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_label25_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-22 07:03:27,081 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-22 07:03:27,083 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-22 07:03:27,098 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-22 07:03:27,098 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-22 07:03:27,100 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-22 07:03:27,101 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-22 07:03:27,109 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-22 07:03:27,111 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-22 07:03:27,113 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-22 07:03:27,114 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-22 07:03:27,114 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-22 07:03:27,115 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-22 07:03:27,118 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-22 07:03:27,119 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-22 07:03:27,120 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-22 07:03:27,132 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-22 07:03:27,134 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-22 07:03:27,135 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-22 07:03:27,137 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-22 07:03:27,138 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-22 07:03:27,139 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-22 07:03:27,144 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-22 07:03:27,144 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-22 07:03:27,145 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-22 07:03:27,146 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-22 07:03:27,146 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-22 07:03:27,147 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-22 07:03:27,149 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-22 07:03:27,150 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-22 07:03:27,150 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-22 07:03:27,151 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-22 07:03:27,151 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-22 07:03:27,151 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-22 07:03:27,152 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-22 07:03:27,154 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-22 07:03:27,155 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-07-22 07:03:27,180 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-22 07:03:27,181 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-22 07:03:27,181 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-22 07:03:27,182 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-22 07:03:27,182 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-22 07:03:27,182 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-22 07:03:27,183 INFO L133 SettingsManager]: * Use SBE=true [2018-07-22 07:03:27,183 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-22 07:03:27,183 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-22 07:03:27,183 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-22 07:03:27,183 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-22 07:03:27,183 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-22 07:03:27,186 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-22 07:03:27,186 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-22 07:03:27,187 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-22 07:03:27,187 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-22 07:03:27,187 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-22 07:03:27,187 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-22 07:03:27,187 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-22 07:03:27,188 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-22 07:03:27,188 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-22 07:03:27,188 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-22 07:03:27,188 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-22 07:03:27,188 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-22 07:03:27,189 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-22 07:03:27,189 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-22 07:03:27,189 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-22 07:03:27,189 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-22 07:03:27,189 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-22 07:03:27,232 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-22 07:03:27,250 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-22 07:03:27,255 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-22 07:03:27,256 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-22 07:03:27,257 INFO L276 PluginConnector]: CDTParser initialized [2018-07-22 07:03:27,258 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label25_true-unreach-call.c [2018-07-22 07:03:27,622 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/a3bbc5c5d/36f490f2850042d5a3d908280041c15e/FLAG47f092c89 [2018-07-22 07:03:28,194 INFO L276 CDTParser]: Found 1 translation units. [2018-07-22 07:03:28,196 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label25_true-unreach-call.c [2018-07-22 07:03:28,250 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/a3bbc5c5d/36f490f2850042d5a3d908280041c15e/FLAG47f092c89 [2018-07-22 07:03:28,271 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/a3bbc5c5d/36f490f2850042d5a3d908280041c15e [2018-07-22 07:03:28,285 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-22 07:03:28,291 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-22 07:03:28,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-22 07:03:28,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-22 07:03:28,299 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-22 07:03:28,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:03:28" (1/1) ... [2018-07-22 07:03:28,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2df9384a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:03:28, skipping insertion in model container [2018-07-22 07:03:28,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:03:28" (1/1) ... [2018-07-22 07:03:28,709 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-22 07:03:29,963 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 07:03:29,982 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-22 07:03:30,984 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 07:03:31,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:03:31 WrapperNode [2018-07-22 07:03:31,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-22 07:03:31,140 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-22 07:03:31,140 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-22 07:03:31,140 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-22 07:03:31,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:03:31" (1/1) ... [2018-07-22 07:03:31,206 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:03:31" (1/1) ... [2018-07-22 07:03:31,383 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-22 07:03:31,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-22 07:03:31,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-22 07:03:31,384 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-22 07:03:31,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:03:31" (1/1) ... [2018-07-22 07:03:31,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:03:31" (1/1) ... [2018-07-22 07:03:31,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:03:31" (1/1) ... [2018-07-22 07:03:31,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:03:31" (1/1) ... [2018-07-22 07:03:31,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:03:31" (1/1) ... [2018-07-22 07:03:32,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:03:31" (1/1) ... [2018-07-22 07:03:32,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:03:31" (1/1) ... [2018-07-22 07:03:32,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-22 07:03:32,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-22 07:03:32,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-22 07:03:32,226 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-22 07:03:32,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:03:31" (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 [2018-07-22 07:03:32,297 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-22 07:03:32,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-22 07:03:32,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-22 07:03:42,058 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-22 07:03:42,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:03:42 BoogieIcfgContainer [2018-07-22 07:03:42,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-22 07:03:42,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-22 07:03:42,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-22 07:03:42,064 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-22 07:03:42,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 07:03:28" (1/3) ... [2018-07-22 07:03:42,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2847303c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:03:42, skipping insertion in model container [2018-07-22 07:03:42,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:03:31" (2/3) ... [2018-07-22 07:03:42,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2847303c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:03:42, skipping insertion in model container [2018-07-22 07:03:42,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:03:42" (3/3) ... [2018-07-22 07:03:42,069 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label25_true-unreach-call.c [2018-07-22 07:03:42,079 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-22 07:03:42,089 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-22 07:03:42,173 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-22 07:03:42,174 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-22 07:03:42,174 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-22 07:03:42,174 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-22 07:03:42,174 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-22 07:03:42,174 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-22 07:03:42,174 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-22 07:03:42,175 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-22 07:03:42,175 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-22 07:03:42,222 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states. [2018-07-22 07:03:42,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 799 [2018-07-22 07:03:42,272 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 07:03:42,452 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 07:03:42,453 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 07:03:42,457 INFO L82 PathProgramCache]: Analyzing trace with hash -2144922555, now seen corresponding path program 1 times [2018-07-22 07:03:42,459 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 07:03:42,459 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 07:03:42,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 07:03:42,513 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 07:03:42,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 07:03:42,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 07:03:45,058 WARN L169 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-07-22 07:03:45,387 WARN L169 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-07-22 07:03:48,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 07:03:48,517 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 07:03:48,518 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-22 07:03:48,523 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-22 07:03:48,541 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-22 07:03:48,541 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-22 07:03:48,544 INFO L87 Difference]: Start difference. First operand 886 states. Second operand 7 states. [2018-07-22 07:04:03,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 07:04:03,256 INFO L93 Difference]: Finished difference Result 5064 states and 9944 transitions. [2018-07-22 07:04:03,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-22 07:04:03,258 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 798 [2018-07-22 07:04:03,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 07:04:03,318 INFO L225 Difference]: With dead ends: 5064 [2018-07-22 07:04:03,318 INFO L226 Difference]: Without dead ends: 4162 [2018-07-22 07:04:03,332 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 8 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-22 07:04:03,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4162 states. [2018-07-22 07:04:03,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4162 to 4159. [2018-07-22 07:04:03,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4159 states. [2018-07-22 07:04:03,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4159 states to 4159 states and 5819 transitions. [2018-07-22 07:04:03,541 INFO L78 Accepts]: Start accepts. Automaton has 4159 states and 5819 transitions. Word has length 798 [2018-07-22 07:04:03,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 07:04:03,545 INFO L471 AbstractCegarLoop]: Abstraction has 4159 states and 5819 transitions. [2018-07-22 07:04:03,545 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-22 07:04:03,545 INFO L276 IsEmpty]: Start isEmpty. Operand 4159 states and 5819 transitions. [2018-07-22 07:04:03,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 821 [2018-07-22 07:04:03,625 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 07:04:03,625 INFO L358 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 07:04:03,626 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 07:04:03,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1573812030, now seen corresponding path program 1 times [2018-07-22 07:04:03,627 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 07:04:03,627 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 07:04:03,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 07:04:03,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 07:04:03,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 07:04:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 07:04:04,128 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-22 07:04:04,128 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 07:04:04,129 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-22 07:04:04,131 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 07:04:04,131 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 07:04:04,131 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 07:04:04,133 INFO L87 Difference]: Start difference. First operand 4159 states and 5819 transitions. Second operand 3 states. [2018-07-22 07:04:08,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 07:04:08,129 INFO L93 Difference]: Finished difference Result 9135 states and 13979 transitions. [2018-07-22 07:04:08,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 07:04:08,130 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 820 [2018-07-22 07:04:08,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 07:04:08,161 INFO L225 Difference]: With dead ends: 9135 [2018-07-22 07:04:08,161 INFO L226 Difference]: Without dead ends: 5797 [2018-07-22 07:04:08,168 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 07:04:08,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5797 states. [2018-07-22 07:04:08,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5797 to 5797. [2018-07-22 07:04:08,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5797 states. [2018-07-22 07:04:08,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5797 states to 5797 states and 8123 transitions. [2018-07-22 07:04:08,342 INFO L78 Accepts]: Start accepts. Automaton has 5797 states and 8123 transitions. Word has length 820 [2018-07-22 07:04:08,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 07:04:08,343 INFO L471 AbstractCegarLoop]: Abstraction has 5797 states and 8123 transitions. [2018-07-22 07:04:08,343 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 07:04:08,343 INFO L276 IsEmpty]: Start isEmpty. Operand 5797 states and 8123 transitions. [2018-07-22 07:04:08,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 868 [2018-07-22 07:04:08,363 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 07:04:08,364 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 07:04:08,364 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 07:04:08,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1923983217, now seen corresponding path program 1 times [2018-07-22 07:04:08,365 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 07:04:08,365 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 07:04:08,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 07:04:08,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 07:04:08,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 07:04:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 07:04:09,186 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-07-22 07:04:09,186 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 07:04:09,218 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 07:04:09,219 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 07:04:09,219 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 07:04:09,219 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 07:04:09,220 INFO L87 Difference]: Start difference. First operand 5797 states and 8123 transitions. Second operand 4 states. [2018-07-22 07:04:13,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 07:04:13,774 INFO L93 Difference]: Finished difference Result 18963 states and 28225 transitions. [2018-07-22 07:04:13,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 07:04:13,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 867 [2018-07-22 07:04:13,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 07:04:13,834 INFO L225 Difference]: With dead ends: 18963 [2018-07-22 07:04:13,834 INFO L226 Difference]: Without dead ends: 13987 [2018-07-22 07:04:13,843 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 [2018-07-22 07:04:13,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13987 states. [2018-07-22 07:04:14,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13987 to 13987. [2018-07-22 07:04:14,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13987 states. [2018-07-22 07:04:14,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13987 states to 13987 states and 18550 transitions. [2018-07-22 07:04:14,181 INFO L78 Accepts]: Start accepts. Automaton has 13987 states and 18550 transitions. Word has length 867 [2018-07-22 07:04:14,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 07:04:14,181 INFO L471 AbstractCegarLoop]: Abstraction has 13987 states and 18550 transitions. [2018-07-22 07:04:14,181 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 07:04:14,182 INFO L276 IsEmpty]: Start isEmpty. Operand 13987 states and 18550 transitions. [2018-07-22 07:04:14,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 953 [2018-07-22 07:04:14,222 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 07:04:14,241 INFO L358 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 07:04:14,241 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 07:04:14,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1441729693, now seen corresponding path program 1 times [2018-07-22 07:04:14,241 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 07:04:14,242 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 07:04:14,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 07:04:14,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 07:04:14,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 07:04:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 07:04:15,053 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 129 proven. 4 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2018-07-22 07:04:15,054 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 07:04:15,054 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 [2018-07-22 07:04:15,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 07:04:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 07:04:15,503 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 07:04:15,965 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2018-07-22 07:04:16,058 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 07:04:16,058 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-07-22 07:04:16,060 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 07:04:16,060 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 07:04:16,060 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 07:04:16,061 INFO L87 Difference]: Start difference. First operand 13987 states and 18550 transitions. Second operand 5 states. [2018-07-22 07:04:21,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 07:04:21,407 INFO L93 Difference]: Finished difference Result 49266 states and 67245 transitions. [2018-07-22 07:04:21,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 07:04:21,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 952 [2018-07-22 07:04:21,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 07:04:21,508 INFO L225 Difference]: With dead ends: 49266 [2018-07-22 07:04:21,508 INFO L226 Difference]: Without dead ends: 36100 [2018-07-22 07:04:21,532 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 956 GetRequests, 951 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 07:04:21,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36100 states. [2018-07-22 07:04:22,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36100 to 36100. [2018-07-22 07:04:22,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36100 states. [2018-07-22 07:04:22,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36100 states to 36100 states and 45358 transitions. [2018-07-22 07:04:22,598 INFO L78 Accepts]: Start accepts. Automaton has 36100 states and 45358 transitions. Word has length 952 [2018-07-22 07:04:22,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 07:04:22,599 INFO L471 AbstractCegarLoop]: Abstraction has 36100 states and 45358 transitions. [2018-07-22 07:04:22,599 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 07:04:22,599 INFO L276 IsEmpty]: Start isEmpty. Operand 36100 states and 45358 transitions. [2018-07-22 07:04:22,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1024 [2018-07-22 07:04:22,668 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 07:04:22,669 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-22 07:04:22,669 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 07:04:22,670 INFO L82 PathProgramCache]: Analyzing trace with hash -468326284, now seen corresponding path program 1 times [2018-07-22 07:04:22,670 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 07:04:22,670 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 07:04:22,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 07:04:22,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 07:04:22,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 07:04:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 07:04:23,392 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 269 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-07-22 07:04:23,392 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 07:04:23,392 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-22 07:04:23,394 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 07:04:23,394 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 07:04:23,394 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 07:04:23,394 INFO L87 Difference]: Start difference. First operand 36100 states and 45358 transitions. Second operand 3 states. [2018-07-22 07:04:27,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 07:04:27,227 INFO L93 Difference]: Finished difference Result 99225 states and 126247 transitions. [2018-07-22 07:04:27,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 07:04:27,227 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1023 [2018-07-22 07:04:27,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 07:04:27,322 INFO L225 Difference]: With dead ends: 99225 [2018-07-22 07:04:27,322 INFO L226 Difference]: Without dead ends: 63946 [2018-07-22 07:04:27,371 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 07:04:27,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63946 states. [2018-07-22 07:04:28,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63946 to 63946. [2018-07-22 07:04:28,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63946 states. [2018-07-22 07:04:28,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63946 states to 63946 states and 79205 transitions. [2018-07-22 07:04:28,302 INFO L78 Accepts]: Start accepts. Automaton has 63946 states and 79205 transitions. Word has length 1023 [2018-07-22 07:04:28,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 07:04:28,303 INFO L471 AbstractCegarLoop]: Abstraction has 63946 states and 79205 transitions. [2018-07-22 07:04:28,303 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 07:04:28,303 INFO L276 IsEmpty]: Start isEmpty. Operand 63946 states and 79205 transitions. [2018-07-22 07:04:28,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1045 [2018-07-22 07:04:28,388 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 07:04:28,389 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 07:04:28,389 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 07:04:28,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1324932294, now seen corresponding path program 1 times [2018-07-22 07:04:28,389 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 07:04:28,389 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 07:04:28,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 07:04:28,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 07:04:28,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 07:04:28,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 07:04:29,537 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 305 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2018-07-22 07:04:29,537 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 07:04:29,537 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-22 07:04:29,539 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 07:04:29,539 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 07:04:29,539 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 07:04:29,539 INFO L87 Difference]: Start difference. First operand 63946 states and 79205 transitions. Second operand 3 states. [2018-07-22 07:04:33,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 07:04:33,147 INFO L93 Difference]: Finished difference Result 165564 states and 203951 transitions. [2018-07-22 07:04:33,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 07:04:33,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1044 [2018-07-22 07:04:33,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 07:04:33,291 INFO L225 Difference]: With dead ends: 165564 [2018-07-22 07:04:33,291 INFO L226 Difference]: Without dead ends: 102439 [2018-07-22 07:04:33,354 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 07:04:33,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102439 states. [2018-07-22 07:04:34,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102439 to 100801. [2018-07-22 07:04:34,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100801 states. [2018-07-22 07:04:35,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100801 states to 100801 states and 118307 transitions. [2018-07-22 07:04:35,025 INFO L78 Accepts]: Start accepts. Automaton has 100801 states and 118307 transitions. Word has length 1044 [2018-07-22 07:04:35,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 07:04:35,025 INFO L471 AbstractCegarLoop]: Abstraction has 100801 states and 118307 transitions. [2018-07-22 07:04:35,025 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 07:04:35,025 INFO L276 IsEmpty]: Start isEmpty. Operand 100801 states and 118307 transitions. [2018-07-22 07:04:35,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1122 [2018-07-22 07:04:35,087 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 07:04:35,088 INFO L358 BasicCegarLoop]: trace histogram [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, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 07:04:35,088 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 07:04:35,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1488602232, now seen corresponding path program 1 times [2018-07-22 07:04:35,090 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 07:04:35,090 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 07:04:35,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 07:04:35,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 07:04:35,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 07:04:35,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 07:04:38,718 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 245 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2018-07-22 07:04:38,718 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 07:04:38,718 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 07:04:38,720 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 07:04:38,720 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 07:04:38,720 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 07:04:38,720 INFO L87 Difference]: Start difference. First operand 100801 states and 118307 transitions. Second operand 4 states. [2018-07-22 07:04:44,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 07:04:44,450 INFO L93 Difference]: Finished difference Result 223713 states and 263655 transitions. [2018-07-22 07:04:44,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 07:04:44,451 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1121 [2018-07-22 07:04:44,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 07:04:44,570 INFO L225 Difference]: With dead ends: 223713 [2018-07-22 07:04:44,571 INFO L226 Difference]: Without dead ends: 123733 [2018-07-22 07:04:44,611 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 07:04:44,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123733 states. [2018-07-22 07:04:45,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123733 to 123733. [2018-07-22 07:04:45,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123733 states. [2018-07-22 07:04:45,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123733 states to 123733 states and 143407 transitions. [2018-07-22 07:04:45,727 INFO L78 Accepts]: Start accepts. Automaton has 123733 states and 143407 transitions. Word has length 1121 [2018-07-22 07:04:45,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 07:04:45,727 INFO L471 AbstractCegarLoop]: Abstraction has 123733 states and 143407 transitions. [2018-07-22 07:04:45,728 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 07:04:45,728 INFO L276 IsEmpty]: Start isEmpty. Operand 123733 states and 143407 transitions. [2018-07-22 07:04:45,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1165 [2018-07-22 07:04:45,783 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 07:04:45,784 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, 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] [2018-07-22 07:04:45,785 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 07:04:45,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1757206955, now seen corresponding path program 1 times [2018-07-22 07:04:45,785 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 07:04:45,785 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 07:04:45,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 07:04:45,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 07:04:45,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 07:04:45,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 07:04:47,393 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 573 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-07-22 07:04:47,393 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 07:04:47,393 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 07:04:47,394 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 07:04:47,395 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 07:04:47,395 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 07:04:47,395 INFO L87 Difference]: Start difference. First operand 123733 states and 143407 transitions. Second operand 4 states. [2018-07-22 07:04:52,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 07:04:52,124 INFO L93 Difference]: Finished difference Result 246645 states and 285987 transitions. [2018-07-22 07:04:52,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 07:04:52,125 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1164 [2018-07-22 07:04:52,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 07:04:52,236 INFO L225 Difference]: With dead ends: 246645 [2018-07-22 07:04:52,236 INFO L226 Difference]: Without dead ends: 123733 [2018-07-22 07:04:52,283 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 [2018-07-22 07:04:52,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123733 states. [2018-07-22 07:04:53,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123733 to 118819. [2018-07-22 07:04:53,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118819 states. [2018-07-22 07:04:53,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118819 states to 118819 states and 132514 transitions. [2018-07-22 07:04:53,285 INFO L78 Accepts]: Start accepts. Automaton has 118819 states and 132514 transitions. Word has length 1164 [2018-07-22 07:04:53,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 07:04:53,286 INFO L471 AbstractCegarLoop]: Abstraction has 118819 states and 132514 transitions. [2018-07-22 07:04:53,286 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 07:04:53,286 INFO L276 IsEmpty]: Start isEmpty. Operand 118819 states and 132514 transitions. [2018-07-22 07:04:53,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1248 [2018-07-22 07:04:53,337 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 07:04:53,337 INFO L358 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 07:04:53,337 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 07:04:53,338 INFO L82 PathProgramCache]: Analyzing trace with hash 2014157393, now seen corresponding path program 1 times [2018-07-22 07:04:53,338 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 07:04:53,338 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 07:04:53,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 07:04:53,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 07:04:53,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 07:04:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 07:04:55,577 INFO L134 CoverageAnalysis]: Checked inductivity of 853 backedges. 704 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2018-07-22 07:04:55,578 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 07:04:55,578 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 07:04:55,579 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 07:04:55,579 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 07:04:55,580 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 07:04:55,580 INFO L87 Difference]: Start difference. First operand 118819 states and 132514 transitions. Second operand 4 states. [2018-07-22 07:04:59,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 07:04:59,329 INFO L93 Difference]: Finished difference Result 239274 states and 266743 transitions. [2018-07-22 07:04:59,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 07:04:59,330 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1247 [2018-07-22 07:04:59,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 07:04:59,441 INFO L225 Difference]: With dead ends: 239274 [2018-07-22 07:04:59,441 INFO L226 Difference]: Without dead ends: 121276 [2018-07-22 07:04:59,472 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 [2018-07-22 07:04:59,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121276 states. [2018-07-22 07:05:00,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121276 to 119638. [2018-07-22 07:05:00,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119638 states. [2018-07-22 07:05:00,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119638 states to 119638 states and 131819 transitions. [2018-07-22 07:05:00,497 INFO L78 Accepts]: Start accepts. Automaton has 119638 states and 131819 transitions. Word has length 1247 [2018-07-22 07:05:00,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 07:05:00,498 INFO L471 AbstractCegarLoop]: Abstraction has 119638 states and 131819 transitions. [2018-07-22 07:05:00,498 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 07:05:00,498 INFO L276 IsEmpty]: Start isEmpty. Operand 119638 states and 131819 transitions. [2018-07-22 07:05:00,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1425 [2018-07-22 07:05:00,562 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 07:05:00,596 INFO L358 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 07:05:00,596 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 07:05:00,596 INFO L82 PathProgramCache]: Analyzing trace with hash -306401429, now seen corresponding path program 1 times [2018-07-22 07:05:00,596 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 07:05:00,597 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 07:05:00,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 07:05:00,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 07:05:00,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 07:05:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 07:05:04,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1419 backedges. 699 proven. 0 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2018-07-22 07:05:04,592 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 07:05:04,592 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 07:05:04,593 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 07:05:04,593 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 07:05:04,593 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 07:05:04,593 INFO L87 Difference]: Start difference. First operand 119638 states and 131819 transitions. Second operand 4 states. [2018-07-22 07:05:09,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 07:05:09,847 INFO L93 Difference]: Finished difference Result 281862 states and 310877 transitions. [2018-07-22 07:05:09,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 07:05:09,849 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1424 [2018-07-22 07:05:09,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 07:05:10,012 INFO L225 Difference]: With dead ends: 281862 [2018-07-22 07:05:10,012 INFO L226 Difference]: Without dead ends: 163045 [2018-07-22 07:05:10,077 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 [2018-07-22 07:05:10,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163045 states. [2018-07-22 07:05:11,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163045 to 161407. [2018-07-22 07:05:11,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161407 states. [2018-07-22 07:05:11,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161407 states to 161407 states and 173658 transitions. [2018-07-22 07:05:11,687 INFO L78 Accepts]: Start accepts. Automaton has 161407 states and 173658 transitions. Word has length 1424 [2018-07-22 07:05:11,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 07:05:11,687 INFO L471 AbstractCegarLoop]: Abstraction has 161407 states and 173658 transitions. [2018-07-22 07:05:11,687 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 07:05:11,687 INFO L276 IsEmpty]: Start isEmpty. Operand 161407 states and 173658 transitions. [2018-07-22 07:05:11,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1435 [2018-07-22 07:05:11,752 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 07:05:11,753 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 07:05:11,753 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 07:05:11,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1142058005, now seen corresponding path program 1 times [2018-07-22 07:05:11,754 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 07:05:11,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 07:05:11,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 07:05:11,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 07:05:11,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 07:05:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 07:05:15,237 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2018-07-22 07:05:15,238 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 07:05:15,238 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 07:05:15,239 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 07:05:15,239 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 07:05:15,239 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 07:05:15,239 INFO L87 Difference]: Start difference. First operand 161407 states and 173658 transitions. Second operand 4 states. [2018-07-22 07:05:20,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 07:05:20,060 INFO L93 Difference]: Finished difference Result 323631 states and 348193 transitions. [2018-07-22 07:05:20,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 07:05:20,061 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1434 [2018-07-22 07:05:20,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 07:05:20,239 INFO L225 Difference]: With dead ends: 323631 [2018-07-22 07:05:20,239 INFO L226 Difference]: Without dead ends: 163045 [2018-07-22 07:05:20,320 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 [2018-07-22 07:05:20,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163045 states. [2018-07-22 07:05:21,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163045 to 161407. [2018-07-22 07:05:21,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161407 states. [2018-07-22 07:05:22,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161407 states to 161407 states and 173040 transitions. [2018-07-22 07:05:22,054 INFO L78 Accepts]: Start accepts. Automaton has 161407 states and 173040 transitions. Word has length 1434 [2018-07-22 07:05:22,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 07:05:22,054 INFO L471 AbstractCegarLoop]: Abstraction has 161407 states and 173040 transitions. [2018-07-22 07:05:22,054 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 07:05:22,054 INFO L276 IsEmpty]: Start isEmpty. Operand 161407 states and 173040 transitions. [2018-07-22 07:05:22,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1444 [2018-07-22 07:05:22,129 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 07:05:22,129 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 07:05:22,130 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 07:05:22,130 INFO L82 PathProgramCache]: Analyzing trace with hash 47226788, now seen corresponding path program 1 times [2018-07-22 07:05:22,130 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 07:05:22,130 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 07:05:22,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 07:05:22,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 07:05:22,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 07:05:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 07:05:23,561 WARN L169 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-07-22 07:05:27,789 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 671 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-07-22 07:05:27,789 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 07:05:27,790 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 07:05:27,790 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 07:05:27,790 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 07:05:27,791 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 07:05:27,791 INFO L87 Difference]: Start difference. First operand 161407 states and 173040 transitions. Second operand 5 states. [2018-07-22 07:05:33,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 07:05:33,751 INFO L93 Difference]: Finished difference Result 322812 states and 346090 transitions. [2018-07-22 07:05:33,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 07:05:33,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1443 [2018-07-22 07:05:33,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 07:05:33,925 INFO L225 Difference]: With dead ends: 322812 [2018-07-22 07:05:33,925 INFO L226 Difference]: Without dead ends: 162226 [2018-07-22 07:05:33,991 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 07:05:34,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162226 states. [2018-07-22 07:05:35,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162226 to 161407. [2018-07-22 07:05:35,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161407 states. [2018-07-22 07:05:35,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161407 states to 161407 states and 172926 transitions. [2018-07-22 07:05:35,772 INFO L78 Accepts]: Start accepts. Automaton has 161407 states and 172926 transitions. Word has length 1443 [2018-07-22 07:05:35,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 07:05:35,772 INFO L471 AbstractCegarLoop]: Abstraction has 161407 states and 172926 transitions. [2018-07-22 07:05:35,772 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 07:05:35,772 INFO L276 IsEmpty]: Start isEmpty. Operand 161407 states and 172926 transitions. [2018-07-22 07:05:35,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1493 [2018-07-22 07:05:35,853 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 07:05:35,854 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 07:05:35,854 INFO L414 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 07:05:35,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1884291767, now seen corresponding path program 1 times [2018-07-22 07:05:35,855 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 07:05:35,855 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 07:05:35,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 07:05:35,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 07:05:35,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 07:05:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 07:05:38,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 787 proven. 0 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2018-07-22 07:05:38,103 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 07:05:38,103 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 07:05:38,104 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 07:05:38,104 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 07:05:38,104 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 07:05:38,104 INFO L87 Difference]: Start difference. First operand 161407 states and 172926 transitions. Second operand 4 states. [2018-07-22 07:05:43,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 07:05:43,110 INFO L93 Difference]: Finished difference Result 333466 states and 357130 transitions. [2018-07-22 07:05:43,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 07:05:43,111 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1492 [2018-07-22 07:05:43,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 07:05:43,273 INFO L225 Difference]: With dead ends: 333466 [2018-07-22 07:05:43,274 INFO L226 Difference]: Without dead ends: 172880 [2018-07-22 07:05:43,340 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 [2018-07-22 07:05:43,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172880 states. [2018-07-22 07:05:44,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172880 to 163864. [2018-07-22 07:05:44,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163864 states. [2018-07-22 07:05:45,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163864 states to 163864 states and 174298 transitions. [2018-07-22 07:05:45,080 INFO L78 Accepts]: Start accepts. Automaton has 163864 states and 174298 transitions. Word has length 1492 [2018-07-22 07:05:45,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 07:05:45,081 INFO L471 AbstractCegarLoop]: Abstraction has 163864 states and 174298 transitions. [2018-07-22 07:05:45,081 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 07:05:45,081 INFO L276 IsEmpty]: Start isEmpty. Operand 163864 states and 174298 transitions. [2018-07-22 07:05:45,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1517 [2018-07-22 07:05:45,149 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 07:05:45,150 INFO L358 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 07:05:45,150 INFO L414 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 07:05:45,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1434141537, now seen corresponding path program 1 times [2018-07-22 07:05:45,151 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 07:05:45,151 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 07:05:45,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 07:05:45,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 07:05:45,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 07:05:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 07:05:49,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1495 backedges. 955 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2018-07-22 07:05:49,867 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 07:05:49,867 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 07:05:49,868 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 07:05:49,868 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 07:05:49,868 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 07:05:49,869 INFO L87 Difference]: Start difference. First operand 163864 states and 174298 transitions. Second operand 4 states. [2018-07-22 07:05:53,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 07:05:53,557 INFO L93 Difference]: Finished difference Result 328545 states and 349473 transitions. [2018-07-22 07:05:53,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 07:05:53,558 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1516 [2018-07-22 07:05:53,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 07:05:53,730 INFO L225 Difference]: With dead ends: 328545 [2018-07-22 07:05:53,730 INFO L226 Difference]: Without dead ends: 165502 [2018-07-22 07:05:53,807 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 [2018-07-22 07:05:53,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165502 states. [2018-07-22 07:05:55,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165502 to 165502. [2018-07-22 07:05:55,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165502 states. [2018-07-22 07:05:55,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165502 states to 165502 states and 175573 transitions. [2018-07-22 07:05:55,635 INFO L78 Accepts]: Start accepts. Automaton has 165502 states and 175573 transitions. Word has length 1516 [2018-07-22 07:05:55,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 07:05:55,636 INFO L471 AbstractCegarLoop]: Abstraction has 165502 states and 175573 transitions. [2018-07-22 07:05:55,636 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 07:05:55,636 INFO L276 IsEmpty]: Start isEmpty. Operand 165502 states and 175573 transitions. [2018-07-22 07:05:55,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1540 [2018-07-22 07:05:55,718 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 07:05:55,718 INFO L358 BasicCegarLoop]: trace histogram [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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-22 07:05:55,719 INFO L414 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 07:05:55,719 INFO L82 PathProgramCache]: Analyzing trace with hash -75850651, now seen corresponding path program 1 times [2018-07-22 07:05:55,719 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 07:05:55,719 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 07:05:55,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 07:05:55,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 07:05:55,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 07:05:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 07:05:56,833 WARN L169 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-07-22 07:05:59,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1768 backedges. 1174 proven. 316 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2018-07-22 07:05:59,661 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 07:05:59,661 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 [2018-07-22 07:05:59,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 07:06:00,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 07:06:00,063 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 07:06:01,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1768 backedges. 1412 proven. 0 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2018-07-22 07:06:01,039 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 07:06:01,040 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2018-07-22 07:06:01,042 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-22 07:06:01,042 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-22 07:06:01,042 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-07-22 07:06:01,044 INFO L87 Difference]: Start difference. First operand 165502 states and 175573 transitions. Second operand 9 states. [2018-07-22 07:06:17,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 07:06:17,794 INFO L93 Difference]: Finished difference Result 350733 states and 372306 transitions. [2018-07-22 07:06:17,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-22 07:06:17,794 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1539 [2018-07-22 07:06:17,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 07:06:17,975 INFO L225 Difference]: With dead ends: 350733 [2018-07-22 07:06:17,975 INFO L226 Difference]: Without dead ends: 184412 [2018-07-22 07:06:18,037 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 1587 GetRequests, 1558 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=243, Invalid=627, Unknown=0, NotChecked=0, Total=870 [2018-07-22 07:06:18,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184412 states. [2018-07-22 07:06:19,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184412 to 162223. [2018-07-22 07:06:19,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162223 states. [2018-07-22 07:06:19,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162223 states to 162223 states and 169291 transitions. [2018-07-22 07:06:19,953 INFO L78 Accepts]: Start accepts. Automaton has 162223 states and 169291 transitions. Word has length 1539 [2018-07-22 07:06:19,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 07:06:19,954 INFO L471 AbstractCegarLoop]: Abstraction has 162223 states and 169291 transitions. [2018-07-22 07:06:19,954 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-22 07:06:19,954 INFO L276 IsEmpty]: Start isEmpty. Operand 162223 states and 169291 transitions. [2018-07-22 07:06:20,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1953 [2018-07-22 07:06:20,071 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 07:06:20,071 INFO L358 BasicCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 07:06:20,072 INFO L414 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 07:06:20,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1757059620, now seen corresponding path program 1 times [2018-07-22 07:06:20,072 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 07:06:20,072 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 07:06:20,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 07:06:20,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 07:06:20,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 07:06:20,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 07:06:22,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2029 backedges. 633 proven. 0 refuted. 0 times theorem prover too weak. 1396 trivial. 0 not checked. [2018-07-22 07:06:22,585 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 07:06:22,585 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 07:06:22,586 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 07:06:22,586 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 07:06:22,586 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 07:06:22,587 INFO L87 Difference]: Start difference. First operand 162223 states and 169291 transitions. Second operand 4 states. [2018-07-22 07:06:27,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 07:06:27,417 INFO L93 Difference]: Finished difference Result 322805 states and 336922 transitions. [2018-07-22 07:06:27,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 07:06:27,417 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1952 [2018-07-22 07:06:27,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 07:06:27,532 INFO L225 Difference]: With dead ends: 322805 [2018-07-22 07:06:27,532 INFO L226 Difference]: Without dead ends: 121223 [2018-07-22 07:06:27,605 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 [2018-07-22 07:06:27,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121223 states. [2018-07-22 07:06:29,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121223 to 115490. [2018-07-22 07:06:29,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115490 states. [2018-07-22 07:06:29,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115490 states to 115490 states and 116564 transitions. [2018-07-22 07:06:29,188 INFO L78 Accepts]: Start accepts. Automaton has 115490 states and 116564 transitions. Word has length 1952 [2018-07-22 07:06:29,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 07:06:29,189 INFO L471 AbstractCegarLoop]: Abstraction has 115490 states and 116564 transitions. [2018-07-22 07:06:29,189 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 07:06:29,189 INFO L276 IsEmpty]: Start isEmpty. Operand 115490 states and 116564 transitions. [2018-07-22 07:06:29,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2061 [2018-07-22 07:06:29,255 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 07:06:29,256 INFO L358 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 07:06:29,256 INFO L414 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 07:06:29,257 INFO L82 PathProgramCache]: Analyzing trace with hash -727235754, now seen corresponding path program 1 times [2018-07-22 07:06:29,257 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 07:06:29,257 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 07:06:29,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 07:06:29,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 07:06:29,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 07:06:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 07:06:34,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2496 backedges. 1098 proven. 0 refuted. 0 times theorem prover too weak. 1398 trivial. 