:16,489 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:19:16,490 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:19:17,777 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 06:19:17,779 INFO L272 AbstractInterpreter]: Visited 208 different actions 208 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-27 06:19:17,824 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:19:17,824 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 06:19:19,294 INFO L227 lantSequenceWeakener]: Weakened 282 states. On average, predicates are now at 73.79% of their original sizes. [2018-10-27 06:19:19,294 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 06:19:20,507 INFO L415 sIntCurrentIteration]: We unified 295 AI predicates to 295 [2018-10-27 06:19:20,508 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 06:19:20,509 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:19:20,509 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [10] total 23 [2018-10-27 06:19:20,509 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:19:20,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-27 06:19:20,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-27 06:19:20,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2018-10-27 06:19:20,511 INFO L87 Difference]: Start difference. First operand 29560 states and 45643 transitions. Second operand 15 states. [2018-10-27 06:19:30,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:19:30,552 INFO L93 Difference]: Finished difference Result 59324 states and 91543 transitions. [2018-10-27 06:19:30,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 06:19:30,552 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 296 [2018-10-27 06:19:30,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:19:30,679 INFO L225 Difference]: With dead ends: 59324 [2018-10-27 06:19:30,679 INFO L226 Difference]: Without dead ends: 29770 [2018-10-27 06:19:30,766 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 296 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2018-10-27 06:19:30,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29770 states. [2018-10-27 06:19:31,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29770 to 29768. [2018-10-27 06:19:31,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29768 states. [2018-10-27 06:19:31,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29768 states to 29768 states and 45861 transitions. [2018-10-27 06:19:31,483 INFO L78 Accepts]: Start accepts. Automaton has 29768 states and 45861 transitions. Word has length 296 [2018-10-27 06:19:31,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:19:31,484 INFO L481 AbstractCegarLoop]: Abstraction has 29768 states and 45861 transitions. [2018-10-27 06:19:31,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-27 06:19:31,484 INFO L276 IsEmpty]: Start isEmpty. Operand 29768 states and 45861 transitions. [2018-10-27 06:19:31,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-10-27 06:19:31,548 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:19:31,548 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:19:31,549 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:19:31,549 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:19:31,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1257760584, now seen corresponding path program 1 times [2018-10-27 06:19:31,549 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:19:31,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:19:31,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:19:31,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:19:31,551 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:19:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:19:31,880 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 06:19:32,244 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 121 proven. 38 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-10-27 06:19:32,245 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:19:32,245 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:19:32,245 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 309 with the following transitions: [2018-10-27 06:19:32,246 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [52], [53], [57], [61], [65], [68], [71], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [174], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1109], [1111], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:19:32,260 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:19:32,260 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:19:33,601 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 06:19:33,601 INFO L272 AbstractInterpreter]: Visited 212 different actions 418 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 06:19:33,609 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:19:33,609 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 06:19:34,576 INFO L227 lantSequenceWeakener]: Weakened 303 states. On average, predicates are now at 74.12% of their original sizes. [2018-10-27 06:19:34,576 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 06:19:34,981 INFO L415 sIntCurrentIteration]: We unified 307 AI predicates to 307 [2018-10-27 06:19:34,982 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 06:19:34,982 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:19:34,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [8] total 28 [2018-10-27 06:19:34,982 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:19:34,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-27 06:19:34,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-27 06:19:34,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2018-10-27 06:19:34,984 INFO L87 Difference]: Start difference. First operand 29768 states and 45861 transitions. Second operand 22 states. [2018-10-27 06:19:47,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:19:47,141 INFO L93 Difference]: Finished difference Result 59536 states and 91777 transitions. [2018-10-27 06:19:47,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 06:19:47,141 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 308 [2018-10-27 06:19:47,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:19:47,255 INFO L225 Difference]: With dead ends: 59536 [2018-10-27 06:19:47,255 INFO L226 Difference]: Without dead ends: 29982 [2018-10-27 06:19:47,311 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 316 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=198, Invalid=732, Unknown=0, NotChecked=0, Total=930 [2018-10-27 06:19:47,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29982 states. [2018-10-27 06:19:47,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29982 to 29979. [2018-10-27 06:19:47,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29979 states. [2018-10-27 06:19:47,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29979 states to 29979 states and 46090 transitions. [2018-10-27 06:19:47,911 INFO L78 Accepts]: Start accepts. Automaton has 29979 states and 46090 transitions. Word has length 308 [2018-10-27 06:19:47,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:19:47,912 INFO L481 AbstractCegarLoop]: Abstraction has 29979 states and 46090 transitions. [2018-10-27 06:19:47,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-27 06:19:47,912 INFO L276 IsEmpty]: Start isEmpty. Operand 29979 states and 46090 transitions. [2018-10-27 06:19:47,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-10-27 06:19:47,970 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:19:47,971 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:19:47,971 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:19:47,971 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:19:47,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1083232552, now seen corresponding path program 1 times [2018-10-27 06:19:47,972 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:19:47,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:19:47,973 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:19:47,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:19:47,973 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:19:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:19:48,561 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 161 proven. 