/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 09:39:18,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 09:39:18,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 09:39:18,323 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 09:39:18,324 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 09:39:18,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 09:39:18,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 09:39:18,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 09:39:18,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 09:39:18,333 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 09:39:18,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 09:39:18,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 09:39:18,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 09:39:18,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 09:39:18,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 09:39:18,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 09:39:18,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 09:39:18,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 09:39:18,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 09:39:18,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 09:39:18,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 09:39:18,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 09:39:18,357 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 09:39:18,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 09:39:18,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 09:39:18,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 09:39:18,384 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 09:39:18,385 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 09:39:18,386 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 09:39:18,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 09:39:18,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 09:39:18,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 09:39:18,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 09:39:18,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 09:39:18,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 09:39:18,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 09:39:18,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 09:39:18,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 09:39:18,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 09:39:18,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 09:39:18,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 09:39:18,406 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 09:39:18,456 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 09:39:18,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 09:39:18,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 09:39:18,461 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 09:39:18,461 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 09:39:18,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 09:39:18,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 09:39:18,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 09:39:18,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 09:39:18,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 09:39:18,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 09:39:18,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 09:39:18,464 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 09:39:18,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 09:39:18,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 09:39:18,464 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 09:39:18,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 09:39:18,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 09:39:18,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 09:39:18,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 09:39:18,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 09:39:18,465 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 09:39:18,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 09:39:18,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 09:39:18,466 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 09:39:18,466 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 09:39:18,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 09:39:18,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 09:39:18,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 09:39:18,895 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 09:39:18,896 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 09:39:18,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2020-12-23 09:39:18,989 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9d4c6b217/50ab8e9217964df0b9a141256b90c80b/FLAG5916b2554 [2020-12-23 09:39:19,712 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 09:39:19,713 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2020-12-23 09:39:19,727 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9d4c6b217/50ab8e9217964df0b9a141256b90c80b/FLAG5916b2554 [2020-12-23 09:39:20,032 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9d4c6b217/50ab8e9217964df0b9a141256b90c80b [2020-12-23 09:39:20,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 09:39:20,037 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 09:39:20,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 09:39:20,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 09:39:20,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 09:39:20,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:39:20" (1/1) ... [2020-12-23 09:39:20,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@576efe3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:39:20, skipping insertion in model container [2020-12-23 09:39:20,046 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:39:20" (1/1) ... [2020-12-23 09:39:20,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 09:39:20,094 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~side1Failed_History_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side1Failed_History_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side1Failed_History_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side2Failed_History_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side2Failed_History_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side2Failed_History_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~active_side_History_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~active_side_History_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~active_side_History_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~manual_selection_History_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~manual_selection_History_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~manual_selection_History_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~manual_selection~0,] left hand side expression in assignment: lhs: VariableLHS[~cs1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~cs2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~manual_selection~0,] left hand side expression in assignment: lhs: VariableLHS[~side1~0,] left hand side expression in assignment: lhs: VariableLHS[~side2~0,] left hand side expression in assignment: lhs: VariableLHS[~manual_selection~1,] left hand side expression in assignment: lhs: VariableLHS[~side1Failed~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s1s1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s1s2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s1p_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side1_written~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side1~0,] left hand side expression in assignment: lhs: VariableLHS[~s1s1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side2~0,] left hand side expression in assignment: lhs: VariableLHS[~s2s1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~manual_selection~1,] left hand side expression in assignment: lhs: VariableLHS[~cs1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~next_state~0,] left hand side expression in assignment: lhs: VariableLHS[~next_state~0,] left hand side expression in assignment: lhs: VariableLHS[~next_state~0,] left hand side expression in assignment: lhs: VariableLHS[~next_state~0,] left hand side expression in assignment: lhs: VariableLHS[~next_state~0,] left hand side expression in assignment: lhs: VariableLHS[~s1s1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s1s2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s1p_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side1_written~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side1~1,] left hand side expression in assignment: lhs: VariableLHS[~side2~1,] left hand side expression in assignment: lhs: VariableLHS[~manual_selection~2,] left hand side expression in assignment: lhs: VariableLHS[~side2Failed~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s2s1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s2s2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s2p_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side2_written~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side1~1,] left hand side expression in assignment: lhs: VariableLHS[~s1s2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side2~1,] left hand side expression in assignment: lhs: VariableLHS[~s2s2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~manual_selection~2,] left hand side expression in assignment: lhs: VariableLHS[~cs2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~next_state~1,] left hand side expression in assignment: lhs: VariableLHS[~next_state~1,] left hand side expression in assignment: lhs: VariableLHS[~next_state~1,] left hand side expression in assignment: lhs: VariableLHS[~next_state~1,] left hand side expression in assignment: lhs: VariableLHS[~next_state~1,] left hand side expression in assignment: lhs: VariableLHS[~s2s1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s2s2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s2p_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side2_written~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~active_side~0,] left hand side expression in assignment: lhs: VariableLHS[~side1~2,] left hand side expression in assignment: lhs: VariableLHS[~side2~2,] left hand side expression in assignment: lhs: VariableLHS[~side1~2,] left hand side expression in assignment: lhs: VariableLHS[~s1p_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side2~2,] left hand side expression in assignment: lhs: VariableLHS[~s2p_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~active_side~0,] left hand side expression in assignment: lhs: VariableLHS[~active_side~0,] left hand side expression in assignment: lhs: VariableLHS[~active_side~0,] left hand side expression in assignment: lhs: VariableLHS[~active_side~0,] left hand side expression in assignment: lhs: VariableLHS[~active_side~0,] left hand side expression in assignment: lhs: VariableLHS[~active_side~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~3,] left hand side expression in assignment: lhs: VariableLHS[~tmp~3,] left hand side expression in assignment: lhs: VariableLHS[~tmp~3,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___7~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___8~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___6~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___11~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___12~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___9~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___10~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___20~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___13~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___14~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___15~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___16~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___17~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___18~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___19~0,] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] left hand side expression in assignment: lhs: VariableLHS[~side1Failed~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side2Failed~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side1_written~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side2_written~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side1Failed_History_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side1Failed_History_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side1Failed_History_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side2Failed_History_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side2Failed_History_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side2Failed_History_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~active_side_History_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~active_side_History_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~active_side_History_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~manual_selection_History_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~manual_selection_History_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~manual_selection_History_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~cs1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~cs1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~cs2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~cs2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s1s2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s1s2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s1s1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s1s1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s2s1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s2s1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s2s2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s2s2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s1p_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s1p_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s2p_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s2p_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~cs1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~cs1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~cs2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~cs2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s1s2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s1s2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s1s1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s1s1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s2s1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s2s1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s2s2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s2s2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s1p_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s1p_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s2p_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s2p_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] [2020-12-23 09:39:20,383 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c[14577,14590] [2020-12-23 09:39:20,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:39:20,407 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~side1Failed_History_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side1Failed_History_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side1Failed_History_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side2Failed_History_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side2Failed_History_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side2Failed_History_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~active_side_History_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~active_side_History_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~active_side_History_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~manual_selection_History_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~manual_selection_History_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~manual_selection_History_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~manual_selection~0,] left hand side expression in assignment: lhs: VariableLHS[~cs1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~cs2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~manual_selection~0,] left hand side expression in assignment: lhs: VariableLHS[~side1~0,] left hand side expression in assignment: lhs: VariableLHS[~side2~0,] left hand side expression in assignment: lhs: VariableLHS[~manual_selection~1,] left hand side expression in assignment: lhs: VariableLHS[~side1Failed~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s1s1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s1s2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s1p_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side1_written~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side1~0,] left hand side expression in assignment: lhs: VariableLHS[~s1s1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side2~0,] left hand side expression in assignment: lhs: VariableLHS[~s2s1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~manual_selection~1,] left hand side expression in assignment: lhs: VariableLHS[~cs1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~next_state~0,] left hand side expression in assignment: lhs: VariableLHS[~next_state~0,] left hand side expression in assignment: lhs: VariableLHS[~next_state~0,] left hand side expression in assignment: lhs: VariableLHS[~next_state~0,] left hand side expression in assignment: lhs: VariableLHS[~next_state~0,] left hand side expression in assignment: lhs: VariableLHS[~s1s1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s1s2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s1p_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side1_written~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side1~1,] left hand side expression in assignment: lhs: VariableLHS[~side2~1,] left hand side expression in assignment: lhs: VariableLHS[~manual_selection~2,] left hand side expression in assignment: lhs: VariableLHS[~side2Failed~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s2s1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s2s2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s2p_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side2_written~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side1~1,] left hand side expression in assignment: lhs: VariableLHS[~s1s2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side2~1,] left hand side expression in assignment: lhs: VariableLHS[~s2s2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~manual_selection~2,] left hand side expression in assignment: lhs: VariableLHS[~cs2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~next_state~1,] left hand side expression in assignment: lhs: VariableLHS[~next_state~1,] left hand side expression in assignment: lhs: VariableLHS[~next_state~1,] left hand side expression in assignment: lhs: VariableLHS[~next_state~1,] left hand side expression in assignment: lhs: VariableLHS[~next_state~1,] left hand side expression in assignment: lhs: VariableLHS[~s2s1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s2s2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s2p_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side2_written~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~active_side~0,] left hand side expression in assignment: lhs: VariableLHS[~side1~2,] left hand side expression in assignment: lhs: VariableLHS[~side2~2,] left hand side expression in assignment: lhs: VariableLHS[~side1~2,] left hand side expression in assignment: lhs: VariableLHS[~s1p_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side2~2,] left hand side expression in assignment: lhs: VariableLHS[~s2p_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~active_side~0,] left hand side expression in assignment: lhs: VariableLHS[~active_side~0,] left hand side expression in assignment: lhs: VariableLHS[~active_side~0,] left hand side expression in assignment: lhs: VariableLHS[~active_side~0,] left hand side expression in assignment: lhs: VariableLHS[~active_side~0,] left hand side expression in assignment: lhs: VariableLHS[~active_side~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~3,] left hand side expression in assignment: lhs: VariableLHS[~tmp~3,] left hand side expression in assignment: lhs: VariableLHS[~tmp~3,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___7~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___8~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___6~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___11~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___12~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___9~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___10~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___20~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___13~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___14~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___15~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___16~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___17~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___18~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___19~0,] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] left hand side expression in assignment: lhs: VariableLHS[~side1Failed~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side2Failed~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side1_written~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side2_written~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side1Failed_History_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side1Failed_History_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side1Failed_History_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side2Failed_History_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side2Failed_History_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~side2Failed_History_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~active_side_History_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~active_side_History_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~active_side_History_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~manual_selection_History_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~manual_selection_History_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~manual_selection_History_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~cs1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~cs1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~cs2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~cs2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s1s2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s1s2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s1s1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s1s1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s2s1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s2s1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s2s2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s2s2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s1p_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s1p_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s2p_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s2p_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~cs1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~cs1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~cs2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~cs2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s1s2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s1s2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s1s1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s1s1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s2s1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s2s1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s2s2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s2s2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s1p_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s1p_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s2p_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~s2p_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] [2020-12-23 09:39:20,563 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c[14577,14590] [2020-12-23 09:39:20,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:39:20,594 INFO L208 MainTranslator]: Completed translation [2020-12-23 09:39:20,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:39:20 WrapperNode [2020-12-23 09:39:20,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 09:39:20,596 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 09:39:20,596 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 09:39:20,596 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 09:39:20,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:39:20" (1/1) ... [2020-12-23 09:39:20,623 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:39:20" (1/1) ... [2020-12-23 09:39:20,732 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 09:39:20,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 09:39:20,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 09:39:20,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 09:39:20,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:39:20" (1/1) ... [2020-12-23 09:39:20,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:39:20" (1/1) ... [2020-12-23 09:39:20,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:39:20" (1/1) ... [2020-12-23 09:39:20,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:39:20" (1/1) ... [2020-12-23 09:39:20,810 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:39:20" (1/1) ... [2020-12-23 09:39:20,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:39:20" (1/1) ... [2020-12-23 09:39:20,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:39:20" (1/1) ... [2020-12-23 09:39:20,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 09:39:20,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 09:39:20,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 09:39:20,880 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 09:39:20,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:39:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 09:39:21,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 09:39:21,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 09:39:21,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 09:39:21,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 09:39:22,270 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 09:39:22,270 INFO L299 CfgBuilder]: Removed 121 assume(true) statements. [2020-12-23 09:39:22,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:39:22 BoogieIcfgContainer [2020-12-23 09:39:22,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 09:39:22,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 09:39:22,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 09:39:22,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 09:39:22,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 