/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.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 09:39:21,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 09:39:21,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 09:39:21,533 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 09:39:21,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 09:39:21,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 09:39:21,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 09:39:21,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 09:39:21,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 09:39:21,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 09:39:21,565 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 09:39:21,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 09:39:21,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 09:39:21,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 09:39:21,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 09:39:21,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 09:39:21,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 09:39:21,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 09:39:21,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 09:39:21,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 09:39:21,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 09:39:21,601 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 09:39:21,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 09:39:21,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 09:39:21,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 09:39:21,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 09:39:21,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 09:39:21,619 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 09:39:21,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 09:39:21,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 09:39:21,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 09:39:21,624 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 09:39:21,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 09:39:21,627 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 09:39:21,628 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 09:39:21,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 09:39:21,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 09:39:21,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 09:39:21,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 09:39:21,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 09:39:21,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 09:39:21,633 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 09:39:21,699 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 09:39:21,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 09:39:21,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 09:39:21,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 09:39:21,705 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 09:39:21,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 09:39:21,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 09:39:21,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 09:39:21,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 09:39:21,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 09:39:21,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 09:39:21,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 09:39:21,708 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 09:39:21,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 09:39:21,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 09:39:21,708 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 09:39:21,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 09:39:21,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 09:39:21,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 09:39:21,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 09:39:21,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 09:39:21,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 09:39:21,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 09:39:21,710 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 09:39:21,710 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 09:39:21,710 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 09:39:22,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 09:39:22,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 09:39:22,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 09:39:22,142 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 09:39:22,143 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 09:39:22,144 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c [2020-12-23 09:39:22,238 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7a5989507/53c8c9204f6b4ad5a2248663d7d718ac/FLAG43b2d2108 [2020-12-23 09:39:22,955 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 09:39:22,956 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c [2020-12-23 09:39:22,979 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7a5989507/53c8c9204f6b4ad5a2248663d7d718ac/FLAG43b2d2108 [2020-12-23 09:39:23,257 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7a5989507/53c8c9204f6b4ad5a2248663d7d718ac [2020-12-23 09:39:23,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 09:39:23,263 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 09:39:23,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 09:39:23,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 09:39:23,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 09:39:23,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:39:23" (1/1) ... [2020-12-23 09:39:23,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66cad491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:39:23, skipping insertion in model container [2020-12-23 09:39:23,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:39:23" (1/1) ... [2020-12-23 09:39:23,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 09:39:23,356 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 09:39:23,671 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.ufo.BOUNDED-10.pals.c[14698,14711] [2020-12-23 09:39:23,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:39:23,698 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 09:39:23,848 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.ufo.BOUNDED-10.pals.c[14698,14711] [2020-12-23 09:39:23,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:39:23,879 INFO L208 MainTranslator]: Completed translation [2020-12-23 09:39:23,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:39:23 WrapperNode [2020-12-23 09:39:23,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 09:39:23,882 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 09:39:23,882 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 09:39:23,882 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 09:39:23,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:39:23" (1/1) ... [2020-12-23 09:39:23,921 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:39:23" (1/1) ... [2020-12-23 09:39:23,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 09:39:23,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 09:39:23,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 09:39:23,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 09:39:24,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:39:23" (1/1) ... [2020-12-23 09:39:24,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:39:23" (1/1) ... [2020-12-23 09:39:24,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:39:23" (1/1) ... [2020-12-23 09:39:24,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:39:23" (1/1) ... [2020-12-23 09:39:24,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:39:23" (1/1) ... [2020-12-23 09:39:24,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:39:23" (1/1) ... [2020-12-23 09:39:24,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:39:23" (1/1) ... [2020-12-23 09:39:24,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 09:39:24,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 09:39:24,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 09:39:24,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 09:39:24,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:39:23" (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 09:39:24,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 09:39:24,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 09:39:24,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 09:39:24,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 09:39:25,902 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 09:39:25,903 INFO L299 CfgBuilder]: Removed 123 assume(true) statements. [2020-12-23 09:39:25,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:39:25 BoogieIcfgContainer [2020-12-23 09:39:25,910 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 09:39:25,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 09:39:25,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 09:39:25,922 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 09:39:25,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 09:39:23" (1/3) ... [2020-12-23 09:39:25,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dea81a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:39:25, skipping insertion in model container [2020-12-23 09:39:25,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:39:23" (2/3) ... [2020-12-23 09:39:25,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dea81a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:39:25, skipping insertion in model container [2020-12-23 09:39:25,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:39:25" (3/3) ... [2020-12-23 09:39:25,935 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c [2020-12-23 09:39:25,951 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 09:39:25,961 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 23 error locations. [2020-12-23 09:39:25,986 INFO L253 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2020-12-23 09:39:26,023 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 09:39:26,024 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 09:39:26,024 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 09:39:26,024 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 09:39:26,024 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 09:39:26,024 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 09:39:26,025 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 09:39:26,025 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 09:39:26,057 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states. [2020-12-23 09:39:26,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 09:39:26,067 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:26,068 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 09:39:26,069 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 09:39:26,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:26,077 INFO L82 PathProgramCache]: Analyzing trace with hash 349506240, now seen corresponding path program 1 times [2020-12-23 09:39:26,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:26,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658962297] [2020-12-23 09:39:26,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:26,353 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 09:39:26,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658962297] [2020-12-23 09:39:26,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:26,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:39:26,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064647031] [2020-12-23 09:39:26,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 09:39:26,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:26,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 09:39:26,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 09:39:26,393 INFO L87 Difference]: Start difference. First operand 297 states. Second operand 2 states. [2020-12-23 09:39:26,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:26,468 INFO L93 Difference]: Finished difference Result 578 states and 901 transitions. [2020-12-23 09:39:26,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 09:39:26,470 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 33 [2020-12-23 09:39:26,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:26,515 INFO L225 Difference]: With dead ends: 578 [2020-12-23 09:39:26,515 INFO L226 Difference]: Without dead ends: 293 [2020-12-23 09:39:26,521 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 09:39:26,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-12-23 09:39:26,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2020-12-23 09:39:26,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-12-23 09:39:26,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 429 transitions. [2020-12-23 09:39:26,608 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 429 transitions. Word has length 33 [2020-12-23 09:39:26,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:26,608 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 429 transitions. [2020-12-23 09:39:26,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 09:39:26,609 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 429 transitions. [2020-12-23 09:39:26,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 09:39:26,611 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:26,611 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 09:39:26,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 09:39:26,612 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 09:39:26,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:26,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1047215368, now seen corresponding path program 1 times [2020-12-23 09:39:26,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:26,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022256159] [2020-12-23 09:39:26,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:26,802 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 09:39:26,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022256159] [2020-12-23 09:39:26,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:26,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:39:26,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957846099] [2020-12-23 09:39:26,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:39:26,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:26,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:39:26,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:39:26,807 INFO L87 Difference]: Start difference. First operand 293 states and 429 transitions. Second operand 4 states. [2020-12-23 09:39:26,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:26,928 INFO L93 Difference]: Finished difference Result 572 states and 832 transitions. [2020-12-23 09:39:26,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:39:26,929 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-12-23 09:39:26,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:26,934 INFO L225 Difference]: With dead ends: 572 [2020-12-23 09:39:26,934 INFO L226 Difference]: Without dead ends: 293 [2020-12-23 09:39:26,937 