50 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-10-27 06:19:48,561 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:19:48,562 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:19:48,562 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 332 with the following transitions: [2018-10-27 06:19:48,562 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [52], [53], [57], [61], [64], [65], [68], [71], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1109], [1111], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:19:48,571 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:19:48,571 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:19:49,340 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 06:19:49,341 INFO L272 AbstractInterpreter]: Visited 212 different actions 423 times. Merged at 7 different actions 10 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-27 06:19:49,342 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:19:49,342 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 06:19:50,125 INFO L227 lantSequenceWeakener]: Weakened 326 states. On average, predicates are now at 76.31% of their original sizes. [2018-10-27 06:19:50,125 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 06:19:50,637 INFO L415 sIntCurrentIteration]: We unified 330 AI predicates to 330 [2018-10-27 06:19:50,638 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 06:19:50,638 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:19:50,638 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-10-27 06:19:50,639 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:19:50,639 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-27 06:19:50,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-27 06:19:50,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2018-10-27 06:19:50,640 INFO L87 Difference]: Start difference. First operand 29979 states and 46090 transitions. Second operand 18 states. [2018-10-27 06:20:20,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:20:20,158 INFO L93 Difference]: Finished difference Result 82911 states and 127779 transitions. [2018-10-27 06:20:20,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-27 06:20:20,158 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 331 [2018-10-27 06:20:20,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:20:20,378 INFO L225 Difference]: With dead ends: 82911 [2018-10-27 06:20:20,379 INFO L226 Difference]: Without dead ends: 53357 [2018-10-27 06:20:20,457 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 336 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2018-10-27 06:20:20,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53357 states. [2018-10-27 06:20:21,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53357 to 53097. [2018-10-27 06:20:21,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53097 states. [2018-10-27 06:20:22,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53097 states to 53097 states and 77833 transitions. [2018-10-27 06:20:22,032 INFO L78 Accepts]: Start accepts. Automaton has 53097 states and 77833 transitions. Word has length 331 [2018-10-27 06:20:22,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:20:22,032 INFO L481 AbstractCegarLoop]: Abstraction has 53097 states and 77833 transitions. [2018-10-27 06:20:22,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-27 06:20:22,033 INFO L276 IsEmpty]: Start isEmpty. Operand 53097 states and 77833 transitions. [2018-10-27 06:20:22,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2018-10-27 06:20:22,146 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:20:22,146 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:20:22,147 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:20:22,147 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:20:22,147 INFO L82 PathProgramCache]: Analyzing trace with hash -530087424, now seen corresponding path program 1 times [2018-10-27 06:20:22,147 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:20:22,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:20:22,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:20:22,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:20:22,149 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:20:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:20:22,719 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 148 proven. 51 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-10-27 06:20:22,720 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:20:22,720 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:20:22,720 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 356 with the following transitions: [2018-10-27 06:20:22,721 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [44], [45], [49], [52], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1109], [1111], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:20:22,727 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:20:22,727 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:20:23,885 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 06:20:23,885 INFO L272 AbstractInterpreter]: Visited 212 different actions 635 times. Merged at 7 different actions 21 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-27 06:20:23,895 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:20:23,895 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 06:20:24,718 INFO L227 lantSequenceWeakener]: Weakened 352 states. On average, predicates are now at 75.42% of their original sizes. [2018-10-27 06:20:24,719 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 06:20:25,062 INFO L415 sIntCurrentIteration]: We unified 354 AI predicates to 354 [2018-10-27 06:20:25,062 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 06:20:25,062 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:20:25,063 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [9] total 30 [2018-10-27 06:20:25,063 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:20:25,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-27 06:20:25,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-27 06:20:25,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2018-10-27 06:20:25,064 INFO L87 Difference]: Start difference. First operand 53097 states and 77833 transitions. Second operand 23 states. [2018-10-27 06:20:53,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:20:53,239 INFO L93 Difference]: Finished difference Result 135421 states and 196876 transitions. [2018-10-27 06:20:53,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-27 06:20:53,239 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 355 [2018-10-27 06:20:53,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:20:53,569 INFO L225 Difference]: With dead ends: 135421 [2018-10-27 06:20:53,569 INFO L226 Difference]: Without dead ends: 82749 [2018-10-27 06:20:53,699 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 361 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=195, Invalid=675, Unknown=0, NotChecked=0, Total=870 [2018-10-27 06:20:53,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82749 states. [2018-10-27 06:20:55,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82749 to 82505. [2018-10-27 06:20:55,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82505 states. [2018-10-27 06:20:55,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82505 states to 82505 states and 116980 transitions. [2018-10-27 06:20:55,872 INFO L78 Accepts]: Start accepts. Automaton has 82505 states and 116980 transitions. Word has length 355 [2018-10-27 06:20:55,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:20:55,872 INFO L481 AbstractCegarLoop]: Abstraction has 82505 states and 116980 transitions. [2018-10-27 06:20:55,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-27 06:20:55,872 INFO L276 IsEmpty]: Start isEmpty. Operand 82505 states and 116980 transitions. [2018-10-27 06:20:56,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-10-27 06:20:56,020 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:20:56,020 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 06:20:56,021 INFO L424 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:20:56,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:20:56,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1805754513, now seen corresponding path program 1 times [2018-10-27 06:20:56,021 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:20:56,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:20:56,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:20:56,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:20:56,022 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:20:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:20:56,706 WARN L179 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 06:20:57,020 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 203 proven. 38 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-10-27 06:20:57,020 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:20:57,020 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:20:57,021 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 358 with the following transitions: [2018-10-27 06:20:57,021 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [52], [53], [57], [61], [65], [68], [71], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [127], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1109], [1111], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:20:57,029 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:20:57,029 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:20:58,179 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:20:58,179 INFO L272 AbstractInterpreter]: Visited 214 different actions 641 times. Merged at 8 different actions 23 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-27 06:20:58,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:20:58,188 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:20:58,188 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:20:58,188 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 06:20:58,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:20:58,197 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:20:58,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:20:58,565 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:20:59,259 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 180 proven. 8 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2018-10-27 06:20:59,259 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:21:00,914 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 180 proven. 8 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2018-10-27 06:21:00,939 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 06:21:00,939 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-27 06:21:00,939 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 06:21:00,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 06:21:00,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 06:21:00,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-10-27 06:21:00,941 INFO L87 Difference]: Start difference. First operand 82505 states and 116980 transitions. Second operand 9 states. [2018-10-27 06:21:02,108 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-27 06:21:11,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:21:11,526 INFO L93 Difference]: Finished difference Result 266036 states and 406725 transitions. [2018-10-27 06:21:11,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-27 06:21:11,527 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 357 [2018-10-27 06:21:11,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:21:12,633 INFO L225 Difference]: With dead ends: 266036 [2018-10-27 06:21:12,633 INFO L226 Difference]: Without dead ends: 183503 [2018-10-27 06:21:12,881 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 769 GetRequests, 727 SyntacticMatches, 7 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=291, Invalid=1041, Unknown=0, NotChecked=0, Total=1332 [2018-10-27 06:21:13,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183503 states. [2018-10-27 06:21:19,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183503 to 178165. [2018-10-27 06:21:19,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178165 states. [2018-10-27 06:21:19,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178165 states to 178165 states and 247205 transitions. [2018-10-27 06:21:19,971 INFO L78 Accepts]: Start accepts. Automaton has 178165 states and 247205 transitions. Word has length 357 [2018-10-27 06:21:19,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:21:19,971 INFO L481 AbstractCegarLoop]: Abstraction has 178165 states and 247205 transitions. [2018-10-27 06:21:19,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 06:21:19,971 INFO L276 IsEmpty]: Start isEmpty. Operand 178165 states and 247205 transitions. [2018-10-27 06:21:20,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-10-27 06:21:20,179 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:21:20,179 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:21:20,179 INFO L424 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:21:20,180 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:21:20,180 INFO L82 PathProgramCache]: Analyzing trace with hash 931026669, now seen corresponding path program 1 times [2018-10-27 06:21:20,180 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:21:20,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:21:20,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:21:20,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:21:20,181 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:21:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:21:20,934 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 219 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:21:20,934 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:21:20,935 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:21:20,935 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 371 with the following transitions: [2018-10-27 06:21:20,935 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [256], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1109], [1111], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:21:20,941 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:21:20,941 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:21:25,893 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 06:21:25,893 INFO L272 AbstractInterpreter]: Visited 210 different actions 414 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 06:21:25,906 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:21:25,906 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 06:21:26,889 INFO L227 lantSequenceWeakener]: Weakened 367 states. On average, predicates are now at 74.49% of their original sizes. [2018-10-27 06:21:26,889 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 06:21:27,112 INFO L415 sIntCurrentIteration]: We unified 369 AI predicates to 369 [2018-10-27 06:21:27,113 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 06:21:27,113 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:21:27,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-10-27 06:21:27,113 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:21:27,114 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-27 06:21:27,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-27 