09:39:20" (1/3) ... [2020-12-23 09:39:22,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5650e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:39:22, skipping insertion in model container [2020-12-23 09:39:22,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:39:20" (2/3) ... [2020-12-23 09:39:22,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5650e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:39:22, skipping insertion in model container [2020-12-23 09:39:22,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:39:22" (3/3) ... [2020-12-23 09:39:22,313 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2020-12-23 09:39:22,334 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 09:39:22,348 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 23 error locations. [2020-12-23 09:39:22,391 INFO L253 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2020-12-23 09:39:22,428 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 09:39:22,428 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 09:39:22,428 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 09:39:22,428 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 09:39:22,429 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 09:39:22,429 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 09:39:22,429 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 09:39:22,429 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 09:39:22,468 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-12-23 09:39:22,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 09:39:22,477 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:22,478 INFO L422 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] [2020-12-23 09:39:22,479 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:39:22,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:22,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1350186974, now seen corresponding path program 1 times [2020-12-23 09:39:22,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:22,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722434274] [2020-12-23 09:39:22,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:22,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:22,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:39:22,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722434274] [2020-12-23 09:39:22,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:22,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:39:22,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540724235] [2020-12-23 09:39:22,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 09:39:22,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:22,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 09:39:22,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 09:39:22,768 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 2 states. [2020-12-23 09:39:22,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:22,875 INFO L93 Difference]: Finished difference Result 564 states and 884 transitions. [2020-12-23 09:39:22,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 09:39:22,879 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 33 [2020-12-23 09:39:22,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:22,914 INFO L225 Difference]: With dead ends: 564 [2020-12-23 09:39:22,919 INFO L226 Difference]: Without dead ends: 288 [2020-12-23 09:39:22,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 09:39:22,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-12-23 09:39:23,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2020-12-23 09:39:23,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2020-12-23 09:39:23,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 422 transitions. [2020-12-23 09:39:23,007 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 422 transitions. Word has length 33 [2020-12-23 09:39:23,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:23,007 INFO L481 AbstractCegarLoop]: Abstraction has 288 states and 422 transitions. [2020-12-23 09:39:23,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 09:39:23,008 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 422 transitions. [2020-12-23 09:39:23,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 09:39:23,010 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:23,010 INFO L422 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] [2020-12-23 09:39:23,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 09:39:23,011 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:39:23,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:23,012 INFO L82 PathProgramCache]: Analyzing trace with hash 346492376, now seen corresponding path program 1 times [2020-12-23 09:39:23,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:23,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646414893] [2020-12-23 09:39:23,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:23,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:39:23,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646414893] [2020-12-23 09:39:23,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:23,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:39:23,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093307872] [2020-12-23 09:39:23,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:39:23,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:23,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:39:23,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:39:23,117 INFO L87 Difference]: Start difference. First operand 288 states and 422 transitions. Second operand 4 states. [2020-12-23 09:39:23,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:23,194 INFO L93 Difference]: Finished difference Result 562 states and 818 transitions. [2020-12-23 09:39:23,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:39:23,194 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-12-23 09:39:23,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:23,198 INFO L225 Difference]: With dead ends: 562 [2020-12-23 09:39:23,198 INFO L226 Difference]: Without dead ends: 288 [2020-12-23 09:39:23,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:39:23,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-12-23 09:39:23,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2020-12-23 09:39:23,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2020-12-23 09:39:23,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 410 transitions. [2020-12-23 09:39:23,229 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 410 transitions. Word has length 33 [2020-12-23 09:39:23,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:23,229 INFO L481 AbstractCegarLoop]: Abstraction has 288 states and 410 transitions. [2020-12-23 09:39:23,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:39:23,229 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 410 transitions. [2020-12-23 09:39:23,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-23 09:39:23,233 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:23,234 INFO L422 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] [2020-12-23 09:39:23,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 09:39:23,235 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:39:23,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:23,236 INFO L82 PathProgramCache]: Analyzing trace with hash 792768919, now seen corresponding path program 1 times [2020-12-23 09:39:23,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:23,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361975673] [2020-12-23 09:39:23,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:23,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:23,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:39:23,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361975673] [2020-12-23 09:39:23,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:23,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:39:23,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240378963] [2020-12-23 09:39:23,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:39:23,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:23,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:39:23,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:39:23,459 INFO L87 Difference]: Start difference. First operand 288 states and 410 transitions. Second operand 3 states. [2020-12-23 09:39:23,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:23,538 INFO L93 Difference]: Finished difference Result 588 states and 846 transitions. [2020-12-23 09:39:23,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:39:23,539 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-12-23 09:39:23,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:23,543 INFO L225 Difference]: With dead ends: 588 [2020-12-23 09:39:23,543 INFO L226 Difference]: Without dead ends: 317 [2020-12-23 09:39:23,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:39:23,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-12-23 09:39:23,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 264. [2020-12-23 09:39:23,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-12-23 09:39:23,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 374 transitions. [2020-12-23 09:39:23,575 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 374 transitions. Word has length 44 [2020-12-23 09:39:23,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:23,576 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 374 transitions. [2020-12-23 09:39:23,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:39:23,576 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 374 transitions. [2020-12-23 09:39:23,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-23 09:39:23,580 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:23,581 INFO L422 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] [2020-12-23 09:39:23,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 09:39:23,581 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:39:23,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:23,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1551516849, now seen corresponding path program 1 times [2020-12-23 09:39:23,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:23,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007100113] [2020-12-23 09:39:23,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:23,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:23,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:39:23,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007100113] [2020-12-23 09:39:23,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:23,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:39:23,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879350135] [2020-12-23 09:39:23,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:39:23,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:23,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:39:23,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:39:23,744 INFO L87 Difference]: Start difference. First operand 264 states and 374 transitions. Second operand 3 states. [2020-12-23 09:39:23,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:23,783 INFO L93 Difference]: Finished difference Result 739 states and 1059 transitions. [2020-12-23 09:39:23,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:39:23,784 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-12-23 09:39:23,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:23,787 INFO L225 Difference]: With dead ends: 739 [2020-12-23 09:39:23,787 INFO L226 Difference]: Without dead ends: 492 [2020-12-23 09:39:23,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:39:23,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-12-23 09:39:23,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 299. [2020-12-23 09:39:23,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2020-12-23 09:39:23,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 426 transitions. [2020-12-23 09:39:23,807 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 426 transitions. Word has length 53 [2020-12-23 09:39:23,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:23,808 INFO L481 AbstractCegarLoop]: Abstraction has 299 states and 426 transitions. [2020-12-23 09:39:23,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:39:23,816 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 426 transitions. [2020-12-23 09:39:23,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-23 09:39:23,818 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:23,819 INFO L422 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] [2020-12-23 09:39:23,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 09:39:23,819 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:39:23,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:23,820 INFO L82 PathProgramCache]: Analyzing trace with hash -357597848, now seen corresponding path program 1 times [2020-12-23 09:39:23,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:23,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944243024] [2020-12-23 09:39:23,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:23,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:39:23,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944243024] [2020-12-23 09:39:23,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:23,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:39:23,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070830944] [2020-12-23 09:39:23,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:39:23,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:23,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:39:23,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:39:23,940 INFO L87 Difference]: Start difference. First operand 299 states and 426 transitions. Second operand 3 states. [2020-12-23 09:39:23,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:23,979 INFO L93 Difference]: Finished difference Result 819 states and 1178 transitions. [2020-12-23 09:39:23,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:39:23,980 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-12-23 09:39:23,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:23,984 INFO L225 Difference]: With dead ends: 819 [2020-12-23 09:39:23,984 INFO L226 Difference]: Without dead ends: 537 [2020-12-23 09:39:23,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:39:23,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2020-12-23 09:39:24,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 324. [2020-12-23 09:39:24,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2020-12-23 09:39:24,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 464 transitions. [2020-12-23 09:39:24,002 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 464 transitions. Word has length 54 [2020-12-23 09:39:24,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:24,003 INFO L481 AbstractCegarLoop]: Abstraction has 324 states and 464 transitions. [2020-12-23 09:39:24,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:39:24,003 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 464 transitions. [2020-12-23 09:39:24,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-23 09:39:24,005 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:24,005 INFO L422 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] [2020-12-23 09:39:24,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 09:39:24,005 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:39:24,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:24,006 INFO L82 PathProgramCache]: Analyzing trace with hash 322460522, now seen corresponding path program 1 times [2020-12-23 09:39:24,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:24,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127750273] [2020-12-23 09:39:24,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:24,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:24,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:39:24,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127750273] [2020-12-23 09:39:24,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:24,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:39:24,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146376480] [2020-12-23 09:39:24,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:39:24,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:24,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:39:24,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:39:24,136 INFO L87 Difference]: Start difference. First operand 324 states and 464 transitions. Second operand 5 states. [2020-12-23 09:39:24,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:24,440 INFO L93 Difference]: Finished difference Result 1004 states and 1449 transitions. [2020-12-23 09:39:24,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:39:24,441 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-12-23 09:39:24,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:24,449 INFO L225 Difference]: With dead ends: 1004 [2020-12-23 09:39:24,449 INFO L226 Difference]: Without dead ends: 697 [2020-12-23 09:39:24,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 09:39:24,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-12-23 09:39:24,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 418. [2020-12-23 09:39:24,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-12-23 09:39:24,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 595 transitions. [2020-12-23 09:39:24,477 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 595 transitions. Word has length 54 [2020-12-23 09:39:24,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:24,477 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 595 transitions. [2020-12-23 09:39:24,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:39:24,478 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 595 transitions. [2020-12-23 09:39:24,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-23 09:39:24,480 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:24,480 INFO L422 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] [2020-12-23 09:39:24,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 09:39:24,481 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:39:24,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:24,483 INFO L82 PathProgramCache]: Analyzing trace with hash -2009785193, now seen corresponding path program 1 times [2020-12-23 09:39:24,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:24,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242429437] [2020-12-23 09:39:24,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:24,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:39:24,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242429437] [2020-12-23 09:39:24,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:24,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:39:24,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903797700] [2020-12-23 09:39:24,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:39:24,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:24,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:39:24,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:39:24,618 INFO L87 Difference]: Start difference. First operand 418 states and 595 transitions. Second operand 5 states. [2020-12-23 09:39:24,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:24,875 INFO L93 Difference]: Finished difference Result 1008 states and 1449 transitions. [2020-12-23 09:39:24,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:39:24,875 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-12-23 09:39:24,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:24,880 INFO L225 Difference]: With dead ends: 1008 [2020-12-23 09:39:24,880 INFO L226 Difference]: Without dead ends: 701 [2020-12-23 09:39:24,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 09:39:24,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2020-12-23 09:39:24,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 426. [2020-12-23 09:39:24,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-12-23 09:39:24,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 603 transitions. [2020-12-23 09:39:24,908 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 603 transitions. Word has length 55 [2020-12-23 09:39:24,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:24,908 INFO L481 AbstractCegarLoop]: Abstraction has 426 states and 603 transitions. [2020-12-23 09:39:24,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:39:24,909 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 603 transitions. [2020-12-23 09:39:24,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-23 09:39:24,909 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:24,910 INFO L422 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] [2020-12-23 09:39:24,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 09:39:24,911 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:39:24,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:24,912 INFO L82 PathProgramCache]: Analyzing trace with hash -621480091, now seen corresponding path program 1 times [2020-12-23 09:39:24,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:24,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116339203] [2020-12-23 09:39:24,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:24,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:25,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:39:25,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116339203] [2020-12-23 09:39:25,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:25,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:39:25,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798195971] [2020-12-23 09:39:25,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:39:25,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:25,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:39:25,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:39:25,052 INFO L87 Difference]: Start difference. First operand 426 states and 603 transitions. Second operand 4 states. [2020-12-23 09:39:25,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:25,326 INFO L93 Difference]: Finished difference Result 1008 states and 1441 transitions. [2020-12-23 09:39:25,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:39:25,327 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-12-23 09:39:25,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:25,332 INFO L225 Difference]: With dead ends: 1008 [2020-12-23 09:39:25,332 INFO L226 Difference]: Without dead ends: 701 [2020-12-23 09:39:25,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:39:25,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2020-12-23 09:39:25,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 426. [2020-12-23 09:39:25,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-12-23 09:39:25,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 599 transitions. [2020-12-23 09:39:25,359 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 599 transitions. Word has length 57 [2020-12-23 09:39:25,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:25,361 INFO L481 AbstractCegarLoop]: Abstraction has 426 states and 599 transitions. [2020-12-23 09:39:25,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:39:25,361 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 599 transitions. [2020-12-23 09:39:25,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-23 09:39:25,362 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:25,363 INFO L422 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] [2020-12-23 09:39:25,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 09:39:25,363 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:39:25,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:25,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1688514268, now seen corresponding path program 1 times [2020-12-23 09:39:25,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:25,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626337243] [2020-12-23 09:39:25,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:25,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:39:25,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626337243] [2020-12-23 09:39:25,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:25,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:39:25,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188162967] [2020-12-23 09:39:25,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:39:25,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:25,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:39:25,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:39:25,467 INFO L87 Difference]: Start difference. First operand 426 states and 599 transitions. Second operand 3 states. [2020-12-23 09:39:25,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:25,517 INFO L93 Difference]: Finished difference Result 856 states and 1228 transitions. [2020-12-23 09:39:25,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:39:25,517 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2020-12-23 09:39:25,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:25,521 INFO L225 Difference]: With dead ends: 856 [2020-12-23 09:39:25,521 INFO L226 Difference]: Without dead ends: 549 [2020-12-23 09:39:25,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:39:25,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2020-12-23 09:39:25,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 421. [2020-12-23 09:39:25,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-12-23 09:39:25,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 591 transitions. [2020-12-23 09:39:25,546 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 591 transitions. Word has length 58 [2020-12-23 09:39:25,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:25,546 INFO L481 AbstractCegarLoop]: Abstraction has 421 states and 591 transitions. [2020-12-23 09:39:25,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:39:25,546 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 591 transitions. [2020-12-23 09:39:25,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-23 09:39:25,547 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:25,547 INFO L422 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] [2020-12-23 09:39:25,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 09:39:25,548 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:39:25,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:25,548 INFO L82 PathProgramCache]: Analyzing trace with hash -741802892, now seen corresponding path program 1 times [2020-12-23 09:39:25,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:25,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441959199] [2020-12-23 09:39:25,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:25,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:25,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:39:25,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441959199] [2020-12-23 09:39:25,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:25,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:39:25,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643358434] [2020-12-23 