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 09:39:26,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-12-23 09:39:26,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2020-12-23 09:39:26,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-12-23 09:39:26,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 417 transitions. [2020-12-23 09:39:26,965 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 417 transitions. Word has length 33 [2020-12-23 09:39:26,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:26,965 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 417 transitions. [2020-12-23 09:39:26,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:39:26,966 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 417 transitions. [2020-12-23 09:39:26,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-23 09:39:26,968 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:26,968 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 09:39:26,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 09:39:26,969 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 09:39:26,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:26,970 INFO L82 PathProgramCache]: Analyzing trace with hash -600938825, now seen corresponding path program 1 times [2020-12-23 09:39:26,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:26,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116598249] [2020-12-23 09:39:26,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:27,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:27,195 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 09:39:27,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116598249] [2020-12-23 09:39:27,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:27,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:39:27,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979855644] [2020-12-23 09:39:27,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:39:27,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:27,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:39:27,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:39:27,199 INFO L87 Difference]: Start difference. First operand 293 states and 417 transitions. Second operand 3 states. [2020-12-23 09:39:27,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:27,290 INFO L93 Difference]: Finished difference Result 603 states and 867 transitions. [2020-12-23 09:39:27,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:39:27,291 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-12-23 09:39:27,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:27,295 INFO L225 Difference]: With dead ends: 603 [2020-12-23 09:39:27,295 INFO L226 Difference]: Without dead ends: 327 [2020-12-23 09:39:27,298 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 09:39:27,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-12-23 09:39:27,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 269. [2020-12-23 09:39:27,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-12-23 09:39:27,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 381 transitions. [2020-12-23 09:39:27,322 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 381 transitions. Word has length 44 [2020-12-23 09:39:27,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:27,323 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 381 transitions. [2020-12-23 09:39:27,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:39:27,323 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 381 transitions. [2020-12-23 09:39:27,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-23 09:39:27,326 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:27,326 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 09:39:27,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 09:39:27,327 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 09:39:27,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:27,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1585020226, now seen corresponding path program 1 times [2020-12-23 09:39:27,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:27,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870124501] [2020-12-23 09:39:27,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:27,447 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 09:39:27,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870124501] [2020-12-23 09:39:27,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:27,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:39:27,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722138667] [2020-12-23 09:39:27,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:39:27,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:27,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:39:27,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:39:27,453 INFO L87 Difference]: Start difference. First operand 269 states and 381 transitions. Second operand 3 states. [2020-12-23 09:39:27,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:27,522 INFO L93 Difference]: Finished difference Result 750 states and 1074 transitions. [2020-12-23 09:39:27,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:39:27,524 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-12-23 09:39:27,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:27,528 INFO L225 Difference]: With dead ends: 750 [2020-12-23 09:39:27,529 INFO L226 Difference]: Without dead ends: 498 [2020-12-23 09:39:27,530 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 09:39:27,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2020-12-23 09:39:27,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 304. [2020-12-23 09:39:27,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-12-23 09:39:27,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 433 transitions. [2020-12-23 09:39:27,568 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 433 transitions. Word has length 53 [2020-12-23 09:39:27,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:27,569 INFO L481 AbstractCegarLoop]: Abstraction has 304 states and 433 transitions. [2020-12-23 09:39:27,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:39:27,569 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 433 transitions. [2020-12-23 09:39:27,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-23 09:39:27,572 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:27,572 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 09:39:27,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 09:39:27,572 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 09:39:27,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:27,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1396202520, now seen corresponding path program 1 times [2020-12-23 09:39:27,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:27,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995700844] [2020-12-23 09:39:27,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:27,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:27,687 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 09:39:27,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995700844] [2020-12-23 09:39:27,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:27,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:39:27,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337109680] [2020-12-23 09:39:27,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:39:27,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:27,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:39:27,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:39:27,692 INFO L87 Difference]: Start difference. First operand 304 states and 433 transitions. Second operand 3 states. [2020-12-23 09:39:27,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:27,752 INFO L93 Difference]: Finished difference Result 834 states and 1199 transitions. [2020-12-23 09:39:27,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:39:27,753 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-12-23 09:39:27,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:27,758 INFO L225 Difference]: With dead ends: 834 [2020-12-23 09:39:27,758 INFO L226 Difference]: Without dead ends: 547 [2020-12-23 09:39:27,759 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 09:39:27,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2020-12-23 09:39:27,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 329. [2020-12-23 09:39:27,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2020-12-23 09:39:27,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 471 transitions. [2020-12-23 09:39:27,779 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 471 transitions. Word has length 54 [2020-12-23 09:39:27,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:27,780 INFO L481 AbstractCegarLoop]: Abstraction has 329 states and 471 transitions. [2020-12-23 09:39:27,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:39:27,780 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 471 transitions. [2020-12-23 09:39:27,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-23 09:39:27,784 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:27,784 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 09:39:27,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 09:39:27,784 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 09:39:27,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:27,785 INFO L82 PathProgramCache]: Analyzing trace with hash -716144150, now seen corresponding path program 1 times [2020-12-23 09:39:27,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:27,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065941639] [2020-12-23 09:39:27,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:27,911 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 09:39:27,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065941639] [2020-12-23 09:39:27,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:27,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:39:27,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275394656] [2020-12-23 09:39:27,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:39:27,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:27,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:39:27,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:39:27,914 INFO L87 Difference]: Start difference. First operand 329 states and 471 transitions. Second operand 5 states. [2020-12-23 09:39:28,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:28,337 INFO L93 Difference]: Finished difference Result 1023 states and 1476 transitions. [2020-12-23 09:39:28,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:39:28,338 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-12-23 09:39:28,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:28,345 INFO L225 Difference]: With dead ends: 1023 [2020-12-23 09:39:28,345 INFO L226 Difference]: Without dead ends: 711 [2020-12-23 09:39:28,346 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 09:39:28,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2020-12-23 09:39:28,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 427. [2020-12-23 09:39:28,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-12-23 09:39:28,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 608 transitions. [2020-12-23 09:39:28,373 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 608 transitions. Word has length 54 [2020-12-23 09:39:28,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:28,374 INFO L481 AbstractCegarLoop]: Abstraction has 427 states and 608 transitions. [2020-12-23 09:39:28,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:39:28,374 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 608 transitions. [2020-12-23 09:39:28,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-23 09:39:28,381 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:28,381 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 09:39:28,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 09:39:28,381 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 09:39:28,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:28,383 INFO L82 PathProgramCache]: Analyzing trace with hash 153208358, now seen corresponding path program 1 times [2020-12-23 09:39:28,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:28,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932327578] [2020-12-23 09:39:28,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:28,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:28,559 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 09:39:28,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932327578] [2020-12-23 09:39:28,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:28,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:39:28,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168156759] [2020-12-23 09:39:28,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:39:28,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:28,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:39:28,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:39:28,573 INFO L87 Difference]: Start difference. First operand 427 states and 608 transitions. Second operand 5 states. [2020-12-23 09:39:28,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:28,970 INFO L93 Difference]: Finished difference Result 1027 states and 1476 transitions. [2020-12-23 09:39:28,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:39:28,971 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-12-23 09:39:28,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:28,975 INFO L225 Difference]: With dead ends: 1027 [2020-12-23 09:39:28,976 INFO L226 Difference]: Without dead ends: 715 [2020-12-23 09:39:28,977 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 09:39:28,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2020-12-23 09:39:29,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 435. [2020-12-23 09:39:29,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-12-23 09:39:29,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 616 transitions. [2020-12-23 09:39:29,004 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 616 transitions. Word has length 55 [2020-12-23 09:39:29,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:29,004 INFO L481 AbstractCegarLoop]: Abstraction has 435 states and 616 transitions. [2020-12-23 09:39:29,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:39:29,004 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 616 transitions. [2020-12-23 09:39:29,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-23 09:39:29,005 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:29,006 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 09:39:29,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 09:39:29,006 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 09:39:29,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:29,007 INFO L82 PathProgramCache]: Analyzing trace with hash -748848364, now seen corresponding path program 1 times [2020-12-23 09:39:29,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:29,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590846918] [2020-12-23 09:39:29,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:29,139 