0 not checked. [2018-07-22 07:06:34,117 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 07:06:34,117 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 07:06:34,118 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 07:06:34,118 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 07:06:34,118 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 07:06:34,119 INFO L87 Difference]: Start difference. First operand 115490 states and 116564 transitions. Second operand 4 states. [2018-07-22 07:06:37,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 07:06:37,436 INFO L93 Difference]: Finished difference Result 226063 states and 228186 transitions. [2018-07-22 07:06:37,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 07:06:37,437 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 2060 [2018-07-22 07:06:37,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 07:06:37,533 INFO L225 Difference]: With dead ends: 226063 [2018-07-22 07:06:37,533 INFO L226 Difference]: Without dead ends: 113850 [2018-07-22 07:06:37,577 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 [2018-07-22 07:06:37,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113850 states. [2018-07-22 07:06:38,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113850 to 113850. [2018-07-22 07:06:38,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113850 states. [2018-07-22 07:06:38,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113850 states to 113850 states and 114779 transitions. [2018-07-22 07:06:38,690 INFO L78 Accepts]: Start accepts. Automaton has 113850 states and 114779 transitions. Word has length 2060 [2018-07-22 07:06:38,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 07:06:38,691 INFO L471 AbstractCegarLoop]: Abstraction has 113850 states and 114779 transitions. [2018-07-22 07:06:38,691 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 07:06:38,691 INFO L276 IsEmpty]: Start isEmpty. Operand 113850 states and 114779 transitions. [2018-07-22 07:06:38,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2069 [2018-07-22 07:06:38,754 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 07:06:38,755 INFO L358 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 07:06:38,755 INFO L414 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 07:06:38,756 INFO L82 PathProgramCache]: Analyzing trace with hash 715218590, now seen corresponding path program 1 times [2018-07-22 07:06:38,756 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 07:06:38,756 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 07:06:38,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 07:06:38,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 07:06:38,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 07:06:38,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 07:06:44,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2460 backedges. 1312 proven. 608 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2018-07-22 07:06:44,898 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 07:06:44,898 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 [2018-07-22 07:06:44,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 07:06:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 07:06:45,412 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 07:06:47,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2460 backedges. 1267 proven. 0 refuted. 0 times theorem prover too weak. 1193 trivial. 0 not checked. [2018-07-22 07:06:47,396 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 07:06:47,397 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2018-07-22 07:06:47,399 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-22 07:06:47,399 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-22 07:06:47,399 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-07-22 07:06:47,399 INFO L87 Difference]: Start difference. First operand 113850 states and 114779 transitions. Second operand 10 states. Received shutdown request... [2018-07-22 07:06:58,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-22 07:06:58,741 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-22 07:06:58,745 WARN L202 ceAbstractionStarter]: Timeout [2018-07-22 07:06:58,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 07:06:58 BoogieIcfgContainer [2018-07-22 07:06:58,746 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-22 07:06:58,747 INFO L168 Benchmark]: Toolchain (without parser) took 210461.53 ms. Allocated memory was 309.9 MB in the beginning and 3.0 GB in the end (delta: 2.6 GB). Free memory was 240.6 MB in the beginning and 1.2 GB in the end (delta: -964.9 MB). Peak memory consumption was 1.7 GB. Max. memory is 5.3 GB. [2018-07-22 07:06:58,747 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 309.9 MB. Free memory is still 275.5 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-22 07:06:58,748 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2847.41 ms. Allocated memory was 309.9 MB in the beginning and 379.6 MB in the end (delta: 69.7 MB). Free memory was 240.6 MB in the beginning and 298.1 MB in the end (delta: -57.5 MB). Peak memory consumption was 97.1 MB. Max. memory is 5.3 GB. [2018-07-22 07:06:58,749 INFO L168 Benchmark]: Boogie Procedure Inliner took 243.31 ms. Allocated memory is still 379.6 MB. Free memory was 298.1 MB in the beginning and 258.4 MB in the end (delta: 39.7 MB). Peak memory consumption was 39.7 MB. Max. memory is 5.3 GB. [2018-07-22 07:06:58,749 INFO L168 Benchmark]: Boogie Preprocessor took 841.74 ms. Allocated memory was 379.6 MB in the beginning and 585.6 MB in the end (delta: 206.0 MB). Free memory was 258.4 MB in the beginning and 503.2 MB in the end (delta: -244.8 MB). Peak memory consumption was 75.7 MB. Max. memory is 5.3 GB. [2018-07-22 07:06:58,750 INFO L168 Benchmark]: RCFGBuilder took 9832.85 ms. Allocated memory was 585.6 MB in the beginning and 706.2 MB in the end (delta: 120.6 MB). Free memory was 503.2 MB in the beginning and 448.8 MB in the end (delta: 54.4 MB). Peak memory consumption was 286.0 MB. Max. memory is 5.3 GB. [2018-07-22 07:06:58,751 INFO L168 Benchmark]: TraceAbstraction took 196686.49 ms. Allocated memory was 706.2 MB in the beginning and 3.0 GB in the end (delta: 2.2 GB). Free memory was 448.8 MB in the beginning and 1.2 GB in the end (delta: -756.6 MB). Peak memory consumption was 1.5 GB. Max. memory is 5.3 GB. [2018-07-22 07:06:58,754 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 309.9 MB. Free memory is still 275.5 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 2847.41 ms. Allocated memory was 309.9 MB in the beginning and 379.6 MB in the end (delta: 69.7 MB). Free memory was 240.6 MB in the beginning and 298.1 MB in the end (delta: -57.5 MB). Peak memory consumption was 97.1 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 243.31 ms. Allocated memory is still 379.6 MB. Free memory was 298.1 MB in the beginning and 258.4 MB in the end (delta: 39.7 MB). Peak memory consumption was 39.7 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 841.74 ms. Allocated memory was 379.6 MB in the beginning and 585.6 MB in the end (delta: 206.0 MB). Free memory was 258.4 MB in the beginning and 503.2 MB in the end (delta: -244.8 MB). Peak memory consumption was 75.7 MB. Max. memory is 5.3 GB. * RCFGBuilder took 9832.85 ms. Allocated memory was 585.6 MB in the beginning and 706.2 MB in the end (delta: 120.6 MB). Free memory was 503.2 MB in the beginning and 448.8 MB in the end (delta: 54.4 MB). Peak memory consumption was 286.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 196686.49 ms. Allocated memory was 706.2 MB in the beginning and 3.0 GB in the end (delta: 2.2 GB). Free memory was 448.8 MB in the beginning and 1.2 GB in the end (delta: -756.6 MB). Peak memory consumption was 1.5 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 4748]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 4748). Cancelled while BasicCegarLoop was constructing difference of abstraction (113850states) and interpolant automaton (currently 21 states, 10 states before enhancement), while ReachableStatesComputation was computing reachable states (36016 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 886 locations, 1 error locations. TIMEOUT Result, 196.5s OverallTime, 18 OverallIterations, 8 TraceHistogramMax, 114.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14122 SDtfs, 38704 SDslu, 2092 SDs, 0 SdLazy, 112540 SolverSat, 22510 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 81.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4719 GetRequests, 4613 SyntacticMatches, 18 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=165502occurred in iteration=14, 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: 20.8s AutomataMinimizationTime, 17 MinimizatonAttempts, 49226 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.6s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 16.2s InterpolantComputationTime, 28523 NumberOfCodeBlocks, 28523 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 28502 ConstructedInterpolants, 0 QuantifiedInterpolants, 102190539 SizeOfPredicates, 2 NumberOfNonLiveVariables, 5402 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 21 InterpolantComputations, 18 PerfectInterpolantSequences, 21591/22519 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_label25_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-22_07-06-58-767.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem04_label25_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-22_07-06-58-767.csv Completed graceful shutdown