09:39:25,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:39:25,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:25,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:39:25,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:39:25,615 INFO L87 Difference]: Start difference. First operand 421 states and 591 transitions. Second operand 3 states. [2020-12-23 09:39:25,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:25,703 INFO L93 Difference]: Finished difference Result 855 states and 1227 transitions. [2020-12-23 09:39:25,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:39:25,704 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-12-23 09:39:25,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:25,708 INFO L225 Difference]: With dead ends: 855 [2020-12-23 09:39:25,708 INFO L226 Difference]: Without dead ends: 553 [2020-12-23 09:39:25,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:39:25,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2020-12-23 09:39:25,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 401. [2020-12-23 09:39:25,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-12-23 09:39:25,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 559 transitions. [2020-12-23 09:39:25,736 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 559 transitions. Word has length 62 [2020-12-23 09:39:25,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:25,736 INFO L481 AbstractCegarLoop]: Abstraction has 401 states and 559 transitions. [2020-12-23 09:39:25,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:39:25,737 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 559 transitions. [2020-12-23 09:39:25,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-23 09:39:25,738 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:25,738 INFO L422 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] [2020-12-23 09:39:25,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 09:39:25,738 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:39:25,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:25,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1449842060, now seen corresponding path program 1 times [2020-12-23 09:39:25,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:25,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973100022] [2020-12-23 09:39:25,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:25,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:25,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:39:25,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973100022] [2020-12-23 09:39:25,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:25,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:39:25,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855959893] [2020-12-23 09:39:25,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:39:25,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:25,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:39:25,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:39:25,800 INFO L87 Difference]: Start difference. First operand 401 states and 559 transitions. Second operand 3 states. [2020-12-23 09:39:25,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:25,888 INFO L93 Difference]: Finished difference Result 823 states and 1171 transitions. [2020-12-23 09:39:25,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:39:25,888 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-23 09:39:25,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:25,891 INFO L225 Difference]: With dead ends: 823 [2020-12-23 09:39:25,892 INFO L226 Difference]: Without dead ends: 541 [2020-12-23 09:39:25,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:39:25,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2020-12-23 09:39:25,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 389. [2020-12-23 09:39:25,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2020-12-23 09:39:25,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 541 transitions. [2020-12-23 09:39:25,917 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 541 transitions. Word has length 66 [2020-12-23 09:39:25,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:25,917 INFO L481 AbstractCegarLoop]: Abstraction has 389 states and 541 transitions. [2020-12-23 09:39:25,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:39:25,917 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 541 transitions. [2020-12-23 09:39:25,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 09:39:25,918 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:25,918 INFO L422 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] [2020-12-23 09:39:25,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 09:39:25,919 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:39:25,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:25,919 INFO L82 PathProgramCache]: Analyzing trace with hash -2013886397, now seen corresponding path program 1 times [2020-12-23 09:39:25,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:25,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975360294] [2020-12-23 09:39:25,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:25,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:39:25,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975360294] [2020-12-23 09:39:25,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:25,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 09:39:25,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373290118] [2020-12-23 09:39:25,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:39:25,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:25,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:39:25,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:39:25,991 INFO L87 Difference]: Start difference. First operand 389 states and 541 transitions. Second operand 6 states. [2020-12-23 09:39:26,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:26,163 INFO L93 Difference]: Finished difference Result 1429 states and 2026 transitions. [2020-12-23 09:39:26,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 09:39:26,164 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-12-23 09:39:26,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:26,170 INFO L225 Difference]: With dead ends: 1429 [2020-12-23 09:39:26,171 INFO L226 Difference]: Without dead ends: 1159 [2020-12-23 09:39:26,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-23 09:39:26,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2020-12-23 09:39:26,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 410. [2020-12-23 09:39:26,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2020-12-23 09:39:26,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 565 transitions. [2020-12-23 09:39:26,207 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 565 transitions. Word has length 67 [2020-12-23 09:39:26,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:26,208 INFO L481 AbstractCegarLoop]: Abstraction has 410 states and 565 transitions. [2020-12-23 09:39:26,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:39:26,208 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 565 transitions. [2020-12-23 09:39:26,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-23 09:39:26,209 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:26,209 INFO L422 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] [2020-12-23 09:39:26,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 09:39:26,209 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:39:26,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:26,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1216909730, now seen corresponding path program 1 times [2020-12-23 09:39:26,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:26,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211082016] [2020-12-23 09:39:26,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:26,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:26,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:39:26,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211082016] [2020-12-23 09:39:26,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:26,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:39:26,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499021175] [2020-12-23 09:39:26,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:39:26,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:26,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:39:26,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:39:26,299 INFO L87 Difference]: Start difference. First operand 410 states and 565 transitions. Second operand 3 states. [2020-12-23 09:39:26,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:26,405 INFO L93 Difference]: Finished difference Result 840 states and 1187 transitions. [2020-12-23 09:39:26,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:39:26,406 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-23 09:39:26,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:26,409 INFO L225 Difference]: With dead ends: 840 [2020-12-23 09:39:26,409 INFO L226 Difference]: Without dead ends: 570 [2020-12-23 09:39:26,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:39:26,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-12-23 09:39:26,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 390. [2020-12-23 09:39:26,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2020-12-23 09:39:26,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 533 transitions. [2020-12-23 09:39:26,446 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 533 transitions. Word has length 69 [2020-12-23 09:39:26,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:26,446 INFO L481 AbstractCegarLoop]: Abstraction has 390 states and 533 transitions. [2020-12-23 09:39:26,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:39:26,446 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 533 transitions. [2020-12-23 09:39:26,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-23 09:39:26,447 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:26,447 INFO L422 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] [2020-12-23 09:39:26,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 09:39:26,448 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:39:26,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:26,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1979952454, now seen corresponding path program 1 times [2020-12-23 09:39:26,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:26,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361952928] [2020-12-23 09:39:26,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:26,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:39:26,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361952928] [2020-12-23 09:39:26,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:26,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:39:26,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431865436] [2020-12-23 09:39:26,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:39:26,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:26,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:39:26,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:39:26,546 INFO L87 Difference]: Start difference. First operand 390 states and 533 transitions. Second operand 3 states. [2020-12-23 09:39:26,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:26,638 INFO L93 Difference]: Finished difference Result 808 states and 1131 transitions. [2020-12-23 09:39:26,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:39:26,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-23 09:39:26,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:26,642 INFO L225 Difference]: With dead ends: 808 [2020-12-23 09:39:26,642 INFO L226 Difference]: Without dead ends: 558 [2020-12-23 09:39:26,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:39:26,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2020-12-23 09:39:26,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 378. [2020-12-23 09:39:26,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-12-23 09:39:26,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 515 transitions. [2020-12-23 09:39:26,680 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 515 transitions. Word has length 73 [2020-12-23 09:39:26,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:26,681 INFO L481 AbstractCegarLoop]: Abstraction has 378 states and 515 transitions. [2020-12-23 09:39:26,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:39:26,681 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 515 transitions. [2020-12-23 09:39:26,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-23 09:39:26,682 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:26,682 INFO L422 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] [2020-12-23 09:39:26,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 09:39:26,683 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:39:26,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:26,684 INFO L82 PathProgramCache]: Analyzing trace with hash -797041989, now seen corresponding path program 1 times [2020-12-23 09:39:26,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:26,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800733895] [2020-12-23 09:39:26,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:26,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:39:26,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800733895] [2020-12-23 09:39:26,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:26,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 09:39:26,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057031364] [2020-12-23 09:39:26,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:39:26,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:26,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:39:26,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:39:26,924 INFO L87 Difference]: Start difference. First operand 378 states and 515 transitions. Second operand 6 states. [2020-12-23 09:39:27,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:27,242 INFO L93 Difference]: Finished difference Result 1077 states and 1506 transitions. [2020-12-23 09:39:27,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 09:39:27,243 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-12-23 09:39:27,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:27,250 INFO L225 Difference]: With dead ends: 1077 [2020-12-23 09:39:27,250 INFO L226 Difference]: Without dead ends: 839 [2020-12-23 09:39:27,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-23 09:39:27,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2020-12-23 09:39:27,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 403. [2020-12-23 09:39:27,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-12-23 09:39:27,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 550 transitions. [2020-12-23 09:39:27,308 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 550 transitions. Word has length 76 [2020-12-23 09:39:27,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:27,308 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 550 transitions. [2020-12-23 09:39:27,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:39:27,309 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 550 transitions. [2020-12-23 09:39:27,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-23 09:39:27,310 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:27,311 INFO L422 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] [2020-12-23 09:39:27,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 09:39:27,311 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:39:27,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:27,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1479160478, now seen corresponding path program 1 times [2020-12-23 09:39:27,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:27,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030561518] [2020-12-23 09:39:27,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:27,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:27,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:39:27,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030561518] [2020-12-23 09:39:27,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:27,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 09:39:27,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123638949] [2020-12-23 09:39:27,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:39:27,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:27,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:39:27,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:39:27,534 INFO L87 Difference]: Start difference. First operand 403 states and 550 transitions. Second operand 7 states. [2020-12-23 09:39:27,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:27,983 INFO L93 Difference]: Finished difference Result 1401 states and 1948 transitions. [2020-12-23 09:39:27,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 09:39:27,983 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 76 [2020-12-23 09:39:27,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:27,989 INFO L225 Difference]: With dead ends: 1401 [2020-12-23 09:39:27,989 INFO L226 Difference]: Without dead ends: 1145 [2020-12-23 09:39:27,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-23 09:39:27,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2020-12-23 09:39:28,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 431. [2020-12-23 09:39:28,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-12-23 09:39:28,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 581 transitions. [2020-12-23 09:39:28,040 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 581 transitions. Word has length 76 [2020-12-23 09:39:28,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:28,040 INFO L481 AbstractCegarLoop]: Abstraction has 431 states and 581 transitions. [2020-12-23 09:39:28,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:39:28,040 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 581 transitions. [2020-12-23 09:39:28,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-23 09:39:28,041 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:28,041 INFO L422 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] [2020-12-23 09:39:28,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 09:39:28,042 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:39:28,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:28,043 INFO L82 PathProgramCache]: Analyzing trace with hash 532768487, now seen corresponding path program 1 times [2020-12-23 09:39:28,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:28,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836526533] [2020-12-23 09:39:28,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:28,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:39:28,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836526533] [2020-12-23 09:39:28,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:28,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:39:28,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732846855] [2020-12-23 09:39:28,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:39:28,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:28,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:39:28,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:39:28,112 INFO L87 Difference]: Start difference. First operand 431 states and 581 transitions. Second operand 4 states. [2020-12-23 09:39:28,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:28,288 INFO L93 Difference]: Finished difference Result 1111 states and 1515 transitions. [2020-12-23 09:39:28,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:39:28,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-12-23 09:39:28,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:28,294 INFO L225 Difference]: With dead ends: 1111 [2020-12-23 09:39:28,294 INFO L226 Difference]: Without dead ends: 849 [2020-12-23 09:39:28,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:39:28,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2020-12-23 09:39:28,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 652. [2020-12-23 09:39:28,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2020-12-23 09:39:28,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 869 transitions. [2020-12-23 09:39:28,375 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 869 transitions. Word has length 76 [2020-12-23 09:39:28,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:28,376 INFO L481 AbstractCegarLoop]: Abstraction has 652 states and 869 transitions. [2020-12-23 09:39:28,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:39:28,376 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 869 transitions. [2020-12-23 09:39:28,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-23 09:39:28,377 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:28,377 INFO L422 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] [2020-12-23 09:39:28,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 09:39:28,378 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:39:28,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:28,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1675634663, now seen corresponding path program 1 times [2020-12-23 09:39:28,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:28,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368008849] [2020-12-23 09:39:28,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:28,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:39:28,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368008849] [2020-12-23 09:39:28,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:28,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:39:28,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013881484] [2020-12-23 09:39:28,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:39:28,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:28,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:39:28,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:39:28,451 INFO L87 Difference]: Start difference. First operand 652 states and 869 transitions. Second operand 3 states. [2020-12-23 09:39:28,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:28,569 INFO L93 Difference]: Finished difference Result 1135 states and 1547 transitions. [2020-12-23 09:39:28,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:39:28,569 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-23 09:39:28,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:28,573 INFO L225 Difference]: With dead ends: 1135 [2020-12-23 09:39:28,573 INFO L226 Difference]: Without dead ends: 758 [2020-12-23 09:39:28,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:39:28,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2020-12-23 09:39:28,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 648. [2020-12-23 09:39:28,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2020-12-23 09:39:28,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 862 transitions. [2020-12-23 09:39:28,638 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 862 transitions. Word has length 77 [2020-12-23 09:39:28,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:28,638 INFO L481 AbstractCegarLoop]: Abstraction has 648 states and 862 transitions. [2020-12-23 09:39:28,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:39:28,639 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 862 transitions. [2020-12-23 09:39:28,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 09:39:28,640 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:28,640 INFO L422 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] [2020-12-23 09:39:28,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-23 09:39:28,640 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:39:28,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:28,641 INFO L82 PathProgramCache]: Analyzing trace with hash -43406846, now seen corresponding path program 1 times [2020-12-23 09:39:28,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:28,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767732138] [2020-12-23 09:39:28,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:28,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:28,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:39:28,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767732138] [2020-12-23 09:39:28,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:28,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:39:28,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105634557] [2020-12-23 09:39:28,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:39:28,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:28,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:39:28,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:39:28,704 INFO L87 Difference]: Start difference. First operand 648 states and 862 transitions. Second operand 4 states. [2020-12-23 09:39:28,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:28,897 INFO L93 Difference]: Finished difference Result 1449 states and 1951 transitions. [2020-12-23 09:39:28,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:39:28,897 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-12-23 09:39:28,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:28,903 INFO L225 Difference]: With dead ends: 1449 [2020-12-23 09:39:28,904 INFO L226 Difference]: Without dead ends: 1062 [2020-12-23 09:39:28,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:39:28,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2020-12-23 09:39:28,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 867. [2020-12-23 09:39:28,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 867 states. [2020-12-23 09:39:28,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1144 transitions. [2020-12-23 09:39:28,995 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1144 transitions. Word has length 78 [2020-12-23 09:39:28,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:28,995 INFO L481 AbstractCegarLoop]: Abstraction has 867 states and 1144 transitions. [2020-12-23 09:39:28,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:39:28,996 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1144 transitions. [2020-12-23 09:39:28,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 09:39:28,997 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:28,997 INFO L422 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] [2020-12-23 09:39:28,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-23 09:39:28,998 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:39:28,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:28,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1923184217, now seen corresponding path program 1 times [2020-12-23 09:39:28,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:28,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262227836] [2020-12-23 09:39:28,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:29,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:29,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:39:29,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262227836] [2020-12-23 09:39:29,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:29,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:39:29,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510168049] [2020-12-23 