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 09:39:29,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590846918] [2020-12-23 09:39:29,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:29,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:39:29,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046620167] [2020-12-23 09:39:29,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:39:29,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:29,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:39:29,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:39:29,142 INFO L87 Difference]: Start difference. First operand 435 states and 616 transitions. Second operand 4 states. [2020-12-23 09:39:29,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:29,519 INFO L93 Difference]: Finished difference Result 1027 states and 1468 transitions. [2020-12-23 09:39:29,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:39:29,520 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-12-23 09:39:29,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:29,526 INFO L225 Difference]: With dead ends: 1027 [2020-12-23 09:39:29,526 INFO L226 Difference]: Without dead ends: 715 [2020-12-23 09:39:29,529 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 09:39:29,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2020-12-23 09:39:29,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 435. [2020-12-23 09:39:29,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-12-23 09:39:29,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 612 transitions. [2020-12-23 09:39:29,568 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 612 transitions. Word has length 57 [2020-12-23 09:39:29,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:29,570 INFO L481 AbstractCegarLoop]: Abstraction has 435 states and 612 transitions. [2020-12-23 09:39:29,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:39:29,575 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 612 transitions. [2020-12-23 09:39:29,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-23 09:39:29,576 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:29,576 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 09:39:29,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 09:39:29,577 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 09:39:29,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:29,577 INFO L82 PathProgramCache]: Analyzing trace with hash 2035065116, now seen corresponding path program 1 times [2020-12-23 09:39:29,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:29,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992200156] [2020-12-23 09:39:29,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:29,651 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 09:39:29,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992200156] [2020-12-23 09:39:29,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:29,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:39:29,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73080779] [2020-12-23 09:39:29,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:39:29,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:29,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:39:29,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:39:29,654 INFO L87 Difference]: Start difference. First operand 435 states and 612 transitions. Second operand 3 states. [2020-12-23 09:39:29,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:29,715 INFO L93 Difference]: Finished difference Result 875 states and 1255 transitions. [2020-12-23 09:39:29,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:39:29,716 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2020-12-23 09:39:29,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:29,720 INFO L225 Difference]: With dead ends: 875 [2020-12-23 09:39:29,720 INFO L226 Difference]: Without dead ends: 563 [2020-12-23 09:39:29,721 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 09:39:29,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-12-23 09:39:29,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 430. [2020-12-23 09:39:29,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-12-23 09:39:29,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 604 transitions. [2020-12-23 09:39:29,749 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 604 transitions. Word has length 58 [2020-12-23 09:39:29,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:29,753 INFO L481 AbstractCegarLoop]: Abstraction has 430 states and 604 transitions. [2020-12-23 09:39:29,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:39:29,753 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 604 transitions. [2020-12-23 09:39:29,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-23 09:39:29,755 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:29,755 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 09:39:29,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 09:39:29,756 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 09:39:29,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:29,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1833641356, now seen corresponding path program 1 times [2020-12-23 09:39:29,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:29,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722881766] [2020-12-23 09:39:29,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:29,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:29,845 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 09:39:29,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722881766] [2020-12-23 09:39:29,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:29,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:39:29,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119162583] [2020-12-23 09:39:29,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:39:29,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:29,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:39:29,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:39:29,852 INFO L87 Difference]: Start difference. First operand 430 states and 604 transitions. Second operand 3 states. [2020-12-23 09:39:29,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:29,989 INFO L93 Difference]: Finished difference Result 874 states and 1254 transitions. [2020-12-23 09:39:29,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:39:29,990 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-12-23 09:39:29,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:29,994 INFO L225 Difference]: With dead ends: 874 [2020-12-23 09:39:29,994 INFO L226 Difference]: Without dead ends: 567 [2020-12-23 09:39:29,996 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 09:39:29,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2020-12-23 09:39:30,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 410. [2020-12-23 09:39:30,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2020-12-23 09:39:30,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 572 transitions. [2020-12-23 09:39:30,023 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 572 transitions. Word has length 62 [2020-12-23 09:39:30,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:30,023 INFO L481 AbstractCegarLoop]: Abstraction has 410 states and 572 transitions. [2020-12-23 09:39:30,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:39:30,023 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 572 transitions. [2020-12-23 09:39:30,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-23 09:39:30,024 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:30,025 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 09:39:30,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 09:39:30,025 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 09:39:30,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:30,026 INFO L82 PathProgramCache]: Analyzing trace with hash -532758708, now seen corresponding path program 1 times [2020-12-23 09:39:30,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:30,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970287599] [2020-12-23 09:39:30,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:30,092 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 09:39:30,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970287599] [2020-12-23 09:39:30,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:30,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:39:30,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886506983] [2020-12-23 09:39:30,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:39:30,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:30,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:39:30,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:39:30,095 INFO L87 Difference]: Start difference. First operand 410 states and 572 transitions. Second operand 3 states. [2020-12-23 09:39:30,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:30,188 INFO L93 Difference]: Finished difference Result 842 states and 1198 transitions. [2020-12-23 09:39:30,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:39:30,189 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-23 09:39:30,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:30,193 INFO L225 Difference]: With dead ends: 842 [2020-12-23 09:39:30,193 INFO L226 Difference]: Without dead ends: 555 [2020-12-23 09:39:30,194 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 09:39:30,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-12-23 09:39:30,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 398. [2020-12-23 09:39:30,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-12-23 09:39:30,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 554 transitions. [2020-12-23 09:39:30,222 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 554 transitions. Word has length 66 [2020-12-23 09:39:30,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:30,222 INFO L481 AbstractCegarLoop]: Abstraction has 398 states and 554 transitions. [2020-12-23 09:39:30,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:39:30,222 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 554 transitions. [2020-12-23 09:39:30,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 09:39:30,223 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:30,223 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 09:39:30,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 09:39:30,224 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 09:39:30,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:30,225 INFO L82 PathProgramCache]: Analyzing trace with hash 949999250, now seen corresponding path program 1 times [2020-12-23 09:39:30,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:30,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972228938] [2020-12-23 09:39:30,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:30,336 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 09:39:30,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972228938] [2020-12-23 09:39:30,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:30,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 09:39:30,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352249710] [2020-12-23 09:39:30,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:39:30,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:30,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:39:30,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:39:30,339 INFO L87 Difference]: Start difference. First operand 398 states and 554 transitions. Second operand 6 states. [2020-12-23 09:39:30,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:30,699 INFO L93 Difference]: Finished difference Result 1460 states and 2069 transitions. [2020-12-23 09:39:30,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 09:39:30,700 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-12-23 09:39:30,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:30,707 INFO L225 Difference]: With dead ends: 1460 [2020-12-23 09:39:30,708 INFO L226 Difference]: Without dead ends: 1185 [2020-12-23 09:39:30,709 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 09:39:30,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2020-12-23 09:39:30,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 419. [2020-12-23 09:39:30,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-12-23 09:39:30,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 578 transitions. [2020-12-23 09:39:30,789 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 578 transitions. Word has length 67 [2020-12-23 09:39:30,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:30,789 INFO L481 AbstractCegarLoop]: Abstraction has 419 states and 578 transitions. [2020-12-23 09:39:30,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:39:30,790 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 578 transitions. [2020-12-23 09:39:30,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-23 09:39:30,792 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:30,792 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 09:39:30,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 09:39:30,793 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 09:39:30,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:30,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1947699729, now seen corresponding path program 1 times [2020-12-23 09:39:30,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:30,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176158045] [2020-12-23 09:39:30,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:30,907 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 09:39:30,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176158045] [2020-12-23 09:39:30,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:30,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:39:30,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277887352] [2020-12-23 09:39:30,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:39:30,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:30,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:39:30,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:39:30,911 INFO L87 Difference]: Start difference. First operand 419 states and 578 transitions. Second operand 3 states. [2020-12-23 09:39:31,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:31,090 INFO L93 Difference]: Finished difference Result 859 states and 1214 transitions. [2020-12-23 09:39:31,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:39:31,091 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-23 09:39:31,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:31,094 INFO L225 Difference]: With dead ends: 859 [2020-12-23 09:39:31,095 INFO L226 Difference]: Without dead ends: 584 [2020-12-23 09:39:31,096 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 09:39:31,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2020-12-23 09:39:31,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 399. [2020-12-23 09:39:31,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2020-12-23 09:39:31,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 546 transitions. [2020-12-23 09:39:31,129 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 546 transitions. Word has length 69 [2020-12-23 09:39:31,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:31,129 INFO L481 AbstractCegarLoop]: Abstraction has 399 states and 546 transitions. [2020-12-23 09:39:31,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:39:31,130 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 546 transitions. [2020-12-23 09:39:31,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-23 09:39:31,131 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:31,131 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 09:39:31,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 09:39:31,131 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 09:39:31,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:31,132 INFO L82 PathProgramCache]: Analyzing trace with hash -344815767, now seen corresponding path program 1 times [2020-12-23 09:39:31,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:31,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896714322] [2020-12-23 09:39:31,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:31,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:31,195 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 09:39:31,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896714322] [2020-12-23 09:39:31,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:31,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:39:31,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670233099] [2020-12-23 09:39:31,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:39:31,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:31,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:39:31,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:39:31,198 INFO L87 Difference]: Start difference. First operand 399 states and 546 transitions. Second operand 3 states. [2020-12-23 09:39:31,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:31,311 INFO L93 Difference]: Finished difference Result 827 states and 1158 transitions. [2020-12-23 09:39:31,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:39:31,312 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-23 09:39:31,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:31,316 INFO L225 Difference]: With dead ends: 827 [2020-12-23 09:39:31,316 INFO L226 Difference]: Without dead ends: 572 [2020-12-23 09:39:31,317 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 09:39:31,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2020-12-23 09:39:31,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 387. [2020-12-23 09:39:31,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-12-23 09:39:31,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 528 transitions. [2020-12-23 09:39:31,353 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 528 transitions. Word has length 73 [2020-12-23 09:39:31,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:31,353 INFO L481 AbstractCegarLoop]: Abstraction has 387 states and 528 transitions. [2020-12-23 09:39:31,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:39:31,354 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 528 transitions. [2020-12-23 09:39:31,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-23 09:39:31,355 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:31,355 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 09:39:31,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 09:39:31,355 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 09:39:31,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:31,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1959055909, now seen corresponding path program 1 times [2020-12-23 09:39:31,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:31,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363972143] [2020-12-23 09:39:31,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:31,586 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 09:39:31,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363972143] [2020-12-23 09:39:31,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:31,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 09:39:31,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507768576] [2020-12-23 09:39:31,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:39:31,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:31,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:39:31,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:39:31,590 INFO L87 Difference]: Start difference. First operand 387 states and 528 transitions. Second operand 6 states. [2020-12-23 09:39:31,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:31,937 INFO L93 Difference]: Finished difference Result 1103 states and 1542 transitions. [2020-12-23 09:39:31,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 09:39:31,938 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-12-23 09:39:31,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:31,943 INFO L225 Difference]: With dead ends: 1103 [2020-12-23 09:39:31,943 INFO L226 Difference]: Without dead ends: 860 [2020-12-23 09:39:31,946 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 09:39:31,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2020-12-23 09:39:31,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 412. [2020-12-23 09:39:31,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-12-23 09:39:31,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 563 transitions. [2020-12-23 09:39:31,990 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 563 transitions. Word has length 76 [2020-12-23 09:39:31,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:31,990 INFO L481 AbstractCegarLoop]: Abstraction has 412 states and 563 transitions. [2020-12-23 09:39:31,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:39:31,990 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 563 transitions. [2020-12-23 09:39:31,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-23 09:39:31,991 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:31,992 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 09:39:31,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 09:39:31,992 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 09:39:31,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:31,993 INFO L82 PathProgramCache]: Analyzing trace with hash 317146558, now seen corresponding path program 1 times [2020-12-23 09:39:31,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:31,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4296554] [2020-12-23 09:39:31,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:32,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:32,180 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 09:39:32,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4296554] [2020-12-23 09:39:32,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:32,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 09:39:32,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792622518] [2020-12-23 09:39:32,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:39:32,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:32,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:39:32,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:39:32,186 INFO L87 Difference]: Start difference. First operand 412 states and 563 transitions. Second operand 7 states. [2020-12-23 09:39:32,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:32,768 INFO L93 Difference]: Finished difference Result 1432 states and 1991 transitions. [2020-12-23 09:39:32,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 09:39:32,769 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 76 [2020-12-23 09:39:32,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:32,775 INFO L225 Difference]: With dead ends: 1432 [2020-12-23 09:39:32,775 INFO L226 Difference]: Without dead ends: 1171 [2020-12-23 09:39:32,776 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 09:39:32,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2020-12-23 09:39:32,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 440. [2020-12-23 09:39:32,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2020-12-23 09:39:32,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 594 transitions. [2020-12-23 09:39:32,830 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 594 transitions. Word has length 76 [2020-12-23 09:39:32,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:32,831 INFO L481 AbstractCegarLoop]: Abstraction has 440 states and 594 transitions. [2020-12-23 09:39:32,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:39:32,831 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 594 transitions. [2020-12-23 09:39:32,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-23 09:39:32,832 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:32,832 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 09:39:32,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 09:39:32,832 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 09:39:32,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:32,833 INFO L82 PathProgramCache]: Analyzing trace with hash 917353494, now seen corresponding path program 1 times [2020-12-23 09:39:32,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:32,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311862827] [2020-12-23 09:39:32,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:32,906 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 09:39:32,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311862827] [2020-12-23 09:39:32,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:32,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:39:32,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433061369] [2020-12-23 09:39:32,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:39:32,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:32,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:39:32,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:39:32,909 INFO L87 Difference]: Start difference. First operand 440 states and 594 transitions. Second operand 4 states. [2020-12-23 09:39:33,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:33,146 INFO L93 Difference]: Finished difference Result 1131 states and 1543 transitions. [2020-12-23 09:39:33,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:39:33,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-12-23 09:39:33,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:33,152 INFO L225 Difference]: With dead ends: 1131 [2020-12-23 09:39:33,152 INFO L226 Difference]: Without dead ends: 864 [2020-12-23 09:39:33,153 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 09:39:33,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2020-12-23 09:39:33,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 661. [2020-12-23 09:39:33,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 661 states. [2020-12-23 09:39:33,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 882 transitions. [2020-12-23 09:39:33,223 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 882 transitions. Word has length 76 [2020-12-23 09:39:33,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:33,223 INFO L481 AbstractCegarLoop]: Abstraction has 661 states and 882 transitions. [2020-12-23 09:39:33,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:39:33,223 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 882 transitions. [2020-12-23 09:39:33,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-23 09:39:33,225 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:33,225 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 09:39:33,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 09:39:33,225 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 09:39:33,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:33,226 INFO L82 PathProgramCache]: Analyzing trace with hash 956639496, now seen corresponding path program 1 times [2020-12-23 09:39:33,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:33,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333253920] [2020-12-23 09:39:33,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:33,304 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 09:39:33,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333253920] [2020-12-23 09:39:33,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:33,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:39:33,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019691059] [2020-12-23 09:39:33,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:39:33,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:33,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:39:33,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:39:33,307 INFO L87 Difference]: Start difference. First operand 661 states and 882 transitions. Second operand 3 states. [2020-12-23 09:39:33,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:33,452 INFO L93 Difference]: Finished difference Result 1154 states and 1574 transitions. [2020-12-23 09:39:33,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:39:33,453 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-23 09:39:33,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:33,458 INFO L225 Difference]: With dead ends: 1154 [2020-12-23 09:39:33,459 INFO L226 Difference]: Without dead ends: 772 [2020-12-23 09:39:33,460 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 09:39:33,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2020-12-23 09:39:33,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 657. [2020-12-23 09:39:33,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 657 states. [2020-12-23 09:39:33,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 875 transitions. [2020-12-23 09:39:33,531 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 875 transitions. Word has length 77 [2020-12-23 09:39:33,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:33,531 INFO L481 AbstractCegarLoop]: Abstraction has 657 states and 875 transitions. [2020-12-23 09:39:33,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:39:33,531 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 875 transitions. [2020-12-23 09:39:33,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 09:39:33,533 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:33,533 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 09:39:33,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-23 09:39:33,533 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 09:39:33,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:33,534 INFO L82 PathProgramCache]: Analyzing trace with hash 341178161, now seen corresponding path program 1 times [2020-12-23 09:39:33,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:33,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889595373] [2020-12-23 09:39:33,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:33,603 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 09:39:33,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889595373] [2020-12-23 09:39:33,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:33,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:39:33,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204742384] [2020-12-23 