06:21:27,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2018-10-27 06:21:27,115 INFO L87 Difference]: Start difference. First operand 178165 states and 247205 transitions. Second operand 17 states. [2018-10-27 06:21:52,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:21:52,984 INFO L93 Difference]: Finished difference Result 366825 states and 508444 transitions. [2018-10-27 06:21:52,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-27 06:21:52,984 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 370 [2018-10-27 06:21:52,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:21:53,658 INFO L225 Difference]: With dead ends: 366825 [2018-10-27 06:21:53,659 INFO L226 Difference]: Without dead ends: 189084 [2018-10-27 06:21:53,885 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 377 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=456, Unknown=0, NotChecked=0, Total=600 [2018-10-27 06:21:54,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189084 states. [2018-10-27 06:21:57,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189084 to 189067. [2018-10-27 06:21:57,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189067 states. [2018-10-27 06:21:57,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189067 states to 189067 states and 259432 transitions. [2018-10-27 06:21:57,599 INFO L78 Accepts]: Start accepts. Automaton has 189067 states and 259432 transitions. Word has length 370 [2018-10-27 06:21:57,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:21:57,599 INFO L481 AbstractCegarLoop]: Abstraction has 189067 states and 259432 transitions. [2018-10-27 06:21:57,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-27 06:21:57,600 INFO L276 IsEmpty]: Start isEmpty. Operand 189067 states and 259432 transitions. [2018-10-27 06:21:57,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2018-10-27 06:21:57,776 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:21:57,776 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:21:57,777 INFO L424 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:21:57,777 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:21:57,777 INFO L82 PathProgramCache]: Analyzing trace with hash 2036941098, now seen corresponding path program 1 times [2018-10-27 06:21:57,777 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:21:57,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:21:57,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:21:57,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:21:57,778 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:21:57,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:21:59,033 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 06:21:59,515 WARN L179 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-27 06:22:00,149 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 183 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:22:00,149 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:22:00,149 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:22:00,149 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 373 with the following transitions: [2018-10-27 06:22:00,150 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [616], [621], [623], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1109], [1111], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:22:00,155 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:22:00,155 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-27 06:22:01,863 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-27 06:22:01,864 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-27 06:22:01,864 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 06:22:01,864 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:22:01,865 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 06:22:01,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:22:01,873 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:22:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:22:02,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:22:02,143 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-27 06:22:02,344 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 06:22:02,344 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 06:22:02,349 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 06:22:02,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 06:22:02 BoogieIcfgContainer [2018-10-27 06:22:02,350 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 06:22:02,351 INFO L168 Benchmark]: Toolchain (without parser) took 207215.66 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-27 06:22:02,353 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 06:22:02,353 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1180.17 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-27 06:22:02,354 INFO L168 Benchmark]: Boogie Procedure Inliner took 293.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 730.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -863.5 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-27 06:22:02,355 INFO L168 Benchmark]: Boogie Preprocessor took 125.60 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-10-27 06:22:02,360 INFO L168 Benchmark]: RCFGBuilder took 4849.22 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 248.0 MB). Peak memory consumption was 248.0 MB. Max. memory is 7.1 GB. [2018-10-27 06:22:02,361 INFO L168 Benchmark]: TraceAbstraction took 200762.45 ms. Allocated memory was 2.3 GB in the beginning and 4.7 GB in the end (delta: 2.4 GB). Free memory was 1.9 GB in the beginning and 2.9 GB in the end (delta: -973.6 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-27 06:22:02,369 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1180.17 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 293.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 730.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -863.5 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.60 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4849.22 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 248.0 MB). Peak memory consumption was 248.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 200762.45 ms. Allocated memory was 2.3 GB in the beginning and 4.7 GB in the end (delta: 2.4 GB). Free memory was 1.9 GB in the beginning and 2.9 GB in the end (delta: -973.6 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1632]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1632). Cancelled while BasicCegarLoop was analyzing trace of length 373 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 10 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 200.6s OverallTime, 15 OverallIterations, 6 TraceHistogramMax, 144.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3086 SDtfs, 24510 SDslu, 4382 SDs, 0 SdLazy, 21115 SolverSat, 3728 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 70.8s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 2517 GetRequests, 2318 SyntacticMatches, 13 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 8.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=189067occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.5s AbstIntTime, 7 AbstIntIterations, 5 AbstIntStrong, 0.9989410775270503 AbsIntWeakeningRatio, 0.2338368580060423 AbsIntAvgWeakeningVarsNumRemoved, 57.28700906344411 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 18.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 6606 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 10.4s InterpolantComputationTime, 4226 NumberOfCodeBlocks, 4226 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 4567 ConstructedInterpolants, 0 QuantifiedInterpolants, 4376535 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1647 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 16 InterpolantComputations, 8 PerfectInterpolantSequences, 1915/2160 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown