java -Xss4m -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label36_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-21 23:30:30,110 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-21 23:30:30,112 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-21 23:30:30,125 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-21 23:30:30,126 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-21 23:30:30,127 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-21 23:30:30,128 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-21 23:30:30,132 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-21 23:30:30,133 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-21 23:30:30,135 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-21 23:30:30,136 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-21 23:30:30,136 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-21 23:30:30,137 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-21 23:30:30,140 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-21 23:30:30,141 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-21 23:30:30,142 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-21 23:30:30,142 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-21 23:30:30,146 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-21 23:30:30,155 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-21 23:30:30,157 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-21 23:30:30,158 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-21 23:30:30,159 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-21 23:30:30,160 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-21 23:30:30,163 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-21 23:30:30,164 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-21 23:30:30,164 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-21 23:30:30,165 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-21 23:30:30,166 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-21 23:30:30,166 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-21 23:30:30,170 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-21 23:30:30,171 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-21 23:30:30,171 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-21 23:30:30,171 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-21 23:30:30,171 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-21 23:30:30,172 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-21 23:30:30,174 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-21 23:30:30,175 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-07-21 23:30:30,193 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-21 23:30:30,194 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-21 23:30:30,194 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-21 23:30:30,194 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-21 23:30:30,195 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-21 23:30:30,195 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-21 23:30:30,195 INFO L133 SettingsManager]: * Use SBE=true [2018-07-21 23:30:30,196 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-21 23:30:30,196 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-21 23:30:30,196 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-21 23:30:30,196 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-21 23:30:30,196 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-21 23:30:30,196 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-21 23:30:30,197 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-21 23:30:30,198 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-21 23:30:30,198 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-21 23:30:30,198 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-21 23:30:30,198 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-21 23:30:30,199 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-21 23:30:30,199 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 23:30:30,199 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-21 23:30:30,199 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-21 23:30:30,199 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-21 23:30:30,199 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-21 23:30:30,200 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-21 23:30:30,200 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-21 23:30:30,200 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-21 23:30:30,200 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-21 23:30:30,200 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-21 23:30:30,255 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-21 23:30:30,271 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-21 23:30:30,276 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-21 23:30:30,278 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-21 23:30:30,278 INFO L276 PluginConnector]: CDTParser initialized [2018-07-21 23:30:30,279 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label36_false-unreach-call_false-termination.c [2018-07-21 23:30:30,620 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/d99bc7943/d4c291876f45487381b81c83af3a9599/FLAGe14126d2a [2018-07-21 23:30:31,183 INFO L276 CDTParser]: Found 1 translation units. [2018-07-21 23:30:31,184 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label36_false-unreach-call_false-termination.c [2018-07-21 23:30:31,247 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/d99bc7943/d4c291876f45487381b81c83af3a9599/FLAGe14126d2a [2018-07-21 23:30:31,269 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/d99bc7943/d4c291876f45487381b81c83af3a9599 [2018-07-21 23:30:31,281 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-21 23:30:31,287 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-21 23:30:31,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-21 23:30:31,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-21 23:30:31,297 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-21 23:30:31,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:30:31" (1/1) ... [2018-07-21 23:30:31,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e0093ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:30:31, skipping insertion in model container [2018-07-21 23:30:31,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:30:31" (1/1) ... [2018-07-21 23:30:31,677 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-21 23:30:32,911 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 23:30:32,938 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-21 23:30:33,845 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 23:30:33,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:30:33 WrapperNode [2018-07-21 23:30:33,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-21 23:30:34,000 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-21 23:30:34,000 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-21 23:30:34,000 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-21 23:30:34,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:30:33" (1/1) ... [2018-07-21 23:30:34,089 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:30:33" (1/1) ... [2018-07-21 23:30:34,274 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-21 23:30:34,275 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-21 23:30:34,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-21 23:30:34,275 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-21 23:30:34,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:30:33" (1/1) ... [2018-07-21 23:30:34,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:30:33" (1/1) ... [2018-07-21 23:30:34,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:30:33" (1/1) ... [2018-07-21 23:30:34,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:30:33" (1/1) ... [2018-07-21 23:30:34,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:30:33" (1/1) ... [2018-07-21 23:30:35,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:30:33" (1/1) ... [2018-07-21 23:30:35,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:30:33" (1/1) ... [2018-07-21 23:30:35,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-21 23:30:35,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-21 23:30:35,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-21 23:30:35,192 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-21 23:30:35,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:30:33" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-21 23:30:35,264 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-21 23:30:35,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-21 23:30:35,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-21 23:30:44,715 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-21 23:30:44,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:30:44 BoogieIcfgContainer [2018-07-21 23:30:44,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-21 23:30:44,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-21 23:30:44,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-21 23:30:44,721 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-21 23:30:44,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:30:31" (1/3) ... [2018-07-21 23:30:44,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f7d503d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:30:44, skipping insertion in model container [2018-07-21 23:30:44,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:30:33" (2/3) ... [2018-07-21 23:30:44,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f7d503d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:30:44, skipping insertion in model container [2018-07-21 23:30:44,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:30:44" (3/3) ... [2018-07-21 23:30:44,726 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label36_false-unreach-call_false-termination.c [2018-07-21 23:30:44,737 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-21 23:30:44,752 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-21 23:30:44,836 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-21 23:30:44,837 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-21 23:30:44,837 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-21 23:30:44,838 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-21 23:30:44,838 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-21 23:30:44,838 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-21 23:30:44,838 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-21 23:30:44,838 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-21 23:30:44,838 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-21 23:30:44,892 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states. [2018-07-21 23:30:44,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2018-07-21 23:30:44,952 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:30:44,954 INFO L358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 23:30:44,955 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:30:44,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1536262125, now seen corresponding path program 1 times [2018-07-21 23:30:44,964 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:30:44,964 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:30:45,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:30:45,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:30:45,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:30:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:30:47,397 WARN L169 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-07-21 23:30:47,826 WARN L169 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-07-21 23:30:48,647 WARN L169 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2018-07-21 23:30:51,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 23:30:51,358 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:30:51,358 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-21 23:30:51,363 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 23:30:51,374 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 23:30:51,375 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-21 23:30:51,377 INFO L87 Difference]: Start difference. First operand 886 states. Second operand 6 states. [2018-07-21 23:31:06,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:31:06,592 INFO L93 Difference]: Finished difference Result 4242 states and 8309 transitions. [2018-07-21 23:31:06,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-21 23:31:06,593 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 776 [2018-07-21 23:31:06,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:31:06,660 INFO L225 Difference]: With dead ends: 4242 [2018-07-21 23:31:06,660 INFO L226 Difference]: Without dead ends: 3343 [2018-07-21 23:31:06,669 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 8 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-21 23:31:06,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2018-07-21 23:31:06,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3340. [2018-07-21 23:31:06,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3340 states. [2018-07-21 23:31:06,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3340 states to 3340 states and 4356 transitions. [2018-07-21 23:31:06,891 INFO L78 Accepts]: Start accepts. Automaton has 3340 states and 4356 transitions. Word has length 776 [2018-07-21 23:31:06,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:31:06,895 INFO L471 AbstractCegarLoop]: Abstraction has 3340 states and 4356 transitions. [2018-07-21 23:31:06,895 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 23:31:06,895 INFO L276 IsEmpty]: Start isEmpty. Operand 3340 states and 4356 transitions. [2018-07-21 23:31:06,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 800 [2018-07-21 23:31:06,931 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:31:06,933 INFO L358 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 23:31:06,933 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:31:06,934 INFO L82 PathProgramCache]: Analyzing trace with hash -954432646, now seen corresponding path program 1 times [2018-07-21 23:31:06,934 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:31:06,934 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:31:06,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:31:06,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:31:06,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:31:07,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:31:08,708 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 23:31:08,709 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:31:08,709 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-21 23:31:08,712 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 23:31:08,712 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 23:31:08,712 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 23:31:08,713 INFO L87 Difference]: Start difference. First operand 3340 states and 4356 transitions. Second operand 4 states. [2018-07-21 23:31:15,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:31:15,340 INFO L93 Difference]: Finished difference Result 10773 states and 14821 transitions. [2018-07-21 23:31:15,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 23:31:15,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 799 [2018-07-21 23:31:15,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:31:15,379 INFO L225 Difference]: With dead ends: 10773 [2018-07-21 23:31:15,380 INFO L226 Difference]: Without dead ends: 8254 [2018-07-21 23:31:15,385 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 23:31:15,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8254 states. [2018-07-21 23:31:15,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8254 to 8254. [2018-07-21 23:31:15,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8254 states. [2018-07-21 23:31:15,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8254 states to 8254 states and 10764 transitions. [2018-07-21 23:31:15,600 INFO L78 Accepts]: Start accepts. Automaton has 8254 states and 10764 transitions. Word has length 799 [2018-07-21 23:31:15,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:31:15,602 INFO L471 AbstractCegarLoop]: Abstraction has 8254 states and 10764 transitions. [2018-07-21 23:31:15,602 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-21 23:31:15,602 INFO L276 IsEmpty]: Start isEmpty. Operand 8254 states and 10764 transitions. [2018-07-21 23:31:15,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 812 [2018-07-21 23:31:15,642 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:31:15,642 INFO L358 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 23:31:15,642 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:31:15,643 INFO L82 PathProgramCache]: Analyzing trace with hash 361164454, now seen corresponding path program 1 times [2018-07-21 23:31:15,643 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:31:15,643 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:31:15,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:31:15,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:31:15,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:31:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:31:16,015 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-07-21 23:31:16,383 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 34 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-21 23:31:16,384 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 23:31:16,384 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-21 23:31:16,401 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:31:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:31:16,820 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 23:31:17,133 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-07-21 23:31:17,154 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 23:31:17,155 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-07-21 23:31:17,156 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-21 23:31:17,156 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-21 23:31:17,156 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-21 23:31:17,156 INFO L87 Difference]: Start difference. First operand 8254 states and 10764 transitions. Second operand 5 states. [2018-07-21 23:31:25,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:31:25,610 INFO L93 Difference]: Finished difference Result 36162 states and 52188 transitions. [2018-07-21 23:31:25,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 23:31:25,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 811 [2018-07-21 23:31:25,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:31:25,717 INFO L225 Difference]: With dead ends: 36162 [2018-07-21 23:31:25,717 INFO L226 Difference]: Without dead ends: 28729 [2018-07-21 23:31:25,730 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 816 GetRequests, 810 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-07-21 23:31:25,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28729 states. [2018-07-21 23:31:26,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28729 to 27910. [2018-07-21 23:31:26,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27910 states. [2018-07-21 23:31:26,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27910 states to 27910 states and 35231 transitions. [2018-07-21 23:31:26,412 INFO L78 Accepts]: Start accepts. Automaton has 27910 states and 35231 transitions. Word has length 811 [2018-07-21 23:31:26,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:31:26,413 INFO L471 AbstractCegarLoop]: Abstraction has 27910 states and 35231 transitions. [2018-07-21 23:31:26,413 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-21 23:31:26,413 INFO L276 IsEmpty]: Start isEmpty. Operand 27910 states and 35231 transitions. [2018-07-21 23:31:26,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 879 [2018-07-21 23:31:26,471 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:31:26,472 INFO L358 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 23:31:26,472 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:31:26,474 INFO L82 PathProgramCache]: Analyzing trace with hash -743908499, now seen corresponding path program 1 times [2018-07-21 23:31:26,474 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:31:26,474 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:31:26,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:31:26,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:31:26,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:31:26,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:31:27,259 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-07-21 23:31:27,260 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:31:27,260 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-21 23:31:27,260 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 23:31:27,261 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 23:31:27,261 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 23:31:27,261 INFO L87 Difference]: Start difference. First operand 27910 states and 35231 transitions. Second operand 4 states. [2018-07-21 23:31:32,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:31:32,847 INFO L93 Difference]: Finished difference Result 91854 states and 119748 transitions. [2018-07-21 23:31:32,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 23:31:32,847 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 878 [2018-07-21 23:31:32,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:31:32,955 INFO L225 Difference]: With dead ends: 91854 [2018-07-21 23:31:32,955 INFO L226 Difference]: Without dead ends: 53261 [2018-07-21 23:31:33,004 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 23:31:33,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53261 states. [2018-07-21 23:31:33,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53261 to 52442. [2018-07-21 23:31:33,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52442 states. [2018-07-21 23:31:33,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52442 states to 52442 states and 55928 transitions. [2018-07-21 23:31:33,990 INFO L78 Accepts]: Start accepts. Automaton has 52442 states and 55928 transitions. Word has length 878 [2018-07-21 23:31:33,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:31:33,991 INFO L471 AbstractCegarLoop]: Abstraction has 52442 states and 55928 transitions. [2018-07-21 23:31:33,991 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-21 23:31:33,991 INFO L276 IsEmpty]: Start isEmpty. Operand 52442 states and 55928 transitions. [2018-07-21 23:31:34,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 915 [2018-07-21 23:31:34,069 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:31:34,070 INFO L358 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 23:31:34,070 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:31:34,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1418797128, now seen corresponding path program 1 times [2018-07-21 23:31:34,071 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:31:34,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:31:34,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:31:34,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:31:34,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:31:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:31:35,838 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-07-21 23:31:35,839 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:31:35,882 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-21 23:31:35,883 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 23:31:35,884 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 23:31:35,884 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 23:31:35,884 INFO L87 Difference]: Start difference. First operand 52442 states and 55928 transitions. Second operand 4 states. [2018-07-21 23:31:39,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:31:39,436 INFO L93 Difference]: Finished difference Result 157313 states and 168543 transitions. [2018-07-21 23:31:39,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 23:31:39,436 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 914 [2018-07-21 23:31:39,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:31:39,618 INFO L225 Difference]: With dead ends: 157313 [2018-07-21 23:31:39,618 INFO L226 Difference]: Without dead ends: 104048 [2018-07-21 23:31:39,677 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 23:31:39,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104048 states. [2018-07-21 23:31:43,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104048 to 81104. [2018-07-21 23:31:43,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81104 states. [2018-07-21 23:31:43,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81104 states to 81104 states and 86355 transitions. [2018-07-21 23:31:43,380 INFO L78 Accepts]: Start accepts. Automaton has 81104 states and 86355 transitions. Word has length 914 [2018-07-21 23:31:43,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:31:43,381 INFO L471 AbstractCegarLoop]: Abstraction has 81104 states and 86355 transitions. [2018-07-21 23:31:43,382 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-21 23:31:43,383 INFO L276 IsEmpty]: Start isEmpty. Operand 81104 states and 86355 transitions. [2018-07-21 23:31:43,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1008 [2018-07-21 23:31:43,452 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:31:43,453 INFO L358 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 23:31:43,453 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:31:43,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1882431011, now seen corresponding path program 1 times [2018-07-21 23:31:43,454 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:31:43,454 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:31:43,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:31:43,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:31:43,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:31:43,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:31:44,144 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2018-07-21 23:31:44,145 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:31:44,145 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 23:31:44,146 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 23:31:44,146 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 23:31:44,146 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 23:31:44,147 INFO L87 Difference]: Start difference. First operand 81104 states and 86355 transitions. Second operand 4 states. [2018-07-21 23:31:47,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:31:47,648 INFO L93 Difference]: Finished difference Result 212984 states and 226840 transitions. [2018-07-21 23:31:47,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 23:31:47,649 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1007 [2018-07-21 23:31:47,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:31:47,763 INFO L225 Difference]: With dead ends: 212984 [2018-07-21 23:31:47,763 INFO L226 Difference]: Without dead ends: 132701 [2018-07-21 23:31:47,805 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 23:31:47,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132701 states. [2018-07-21 23:31:48,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132701 to 130244. [2018-07-21 23:31:48,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130244 states. [2018-07-21 23:31:48,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130244 states to 130244 states and 136245 transitions. [2018-07-21 23:31:48,947 INFO L78 Accepts]: Start accepts. Automaton has 130244 states and 136245 transitions. Word has length 1007 [2018-07-21 23:31:48,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:31:48,947 INFO L471 AbstractCegarLoop]: Abstraction has 130244 states and 136245 transitions. [2018-07-21 23:31:48,947 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-21 23:31:48,948 INFO L276 IsEmpty]: Start isEmpty. Operand 130244 states and 136245 transitions. [2018-07-21 23:31:48,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1119 [2018-07-21 23:31:48,996 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:31:48,996 INFO L358 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 23:31:48,997 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:31:48,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1377920684, now seen corresponding path program 1 times [2018-07-21 23:31:48,997 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:31:48,997 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:31:48,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:31:48,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:31:48,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:31:49,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:31:51,630 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2018-07-21 23:31:51,631 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:31:51,631 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 23:31:51,631 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 23:31:51,631 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 23:31:51,632 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 23:31:51,632 INFO L87 Difference]: Start difference. First operand 130244 states and 136245 transitions. Second operand 4 states. [2018-07-21 23:31:54,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:31:54,972 INFO L93 Difference]: Finished difference Result 259667 states and 271665 transitions. [2018-07-21 23:31:54,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 23:31:54,973 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1118 [2018-07-21 23:31:54,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:31:55,129 INFO L225 Difference]: With dead ends: 259667 [2018-07-21 23:31:55,130 INFO L226 Difference]: Without dead ends: 130244 [2018-07-21 23:31:55,196 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 23:31:55,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130244 states. [2018-07-21 23:31:56,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130244 to 130244. [2018-07-21 23:31:56,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130244 states. [2018-07-21 23:31:56,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130244 states to 130244 states and 135378 transitions. [2018-07-21 23:31:56,800 INFO L78 Accepts]: Start accepts. Automaton has 130244 states and 135378 transitions. Word has length 1118 [2018-07-21 23:31:56,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:31:56,800 INFO L471 AbstractCegarLoop]: Abstraction has 130244 states and 135378 transitions. [2018-07-21 23:31:56,801 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-21 23:31:56,801 INFO L276 IsEmpty]: Start isEmpty. Operand 130244 states and 135378 transitions. [2018-07-21 23:31:56,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1292 [2018-07-21 23:31:56,854 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:31:56,855 INFO L358 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 23:31:56,855 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:31:56,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1372316264, now seen corresponding path program 1 times [2018-07-21 23:31:56,856 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:31:56,856 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:31:56,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:31:56,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:31:56,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:31:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:31:58,566 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 573 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2018-07-21 23:31:58,566 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:31:58,567 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-21 23:31:58,567 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 23:31:58,567 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 23:31:58,568 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 23:31:58,568 INFO L87 Difference]: Start difference. First operand 130244 states and 135378 transitions. Second operand 4 states. [2018-07-21 23:32:02,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:32:02,782 INFO L93 Difference]: Finished difference Result 261305 states and 271591 transitions. [2018-07-21 23:32:02,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 23:32:02,782 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1291 [2018-07-21 23:32:02,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:32:02,907 INFO L225 Difference]: With dead ends: 261305 [2018-07-21 23:32:02,907 INFO L226 Difference]: Without dead ends: 131882 [2018-07-21 23:32:02,967 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 23:32:03,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131882 states. [2018-07-21 23:32:04,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131882 to 126149. [2018-07-21 23:32:04,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126149 states. [2018-07-21 23:32:04,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126149 states to 126149 states and 129560 transitions. [2018-07-21 23:32:04,883 INFO L78 Accepts]: Start accepts. Automaton has 126149 states and 129560 transitions. Word has length 1291 [2018-07-21 23:32:04,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:32:04,884 INFO L471 AbstractCegarLoop]: Abstraction has 126149 states and 129560 transitions. [2018-07-21 23:32:04,884 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-21 23:32:04,884 INFO L276 IsEmpty]: Start isEmpty. Operand 126149 states and 129560 transitions. [2018-07-21 23:32:04,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1299 [2018-07-21 23:32:04,933 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:32:04,934 INFO L358 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 23:32:04,934 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:32:04,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1381527027, now seen corresponding path program 1 times [2018-07-21 23:32:04,935 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:32:04,935 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:32:04,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:32:04,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:32:04,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:32:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:32:10,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1007 backedges. 629 proven. 263 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-07-21 23:32:10,291 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 23:32:10,291 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-21 23:32:10,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:32:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:32:10,679 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 23:32:12,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1007 backedges. 520 proven. 0 refuted. 0 times theorem prover too weak. 487 trivial. 