09:39:33,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:39:33,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:33,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:39:33,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:39:33,605 INFO L87 Difference]: Start difference. First operand 657 states and 875 transitions. Second operand 4 states. [2020-12-23 09:39:33,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:33,866 INFO L93 Difference]: Finished difference Result 1469 states and 1979 transitions. [2020-12-23 09:39:33,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:39:33,867 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-12-23 09:39:33,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:33,873 INFO L225 Difference]: With dead ends: 1469 [2020-12-23 09:39:33,873 INFO L226 Difference]: Without dead ends: 1077 [2020-12-23 09:39:33,874 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 09:39:33,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2020-12-23 09:39:33,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 876. [2020-12-23 09:39:33,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 876 states. [2020-12-23 09:39:33,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1157 transitions. [2020-12-23 09:39:33,960 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1157 transitions. Word has length 78 [2020-12-23 09:39:33,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:33,961 INFO L481 AbstractCegarLoop]: Abstraction has 876 states and 1157 transitions. [2020-12-23 09:39:33,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:39:33,961 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1157 transitions. [2020-12-23 09:39:33,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 09:39:33,963 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:33,963 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 09:39:33,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-23 09:39:33,964 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 09:39:33,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:33,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1360037685, now seen corresponding path program 1 times [2020-12-23 09:39:33,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:33,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374821855] [2020-12-23 09:39:33,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:34,131 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 09:39:34,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374821855] [2020-12-23 09:39:34,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:34,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 09:39:34,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42353219] [2020-12-23 09:39:34,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:39:34,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:34,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:39:34,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:39:34,134 INFO L87 Difference]: Start difference. First operand 876 states and 1157 transitions. Second operand 6 states. [2020-12-23 09:39:34,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:34,987 INFO L93 Difference]: Finished difference Result 3260 states and 4377 transitions. [2020-12-23 09:39:34,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 09:39:34,988 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-12-23 09:39:34,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:35,009 INFO L225 Difference]: With dead ends: 3260 [2020-12-23 09:39:35,010 INFO L226 Difference]: Without dead ends: 2737 [2020-12-23 09:39:35,013 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 09:39:35,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2020-12-23 09:39:35,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 1002. [2020-12-23 09:39:35,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-12-23 09:39:35,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1304 transitions. [2020-12-23 09:39:35,215 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1304 transitions. Word has length 78 [2020-12-23 09:39:35,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:35,216 INFO L481 AbstractCegarLoop]: Abstraction has 1002 states and 1304 transitions. [2020-12-23 09:39:35,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:39:35,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1304 transitions. [2020-12-23 09:39:35,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-23 09:39:35,219 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:35,219 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 09:39:35,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-23 09:39:35,220 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 09:39:35,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:35,221 INFO L82 PathProgramCache]: Analyzing trace with hash -504696615, now seen corresponding path program 1 times [2020-12-23 09:39:35,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:35,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227379827] [2020-12-23 09:39:35,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:35,295 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 09:39:35,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227379827] [2020-12-23 09:39:35,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:35,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:39:35,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226721957] [2020-12-23 09:39:35,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:39:35,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:35,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:39:35,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:39:35,298 INFO L87 Difference]: Start difference. First operand 1002 states and 1304 transitions. Second operand 4 states. [2020-12-23 09:39:35,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:35,633 INFO L93 Difference]: Finished difference Result 2409 states and 3182 transitions. [2020-12-23 09:39:35,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:39:35,634 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-12-23 09:39:35,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:35,645 INFO L225 Difference]: With dead ends: 2409 [2020-12-23 09:39:35,646 INFO L226 Difference]: Without dead ends: 1838 [2020-12-23 09:39:35,648 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 09:39:35,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2020-12-23 09:39:35,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1357. [2020-12-23 09:39:35,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1357 states. [2020-12-23 09:39:35,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 1761 transitions. [2020-12-23 09:39:35,816 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 1761 transitions. Word has length 79 [2020-12-23 09:39:35,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:35,817 INFO L481 AbstractCegarLoop]: Abstraction has 1357 states and 1761 transitions. [2020-12-23 09:39:35,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:39:35,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 1761 transitions. [2020-12-23 09:39:35,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-23 09:39:35,819 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:35,819 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, 1, 1, 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 09:39:35,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-23 09:39:35,820 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 09:39:35,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:35,820 INFO L82 PathProgramCache]: Analyzing trace with hash -676572605, now seen corresponding path program 1 times [2020-12-23 09:39:35,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:35,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254051965] [2020-12-23 09:39:35,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:35,859 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 09:39:35,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254051965] [2020-12-23 09:39:35,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:35,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:39:35,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208769036] [2020-12-23 09:39:35,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:39:35,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:35,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:39:35,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:39:35,861 INFO L87 Difference]: Start difference. First operand 1357 states and 1761 transitions. Second operand 3 states. [2020-12-23 09:39:36,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:36,264 INFO L93 Difference]: Finished difference Result 3205 states and 4182 transitions. [2020-12-23 09:39:36,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:39:36,265 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-23 09:39:36,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:36,276 INFO L225 Difference]: With dead ends: 3205 [2020-12-23 09:39:36,277 INFO L226 Difference]: Without dead ends: 2226 [2020-12-23 09:39:36,282 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 09:39:36,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2226 states. [2020-12-23 09:39:36,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2226 to 1359. [2020-12-23 09:39:36,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1359 states. [2020-12-23 09:39:36,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1763 transitions. [2020-12-23 09:39:36,449 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1763 transitions. Word has length 80 [2020-12-23 09:39:36,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:36,450 INFO L481 AbstractCegarLoop]: Abstraction has 1359 states and 1763 transitions. [2020-12-23 09:39:36,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:39:36,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1763 transitions. [2020-12-23 09:39:36,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-23 09:39:36,452 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:36,452 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 09:39:36,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-23 09:39:36,453 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 09:39:36,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:36,453 INFO L82 PathProgramCache]: Analyzing trace with hash 614216993, now seen corresponding path program 1 times [2020-12-23 09:39:36,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:36,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200300015] [2020-12-23 09:39:36,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:36,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:36,582 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 09:39:36,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200300015] [2020-12-23 09:39:36,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:36,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 09:39:36,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901983376] [2020-12-23 09:39:36,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:39:36,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:36,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:39:36,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:39:36,589 INFO L87 Difference]: Start difference. First operand 1359 states and 1763 transitions. Second operand 6 states. [2020-12-23 09:39:37,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:37,009 INFO L93 Difference]: Finished difference Result 2147 states and 2830 transitions. [2020-12-23 09:39:37,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 09:39:37,010 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-12-23 09:39:37,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:37,021 INFO L225 Difference]: With dead ends: 2147 [2020-12-23 09:39:37,022 INFO L226 Difference]: Without dead ends: 2145 [2020-12-23 09:39:37,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-12-23 09:39:37,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2145 states. [2020-12-23 09:39:37,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2145 to 1361. [2020-12-23 09:39:37,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1361 states. [2020-12-23 09:39:37,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1765 transitions. [2020-12-23 09:39:37,251 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1765 transitions. Word has length 81 [2020-12-23 09:39:37,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:37,251 INFO L481 AbstractCegarLoop]: Abstraction has 1361 states and 1765 transitions. [2020-12-23 09:39:37,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:39:37,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1765 transitions. [2020-12-23 09:39:37,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-23 09:39:37,254 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:37,254 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 09:39:37,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-23 09:39:37,255 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 09:39:37,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:37,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1500088230, now seen corresponding path program 1 times [2020-12-23 09:39:37,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:37,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849983802] [2020-12-23 09:39:37,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:37,460 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 09:39:37,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849983802] [2020-12-23 09:39:37,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:37,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 09:39:37,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156067009] [2020-12-23 09:39:37,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:39:37,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:37,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:39:37,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:39:37,466 INFO L87 Difference]: Start difference. First operand 1361 states and 1765 transitions. Second operand 6 states. [2020-12-23 09:39:38,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:38,104 INFO L93 Difference]: Finished difference Result 3233 states and 4335 transitions. [2020-12-23 09:39:38,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 09:39:38,105 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-12-23 09:39:38,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:38,118 INFO L225 Difference]: With dead ends: 3233 [2020-12-23 09:39:38,118 INFO L226 Difference]: Without dead ends: 2414 [2020-12-23 09:39:38,121 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 09:39:38,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2414 states. [2020-12-23 09:39:38,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2414 to 1361. [2020-12-23 09:39:38,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1361 states. [2020-12-23 09:39:38,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1753 transitions. [2020-12-23 09:39:38,305 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1753 transitions. Word has length 81 [2020-12-23 09:39:38,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:38,305 INFO L481 AbstractCegarLoop]: Abstraction has 1361 states and 1753 transitions. [2020-12-23 09:39:38,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:39:38,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1753 transitions. [2020-12-23 09:39:38,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-23 09:39:38,308 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:38,308 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 09:39:38,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-23 09:39:38,308 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 09:39:38,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:38,309 INFO L82 PathProgramCache]: Analyzing trace with hash -659983772, now seen corresponding path program 1 times [2020-12-23 09:39:38,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:38,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553344687] [2020-12-23 09:39:38,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:38,408 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 09:39:38,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553344687] [2020-12-23 09:39:38,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:38,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:39:38,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721807183] [2020-12-23 09:39:38,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:39:38,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:38,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:39:38,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:39:38,411 INFO L87 Difference]: Start difference. First operand 1361 states and 1753 transitions. Second operand 4 states. [2020-12-23 09:39:38,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:38,668 INFO L93 Difference]: Finished difference Result 2709 states and 3522 transitions. [2020-12-23 09:39:38,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:39:38,669 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2020-12-23 09:39:38,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:38,693 INFO L225 Difference]: With dead ends: 2709 [2020-12-23 09:39:38,693 INFO L226 Difference]: Without dead ends: 1424 [2020-12-23 09:39:38,701 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 09:39:38,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2020-12-23 09:39:38,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1061. [2020-12-23 09:39:38,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1061 states. [2020-12-23 09:39:38,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1385 transitions. [2020-12-23 09:39:38,861 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1385 transitions. Word has length 81 [2020-12-23 09:39:38,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:38,861 INFO L481 AbstractCegarLoop]: Abstraction has 1061 states and 1385 transitions. [2020-12-23 09:39:38,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:39:38,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1385 transitions. [2020-12-23 09:39:38,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-23 09:39:38,863 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:38,863 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 09:39:38,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-23 09:39:38,863 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 09:39:38,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:38,864 INFO L82 PathProgramCache]: Analyzing trace with hash -63459148, now seen corresponding path program 1 times [2020-12-23 09:39:38,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:38,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333850925] [2020-12-23 09:39:38,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:38,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:38,909 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 09:39:38,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333850925] [2020-12-23 09:39:38,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:38,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:39:38,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492016921] [2020-12-23 09:39:38,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:39:38,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:38,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:39:38,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:39:38,912 INFO L87 Difference]: Start difference. First operand 1061 states and 1385 transitions. Second operand 3 states. [2020-12-23 09:39:39,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:39,281 INFO L93 Difference]: Finished difference Result 2507 states and 3293 transitions. [2020-12-23 09:39:39,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:39:39,282 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-12-23 09:39:39,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:39,286 INFO L225 Difference]: With dead ends: 2507 [2020-12-23 09:39:39,287 INFO L226 Difference]: Without dead ends: 1596 [2020-12-23 09:39:39,289 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 09:39:39,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2020-12-23 09:39:39,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1067. [2020-12-23 09:39:39,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1067 states. [2020-12-23 09:39:39,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 1391 transitions. [2020-12-23 09:39:39,434 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 1391 transitions. Word has length 82 [2020-12-23 09:39:39,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:39,435 INFO L481 AbstractCegarLoop]: Abstraction has 1067 states and 1391 transitions. [2020-12-23 09:39:39,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:39:39,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 1391 transitions. [2020-12-23 09:39:39,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-23 09:39:39,436 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:39,436 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 09:39:39,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-23 09:39:39,437 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 09:39:39,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:39,437 INFO L82 PathProgramCache]: Analyzing trace with hash -753963456, now seen corresponding path program 1 times [2020-12-23 09:39:39,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:39,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099292686] [2020-12-23 09:39:39,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:39,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:39,564 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 09:39:39,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099292686] [2020-12-23 09:39:39,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:39,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:39:39,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217070940] [2020-12-23 09:39:39,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:39:39,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:39,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:39:39,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:39:39,568 INFO L87 Difference]: Start difference. First operand 1067 states and 1391 transitions. Second operand 4 states. [2020-12-23 09:39:39,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:39,828 INFO L93 Difference]: Finished difference Result 2451 states and 3213 transitions. [2020-12-23 09:39:39,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:39:39,829 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-12-23 09:39:39,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:39,833 INFO L225 Difference]: With dead ends: 2451 [2020-12-23 09:39:39,833 INFO L226 Difference]: Without dead ends: 1484 [2020-12-23 09:39:39,835 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 09:39:39,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2020-12-23 09:39:39,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 1007. [2020-12-23 09:39:39,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1007 states. [2020-12-23 09:39:39,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1309 transitions. [2020-12-23 09:39:39,969 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1309 transitions. Word has length 82 [2020-12-23 09:39:39,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:39,970 INFO L481 AbstractCegarLoop]: Abstraction has 1007 states and 1309 transitions. [2020-12-23 09:39:39,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:39:39,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1309 transitions. [2020-12-23 09:39:39,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-23 09:39:39,971 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:39,971 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 09:39:39,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-23 09:39:39,972 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 09:39:39,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:39,972 INFO L82 PathProgramCache]: Analyzing trace with hash -883855950, now seen corresponding path program 1 times [2020-12-23 09:39:39,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:39,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708769469] [2020-12-23 09:39:39,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:40,166 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 09:39:40,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708769469] [2020-12-23 09:39:40,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:40,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 09:39:40,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802021179] [2020-12-23 09:39:40,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:39:40,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:40,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:39:40,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:39:40,169 INFO L87 Difference]: Start difference. First operand 1007 states and 1309 transitions. Second operand 6 states. [2020-12-23 09:39:40,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:40,876 INFO L93 Difference]: Finished difference Result 3328 states and 4525 transitions. [2020-12-23 09:39:40,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 09:39:40,877 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2020-12-23 09:39:40,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:40,883 INFO L225 Difference]: With dead ends: 3328 [2020-12-23 09:39:40,884 INFO L226 Difference]: Without dead ends: 2520 [2020-12-23 09:39:40,887 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 09:39:40,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2520 states. [2020-12-23 09:39:41,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2520 to 995. [2020-12-23 09:39:41,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-12-23 09:39:41,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1297 transitions. [2020-12-23 09:39:41,037 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1297 transitions. Word has length 84 [2020-12-23 09:39:41,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:41,037 INFO L481 AbstractCegarLoop]: Abstraction has 995 states and 1297 transitions. [2020-12-23 09:39:41,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:39:41,037 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1297 transitions. [2020-12-23 09:39:41,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-23 09:39:41,038 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:41,039 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 09:39:41,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-23 09:39:41,039 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 09:39:41,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:41,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1751255189, now seen corresponding path program 1 times [2020-12-23 09:39:41,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:41,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522029730] [2020-12-23 09:39:41,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:41,196 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 09:39:41,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522029730] [2020-12-23 09:39:41,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:39:41,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 09:39:41,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360668446] [2020-12-23 09:39:41,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:39:41,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:41,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:39:41,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:39:41,199 INFO L87 Difference]: Start difference. First operand 995 states and 1297 transitions. Second operand 6 states. [2020-12-23 09:39:41,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:41,683 INFO L93 Difference]: Finished difference Result 2392 states and 3268 transitions. [2020-12-23 09:39:41,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 09:39:41,684 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-12-23 09:39:41,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:41,688 INFO L225 Difference]: With dead ends: 2392 [2020-12-23 09:39:41,688 INFO L226 Difference]: Without dead ends: 1584 [2020-12-23 09:39:41,691 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 09:39:41,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2020-12-23 09:39:41,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1001. [2020-12-23 09:39:41,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1001 states. [2020-12-23 09:39:41,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1303 transitions. [2020-12-23 09:39:41,850 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1303 transitions. Word has length 85 [2020-12-23 09:39:41,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:41,850 INFO L481 AbstractCegarLoop]: Abstraction has 1001 states and 1303 transitions. [2020-12-23 09:39:41,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:39:41,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1303 transitions. [2020-12-23 09:39:41,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-23 09:39:41,856 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:41,856 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] [2020-12-23 09:39:41,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-23 09:39:41,857 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 09:39:41,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:41,858 INFO L82 PathProgramCache]: Analyzing trace with hash 125687478, now seen corresponding path program 1 times [2020-12-23 09:39:41,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:41,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767448064] [2020-12-23 09:39:41,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:42,154 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 09:39:42,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767448064] [2020-12-23 09:39:42,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249100745] [2020-12-23 09:39:42,158 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 09:39:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:42,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-23 09:39:42,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:39:43,114 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 09:39:43,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 09:39:43,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2020-12-23 09:39:43,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252180117] [2020-12-23 09:39:43,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:39:43,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:43,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:39:43,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-12-23 09:39:43,117 INFO L87 Difference]: Start difference. First operand 1001 states and 1303 transitions. Second operand 6 states. [2020-12-23 09:39:43,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:39:43,669 INFO L93 Difference]: Finished difference Result 2597 states and 3519 transitions. [2020-12-23 09:39:43,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 09:39:43,670 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2020-12-23 09:39:43,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:39:43,675 INFO L225 Difference]: With dead ends: 2597 [2020-12-23 09:39:43,675 INFO L226 Difference]: Without dead ends: 1783 [2020-12-23 09:39:43,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-12-23 09:39:43,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1783 states. [2020-12-23 09:39:43,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1783 to 1001. [2020-12-23 09:39:43,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1001 states. [2020-12-23 09:39:43,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1302 transitions. [2020-12-23 09:39:43,881 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1302 transitions. Word has length 135 [2020-12-23 09:39:43,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:39:43,881 INFO L481 AbstractCegarLoop]: Abstraction has 1001 states and 1302 transitions. [2020-12-23 09:39:43,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:39:43,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1302 transitions. [2020-12-23 09:39:43,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-23 09:39:43,884 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:39:43,885 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, 1] [2020-12-23 09:39:44,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:39:44,101 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 09:39:44,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:39:44,102 INFO L82 PathProgramCache]: Analyzing trace with hash -2123135119, now seen corresponding path program 1 times [2020-12-23 09:39:44,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:39:44,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530700535] [2020-12-23 09:39:44,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:39:44,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:44,315 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 09:39:44,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530700535] [2020-12-23 09:39:44,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219892573] [2020-12-23 09:39:44,315 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 09:39:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:39:44,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-23 09:39:44,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:39:45,177 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 09:39:45,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:39:45,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-12-23 09:39:45,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415852764] [2020-12-23 09:39:45,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 09:39:45,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:39:45,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 09:39:45,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-12-23 09:39:45,180 INFO L87 Difference]: Start difference. First operand 1001 states and 1302 transitions. Second operand 13 states. [2020-12-23 09:40:05,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:05,769 INFO L93 Difference]: Finished difference Result 16835 states and 22485 transitions. [2020-12-23 09:40:05,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2020-12-23 09:40:05,770 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 139 [2020-12-23 09:40:05,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:05,803 INFO L225 Difference]: With dead ends: 16835 [2020-12-23 09:40:05,803 INFO L226 Difference]: Without dead ends: 16027 [2020-12-23 09:40:05,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28995 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=8289, Invalid=55467, Unknown=0, NotChecked=0, Total=63756 [2020-12-23 09:40:05,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16027 states. [2020-12-23 09:40:06,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16027 to 2722. [2020-12-23 09:40:06,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2722 states. [2020-12-23 09:40:06,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2722 states to 2722 states and 3549 transitions. [2020-12-23 09:40:06,526 INFO L78 Accepts]: Start accepts. Automaton has 2722 states and 3549 transitions. Word has length 139 [2020-12-23 09:40:06,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:06,526 INFO L481 AbstractCegarLoop]: Abstraction has 2722 states and 3549 transitions. [2020-12-23 09:40:06,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 09:40:06,526 INFO L276 IsEmpty]: Start isEmpty. Operand 2722 states and 3549 transitions. [2020-12-23 09:40:06,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-12-23 09:40:06,532 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:06,533 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, 1] [2020-12-23 09:40:06,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:40:06,747 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 09:40:06,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:06,749 INFO L82 PathProgramCache]: Analyzing trace with hash -57519925, now seen corresponding path program 1 times [2020-12-23 09:40:06,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:06,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842533087] [2020-12-23 09:40:06,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:07,054 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 09:40:07,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842533087] [2020-12-23 09:40:07,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665643107] [2020-12-23 09:40:07,055 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 09:40:07,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:07,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-23 09:40:07,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:40:07,685 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 09:40:07,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 09:40:07,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 9 [2020-12-23 09:40:07,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420039599] [2020-12-23 09:40:07,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:40:07,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:07,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:40:07,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-23 09:40:07,688 INFO L87 Difference]: Start difference. First operand 2722 states and 3549 transitions. Second operand 6 states. [2020-12-23 09:40:08,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:08,995 INFO L93 Difference]: Finished difference Result 7296 states and 9902 transitions. [2020-12-23 09:40:08,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 09:40:08,996 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2020-12-23 09:40:08,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:09,005 INFO L225 Difference]: With dead ends: 7296 [2020-12-23 09:40:09,005 INFO L226 Difference]: Without dead ends: 4801 [2020-12-23 09:40:09,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 142 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-12-23 09:40:09,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4801 states. [2020-12-23 09:40:09,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4801 to 2379. [2020-12-23 09:40:09,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2379 states. [2020-12-23 09:40:09,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2379 states to 2379 states and 3108 transitions. [2020-12-23 09:40:09,466 INFO L78 Accepts]: Start accepts. Automaton has 2379 states and 3108 transitions. Word has length 140 [2020-12-23 09:40:09,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:09,467 INFO L481 AbstractCegarLoop]: Abstraction has 2379 states and 3108 transitions. [2020-12-23 09:40:09,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:40:09,467 INFO L276 IsEmpty]: Start isEmpty. Operand 2379 states and 3108 transitions. [2020-12-23 09:40:09,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-23 09:40:09,472 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:09,473 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] [2020-12-23 09:40:09,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:40:09,689 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 09:40:09,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:09,690 INFO L82 PathProgramCache]: Analyzing trace with hash -7531545, now seen corresponding path program 1 times [2020-12-23 09:40:09,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:09,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887410526] [2020-12-23 09:40:09,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:09,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:09,874 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 09:40:09,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887410526] [2020-12-23 09:40:09,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:09,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 09:40:09,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927372000] [2020-12-23 09:40:09,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:40:09,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:09,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:40:09,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:40:09,878 INFO L87 Difference]: Start difference. First operand 2379 states and 3108 transitions. Second operand 7 states. [2020-12-23 09:40:12,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:12,731 INFO L93 Difference]: Finished difference Result 14125 states and 18988 transitions. [2020-12-23 09:40:12,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-23 09:40:12,732 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2020-12-23 09:40:12,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:12,750 INFO L225 Difference]: With dead ends: 14125 [2020-12-23 09:40:12,751 INFO L226 Difference]: Without dead ends: 12013 [2020-12-23 09:40:12,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2020-12-23 09:40:12,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12013 states. [2020-12-23 09:40:13,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12013 to 2835. [2020-12-23 09:40:13,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2835 states. [2020-12-23 09:40:13,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 3638 transitions. [2020-12-23 09:40:13,366 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 3638 transitions. Word has length 141 [2020-12-23 09:40:13,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:13,366 INFO L481 AbstractCegarLoop]: Abstraction has 2835 states and 3638 transitions. [2020-12-23 09:40:13,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:40:13,366 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 3638 transitions. [2020-12-23 09:40:13,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-23 09:40:13,372 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:13,373 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] [2020-12-23 09:40:13,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-23 09:40:13,373 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 09:40:13,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:13,374 INFO L82 PathProgramCache]: Analyzing trace with hash -781251252, now seen corresponding path program 1 times [2020-12-23 09:40:13,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:13,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890472718] [2020-12-23 09:40:13,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:13,581 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 09:40:13,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890472718] [2020-12-23 09:40:13,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932591346] [2020-12-23 09:40:13,582 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 09:40:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:13,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-23 09:40:13,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:40:14,247 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 09:40:14,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:40:14,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2020-12-23 09:40:14,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71743073] [2020-12-23 09:40:14,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 09:40:14,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:14,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 09:40:14,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-12-23 09:40:14,249 INFO L87 Difference]: Start difference. First operand 2835 states and 3638 transitions. Second operand 11 states. [2020-12-23 09:40:18,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:18,365 INFO L93 Difference]: Finished difference Result 8090 states and 10560 transitions. [2020-12-23 09:40:18,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-23 09:40:18,365 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 143 [2020-12-23 09:40:18,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:18,373 INFO L225 Difference]: With dead ends: 8090 [2020-12-23 09:40:18,373 INFO L226 Difference]: Without dead ends: 5319 [2020-12-23 09:40:18,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=525, Invalid=1545, Unknown=0, NotChecked=0, Total=2070 [2020-12-23 09:40:18,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5319 states. [2020-12-23 09:40:18,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5319 to 2355. [2020-12-23 09:40:18,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2355 states. [2020-12-23 09:40:18,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 3024 transitions. [2020-12-23 09:40:18,822 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 3024 transitions. Word has length 143 [2020-12-23 09:40:18,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:18,823 INFO L481 AbstractCegarLoop]: Abstraction has 2355 states and 3024 transitions. [2020-12-23 09:40:18,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 09:40:18,823 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 3024 transitions. [2020-12-23 09:40:18,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-23 09:40:18,828 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:18,829 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] [2020-12-23 09:40:19,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:40:19,043 