09:39:29,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:39:29,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:29,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:39:29,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:39:29,036 INFO L87 Difference]: Start difference. First operand 867 states and 1144 transitions. Second operand 3 states. [2020-12-23 09:39:29,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:29,298 INFO L93 Difference]: Finished difference Result 2023 states and 2687 transitions. [2020-12-23 09:39:29,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:39:29,299 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-23 09:39:29,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:29,308 INFO L225 Difference]: With dead ends: 2023 [2020-12-23 09:39:29,308 INFO L226 Difference]: Without dead ends: 1415 [2020-12-23 09:39:29,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:39:29,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2020-12-23 09:39:29,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 869. [2020-12-23 09:39:29,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 869 states. [2020-12-23 09:39:29,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1146 transitions. [2020-12-23 09:39:29,407 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1146 transitions. Word has length 78 [2020-12-23 09:39:29,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:29,407 INFO L481 AbstractCegarLoop]: Abstraction has 869 states and 1146 transitions. [2020-12-23 09:39:29,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:39:29,407 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1146 transitions. [2020-12-23 09:39:29,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 09:39:29,409 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:29,409 INFO L422 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] [2020-12-23 09:39:29,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-23 09:39:29,409 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:39:29,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:29,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1579042436, now seen corresponding path program 1 times [2020-12-23 09:39:29,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:29,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471794933] [2020-12-23 09:39:29,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:29,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:29,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:39:29,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471794933] [2020-12-23 09:39:29,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:29,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 09:39:29,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720602827] [2020-12-23 09:39:29,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:39:29,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:29,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:39:29,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:39:29,522 INFO L87 Difference]: Start difference. First operand 869 states and 1146 transitions. Second operand 6 states. [2020-12-23 09:39:30,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:30,146 INFO L93 Difference]: Finished difference Result 3225 states and 4324 transitions. [2020-12-23 09:39:30,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 09:39:30,147 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-12-23 09:39:30,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:30,161 INFO L225 Difference]: With dead ends: 3225 [2020-12-23 09:39:30,162 INFO L226 Difference]: Without dead ends: 2706 [2020-12-23 09:39:30,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-23 09:39:30,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2020-12-23 09:39:30,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 995. [2020-12-23 09:39:30,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-12-23 09:39:30,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1293 transitions. [2020-12-23 09:39:30,299 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1293 transitions. Word has length 78 [2020-12-23 09:39:30,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:30,300 INFO L481 AbstractCegarLoop]: Abstraction has 995 states and 1293 transitions. [2020-12-23 09:39:30,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:39:30,300 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1293 transitions. [2020-12-23 09:39:30,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-23 09:39:30,302 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:30,302 INFO L422 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] [2020-12-23 09:39:30,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-23 09:39:30,302 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:39:30,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:30,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1296090681, now seen corresponding path program 1 times [2020-12-23 09:39:30,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:30,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483764713] [2020-12-23 09:39:30,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:30,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:39:30,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483764713] [2020-12-23 09:39:30,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:30,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:39:30,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030456327] [2020-12-23 09:39:30,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:39:30,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:30,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:39:30,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:39:30,364 INFO L87 Difference]: Start difference. First operand 995 states and 1293 transitions. Second operand 4 states. [2020-12-23 09:39:30,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:30,625 INFO L93 Difference]: Finished difference Result 2390 states and 3153 transitions. [2020-12-23 09:39:30,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:39:30,627 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-12-23 09:39:30,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:30,636 INFO L225 Difference]: With dead ends: 2390 [2020-12-23 09:39:30,637 INFO L226 Difference]: Without dead ends: 1823 [2020-12-23 09:39:30,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:39:30,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1823 states. [2020-12-23 09:39:30,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1823 to 1350. [2020-12-23 09:39:30,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1350 states. [2020-12-23 09:39:30,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 1750 transitions. [2020-12-23 09:39:30,811 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 1750 transitions. Word has length 79 [2020-12-23 09:39:30,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:30,812 INFO L481 AbstractCegarLoop]: Abstraction has 1350 states and 1750 transitions. [2020-12-23 09:39:30,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:39:30,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 1750 transitions. [2020-12-23 09:39:30,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-23 09:39:30,814 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:30,814 INFO L422 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] [2020-12-23 09:39:30,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-23 09:39:30,814 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:39:30,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:30,815 INFO L82 PathProgramCache]: Analyzing trace with hash -127959653, now seen corresponding path program 1 times [2020-12-23 09:39:30,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:30,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524199767] [2020-12-23 09:39:30,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:30,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:39:30,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524199767] [2020-12-23 09:39:30,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:30,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:39:30,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316417690] [2020-12-23 09:39:30,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:39:30,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:30,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:39:30,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:39:30,893 INFO L87 Difference]: Start difference. First operand 1350 states and 1750 transitions. Second operand 4 states. [2020-12-23 09:39:31,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:31,100 INFO L93 Difference]: Finished difference Result 2688 states and 3512 transitions. [2020-12-23 09:39:31,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:39:31,101 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-12-23 09:39:31,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:31,109 INFO L225 Difference]: With dead ends: 2688 [2020-12-23 09:39:31,110 INFO L226 Difference]: Without dead ends: 1414 [2020-12-23 09:39:31,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:39:31,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2020-12-23 09:39:31,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1054. [2020-12-23 09:39:31,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1054 states. [2020-12-23 09:39:31,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1381 transitions. [2020-12-23 09:39:31,245 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1381 transitions. Word has length 80 [2020-12-23 09:39:31,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:31,245 INFO L481 AbstractCegarLoop]: Abstraction has 1054 states and 1381 transitions. [2020-12-23 09:39:31,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:39:31,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1381 transitions. [2020-12-23 09:39:31,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-23 09:39:31,247 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:31,247 INFO L422 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] [2020-12-23 09:39:31,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-23 09:39:31,247 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:39:31,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:31,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1884673237, now seen corresponding path program 1 times [2020-12-23 09:39:31,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:31,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789830467] [2020-12-23 09:39:31,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:31,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:31,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:39:31,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789830467] [2020-12-23 09:39:31,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:31,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 09:39:31,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89717751] [2020-12-23 09:39:31,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:39:31,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:31,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:39:31,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:39:31,400 INFO L87 Difference]: Start difference. First operand 1054 states and 1381 transitions. Second operand 6 states. [2020-12-23 09:39:31,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:31,836 INFO L93 Difference]: Finished difference Result 2876 states and 3890 transitions. [2020-12-23 09:39:31,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 09:39:31,837 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-12-23 09:39:31,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:31,847 INFO L225 Difference]: With dead ends: 2876 [2020-12-23 09:39:31,847 INFO L226 Difference]: Without dead ends: 2069 [2020-12-23 09:39:31,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-23 09:39:31,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2020-12-23 09:39:31,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1054. [2020-12-23 09:39:31,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1054 states. [2020-12-23 09:39:31,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1376 transitions. [2020-12-23 09:39:31,975 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1376 transitions. Word has length 81 [2020-12-23 09:39:31,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:31,975 INFO L481 AbstractCegarLoop]: Abstraction has 1054 states and 1376 transitions. [2020-12-23 09:39:31,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:39:31,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1376 transitions. [2020-12-23 09:39:31,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-23 09:39:31,977 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:31,977 INFO L422 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] [2020-12-23 09:39:31,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-23 09:39:31,978 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:39:31,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:31,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1245633243, now seen corresponding path program 1 times [2020-12-23 09:39:31,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:31,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213410035] [2020-12-23 09:39:31,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:32,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:39:32,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213410035] [2020-12-23 09:39:32,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:32,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:39:32,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151034773] [2020-12-23 09:39:32,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:39:32,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:32,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:39:32,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:39:32,019 INFO L87 Difference]: Start difference. First operand 1054 states and 1376 transitions. Second operand 3 states. [2020-12-23 09:39:32,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:32,329 INFO L93 Difference]: Finished difference Result 2486 states and 3266 transitions. [2020-12-23 09:39:32,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:39:32,330 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-12-23 09:39:32,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:32,337 INFO L225 Difference]: With dead ends: 2486 [2020-12-23 09:39:32,337 INFO L226 Difference]: Without dead ends: 1582 [2020-12-23 09:39:32,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:39:32,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2020-12-23 09:39:32,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1060. [2020-12-23 09:39:32,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1060 states. [2020-12-23 09:39:32,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1382 transitions. [2020-12-23 09:39:32,448 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1382 transitions. Word has length 82 [2020-12-23 09:39:32,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:32,449 INFO L481 AbstractCegarLoop]: Abstraction has 1060 states and 1382 transitions. [2020-12-23 09:39:32,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:39:32,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1382 transitions. [2020-12-23 09:39:32,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-23 09:39:32,450 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:32,450 INFO L422 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] [2020-12-23 09:39:32,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-23 09:39:32,451 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:39:32,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:32,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1936137551, now seen corresponding path program 1 times [2020-12-23 09:39:32,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:32,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110494413] [2020-12-23 09:39:32,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:32,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:39:32,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110494413] [2020-12-23 09:39:32,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:32,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:39:32,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987380196] [2020-12-23 09:39:32,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:39:32,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:32,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:39:32,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:39:32,524 INFO L87 Difference]: Start difference. First operand 1060 states and 1382 transitions. Second operand 4 states. [2020-12-23 09:39:32,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:32,736 INFO L93 Difference]: Finished difference Result 2430 states and 3186 transitions. [2020-12-23 09:39:32,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:39:32,737 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-12-23 09:39:32,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:32,744 INFO L225 Difference]: With dead ends: 2430 [2020-12-23 09:39:32,744 INFO L226 Difference]: Without dead ends: 1470 [2020-12-23 09:39:32,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:39:32,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2020-12-23 09:39:32,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1000. [2020-12-23 09:39:32,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2020-12-23 09:39:32,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1300 transitions. [2020-12-23 09:39:32,903 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1300 transitions. Word has length 82 [2020-12-23 09:39:32,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:32,903 INFO L481 AbstractCegarLoop]: Abstraction has 1000 states and 1300 transitions. [2020-12-23 09:39:32,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:39:32,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1300 transitions. [2020-12-23 09:39:32,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-23 09:39:32,904 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:32,905 INFO L422 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] [2020-12-23 09:39:32,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-23 09:39:32,905 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:39:32,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:32,906 INFO L82 PathProgramCache]: Analyzing trace with hash 916931346, now seen corresponding path program 1 times [2020-12-23 09:39:32,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:32,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486131704] [2020-12-23 09:39:32,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:33,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:39:33,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486131704] [2020-12-23 09:39:33,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:33,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 09:39:33,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197782675] [2020-12-23 09:39:33,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:39:33,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:33,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:39:33,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:39:33,091 INFO L87 Difference]: Start difference. First operand 1000 states and 1300 transitions. Second operand 6 states. [2020-12-23 09:39:33,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:33,694 INFO L93 Difference]: Finished difference Result 3287 states and 4470 transitions. [2020-12-23 09:39:33,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 09:39:33,694 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2020-12-23 09:39:33,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:33,707 INFO L225 Difference]: With dead ends: 3287 [2020-12-23 09:39:33,707 INFO L226 Difference]: Without dead ends: 2486 [2020-12-23 09:39:33,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-23 09:39:33,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2486 states. [2020-12-23 09:39:33,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2486 to 988. [2020-12-23 09:39:33,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 988 states. [2020-12-23 09:39:33,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1288 transitions. [2020-12-23 09:39:33,896 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1288 transitions. Word has length 84 [2020-12-23 09:39:33,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:33,896 INFO L481 AbstractCegarLoop]: Abstraction has 988 states and 1288 transitions. [2020-12-23 09:39:33,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:39:33,896 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1288 transitions. [2020-12-23 09:39:33,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-23 09:39:33,897 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:33,897 INFO L422 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] [2020-12-23 09:39:33,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-23 09:39:33,898 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:39:33,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:33,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1263730727, now seen corresponding path program 1 times [2020-12-23 09:39:33,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:33,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391795357] [2020-12-23 09:39:33,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:33,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:33,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:39:33,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391795357] [2020-12-23 09:39:33,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:33,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 09:39:33,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114268009] [2020-12-23 09:39:33,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:39:33,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:33,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:39:33,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:39:33,994 INFO L87 Difference]: Start difference. First operand 988 states and 1288 transitions. Second operand 6 states. [2020-12-23 09:39:34,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:34,332 INFO L93 Difference]: Finished difference Result 1775 states and 2352 transitions. [2020-12-23 09:39:34,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 09:39:34,332 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2020-12-23 09:39:34,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:34,338 INFO L225 Difference]: With dead ends: 1775 [2020-12-23 09:39:34,338 INFO L226 Difference]: Without dead ends: 1773 [2020-12-23 09:39:34,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-12-23 09:39:34,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1773 states. [2020-12-23 09:39:34,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1773 to 990. [2020-12-23 09:39:34,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 990 states. [2020-12-23 09:39:34,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1290 transitions. [2020-12-23 09:39:34,476 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1290 transitions. Word has length 84 [2020-12-23 09:39:34,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:34,477 INFO L481 AbstractCegarLoop]: Abstraction has 990 states and 1290 transitions. [2020-12-23 09:39:34,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:39:34,477 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1290 transitions. [2020-12-23 09:39:34,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-23 09:39:34,478 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:34,478 INFO L422 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] [2020-12-23 09:39:34,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-23 09:39:34,479 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:39:34,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:34,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1741086502, now seen corresponding path program 1 times [2020-12-23 09:39:34,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:34,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026109930] [2020-12-23 09:39:34,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:34,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:39:34,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026109930] [2020-12-23 09:39:34,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:34,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 09:39:34,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005732705] [2020-12-23 09:39:34,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:39:34,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:34,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:39:34,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:39:34,571 INFO L87 Difference]: Start difference. First operand 990 states and 1290 transitions. Second operand 6 states. [2020-12-23 09:39:34,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:34,933 INFO L93 Difference]: Finished difference Result 2372 states and 3240 transitions. [2020-12-23 09:39:34,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 09:39:34,934 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-12-23 09:39:34,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:34,938 INFO L225 Difference]: With dead ends: 2372 [2020-12-23 09:39:34,939 INFO L226 Difference]: Without dead ends: 1569 [2020-12-23 09:39:34,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-12-23 09:39:34,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-12-23 09:39:35,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 996. [2020-12-23 09:39:35,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 996 states. [2020-12-23 09:39:35,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1296 transitions. [2020-12-23 09:39:35,085 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1296 transitions. Word has length 85 [2020-12-23 09:39:35,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:35,085 INFO L481 AbstractCegarLoop]: Abstraction has 996 states and 1296 transitions. [2020-12-23 09:39:35,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:39:35,085 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1296 transitions. [2020-12-23 09:39:35,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-23 09:39:35,088 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:35,088 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:39:35,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-23 09:39:35,089 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:39:35,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:35,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1322235893, now seen corresponding path program 1 times [2020-12-23 09:39:35,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:35,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440626302] [2020-12-23 09:39:35,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:35,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:35,269 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:39:35,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440626302] [2020-12-23 09:39:35,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743499258] [2020-12-23 09:39:35,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:39:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:35,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-23 09:39:35,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:39:35,914 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 09:39:35,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 09:39:35,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2020-12-23 09:39:35,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240003488] [2020-12-23 09:39:35,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:39:35,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:35,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:39:35,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-12-23 09:39:35,920 INFO L87 Difference]: Start difference. First operand 996 states and 1296 transitions. Second operand 6 states. [2020-12-23 09:39:36,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:36,425 INFO L93 Difference]: Finished difference Result 2577 states and 3491 transitions. [2020-12-23 09:39:36,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 09:39:36,426 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2020-12-23 09:39:36,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:36,431 INFO L225 Difference]: With dead ends: 2577 [2020-12-23 09:39:36,431 INFO L226 Difference]: Without dead ends: 1768 [2020-12-23 09:39:36,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-12-23 09:39:36,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2020-12-23 09:39:36,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 996. [2020-12-23 09:39:36,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 996 states. [2020-12-23 09:39:36,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1295 transitions. [2020-12-23 09:39:36,605 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1295 transitions. Word has length 134 [2020-12-23 09:39:36,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:36,606 INFO L481 AbstractCegarLoop]: Abstraction has 996 states and 1295 transitions. [2020-12-23 09:39:36,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:39:36,606 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1295 transitions. [2020-12-23 09:39:36,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-23 09:39:36,608 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:36,609 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:39:36,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:39:36,825 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:39:36,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:36,826 INFO L82 PathProgramCache]: Analyzing trace with hash 418498608, now seen corresponding path program 1 times [2020-12-23 09:39:36,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:36,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677275011] [2020-12-23 09:39:36,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:36,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:37,140 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:39:37,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677275011] [2020-12-23 09:39:37,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794533083] [2020-12-23 09:39:37,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:39:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:37,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-23 09:39:37,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:39:37,749 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:39:37,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:39:37,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-12-23 09:39:37,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128138543] [2020-12-23 09:39:37,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 09:39:37,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:37,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 09:39:37,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-12-23 09:39:37,752 INFO L87 Difference]: Start difference. First operand 996 states and 1295 transitions. Second operand 13 states. [2020-12-23 09:39:52,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:52,392 INFO L93 Difference]: Finished difference Result 16590 states and 22142 transitions. [2020-12-23 09:39:52,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2020-12-23 09:39:52,392 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 138 [2020-12-23 09:39:52,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:52,426 INFO L225 Difference]: With dead ends: 16590 [2020-12-23 09:39:52,426 INFO L226 Difference]: Without dead ends: 15787 [2020-12-23 09:39:52,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29009 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=8289, Invalid=55467, Unknown=0, NotChecked=0, Total=63756 [2020-12-23 09:39:52,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15787 states. [2020-12-23 09:39:52,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15787 to 2702. [2020-12-23 09:39:52,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2702 states. [2020-12-23 09:39:52,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2702 states to 2702 states and 3521 transitions. [2020-12-23 09:39:52,969 INFO L78 Accepts]: Start accepts. Automaton has 2702 states and 3521 transitions. Word has length 138 [2020-12-23 09:39:52,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:52,969 INFO L481 AbstractCegarLoop]: Abstraction has 2702 states and 3521 transitions. [2020-12-23 09:39:52,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 09:39:52,969 INFO L276 IsEmpty]: Start isEmpty. Operand 2702 states and 3521 transitions. [2020-12-23 09:39:52,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-23 09:39:52,975 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:52,976 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:39:53,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:39:53,190 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:39:53,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:53,191 INFO L82 PathProgramCache]: Analyzing trace with hash 609172982, now seen corresponding path program 1 times [2020-12-23 09:39:53,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:53,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169451924] [2020-12-23 09:39:53,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:53,407 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:39:53,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169451924] [2020-12-23 09:39:53,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425981910] [2020-12-23 09:39:53,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:39:53,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:53,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-23 09:39:53,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:39:53,883 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:39:53,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 09:39:53,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 9 [2020-12-23 09:39:53,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444499889] [2020-12-23 09:39:53,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:39:53,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:53,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:39:53,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-23 09:39:53,886 INFO L87 Difference]: Start difference. First operand 2702 states and 3521 transitions. Second operand 6 states. [2020-12-23 09:39:55,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:55,020 INFO L93 Difference]: Finished difference Result 7226 states and 9804 transitions. [2020-12-23 09:39:55,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 09:39:55,021 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2020-12-23 09:39:55,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:55,031 INFO L225 Difference]: With dead ends: 7226 [2020-12-23 09:39:55,031 INFO L226 Difference]: Without dead ends: 4751 [2020-12-23 09:39:55,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 141 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-12-23 09:39:55,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4751 states. [2020-12-23 09:39:55,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4751 to 2359. [2020-12-23 09:39:55,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2359 states. [2020-12-23 09:39:55,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2359 states to 2359 states and 3080 transitions. [2020-12-23 09:39:55,502 INFO L78 Accepts]: Start accepts. Automaton has 2359 states and 3080 transitions. Word has length 139 [2020-12-23 09:39:55,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:55,502 INFO L481 AbstractCegarLoop]: Abstraction has 2359 states and 3080 transitions. [2020-12-23 09:39:55,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:39:55,502 INFO L276 IsEmpty]: Start isEmpty. Operand 2359 states and 3080 transitions. [2020-12-23 09:39:55,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-12-23 09:39:55,508 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:55,508 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:39:55,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:39:55,723 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:39:55,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:55,724 INFO L82 PathProgramCache]: Analyzing trace with hash -88630296, now seen corresponding path program 1 times [2020-12-23 09:39:55,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:55,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984231918] [2020-12-23 09:39:55,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:55,867 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-23 09:39:55,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984231918] [2020-12-23 09:39:55,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:55,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 09:39:55,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343191951] [2020-12-23 09:39:55,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:39:55,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:55,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:39:55,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:39:55,869 INFO L87 Difference]: Start difference. First operand 2359 states and 3080 transitions. Second operand 7 states. [2020-12-23 09:39:58,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:58,082 INFO L93 Difference]: Finished difference Result 13935 states and 18722 transitions. [2020-12-23 09:39:58,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-23 09:39:58,083 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-12-23 09:39:58,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:58,107 INFO L225 Difference]: With dead ends: 13935 [2020-12-23 09:39:58,107 INFO L226 Difference]: Without dead ends: 11843 [2020-12-23 09:39:58,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2020-12-23 09:39:58,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11843 states. [2020-12-23 09:39:58,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11843 to 2815. [2020-12-23 09:39:58,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2815 states. [2020-12-23 09:39:58,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 3610 transitions. [2020-12-23 09:39:58,632 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 3610 transitions. Word has length 140 [2020-12-23 09:39:58,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:58,632 INFO L481 AbstractCegarLoop]: Abstraction has 2815 states and 3610 transitions. [2020-12-23 09:39:58,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:39:58,632 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 3610 transitions. [2020-12-23 09:39:58,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-12-23 09:39:58,639 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:58,639 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:39:58,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-23 09:39:58,640 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:39:58,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:58,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1407740115, now seen corresponding path program 1 times [2020-12-23 09:39:58,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:58,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040294863] [2020-12-23 09:39:58,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:58,845 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:39:58,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040294863] [2020-12-23 09:39:58,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053907923] [2020-12-23 09:39:58,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:39:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:59,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-23 09:39:59,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:39:59,214 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-23 09:39:59,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:39:59,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2020-12-23 09:39:59,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575280865] [2020-12-23 09:39:59,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 09:39:59,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:59,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 09:39:59,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-12-23 09:39:59,216 INFO L87 Difference]: Start difference. First operand 2815 states and 3610 transitions. Second operand 11 states. [2020-12-23 09:40:02,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:02,080 INFO L93 Difference]: Finished difference Result 8010 states and 10448 transitions. [2020-12-23 09:40:02,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-23 09:40:02,081 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 142 [2020-12-23 09:40:02,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:02,091 INFO L225 Difference]: With dead ends: 8010 [2020-12-23 09:40:02,091 INFO L226 Difference]: Without dead ends: 5259 [2020-12-23 09:40:02,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=525, Invalid=1545, Unknown=0, NotChecked=0, Total=2070 [2020-12-23 09:40:02,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5259 states. [2020-12-23 09:40:02,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5259 to 2340. [2020-12-23 09:40:02,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2340 states. [2020-12-23 09:40:02,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2340 states to 2340 states and 3003 transitions. [2020-12-23 09:40:02,575 INFO L78 Accepts]: Start accepts. Automaton has 2340 states and 3003 transitions. Word has length 142 [2020-12-23 09:40:02,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:02,575 INFO L481 AbstractCegarLoop]: Abstraction has 2340 states and 3003 transitions. [2020-12-23 09:40:02,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 09:40:02,576 INFO L276 IsEmpty]: Start isEmpty. Operand 2340 states and 3003 transitions. [2020-12-23 09:40:02,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-12-23 09:40:02,581 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:02,581 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:02,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:40:02,796 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:02,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:02,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1089554557, now seen corresponding path program 1 times [2020-12-23 09:40:02,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:02,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490944455] [2020-12-23 09:40:02,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:02,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:03,035 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:03,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490944455] [2020-12-23 09:40:03,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034870102] [2020-12-23 09:40:03,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:40:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:03,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 09:40:03,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:40:03,320 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 09:40:03,657 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:03,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:40:03,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 15 [2020-12-23 09:40:03,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766418606] [2020-12-23 09:40:03,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-23 09:40:03,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:03,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-23 09:40:03,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-12-23 09:40:03,659 INFO L87 Difference]: Start difference. First operand 2340 states and 3003 transitions. Second operand 16 states. [2020-12-23 09:40:05,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:05,767 INFO L93 Difference]: Finished difference Result 6446 states and 8306 transitions. [2020-12-23 09:40:05,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-23 09:40:05,768 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 142 [2020-12-23 09:40:05,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:05,774 INFO L225 Difference]: With dead ends: 6446 [2020-12-23 09:40:05,774 INFO L226 Difference]: Without dead ends: 4321 [2020-12-23 09:40:05,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 135 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=267, Invalid=1065, Unknown=0, NotChecked=0, Total=1332 [2020-12-23 09:40:05,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4321 states. [2020-12-23 09:40:06,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4321 to 2597. [2020-12-23 09:40:06,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2597 states. [2020-12-23 09:40:06,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2597 states to 2597 states and 3326 transitions. [2020-12-23 09:40:06,191 INFO L78 Accepts]: Start accepts. Automaton has 2597 states and 3326 transitions. Word has length 142 [2020-12-23 09:40:06,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:06,191 INFO L481 AbstractCegarLoop]: Abstraction has 2597 states and 3326 transitions. [2020-12-23 09:40:06,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-23 09:40:06,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2597 states and 3326 transitions. [2020-12-23 09:40:06,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-12-23 09:40:06,197 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:06,198 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:06,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-12-23 09:40:06,412 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:06,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:06,413 INFO L82 PathProgramCache]: Analyzing trace with hash 50969983, now seen corresponding path program 1 times [2020-12-23 09:40:06,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:06,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910479282] [2020-12-23 09:40:06,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:06,520 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-23 09:40:06,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910479282] [2020-12-23 09:40:06,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:06,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:40:06,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168435013] [2020-12-23 09:40:06,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:40:06,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:06,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:40:06,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:40:06,522 INFO L87 Difference]: Start difference. First operand 2597 states and 3326 transitions. Second operand 5 states. [2020-12-23 09:40:06,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:06,993 INFO L93 Difference]: Finished difference Result 4900 states and 6323 transitions. [2020-12-23 09:40:06,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:40:06,994 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-12-23 09:40:06,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:06,998 INFO L225 Difference]: With dead ends: 4900 [2020-12-23 09:40:06,998 INFO L226 Difference]: Without dead ends: 2457 [2020-12-23 09:40:07,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:40:07,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2457 states. [2020-12-23 09:40:07,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2457 to 2457. [2020-12-23 09:40:07,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2457 states. [2020-12-23 09:40:07,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2457 states to 2457 states and 3149 transitions. [2020-12-23 09:40:07,463 INFO L78 Accepts]: Start accepts. Automaton has 2457 states and 3149 transitions. Word has length 142 [2020-12-23 09:40:07,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:07,463 INFO L481 AbstractCegarLoop]: Abstraction has 2457 states and 3149 transitions. [2020-12-23 09:40:07,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:40:07,463 INFO L276 IsEmpty]: Start isEmpty. Operand 2457 states and 3149 transitions. [2020-12-23 09:40:07,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-23 09:40:07,467 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:07,467 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:07,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-12-23 09:40:07,468 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:07,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:07,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1524126663, now seen corresponding path program 1 times [2020-12-23 09:40:07,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:07,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3355709] [2020-12-23 09:40:07,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:07,708 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:07,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3355709] [2020-12-23 09:40:07,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883214936] [2020-12-23 09:40:07,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:40:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:07,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-23 09:40:07,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:40:08,014 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 09:40:08,029 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 09:40:08,395 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:08,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:40:08,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 17 [2020-12-23 09:40:08,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577257109] [2020-12-23 09:40:08,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-23 09:40:08,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:08,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-23 09:40:08,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2020-12-23 09:40:08,397 INFO L87 Difference]: Start difference. First operand 2457 states and 3149 transitions. Second operand 18 states. [2020-12-23 09:40:11,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:11,467 INFO L93 Difference]: Finished difference Result 6708 states and 8616 transitions. [2020-12-23 09:40:11,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-23 09:40:11,467 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 143 [2020-12-23 09:40:11,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:11,471 INFO L225 Difference]: With dead ends: 6708 [2020-12-23 09:40:11,471 INFO L226 Difference]: Without dead ends: 4466 [2020-12-23 09:40:11,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=401, Invalid=1579, Unknown=0, NotChecked=0, Total=1980 [2020-12-23 09:40:11,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4466 states. [2020-12-23 09:40:12,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4466 to 2735. [2020-12-23 09:40:12,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2735 states. [2020-12-23 09:40:12,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2735 states to 2735 states and 3496 transitions. [2020-12-23 09:40:12,014 INFO L78 Accepts]: Start accepts. Automaton has 2735 states and 3496 transitions. Word has length 143 [2020-12-23 09:40:12,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:12,014 INFO L481 AbstractCegarLoop]: Abstraction has 2735 states and 3496 transitions. [2020-12-23 09:40:12,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-23 09:40:12,014 INFO L276 IsEmpty]: Start isEmpty. Operand 2735 states and 3496 transitions. [2020-12-23 09:40:12,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-23 09:40:12,018 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:12,019 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:12,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:40:12,234 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:12,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:12,235 INFO L82 PathProgramCache]: Analyzing trace with hash -449038715, now seen corresponding path program 1 times [2020-12-23 09:40:12,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:12,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509811609] [2020-12-23 09:40:12,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:12,293 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-23 09:40:12,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509811609] [2020-12-23 09:40:12,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:12,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:40:12,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754165891] [2020-12-23 09:40:12,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:40:12,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:12,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:40:12,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:40:12,295 INFO L87 Difference]: Start difference. First operand 2735 states and 3496 transitions. Second operand 4 states. [2020-12-23 09:40:12,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:12,842 INFO L93 Difference]: Finished difference Result 5102 states and 6564 transitions. [2020-12-23 09:40:12,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:40:12,842 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-12-23 09:40:12,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:12,845 INFO L225 Difference]: With dead ends: 5102 [2020-12-23 09:40:12,845 INFO L226 Difference]: Without dead ends: 2523 [2020-12-23 09:40:12,848 INFO L677 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 [2020-12-23 09:40:12,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2523 states. [2020-12-23 09:40:13,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2523 to 2511. [2020-12-23 09:40:13,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2511 states. [2020-12-23 09:40:13,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 3197 transitions. [2020-12-23 09:40:13,194 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 3197 transitions. Word has length 143 [2020-12-23 09:40:13,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:13,194 INFO L481 AbstractCegarLoop]: Abstraction has 2511 states and 3197 transitions. [2020-12-23 09:40:13,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:40:13,194 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 3197 transitions. [2020-12-23 09:40:13,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-23 09:40:13,197 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:13,197 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:13,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-12-23 09:40:13,198 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:13,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:13,198 INFO L82 PathProgramCache]: Analyzing trace with hash -964854072, now seen corresponding path program 1 times [2020-12-23 09:40:13,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:13,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665562401] [2020-12-23 09:40:13,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:13,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:13,477 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:13,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665562401] [2020-12-23 09:40:13,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:13,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-23 09:40:13,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951750390] [2020-12-23 09:40:13,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 09:40:13,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:13,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 09:40:13,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-23 09:40:13,480 INFO L87 Difference]: Start difference. First operand 2511 states and 3197 transitions. Second operand 10 states. [2020-12-23 09:40:15,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:15,135 INFO L93 Difference]: Finished difference Result 6616 states and 8498 transitions. [2020-12-23 09:40:15,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-23 09:40:15,136 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 143 [2020-12-23 09:40:15,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:15,141 INFO L225 Difference]: With dead ends: 6616 [2020-12-23 09:40:15,141 INFO L226 Difference]: Without dead ends: 4320 [2020-12-23 09:40:15,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2020-12-23 09:40:15,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4320 states. [2020-12-23 09:40:15,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4320 to 2845. [2020-12-23 09:40:15,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2845 states. [2020-12-23 09:40:15,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2845 states to 2845 states and 3619 transitions. [2020-12-23 09:40:15,599 INFO L78 Accepts]: Start accepts. Automaton has 2845 states and 3619 transitions. Word has length 143 [2020-12-23 09:40:15,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:15,599 INFO L481 AbstractCegarLoop]: Abstraction has 2845 states and 3619 transitions. [2020-12-23 09:40:15,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 09:40:15,599 INFO L276 IsEmpty]: Start isEmpty. Operand 2845 states and 3619 transitions. [2020-12-23 09:40:15,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-23 09:40:15,603 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:15,603 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:15,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-12-23 09:40:15,604 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:15,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:15,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1487637510, now seen corresponding path program 1 times [2020-12-23 09:40:15,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:15,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836191326] [2020-12-23 09:40:15,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:15,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:15,718 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-23 09:40:15,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836191326] [2020-12-23 09:40:15,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:15,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:40:15,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369509122] [2020-12-23 09:40:15,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:40:15,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:15,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:40:15,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:40:15,720 INFO L87 Difference]: Start difference. First operand 2845 states and 3619 transitions. Second operand 5 states. [2020-12-23 09:40:16,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:16,389 INFO L93 Difference]: Finished difference Result 5316 states and 6801 transitions. [2020-12-23 09:40:16,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:40:16,390 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-12-23 09:40:16,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:16,392 INFO L225 Difference]: With dead ends: 5316 [2020-12-23 09:40:16,392 INFO L226 Difference]: Without dead ends: 2628 [2020-12-23 09:40:16,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:40:16,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2628 states. [2020-12-23 09:40:16,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2628 to 2628. [2020-12-23 09:40:16,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2628 states. [2020-12-23 09:40:16,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2628 states to 2628 states and 3346 transitions. [2020-12-23 09:40:16,838 INFO L78 Accepts]: Start accepts. Automaton has 2628 states and 3346 transitions. Word has length 143 [2020-12-23 09:40:16,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:16,839 INFO L481 AbstractCegarLoop]: Abstraction has 2628 states and 3346 transitions. [2020-12-23 09:40:16,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:40:16,839 INFO L276 IsEmpty]: Start isEmpty. Operand 2628 states and 3346 transitions. [2020-12-23 09:40:16,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-12-23 09:40:16,843 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:16,843 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:16,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-12-23 09:40:16,843 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:16,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:16,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1114736962, now seen corresponding path program 1 times [2020-12-23 09:40:16,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:16,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949223290] [2020-12-23 09:40:16,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:16,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:17,239 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:17,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949223290] [2020-12-23 09:40:17,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232283767] [2020-12-23 09:40:17,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:40:17,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:17,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-23 09:40:17,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:40:17,609 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 09:40:17,891 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:17,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:40:17,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2020-12-23 09:40:17,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421706996] [2020-12-23 09:40:17,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 09:40:17,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:17,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 09:40:17,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-12-23 09:40:17,893 INFO L87 Difference]: Start difference. First operand 2628 states and 3346 transitions. Second operand 11 states. [2020-12-23 09:40:19,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:19,360 INFO L93 Difference]: Finished difference Result 7254 states and 9244 transitions. [2020-12-23 09:40:19,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 09:40:19,361 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 144 [2020-12-23 09:40:19,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:19,365 INFO L225 Difference]: With dead ends: 7254 [2020-12-23 09:40:19,365 INFO L226 Difference]: Without dead ends: 4841 [2020-12-23 09:40:19,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 138 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2020-12-23 09:40:19,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4841 states. [2020-12-23 09:40:19,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4841 to 2639. [2020-12-23 09:40:19,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2639 states. [2020-12-23 09:40:19,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2639 states to 2639 states and 3357 transitions. [2020-12-23 09:40:19,796 INFO L78 Accepts]: Start accepts. Automaton has 2639 states and 3357 transitions. Word has length 144 [2020-12-23 09:40:19,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:19,796 INFO L481 AbstractCegarLoop]: Abstraction has 2639 states and 3357 transitions. [2020-12-23 09:40:19,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 09:40:19,796 INFO L276 IsEmpty]: Start isEmpty. Operand 2639 states and 3357 transitions. [2020-12-23 09:40:19,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-12-23 09:40:19,800 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:19,800 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:20,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:40:20,001 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:20,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:20,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1956879758, now seen corresponding path program 1 times [2020-12-23 09:40:20,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:20,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200566882] [2020-12-23 09:40:20,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:20,249 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:20,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200566882] [2020-12-23 09:40:20,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346876536] [2020-12-23 09:40:20,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:40:20,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:20,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-23 09:40:20,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:40:20,711 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:40:20,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 09:40:20,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2020-12-23 09:40:20,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938479765] [2020-12-23 09:40:20,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:40:20,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:20,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:40:20,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-12-23 09:40:20,712 INFO L87 Difference]: Start difference. First operand 2639 states and 3357 transitions. Second operand 6 states. [2020-12-23 09:40:22,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:22,036 INFO L93 Difference]: Finished difference Result 8605 states and 11222 transitions. [2020-12-23 09:40:22,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 09:40:22,037 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2020-12-23 09:40:22,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:22,043 INFO L225 Difference]: With dead ends: 8605 [2020-12-23 09:40:22,043 INFO L226 Difference]: Without dead ends: 6141 [2020-12-23 09:40:22,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-12-23 09:40:22,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6141 states. [2020-12-23 09:40:22,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6141 to 2639. [2020-12-23 09:40:22,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2639 states. [2020-12-23 09:40:22,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2639 states to 2639 states and 3355 transitions. [2020-12-23 09:40:22,508 INFO L78 Accepts]: Start accepts. Automaton has 2639 states and 3355 transitions. Word has length 144 [2020-12-23 09:40:22,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:22,509 INFO L481 AbstractCegarLoop]: Abstraction has 2639 states and 3355 transitions. [2020-12-23 09:40:22,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:40:22,509 INFO L276 IsEmpty]: Start isEmpty. Operand 2639 states and 3355 transitions. [2020-12-23 09:40:22,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-12-23 09:40:22,512 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:22,512 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:22,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-12-23 09:40:22,713 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:22,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:22,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1885958889, now seen corresponding path program 1 times [2020-12-23 09:40:22,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:22,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097232842] [2020-12-23 09:40:22,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:22,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:22,854 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:22,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097232842] [2020-12-23 09:40:22,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374518746] [2020-12-23 09:40:22,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:40:23,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:23,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 09:40:23,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:40:23,315 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:23,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:40:23,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 8 [2020-12-23 09:40:23,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865385348] [2020-12-23 09:40:23,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 09:40:23,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:23,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 09:40:23,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-23 09:40:23,316 INFO L87 Difference]: Start difference. First operand 2639 states and 3355 transitions. Second operand 8 states. [2020-12-23 09:40:25,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:25,283 INFO L93 Difference]: Finished difference Result 10037 states and 12802 transitions. [2020-12-23 09:40:25,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-23 09:40:25,284 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 145 [2020-12-23 09:40:25,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:25,293 INFO L225 Difference]: With dead ends: 10037 [2020-12-23 09:40:25,294 INFO L226 Difference]: Without dead ends: 7613 [2020-12-23 09:40:25,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552 [2020-12-23 09:40:25,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7613 states. [2020-12-23 09:40:25,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7613 to 3995. [2020-12-23 09:40:25,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3995 states. [2020-12-23 09:40:25,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3995 states to 3995 states and 5089 transitions. [2020-12-23 09:40:25,986 INFO L78 Accepts]: Start accepts. Automaton has 3995 states and 5089 transitions. Word has length 145 [2020-12-23 09:40:25,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:25,987 INFO L481 AbstractCegarLoop]: Abstraction has 3995 states and 5089 transitions. [2020-12-23 09:40:25,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 09:40:25,987 INFO L276 IsEmpty]: Start isEmpty. Operand 3995 states and 5089 transitions. [2020-12-23 09:40:25,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-12-23 09:40:25,992 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:25,992 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:26,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:40:26,200 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:26,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:26,201 INFO L82 PathProgramCache]: Analyzing trace with hash 435843029, now seen corresponding path program 1 times [2020-12-23 09:40:26,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:26,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081500480] [2020-12-23 09:40:26,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:26,276 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-23 09:40:26,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081500480] [2020-12-23 09:40:26,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:26,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:40:26,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398330237] [2020-12-23 09:40:26,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:40:26,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:26,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:40:26,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:40:26,279 INFO L87 Difference]: Start difference. First operand 3995 states and 5089 transitions. Second operand 4 states. [2020-12-23 09:40:26,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:26,978 INFO L93 Difference]: Finished difference Result 6973 states and 8962 transitions. [2020-12-23 09:40:26,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:40:26,978 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2020-12-23 09:40:26,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:26,981 INFO L225 Difference]: With dead ends: 6973 [2020-12-23 09:40:26,981 INFO L226 Difference]: Without dead ends: 3193 [2020-12-23 09:40:26,985 INFO L677 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 [2020-12-23 09:40:26,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3193 states. [2020-12-23 09:40:27,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3193 to 3174. [2020-12-23 09:40:27,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3174 states. [2020-12-23 09:40:27,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3174 states to 3174 states and 4041 transitions. [2020-12-23 09:40:27,493 INFO L78 Accepts]: Start accepts. Automaton has 3174 states and 4041 transitions. Word has length 145 [2020-12-23 09:40:27,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:27,493 INFO L481 AbstractCegarLoop]: Abstraction has 3174 states and 4041 transitions. [2020-12-23 09:40:27,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:40:27,493 INFO L276 IsEmpty]: Start isEmpty. Operand 3174 states and 4041 transitions. [2020-12-23 09:40:27,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-12-23 09:40:27,496 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:27,497 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:27,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-12-23 09:40:27,497 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:27,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:27,497 INFO L82 PathProgramCache]: Analyzing trace with hash -730739689, now seen corresponding path program 1 times [2020-12-23 09:40:27,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:27,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540415803] [2020-12-23 09:40:27,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:27,744 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:27,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540415803] [2020-12-23 09:40:27,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912023079] [2020-12-23 09:40:27,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:40:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:27,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-23 09:40:28,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:40:28,261 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:28,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:40:28,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2020-12-23 09:40:28,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690348828] [2020-12-23 09:40:28,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 09:40:28,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:28,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 09:40:28,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-12-23 09:40:28,263 INFO L87 Difference]: Start difference. First operand 3174 states and 4041 transitions. Second operand 15 states. [2020-12-23 09:40:41,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:41,507 INFO L93 Difference]: Finished difference Result 18767 states and 24265 transitions. [2020-12-23 09:40:41,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2020-12-23 09:40:41,508 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 147 [2020-12-23 09:40:41,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:41,526 INFO L225 Difference]: With dead ends: 18767 [2020-12-23 09:40:41,526 INFO L226 Difference]: Without dead ends: 15808 [2020-12-23 09:40:41,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12819 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=4607, Invalid=26899, Unknown=0, NotChecked=0, Total=31506 [2020-12-23 09:40:41,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15808 states. [2020-12-23 09:40:42,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15808 to 3053. [2020-12-23 09:40:42,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3053 states. [2020-12-23 09:40:42,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3053 states to 3053 states and 3832 transitions. [2020-12-23 09:40:42,236 INFO L78 Accepts]: Start accepts. Automaton has 3053 states and 3832 transitions. Word has length 147 [2020-12-23 09:40:42,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:42,236 INFO L481 AbstractCegarLoop]: Abstraction has 3053 states and 3832 transitions. [2020-12-23 09:40:42,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 09:40:42,237 INFO L276 IsEmpty]: Start isEmpty. Operand 3053 states and 3832 transitions. [2020-12-23 09:40:42,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-12-23 09:40:42,239 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:42,239 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:42,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:40:42,441 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:42,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:42,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1633294652, now seen corresponding path program 1 times [2020-12-23 09:40:42,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:42,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052846980] [2020-12-23 09:40:42,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:42,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:42,603 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-23 09:40:42,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052846980] [2020-12-23 09:40:42,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:42,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 09:40:42,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496970868] [2020-12-23 09:40:42,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:40:42,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:42,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:40:42,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:40:42,606 INFO L87 Difference]: Start difference. First operand 3053 states and 3832 transitions. Second operand 6 states. [2020-12-23 09:40:44,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:44,635 INFO L93 Difference]: Finished difference Result 10301 states and 13253 transitions. [2020-12-23 09:40:44,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 09:40:44,636 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2020-12-23 09:40:44,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:44,645 INFO L225 Difference]: With dead ends: 10301 [2020-12-23 09:40:44,645 INFO L226 Difference]: Without dead ends: 7531 [2020-12-23 09:40:44,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-23 09:40:44,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7531 states. [2020-12-23 09:40:45,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7531 to 3134. [2020-12-23 09:40:45,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3134 states. [2020-12-23 09:40:45,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3134 states to 3134 states and 3928 transitions. [2020-12-23 09:40:45,305 INFO L78 Accepts]: Start accepts. Automaton has 3134 states and 3928 transitions. Word has length 149 [2020-12-23 09:40:45,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:45,305 INFO L481 AbstractCegarLoop]: Abstraction has 3134 states and 3928 transitions. [2020-12-23 09:40:45,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:40:45,305 INFO L276 IsEmpty]: Start isEmpty. Operand 3134 states and 3928 transitions. [2020-12-23 09:40:45,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-12-23 09:40:45,308 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:45,308 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:45,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-12-23 09:40:45,308 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:45,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:45,308 INFO L82 PathProgramCache]: Analyzing trace with hash 2067087821, now seen corresponding path program 1 times [2020-12-23 09:40:45,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:45,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710996630] [2020-12-23 09:40:45,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:45,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:45,559 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:45,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710996630] [2020-12-23 09:40:45,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620376218] [2020-12-23 09:40:45,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:40:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:45,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-23 09:40:45,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:40:46,023 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:46,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:40:46,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 8 [2020-12-23 09:40:46,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321629621] [2020-12-23 09:40:46,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 09:40:46,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:46,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 09:40:46,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-23 09:40:46,025 INFO L87 Difference]: Start difference. First operand 3134 states and 3928 transitions. Second operand 8 states. [2020-12-23 09:40:48,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:48,059 INFO L93 Difference]: Finished difference Result 9191 states and 11786 transitions. [2020-12-23 09:40:48,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-23 09:40:48,060 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 150 [2020-12-23 09:40:48,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:48,067 INFO L225 Difference]: With dead ends: 9191 [2020-12-23 09:40:48,067 INFO L226 Difference]: Without dead ends: 6340 [2020-12-23 09:40:48,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 154 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-12-23 09:40:48,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6340 states. [2020-12-23 09:40:48,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6340 to 3134. [2020-12-23 09:40:48,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3134 states. [2020-12-23 09:40:48,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3134 states to 3134 states and 3900 transitions. [2020-12-23 09:40:48,705 INFO L78 Accepts]: Start accepts. Automaton has 3134 states and 3900 transitions. Word has length 150 [2020-12-23 09:40:48,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:48,705 INFO L481 AbstractCegarLoop]: Abstraction has 3134 states and 3900 transitions. [2020-12-23 09:40:48,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 09:40:48,705 INFO L276 IsEmpty]: Start isEmpty. Operand 3134 states and 3900 transitions. [2020-12-23 09:40:48,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-12-23 09:40:48,708 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:48,708 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:48,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-12-23 09:40:48,912 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:48,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:48,912 INFO L82 PathProgramCache]: Analyzing trace with hash -601243994, now seen corresponding path program 1 times [2020-12-23 09:40:48,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:48,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691130634] [2020-12-23 09:40:48,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:49,010 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-12-23 09:40:49,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691130634] [2020-12-23 09:40:49,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:49,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 09:40:49,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52772702] [2020-12-23 09:40:49,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:40:49,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:49,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:40:49,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:40:49,013 INFO L87 Difference]: Start difference. First operand 3134 states and 3900 transitions. Second operand 6 states. [2020-12-23 09:40:51,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:51,773 INFO L93 Difference]: Finished difference Result 14441 states and 18476 transitions. [2020-12-23 09:40:51,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 09:40:51,774 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2020-12-23 09:40:51,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:51,784 INFO L225 Difference]: With dead ends: 14441 [2020-12-23 09:40:51,784 INFO L226 Difference]: Without dead ends: 11590 [2020-12-23 09:40:51,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-12-23 09:40:51,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11590 states. [2020-12-23 09:40:52,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11590 to 3603. [2020-12-23 09:40:52,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3603 states. [2020-12-23 09:40:52,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3603 states to 3603 states and 4435 transitions. [2020-12-23 09:40:52,511 INFO L78 Accepts]: Start accepts. Automaton has 3603 states and 4435 transitions. Word has length 150 [2020-12-23 09:40:52,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:52,512 INFO L481 AbstractCegarLoop]: Abstraction has 3603 states and 4435 transitions. [2020-12-23 09:40:52,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:40:52,512 INFO L276 IsEmpty]: Start isEmpty. Operand 3603 states and 4435 transitions. [2020-12-23 09:40:52,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-23 09:40:52,515 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:52,515 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:52,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-12-23 09:40:52,516 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:52,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:52,516 INFO L82 PathProgramCache]: Analyzing trace with hash 998203005, now seen corresponding path program 1 times [2020-12-23 09:40:52,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:52,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10077482] [2020-12-23 09:40:52,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:52,607 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-23 09:40:52,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10077482] [2020-12-23 09:40:52,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:52,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:40:52,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122797174] [2020-12-23 09:40:52,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:40:52,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:52,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:40:52,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:40:52,609 INFO L87 Difference]: Start difference. First operand 3603 states and 4435 transitions. Second operand 4 states. [2020-12-23 09:40:53,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:53,827 INFO L93 Difference]: Finished difference Result 8723 states and 10877 transitions. [2020-12-23 09:40:53,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:40:53,827 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-12-23 09:40:53,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:53,832 INFO L225 Difference]: With dead ends: 8723 [2020-12-23 09:40:53,832 INFO L226 Difference]: Without dead ends: 5403 [2020-12-23 09:40:53,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:40:53,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5403 states. [2020-12-23 09:40:54,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5403 to 4307. [2020-12-23 09:40:54,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4307 states. [2020-12-23 09:40:54,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4307 states to 4307 states and 5292 transitions. [2020-12-23 09:40:54,696 INFO L78 Accepts]: Start accepts. Automaton has 4307 states and 5292 transitions. Word has length 151 [2020-12-23 09:40:54,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:54,697 INFO L481 AbstractCegarLoop]: Abstraction has 4307 states and 5292 transitions. [2020-12-23 09:40:54,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:40:54,697 INFO L276 IsEmpty]: Start isEmpty. Operand 4307 states and 5292 transitions. [2020-12-23 09:40:54,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-23 09:40:54,700 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:54,701 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:54,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-12-23 09:40:54,701 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:54,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:54,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1922291218, now seen corresponding path program 1 times [2020-12-23 09:40:54,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:54,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750507426] [2020-12-23 09:40:54,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:54,845 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:54,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750507426] [2020-12-23 09:40:54,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444444739] [2020-12-23 09:40:54,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:40:55,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:55,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 831 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 09:40:55,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:40:55,311 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:55,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:40:55,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-12-23 09:40:55,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216199729] [2020-12-23 09:40:55,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:40:55,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:55,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:40:55,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:40:55,313 INFO L87 Difference]: Start difference. First operand 4307 states and 5292 transitions. Second operand 7 states. [2020-12-23 09:40:57,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:57,773 INFO L93 Difference]: Finished difference Result 15007 states and 18966 transitions. [2020-12-23 09:40:57,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-23 09:40:57,774 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2020-12-23 09:40:57,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:57,784 INFO L225 Difference]: With dead ends: 15007 [2020-12-23 09:40:57,784 INFO L226 Difference]: Without dead ends: 10983 [2020-12-23 09:40:57,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-12-23 09:40:57,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10983 states. [2020-12-23 09:40:59,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10983 to 6767. [2020-12-23 09:40:59,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6767 states. [2020-12-23 09:40:59,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6767 states to 6767 states and 8341 transitions. [2020-12-23 09:40:59,333 INFO L78 Accepts]: Start accepts. Automaton has 6767 states and 8341 transitions. Word has length 151 [2020-12-23 09:40:59,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:59,333 INFO L481 AbstractCegarLoop]: Abstraction has 6767 states and 8341 transitions. [2020-12-23 09:40:59,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:40:59,334 INFO L276 IsEmpty]: Start isEmpty. Operand 6767 states and 8341 transitions. [2020-12-23 09:40:59,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-23 09:40:59,337 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:59,338 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:59,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-12-23 09:40:59,544 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:59,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:59,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1412904435, now seen corresponding path program 1 times [2020-12-23 09:40:59,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:59,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551119179] [2020-12-23 09:40:59,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:59,791 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 45 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:59,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551119179] [2020-12-23 09:40:59,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340813928] [2020-12-23 09:40:59,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:41:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:00,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-23 09:41:00,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:41:00,328 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 35 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:41:00,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:41:00,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 17 [2020-12-23 09:41:00,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635977629] [2020-12-23 09:41:00,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-23 09:41:00,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:41:00,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-23 09:41:00,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-12-23 09:41:00,330 INFO L87 Difference]: Start difference. First operand 6767 states and 8341 transitions. Second operand 17 states. [2020-12-23 09:41:16,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:41:16,112 INFO L93 Difference]: Finished difference Result 26870 states and 33532 transitions. [2020-12-23 09:41:16,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2020-12-23 09:41:16,113 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 151 [2020-12-23 09:41:16,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:41:16,133 INFO L225 Difference]: With dead ends: 26870 [2020-12-23 09:41:16,133 INFO L226 Difference]: Without dead ends: 21444 [2020-12-23 09:41:16,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11740 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=4205, Invalid=25207, Unknown=0, NotChecked=0, Total=29412 [2020-12-23 09:41:16,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21444 states. [2020-12-23 09:41:18,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21444 to 9781. [2020-12-23 09:41:18,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9781 states. [2020-12-23 09:41:18,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9781 states to 9781 states and 12073 transitions. [2020-12-23 09:41:18,319 INFO L78 Accepts]: Start accepts. Automaton has 9781 states and 12073 transitions. Word has length 151 [2020-12-23 09:41:18,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:41:18,319 INFO L481 AbstractCegarLoop]: Abstraction has 9781 states and 12073 transitions. [2020-12-23 09:41:18,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-23 09:41:18,320 INFO L276 IsEmpty]: Start isEmpty. Operand 9781 states and 12073 transitions. [2020-12-23 09:41:18,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-12-23 09:41:18,325 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:41:18,326 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:41:18,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2020-12-23 09:41:18,527 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:41:18,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:41:18,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1495826135, now seen corresponding path program 1 times [2020-12-23 09:41:18,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:41:18,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974200650] [2020-12-23 09:41:18,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:41:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:18,793 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 21 [2020-12-23 09:41:18,856 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:41:18,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974200650] [2020-12-23 09:41:18,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081761947] [2020-12-23 09:41:18,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:41:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:19,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-23 09:41:19,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:41:19,264 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 09:41:19,563 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:41:19,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:41:19,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2020-12-23 09:41:19,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880907607] [2020-12-23 09:41:19,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 09:41:19,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:41:19,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 09:41:19,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-12-23 09:41:19,565 INFO L87 Difference]: Start difference. First operand 9781 states and 12073 transitions. Second operand 11 states. [2020-12-23 09:41:22,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:41:22,942 INFO L93 Difference]: Finished difference Result 18894 states and 23580 transitions. [2020-12-23 09:41:22,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 09:41:22,943 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 152 [2020-12-23 09:41:22,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:41:22,953 INFO L225 Difference]: With dead ends: 18894 [2020-12-23 09:41:22,953 INFO L226 Difference]: Without dead ends: 12089 [2020-12-23 09:41:22,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 146 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2020-12-23 09:41:22,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12089 states. [2020-12-23 09:41:25,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12089 to 9537. [2020-12-23 09:41:25,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9537 states. [2020-12-23 09:41:25,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9537 states to 9537 states and 11754 transitions. [2020-12-23 09:41:25,102 INFO L78 Accepts]: Start accepts. Automaton has 9537 states and 11754 transitions. Word has length 152 [2020-12-23 09:41:25,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:41:25,102 INFO L481 AbstractCegarLoop]: Abstraction has 9537 states and 11754 transitions. [2020-12-23 09:41:25,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 09:41:25,102 INFO L276 IsEmpty]: Start isEmpty. Operand 9537 states and 11754 transitions. [2020-12-23 09:41:25,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-12-23 09:41:25,108 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:41:25,108 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:41:25,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:41:25,322 INFO L429 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:41:25,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:41:25,323 INFO L82 PathProgramCache]: Analyzing trace with hash -340924675, now seen corresponding path program 1 times [2020-12-23 09:41:25,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:41:25,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8804975] [2020-12-23 09:41:25,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:41:25,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:25,383 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-12-23 09:41:25,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8804975] [2020-12-23 09:41:25,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:41:25,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:41:25,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091670364] [2020-12-23 09:41:25,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:41:25,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:41:25,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:41:25,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:41:25,386 INFO L87 Difference]: Start difference. First operand 9537 states and 11754 transitions. Second operand 4 states. [2020-12-23 09:41:26,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:41:26,938 INFO L93 Difference]: Finished difference Result 15056 states and 18532 transitions. [2020-12-23 09:41:26,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:41:26,939 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-12-23 09:41:26,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:41:26,944 INFO L225 Difference]: With dead ends: 15056 [2020-12-23 09:41:26,944 INFO L226 Difference]: Without dead ends: 6075 [2020-12-23 09:41:26,948 INFO L677 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 [2020-12-23 09:41:26,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6075 states. [2020-12-23 09:41:28,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6075 to 6057. [2020-12-23 09:41:28,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6057 states. [2020-12-23 09:41:28,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6057 states to 6057 states and 7371 transitions. [2020-12-23 09:41:28,315 INFO L78 Accepts]: Start accepts. Automaton has 6057 states and 7371 transitions. Word has length 152 [2020-12-23 09:41:28,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:41:28,315 INFO L481 AbstractCegarLoop]: Abstraction has 6057 states and 7371 transitions. [2020-12-23 09:41:28,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:41:28,316 INFO L276 IsEmpty]: Start isEmpty. Operand 6057 states and 7371 transitions. [2020-12-23 09:41:28,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-23 09:41:28,319 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:41:28,319 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:41:28,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-12-23 09:41:28,319 INFO L429 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:41:28,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:41:28,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1605278386, now seen corresponding path program 1 times [2020-12-23 09:41:28,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:41:28,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373365885] [2020-12-23 09:41:28,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:41:28,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:28,391 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-23 09:41:28,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373365885] [2020-12-23 09:41:28,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:41:28,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:41:28,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922505379] [2020-12-23 09:41:28,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:41:28,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:41:28,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:41:28,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:41:28,393 INFO L87 Difference]: Start difference. First operand 6057 states and 7371 transitions. Second operand 4 states. [2020-12-23 09:41:30,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:41:30,157 INFO L93 Difference]: Finished difference Result 12493 states and 15291 transitions. [2020-12-23 09:41:30,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:41:30,159 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2020-12-23 09:41:30,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:41:30,166 INFO L225 Difference]: With dead ends: 12493 [2020-12-23 09:41:30,167 INFO L226 Difference]: Without dead ends: 7449 [2020-12-23 09:41:30,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:41:30,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7449 states. [2020-12-23 09:41:31,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7449 to 6050. [2020-12-23 09:41:31,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6050 states. [2020-12-23 09:41:31,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6050 states to 6050 states and 7350 transitions. [2020-12-23 09:41:31,534 INFO L78 Accepts]: Start accepts. Automaton has 6050 states and 7350 transitions. Word has length 153 [2020-12-23 09:41:31,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:41:31,534 INFO L481 AbstractCegarLoop]: Abstraction has 6050 states and 7350 transitions. [2020-12-23 09:41:31,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:41:31,534 INFO L276 IsEmpty]: Start isEmpty. Operand 6050 states and 7350 transitions. [2020-12-23 09:41:31,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-23 09:41:31,536 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:41:31,536 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:41:31,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-12-23 09:41:31,537 INFO L429 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:41:31,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:41:31,537 INFO L82 PathProgramCache]: Analyzing trace with hash 420365712, now seen corresponding path program 1 times [2020-12-23 09:41:31,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:41:31,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900303570] [2020-12-23 09:41:31,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:41:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:31,808 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:41:31,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900303570] [2020-12-23 09:41:31,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353698772] [2020-12-23 09:41:31,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:41:32,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:32,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-23 09:41:32,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:41:32,347 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 20 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:41:32,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:41:32,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 16 [2020-12-23 09:41:32,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843686415] [2020-12-23 09:41:32,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-23 09:41:32,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:41:32,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-23 09:41:32,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-12-23 09:41:32,349 INFO L87 Difference]: Start difference. First operand 6050 states and 7350 transitions. Second operand 16 states. [2020-12-23 09:41:48,746 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-12-23 09:41:51,002 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-12-23 09:41:54,172 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2020-12-23 09:41:54,883 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-12-23 09:42:00,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:42:00,589 INFO L93 Difference]: Finished difference Result 35022 states and 43413 transitions. [2020-12-23 09:42:00,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2020-12-23 09:42:00,590 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 153 [2020-12-23 09:42:00,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:42:00,617 INFO L225 Difference]: With dead ends: 35022 [2020-12-23 09:42:00,618 INFO L226 Difference]: Without dead ends: 30145 [2020-12-23 09:42:00,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21921 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=6991, Invalid=47065, Unknown=0, NotChecked=0, Total=54056 [2020-12-23 09:42:00,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30145 states. [2020-12-23 09:42:02,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30145 to 8238. [2020-12-23 09:42:02,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8238 states. [2020-12-23 09:42:02,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8238 states to 8238 states and 10000 transitions. [2020-12-23 09:42:02,688 INFO L78 Accepts]: Start accepts. Automaton has 8238 states and 10000 transitions. Word has length 153 [2020-12-23 09:42:02,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:42:02,688 INFO L481 AbstractCegarLoop]: Abstraction has 8238 states and 10000 transitions. [2020-12-23 09:42:02,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-23 09:42:02,688 INFO L276 IsEmpty]: Start isEmpty. Operand 8238 states and 10000 transitions. [2020-12-23 09:42:02,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-23 09:42:02,691 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:42:02,691 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:42:02,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2020-12-23 09:42:02,892 INFO L429 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:42:02,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:42:02,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1864563000, now seen corresponding path program 1 times [2020-12-23 09:42:02,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:42:02,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261267270] [2020-12-23 09:42:02,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:42:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:03,105 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:42:03,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261267270] [2020-12-23 09:42:03,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659645554] [2020-12-23 09:42:03,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:42:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:03,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-23 09:42:03,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:42:03,658 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:42:03,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:42:03,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2020-12-23 09:42:03,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689001210] [2020-12-23 09:42:03,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 09:42:03,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:42:03,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 09:42:03,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-12-23 09:42:03,661 INFO L87 Difference]: Start difference. First operand 8238 states and 10000 transitions. Second operand 13 states. [2020-12-23 09:42:20,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:42:20,262 INFO L93 Difference]: Finished difference Result 40257 states and 50640 transitions. [2020-12-23 09:42:20,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2020-12-23 09:42:20,263 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 154 [2020-12-23 09:42:20,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:42:20,295 INFO L225 Difference]: With dead ends: 40257 [2020-12-23 09:42:20,296 INFO L226 Difference]: Without dead ends: 34196 [2020-12-23 09:42:20,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7831 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2820, Invalid=16640, Unknown=0, NotChecked=0, Total=19460 [2020-12-23 09:42:20,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34196 states. [2020-12-23 09:42:22,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34196 to 7886. [2020-12-23 09:42:22,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7886 states. [2020-12-23 09:42:22,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7886 states to 7886 states and 9575 transitions. [2020-12-23 09:42:22,698 INFO L78 Accepts]: Start accepts. Automaton has 7886 states and 9575 transitions. Word has length 154 [2020-12-23 09:42:22,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:42:22,698 INFO L481 AbstractCegarLoop]: Abstraction has 7886 states and 9575 transitions. [2020-12-23 09:42:22,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 09:42:22,699 INFO L276 IsEmpty]: Start isEmpty. Operand 7886 states and 9575 transitions. [2020-12-23 09:42:22,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-23 09:42:22,701 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:42:22,701 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:42:22,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:42:22,904 INFO L429 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:42:22,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:42:22,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1864605078, now seen corresponding path program 1 times [2020-12-23 09:42:22,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:42:22,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736317628] [2020-12-23 09:42:22,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:42:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:23,127 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:42:23,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736317628] [2020-12-23 09:42:23,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822225262] [2020-12-23 09:42:23,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:42:23,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:23,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-23 09:42:23,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:42:23,643 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:42:23,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:42:23,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 8 [2020-12-23 09:42:23,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387807757] [2020-12-23 09:42:23,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 09:42:23,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:42:23,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 09:42:23,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-23 09:42:23,645 INFO L87 Difference]: Start difference. First operand 7886 states and 9575 transitions. Second operand 8 states. [2020-12-23 09:42:29,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:42:29,804 INFO L93 Difference]: Finished difference Result 23900 states and 29954 transitions. [2020-12-23 09:42:29,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-23 09:42:29,805 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 154 [2020-12-23 09:42:29,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:42:29,819 INFO L225 Difference]: With dead ends: 23900 [2020-12-23 09:42:29,820 INFO L226 Difference]: Without dead ends: 18306 [2020-12-23 09:42:29,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 161 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-12-23 09:42:29,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18306 states. [2020-12-23 09:42:31,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18306 to 7210. [2020-12-23 09:42:31,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7210 states. [2020-12-23 09:42:31,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7210 states to 7210 states and 8741 transitions. [2020-12-23 09:42:31,892 INFO L78 Accepts]: Start accepts. Automaton has 7210 states and 8741 transitions. Word has length 154 [2020-12-23 09:42:31,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:42:31,892 INFO L481 AbstractCegarLoop]: Abstraction has 7210 states and 8741 transitions. [2020-12-23 09:42:31,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 09:42:31,892 INFO L276 IsEmpty]: Start isEmpty. Operand 7210 states and 8741 transitions. [2020-12-23 09:42:31,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-23 09:42:31,895 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:42:31,895 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:42:32,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-12-23 09:42:32,096 INFO L429 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:42:32,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:42:32,097 INFO L82 PathProgramCache]: Analyzing trace with hash 732311861, now seen corresponding path program 1 times [2020-12-23 09:42:32,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:42:32,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898634805] [2020-12-23 09:42:32,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:42:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:32,170 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-12-23 09:42:32,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898634805] [2020-12-23 09:42:32,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:42:32,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:42:32,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221336230] [2020-12-23 09:42:32,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:42:32,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:42:32,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:42:32,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:42:32,172 INFO L87 Difference]: Start difference. First operand 7210 states and 8741 transitions. Second operand 4 states. [2020-12-23 09:42:33,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:42:33,991 INFO L93 Difference]: Finished difference Result 12800 states and 15571 transitions. [2020-12-23 09:42:33,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:42:33,992 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-12-23 09:42:33,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:42:33,999 INFO L225 Difference]: With dead ends: 12800 [2020-12-23 09:42:34,000 INFO L226 Difference]: Without dead ends: 5987 [2020-12-23 09:42:34,007 INFO L677 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 [2020-12-23 09:42:34,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5987 states. [2020-12-23 09:42:35,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5987 to 5987. [2020-12-23 09:42:35,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5987 states. [2020-12-23 09:42:35,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5987 states to 5987 states and 7248 transitions. [2020-12-23 09:42:35,739 INFO L78 Accepts]: Start accepts. Automaton has 5987 states and 7248 transitions. Word has length 154 [2020-12-23 09:42:35,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:42:35,739 INFO L481 AbstractCegarLoop]: Abstraction has 5987 states and 7248 transitions. [2020-12-23 09:42:35,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:42:35,739 INFO L276 IsEmpty]: Start isEmpty. Operand 5987 states and 7248 transitions. [2020-12-23 09:42:35,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-12-23 09:42:35,741 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:42:35,742 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:42:35,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-12-23 09:42:35,742 INFO L429 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:42:35,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:42:35,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1764171214, now seen corresponding path program 1 times [2020-12-23 09:42:35,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:42:35,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551623193] [2020-12-23 09:42:35,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:42:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:35,980 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:42:35,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551623193] [2020-12-23 09:42:35,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084170349] [2020-12-23 09:42:35,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:42:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:36,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-23 09:42:36,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:42:36,652 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:42:36,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 09:42:36,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 12 [2020-12-23 09:42:36,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127819971] [2020-12-23 09:42:36,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 09:42:36,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:42:36,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 09:42:36,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-12-23 09:42:36,655 INFO L87 Difference]: Start difference. First operand 5987 states and 7248 transitions. Second operand 9 states. [2020-12-23 09:42:39,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:42:39,897 INFO L93 Difference]: Finished difference Result 11205 states and 13685 transitions. [2020-12-23 09:42:39,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-23 09:42:39,899 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 156 [2020-12-23 09:42:39,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:42:39,906 INFO L225 Difference]: With dead ends: 11205 [2020-12-23 09:42:39,907 INFO L226 Difference]: Without dead ends: 6636 [2020-12-23 09:42:39,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2020-12-23 09:42:39,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6636 states. [2020-12-23 09:42:41,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6636 to 5534. [2020-12-23 09:42:41,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5534 states. [2020-12-23 09:42:41,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5534 states to 5534 states and 6700 transitions. [2020-12-23 09:42:41,538 INFO L78 Accepts]: Start accepts. Automaton has 5534 states and 6700 transitions. Word has length 156 [2020-12-23 09:42:41,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:42:41,538 INFO L481 AbstractCegarLoop]: Abstraction has 5534 states and 6700 transitions. [2020-12-23 09:42:41,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 09:42:41,538 INFO L276 IsEmpty]: Start isEmpty. Operand 5534 states and 6700 transitions. [2020-12-23 09:42:41,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-12-23 09:42:41,540 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:42:41,540 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:42:41,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2020-12-23 09:42:41,742 INFO L429 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:42:41,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:42:41,743 INFO L82 PathProgramCache]: Analyzing trace with hash 491176558, now seen corresponding path program 1 times [2020-12-23 09:42:41,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:42:41,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904460680] [2020-12-23 09:42:41,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:42:41,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:41,934 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 36 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:42:41,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904460680] [2020-12-23 09:42:41,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132682538] [2020-12-23 09:42:41,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:42:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:42,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 899 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-23 09:42:42,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:42:42,432 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 09:42:42,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 09:42:42,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2020-12-23 09:42:42,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168072548] [2020-12-23 09:42:42,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:42:42,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:42:42,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:42:42,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-12-23 09:42:42,433 INFO L87 Difference]: Start difference. First operand 5534 states and 6700 transitions. Second operand 6 states. [2020-12-23 09:42:46,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:42:46,052 INFO L93 Difference]: Finished difference Result 15728 states and 19469 transitions. [2020-12-23 09:42:46,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 09:42:46,053 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2020-12-23 09:42:46,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:42:46,064 INFO L225 Difference]: With dead ends: 15728 [2020-12-23 09:42:46,064 INFO L226 Difference]: Without dead ends: 11084 [2020-12-23 09:42:46,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-12-23 09:42:46,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11084 states. [2020-12-23 09:42:47,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11084 to 5531. [2020-12-23 09:42:47,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5531 states. [2020-12-23 09:42:47,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5531 states to 5531 states and 6681 transitions. [2020-12-23 09:42:47,683 INFO L78 Accepts]: Start accepts. Automaton has 5531 states and 6681 transitions. Word has length 156 [2020-12-23 09:42:47,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:42:47,683 INFO L481 AbstractCegarLoop]: Abstraction has 5531 states and 6681 transitions. [2020-12-23 09:42:47,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:42:47,684 INFO L276 IsEmpty]: Start isEmpty. Operand 5531 states and 6681 transitions. [2020-12-23 09:42:47,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-23 09:42:47,686 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:42:47,686 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:42:47,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-12-23 09:42:47,888 INFO L429 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:42:47,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:42:47,889 INFO L82 PathProgramCache]: Analyzing trace with hash -967716982, now seen corresponding path program 1 times [2020-12-23 09:42:47,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:42:47,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128483446] [2020-12-23 09:42:47,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:42:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:48,068 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-23 09:42:48,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128483446] [2020-12-23 09:42:48,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:42:48,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 09:42:48,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691939748] [2020-12-23 09:42:48,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:42:48,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:42:48,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:42:48,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:42:48,071 INFO L87 Difference]: Start difference. First operand 5531 states and 6681 transitions. Second operand 7 states. [2020-12-23 09:42:50,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:42:50,967 INFO L93 Difference]: Finished difference Result 12383 states and 15301 transitions. [2020-12-23 09:42:50,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 09:42:50,968 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 157 [2020-12-23 09:42:50,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:42:50,976 INFO L225 Difference]: With dead ends: 12383 [2020-12-23 09:42:50,976 INFO L226 Difference]: Without dead ends: 8352 [2020-12-23 09:42:50,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-23 09:42:50,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8352 states. [2020-12-23 09:42:52,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8352 to 5527. [2020-12-23 09:42:52,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5527 states. [2020-12-23 09:42:52,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5527 states to 5527 states and 6669 transitions. [2020-12-23 09:42:52,580 INFO L78 Accepts]: Start accepts. Automaton has 5527 states and 6669 transitions. Word has length 157 [2020-12-23 09:42:52,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:42:52,580 INFO L481 AbstractCegarLoop]: Abstraction has 5527 states and 6669 transitions. [2020-12-23 09:42:52,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:42:52,580 INFO L276 IsEmpty]: Start isEmpty. Operand 5527 states and 6669 transitions. [2020-12-23 09:42:52,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-23 09:42:52,582 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:42:52,582 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:42:52,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-12-23 09:42:52,583 INFO L429 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:42:52,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:42:52,583 INFO L82 PathProgramCache]: Analyzing trace with hash -523563128, now seen corresponding path program 1 times [2020-12-23 09:42:52,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:42:52,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036508522] [2020-12-23 09:42:52,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:42:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:52,896 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:42:52,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036508522] [2020-12-23 09:42:52,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124217371] [2020-12-23 09:42:52,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:42:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:53,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-23 09:42:53,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:42:53,756 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:42:53,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:42:53,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 14] total 20 [2020-12-23 09:42:53,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829382415] [2020-12-23 09:42:53,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-23 09:42:53,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:42:53,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-23 09:42:53,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2020-12-23 09:42:53,758 INFO L87 Difference]: Start difference. First operand 5527 states and 6669 transitions. Second operand 20 states. [2020-12-23 09:43:06,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:43:06,481 INFO L93 Difference]: Finished difference Result 13589 states and 16654 transitions. [2020-12-23 09:43:06,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2020-12-23 09:43:06,481 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 157 [2020-12-23 09:43:06,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:43:06,489 INFO L225 Difference]: With dead ends: 13589 [2020-12-23 09:43:06,489 INFO L226 Difference]: Without dead ends: 9350 [2020-12-23 09:43:06,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7284 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=2964, Invalid=16218, Unknown=0, NotChecked=0, Total=19182 [2020-12-23 09:43:06,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9350 states. [2020-12-23 09:43:08,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9350 to 5346. [2020-12-23 09:43:08,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5346 states. [2020-12-23 09:43:08,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5346 states to 5346 states and 6453 transitions. [2020-12-23 09:43:08,165 INFO L78 Accepts]: Start accepts. Automaton has 5346 states and 6453 transitions. Word has length 157 [2020-12-23 09:43:08,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:43:08,166 INFO L481 AbstractCegarLoop]: Abstraction has 5346 states and 6453 transitions. [2020-12-23 09:43:08,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-23 09:43:08,166 INFO L276 IsEmpty]: Start isEmpty. Operand 5346 states and 6453 transitions. [2020-12-23 09:43:08,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-12-23 09:43:08,168 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:43:08,168 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:43:08,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2020-12-23 09:43:08,369 INFO L429 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:43:08,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:43:08,370 INFO L82 PathProgramCache]: Analyzing trace with hash 479672699, now seen corresponding path program 1 times [2020-12-23 09:43:08,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:43:08,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000131359] [2020-12-23 09:43:08,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:43:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:43:08,595 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 40 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:43:08,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000131359] [2020-12-23 09:43:08,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037842725] [2020-12-23 09:43:08,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:43:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:43:08,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 913 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-23 09:43:08,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:43:09,249 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 48 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:43:09,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:43:09,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2020-12-23 09:43:09,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234529442] [2020-12-23 09:43:09,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 09:43:09,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:43:09,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 09:43:09,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-12-23 09:43:09,252 INFO L87 Difference]: Start difference. First operand 5346 states and 6453 transitions. Second operand 13 states. [2020-12-23 09:43:14,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:43:14,534 INFO L93 Difference]: Finished difference Result 13172 states and 16134 transitions. [2020-12-23 09:43:14,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-12-23 09:43:14,535 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 163 [2020-12-23 09:43:14,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:43:14,544 INFO L225 Difference]: With dead ends: 13172 [2020-12-23 09:43:14,544 INFO L226 Difference]: Without dead ends: 8882 [2020-12-23 09:43:14,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=472, Invalid=1508, Unknown=0, NotChecked=0, Total=1980 [2020-12-23 09:43:14,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8882 states. [2020-12-23 09:43:16,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8882 to 5273. [2020-12-23 09:43:16,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5273 states. [2020-12-23 09:43:16,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5273 states to 5273 states and 6353 transitions. [2020-12-23 09:43:16,257 INFO L78 Accepts]: Start accepts. Automaton has 5273 states and 6353 transitions. Word has length 163 [2020-12-23 09:43:16,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:43:16,257 INFO L481 AbstractCegarLoop]: Abstraction has 5273 states and 6353 transitions. [2020-12-23 09:43:16,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 09:43:16,257 INFO L276 IsEmpty]: Start isEmpty. Operand 5273 states and 6353 transitions. [2020-12-23 09:43:16,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-12-23 09:43:16,259 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:43:16,259 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:43:16,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:43:16,463 INFO L429 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:43:16,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:43:16,464 INFO L82 PathProgramCache]: Analyzing trace with hash 637031131, now seen corresponding path program 1 times [2020-12-23 09:43:16,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:43:16,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018338197] [2020-12-23 09:43:16,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:43:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:43:16,696 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 49 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:43:16,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018338197] [2020-12-23 09:43:16,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79364217] [2020-12-23 09:43:16,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:43:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:43:16,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 913 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-23 09:43:16,952 INFO L286 TraceCheckSpWp]: Computing forward predicates...