0 not checked. [2018-07-21 23:32:12,185 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 23:32:12,186 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-07-21 23:32:12,188 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-21 23:32:12,190 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-21 23:32:12,190 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-07-21 23:32:12,191 INFO L87 Difference]: Start difference. First operand 126149 states and 129560 transitions. Second operand 8 states. [2018-07-21 23:32:21,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:32:21,329 INFO L93 Difference]: Finished difference Result 246758 states and 253531 transitions. [2018-07-21 23:32:21,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-21 23:32:21,373 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1298 [2018-07-21 23:32:21,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:32:21,548 INFO L225 Difference]: With dead ends: 246758 [2018-07-21 23:32:21,549 INFO L226 Difference]: Without dead ends: 121430 [2018-07-21 23:32:21,583 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 1311 GetRequests, 1301 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2018-07-21 23:32:21,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121430 states. [2018-07-21 23:32:23,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121430 to 107306. [2018-07-21 23:32:23,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107306 states. [2018-07-21 23:32:23,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107306 states to 107306 states and 109169 transitions. [2018-07-21 23:32:23,502 INFO L78 Accepts]: Start accepts. Automaton has 107306 states and 109169 transitions. Word has length 1298 [2018-07-21 23:32:23,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:32:23,503 INFO L471 AbstractCegarLoop]: Abstraction has 107306 states and 109169 transitions. [2018-07-21 23:32:23,503 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-21 23:32:23,504 INFO L276 IsEmpty]: Start isEmpty. Operand 107306 states and 109169 transitions. [2018-07-21 23:32:24,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3404 [2018-07-21 23:32:24,009 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:32:24,012 INFO L358 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 23:32:24,012 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:32:24,013 INFO L82 PathProgramCache]: Analyzing trace with hash 874212758, now seen corresponding path program 1 times [2018-07-21 23:32:24,013 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:32:24,014 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:32:24,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:32:24,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:32:24,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:32:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:32:29,002 INFO L134 CoverageAnalysis]: Checked inductivity of 11767 backedges. 3405 proven. 0 refuted. 0 times theorem prover too weak. 8362 trivial. 0 not checked. [2018-07-21 23:32:29,003 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:32:29,003 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 23:32:29,004 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 23:32:29,004 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 23:32:29,004 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 23:32:29,004 INFO L87 Difference]: Start difference. First operand 107306 states and 109169 transitions. Second operand 3 states. [2018-07-21 23:32:31,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:32:31,452 INFO L93 Difference]: Finished difference Result 219524 states and 223308 transitions. [2018-07-21 23:32:31,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 23:32:31,452 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3403 [2018-07-21 23:32:31,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:32:31,565 INFO L225 Difference]: With dead ends: 219524 [2018-07-21 23:32:31,565 INFO L226 Difference]: Without dead ends: 113039 [2018-07-21 23:32:31,605 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 23:32:31,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113039 states. [2018-07-21 23:32:32,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113039 to 104849. [2018-07-21 23:32:32,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104849 states. [2018-07-21 23:32:32,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104849 states to 104849 states and 106419 transitions. [2018-07-21 23:32:32,619 INFO L78 Accepts]: Start accepts. Automaton has 104849 states and 106419 transitions. Word has length 3403 [2018-07-21 23:32:32,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:32:32,620 INFO L471 AbstractCegarLoop]: Abstraction has 104849 states and 106419 transitions. [2018-07-21 23:32:32,620 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 23:32:32,620 INFO L276 IsEmpty]: Start isEmpty. Operand 104849 states and 106419 transitions. [2018-07-21 23:32:32,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4020 [2018-07-21 23:32:32,765 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:32:32,767 INFO L358 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-21 23:32:32,767 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:32:32,768 INFO L82 PathProgramCache]: Analyzing trace with hash -463366936, now seen corresponding path program 1 times [2018-07-21 23:32:32,768 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:32:32,768 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:32:32,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:32:32,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:32:32,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:32:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:32:34,463 WARN L169 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-07-21 23:32:34,698 WARN L169 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-07-21 23:32:45,127 INFO L134 CoverageAnalysis]: Checked inductivity of 14204 backedges. 3911 proven. 114 refuted. 0 times theorem prover too weak. 10179 trivial. 0 not checked. [2018-07-21 23:32:45,127 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 23:32:45,127 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-21 23:32:45,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:32:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:32:46,221 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 23:32:51,609 INFO L134 CoverageAnalysis]: Checked inductivity of 14204 backedges. 8305 proven. 0 refuted. 0 times theorem prover too weak. 5899 trivial. 0 not checked. [2018-07-21 23:32:51,634 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 23:32:51,635 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2018-07-21 23:32:51,637 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-21 23:32:51,637 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-21 23:32:51,637 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-07-21 23:32:51,637 INFO L87 Difference]: Start difference. First operand 104849 states and 106419 transitions. Second operand 10 states. [2018-07-21 23:33:00,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:33:00,218 INFO L93 Difference]: Finished difference Result 213841 states and 217025 transitions. [2018-07-21 23:33:00,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-21 23:33:00,219 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 4019 [2018-07-21 23:33:00,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:33:00,336 INFO L225 Difference]: With dead ends: 213841 [2018-07-21 23:33:00,336 INFO L226 Difference]: Without dead ends: 109813 [2018-07-21 23:33:00,369 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4042 GetRequests, 4025 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2018-07-21 23:33:00,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109813 states. [2018-07-21 23:33:01,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109813 to 106380. [2018-07-21 23:33:01,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106380 states. [2018-07-21 23:33:01,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106380 states to 106380 states and 107763 transitions. [2018-07-21 23:33:01,313 INFO L78 Accepts]: Start accepts. Automaton has 106380 states and 107763 transitions. Word has length 4019 [2018-07-21 23:33:01,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:33:01,314 INFO L471 AbstractCegarLoop]: Abstraction has 106380 states and 107763 transitions. [2018-07-21 23:33:01,314 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-21 23:33:01,314 INFO L276 IsEmpty]: Start isEmpty. Operand 106380 states and 107763 transitions. [2018-07-21 23:33:01,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4776 [2018-07-21 23:33:01,485 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:33:01,487 INFO L358 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-21 23:33:01,487 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:33:01,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1769080290, now seen corresponding path program 1 times [2018-07-21 23:33:01,488 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:33:01,488 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:33:01,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:33:01,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:33:01,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:33:01,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:33:03,802 WARN L169 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-07-21 23:33:04,004 WARN L169 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-07-21 23:33:04,303 WARN L169 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-07-21 23:33:18,636 INFO L134 CoverageAnalysis]: Checked inductivity of 21414 backedges. 6639 proven. 284 refuted. 0 times theorem prover too weak. 14491 trivial. 0 not checked. [2018-07-21 23:33:18,637 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 23:33:18,637 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-21 23:33:18,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:33:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:33:19,971 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 23:33:26,799 INFO L134 CoverageAnalysis]: Checked inductivity of 21414 backedges. 11751 proven. 0 refuted. 0 times theorem prover too weak. 9663 trivial. 0 not checked. [2018-07-21 23:33:26,836 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 23:33:26,838 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2018-07-21 23:33:26,842 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-21 23:33:26,842 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-21 23:33:26,842 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-07-21 23:33:26,843 INFO L87 Difference]: Start difference. First operand 106380 states and 107763 transitions. Second operand 9 states. [2018-07-21 23:33:40,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:33:40,531 INFO L93 Difference]: Finished difference Result 245564 states and 248802 transitions. [2018-07-21 23:33:40,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-21 23:33:40,533 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 4775 [2018-07-21 23:33:40,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:33:40,658 INFO L225 Difference]: With dead ends: 245564 [2018-07-21 23:33:40,658 INFO L226 Difference]: Without dead ends: 140005 [2018-07-21 23:33:40,705 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4815 GetRequests, 4790 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2018-07-21 23:33:40,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140005 states. [2018-07-21 23:33:41,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140005 to 116503. [2018-07-21 23:33:41,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116503 states. [2018-07-21 23:33:41,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116503 states to 116503 states and 117996 transitions. [2018-07-21 23:33:41,821 INFO L78 Accepts]: Start accepts. Automaton has 116503 states and 117996 transitions. Word has length 4775 [2018-07-21 23:33:41,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:33:41,822 INFO L471 AbstractCegarLoop]: Abstraction has 116503 states and 117996 transitions. [2018-07-21 23:33:41,822 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-21 23:33:41,822 INFO L276 IsEmpty]: Start isEmpty. Operand 116503 states and 117996 transitions. [2018-07-21 23:33:42,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4804 [2018-07-21 23:33:42,443 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:33:42,444 INFO L358 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-21 23:33:42,445 INFO L414 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:33:42,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1298615104, now seen corresponding path program 1 times [2018-07-21 23:33:42,446 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:33:42,446 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:33:42,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:33:42,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:33:42,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:33:42,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:33:50,154 INFO L134 CoverageAnalysis]: Checked inductivity of 21062 backedges. 4230 proven. 0 refuted. 0 times theorem prover too weak. 16832 trivial. 0 not checked. [2018-07-21 23:33:50,154 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:33:50,156 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-21 23:33:50,158 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 23:33:50,158 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 23:33:50,158 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 23:33:50,158 INFO L87 Difference]: Start difference. First operand 116503 states and 117996 transitions. Second operand 4 states. [2018-07-21 23:33:53,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:33:53,745 INFO L93 Difference]: Finished difference Result 238879 states and 241957 transitions. [2018-07-21 23:33:53,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 23:33:53,746 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4803 [2018-07-21 23:33:53,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:33:53,847 INFO L225 Difference]: With dead ends: 238879 [2018-07-21 23:33:53,847 INFO L226 Difference]: Without dead ends: 121557 [2018-07-21 23:33:53,888 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 23:33:53,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121557 states. [2018-07-21 23:33:54,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121557 to 118138. [2018-07-21 23:33:54,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118138 states. [2018-07-21 23:33:54,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118138 states to 118138 states and 119590 transitions. [2018-07-21 23:33:54,923 INFO L78 Accepts]: Start accepts. Automaton has 118138 states and 119590 transitions. Word has length 4803 [2018-07-21 23:33:54,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:33:54,924 INFO L471 AbstractCegarLoop]: Abstraction has 118138 states and 119590 transitions. [2018-07-21 23:33:54,924 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-21 23:33:54,924 INFO L276 IsEmpty]: Start isEmpty. Operand 118138 states and 119590 transitions. [2018-07-21 23:33:55,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4905 [2018-07-21 23:33:55,096 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:33:55,098 INFO L358 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-21 23:33:55,098 INFO L414 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:33:55,099 INFO L82 PathProgramCache]: Analyzing trace with hash 818149632, now seen corresponding path program 1 times [2018-07-21 23:33:55,100 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:33:55,100 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:33:55,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:33:55,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:33:55,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:33:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:34:05,336 INFO L134 CoverageAnalysis]: Checked inductivity of 22276 backedges. 4933 proven. 0 refuted. 0 times theorem prover too weak. 17343 trivial. 0 not checked. [2018-07-21 23:34:05,336 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:34:05,337 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 23:34:05,340 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 23:34:05,340 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 23:34:05,341 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 23:34:05,341 INFO L87 Difference]: Start difference. First operand 118138 states and 119590 transitions. Second operand 3 states. Received shutdown request... [2018-07-21 23:34:06,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 23:34:06,329 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-21 23:34:06,333 WARN L202 ceAbstractionStarter]: Timeout [2018-07-21 23:34:06,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:34:06 BoogieIcfgContainer [2018-07-21 23:34:06,334 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-21 23:34:06,334 INFO L168 Benchmark]: Toolchain (without parser) took 215053.22 ms. Allocated memory was 301.5 MB in the beginning and 3.0 GB in the end (delta: 2.7 GB). Free memory was 231.0 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.6 GB. Max. memory is 5.3 GB. [2018-07-21 23:34:06,335 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 301.5 MB. Free memory is still 265.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-21 23:34:06,336 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2710.07 ms. Allocated memory was 301.5 MB in the beginning and 376.4 MB in the end (delta: 75.0 MB). Free memory was 231.0 MB in the beginning and 292.9 MB in the end (delta: -62.0 MB). Peak memory consumption was 100.1 MB. Max. memory is 5.3 GB. [2018-07-21 23:34:06,336 INFO L168 Benchmark]: Boogie Procedure Inliner took 274.65 ms. Allocated memory is still 376.4 MB. Free memory was 292.9 MB in the beginning and 254.1 MB in the end (delta: 38.9 MB). Peak memory consumption was 38.9 MB. Max. memory is 5.3 GB. [2018-07-21 23:34:06,337 INFO L168 Benchmark]: Boogie Preprocessor took 915.64 ms. Allocated memory was 376.4 MB in the beginning and 580.9 MB in the end (delta: 204.5 MB). Free memory was 254.1 MB in the beginning and 497.0 MB in the end (delta: -242.9 MB). Peak memory consumption was 75.7 MB. Max. memory is 5.3 GB. [2018-07-21 23:34:06,337 INFO L168 Benchmark]: RCFGBuilder took 9524.01 ms. Allocated memory was 580.9 MB in the beginning and 696.3 MB in the end (delta: 115.3 MB). Free memory was 497.0 MB in the beginning and 416.1 MB in the end (delta: 80.8 MB). Peak memory consumption was 279.2 MB. Max. memory is 5.3 GB. [2018-07-21 23:34:06,338 INFO L168 Benchmark]: TraceAbstraction took 201617.09 ms. Allocated memory was 696.3 MB in the beginning and 3.0 GB in the end (delta: 2.3 GB). Free memory was 411.0 MB in the beginning and 1.3 GB in the end (delta: -909.4 MB). Peak memory consumption was 1.4 GB. Max. memory is 5.3 GB. [2018-07-21 23:34:06,343 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 301.5 MB. Free memory is still 265.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 2710.07 ms. Allocated memory was 301.5 MB in the beginning and 376.4 MB in the end (delta: 75.0 MB). Free memory was 231.0 MB in the beginning and 292.9 MB in the end (delta: -62.0 MB). Peak memory consumption was 100.1 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 274.65 ms. Allocated memory is still 376.4 MB. Free memory was 292.9 MB in the beginning and 254.1 MB in the end (delta: 38.9 MB). Peak memory consumption was 38.9 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 915.64 ms. Allocated memory was 376.4 MB in the beginning and 580.9 MB in the end (delta: 204.5 MB). Free memory was 254.1 MB in the beginning and 497.0 MB in the end (delta: -242.9 MB). Peak memory consumption was 75.7 MB. Max. memory is 5.3 GB. * RCFGBuilder took 9524.01 ms. Allocated memory was 580.9 MB in the beginning and 696.3 MB in the end (delta: 115.3 MB). Free memory was 497.0 MB in the beginning and 416.1 MB in the end (delta: 80.8 MB). Peak memory consumption was 279.2 MB. Max. memory is 5.3 GB. * TraceAbstraction took 201617.09 ms. Allocated memory was 696.3 MB in the beginning and 3.0 GB in the end (delta: 2.3 GB). Free memory was 411.0 MB in the beginning and 1.3 GB in the end (delta: -909.4 MB). Peak memory consumption was 1.4 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 4682]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 4682). Cancelled while BasicCegarLoop was constructing difference of abstraction (118138states) and interpolant automaton (currently 3 states, 3 states before enhancement), while ReachableStatesComputation was computing reachable states (3852 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 886 locations, 1 error locations. TIMEOUT Result, 201.5s OverallTime, 14 OverallIterations, 16 TraceHistogramMax, 91.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7198 SDtfs, 35697 SDslu, 1249 SDs, 0 SdLazy, 84012 SolverSat, 14415 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 67.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11032 GetRequests, 10943 SyntacticMatches, 12 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130244occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 16.4s AutomataMinimizationTime, 13 MinimizatonAttempts, 85443 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.7s SsaConstructionTime, 4.0s SatisfiabilityAnalysisTime, 30.6s InterpolantComputationTime, 41699 NumberOfCodeBlocks, 41699 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 41681 ConstructedInterpolants, 0 QuantifiedInterpolants, 268235219 SizeOfPredicates, 1 NumberOfNonLiveVariables, 12475 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 18 InterpolantComputations, 14 PerfectInterpolantSequences, 129965/130630 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem04_label36_false-unreach-call_false-termination.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-21_23-34-06-360.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem04_label36_false-unreach-call_false-termination.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-21_23-34-06-360.csv Completed graceful shutdown