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 09:40:19,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:19,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1655490771, now seen corresponding path program 1 times [2020-12-23 09:40:19,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:19,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334045196] [2020-12-23 09:40:19,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:19,367 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 09:40:19,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334045196] [2020-12-23 09:40:19,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052778149] [2020-12-23 09:40:19,368 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 09:40:19,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:19,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 09:40:19,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:40:19,884 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 09:40:20,307 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 09:40:20,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:40:20,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 15 [2020-12-23 09:40:20,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914688165] [2020-12-23 09:40:20,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-23 09:40:20,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:20,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-23 09:40:20,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-12-23 09:40:20,309 INFO L87 Difference]: Start difference. First operand 2355 states and 3024 transitions. Second operand 16 states. [2020-12-23 09:40:23,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:23,950 INFO L93 Difference]: Finished difference Result 6490 states and 8366 transitions. [2020-12-23 09:40:23,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-23 09:40:23,951 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 143 [2020-12-23 09:40:23,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:23,955 INFO L225 Difference]: With dead ends: 6490 [2020-12-23 09:40:23,955 INFO L226 Difference]: Without dead ends: 4350 [2020-12-23 09:40:23,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 136 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=267, Invalid=1065, Unknown=0, NotChecked=0, Total=1332 [2020-12-23 09:40:23,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4350 states. [2020-12-23 09:40:24,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4350 to 2613. [2020-12-23 09:40:24,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2613 states. [2020-12-23 09:40:24,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 3348 transitions. [2020-12-23 09:40:24,392 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 3348 transitions. Word has length 143 [2020-12-23 09:40:24,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:24,392 INFO L481 AbstractCegarLoop]: Abstraction has 2613 states and 3348 transitions. [2020-12-23 09:40:24,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-23 09:40:24,392 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 3348 transitions. [2020-12-23 09:40:24,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-23 09:40:24,398 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:24,398 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] [2020-12-23 09:40:24,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-12-23 09:40:24,612 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 09:40:24,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:24,613 INFO L82 PathProgramCache]: Analyzing trace with hash 508125803, now seen corresponding path program 1 times [2020-12-23 09:40:24,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:24,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747600288] [2020-12-23 09:40:24,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:24,734 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 09:40:24,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747600288] [2020-12-23 09:40:24,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:24,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:40:24,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509067630] [2020-12-23 09:40:24,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:40:24,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:24,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:40:24,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:40:24,736 INFO L87 Difference]: Start difference. First operand 2613 states and 3348 transitions. Second operand 5 states. [2020-12-23 09:40:25,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:25,221 INFO L93 Difference]: Finished difference Result 4932 states and 6367 transitions. [2020-12-23 09:40:25,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:40:25,222 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-12-23 09:40:25,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:25,225 INFO L225 Difference]: With dead ends: 4932 [2020-12-23 09:40:25,225 INFO L226 Difference]: Without dead ends: 2473 [2020-12-23 09:40:25,228 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 09:40:25,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2020-12-23 09:40:25,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 2473. [2020-12-23 09:40:25,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2473 states. [2020-12-23 09:40:25,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 3171 transitions. [2020-12-23 09:40:25,703 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 3171 transitions. Word has length 143 [2020-12-23 09:40:25,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:25,703 INFO L481 AbstractCegarLoop]: Abstraction has 2473 states and 3171 transitions. [2020-12-23 09:40:25,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:40:25,703 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 3171 transitions. [2020-12-23 09:40:25,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-12-23 09:40:25,712 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:25,712 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] [2020-12-23 09:40:25,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-12-23 09:40:25,713 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 09:40:25,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:25,713 INFO L82 PathProgramCache]: Analyzing trace with hash -529555049, now seen corresponding path program 1 times [2020-12-23 09:40:25,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:25,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254513910] [2020-12-23 09:40:25,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:25,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:26,055 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 09:40:26,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254513910] [2020-12-23 09:40:26,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664756288] [2020-12-23 09:40:26,056 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 09:40:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:26,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-23 09:40:26,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:40:26,572 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 09:40:26,590 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 09:40:27,196 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 09:40:27,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:40:27,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 17 [2020-12-23 09:40:27,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294671623] [2020-12-23 09:40:27,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-23 09:40:27,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:27,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-23 09:40:27,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2020-12-23 09:40:27,199 INFO L87 Difference]: Start difference. First operand 2473 states and 3171 transitions. Second operand 18 states. [2020-12-23 09:40:31,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:31,949 INFO L93 Difference]: Finished difference Result 6774 states and 8708 transitions. [2020-12-23 09:40:31,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-23 09:40:31,951 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 144 [2020-12-23 09:40:31,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:31,956 INFO L225 Difference]: With dead ends: 6774 [2020-12-23 09:40:31,956 INFO L226 Difference]: Without dead ends: 4516 [2020-12-23 09:40:31,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 135 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=401, Invalid=1579, Unknown=0, NotChecked=0, Total=1980 [2020-12-23 09:40:31,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4516 states. [2020-12-23 09:40:32,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4516 to 2756. [2020-12-23 09:40:32,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2756 states. [2020-12-23 09:40:32,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2756 states to 2756 states and 3525 transitions. [2020-12-23 09:40:32,470 INFO L78 Accepts]: Start accepts. Automaton has 2756 states and 3525 transitions. Word has length 144 [2020-12-23 09:40:32,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:32,470 INFO L481 AbstractCegarLoop]: Abstraction has 2756 states and 3525 transitions. [2020-12-23 09:40:32,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-23 09:40:32,470 INFO L276 IsEmpty]: Start isEmpty. Operand 2756 states and 3525 transitions. [2020-12-23 09:40:32,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-12-23 09:40:32,475 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:32,475 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, 1] [2020-12-23 09:40:32,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:40:32,690 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 09:40:32,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:32,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1568139623, now seen corresponding path program 1 times [2020-12-23 09:40:32,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:32,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079587767] [2020-12-23 09:40:32,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:32,766 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 09:40:32,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079587767] [2020-12-23 09:40:32,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:32,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:40:32,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914607353] [2020-12-23 09:40:32,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:40:32,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:32,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:40:32,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:40:32,768 INFO L87 Difference]: Start difference. First operand 2756 states and 3525 transitions. Second operand 4 states. [2020-12-23 09:40:33,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:33,313 INFO L93 Difference]: Finished difference Result 5143 states and 6621 transitions. [2020-12-23 09:40:33,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:40:33,313 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2020-12-23 09:40:33,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:33,316 INFO L225 Difference]: With dead ends: 5143 [2020-12-23 09:40:33,316 INFO L226 Difference]: Without dead ends: 2543 [2020-12-23 09:40:33,318 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 09:40:33,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2543 states. [2020-12-23 09:40:33,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2543 to 2531. [2020-12-23 09:40:33,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2531 states. [2020-12-23 09:40:33,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2531 states to 2531 states and 3225 transitions. [2020-12-23 09:40:33,658 INFO L78 Accepts]: Start accepts. Automaton has 2531 states and 3225 transitions. Word has length 144 [2020-12-23 09:40:33,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:33,659 INFO L481 AbstractCegarLoop]: Abstraction has 2531 states and 3225 transitions. [2020-12-23 09:40:33,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:40:33,659 INFO L276 IsEmpty]: Start isEmpty. Operand 2531 states and 3225 transitions. [2020-12-23 09:40:33,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-12-23 09:40:33,662 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:33,662 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] [2020-12-23 09:40:33,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-12-23 09:40:33,662 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 09:40:33,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:33,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1812744130, now seen corresponding path program 1 times [2020-12-23 09:40:33,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:33,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193316734] [2020-12-23 09:40:33,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:33,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:33,993 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 09:40:33,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193316734] [2020-12-23 09:40:33,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:33,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-23 09:40:33,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489112206] [2020-12-23 09:40:33,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 09:40:33,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:33,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 09:40:33,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-23 09:40:34,000 INFO L87 Difference]: Start difference. First operand 2531 states and 3225 transitions. Second operand 10 states. [2020-12-23 09:40:36,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:36,086 INFO L93 Difference]: Finished difference Result 6662 states and 8560 transitions. [2020-12-23 09:40:36,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-23 09:40:36,087 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 144 [2020-12-23 09:40:36,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:36,091 INFO L225 Difference]: With dead ends: 6662 [2020-12-23 09:40:36,091 INFO L226 Difference]: Without dead ends: 4346 [2020-12-23 09:40:36,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2020-12-23 09:40:36,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4346 states. [2020-12-23 09:40:36,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4346 to 2866. [2020-12-23 09:40:36,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2866 states. [2020-12-23 09:40:36,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 3648 transitions. [2020-12-23 09:40:36,596 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 3648 transitions. Word has length 144 [2020-12-23 09:40:36,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:36,596 INFO L481 AbstractCegarLoop]: Abstraction has 2866 states and 3648 transitions. [2020-12-23 09:40:36,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 09:40:36,596 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 3648 transitions. [2020-12-23 09:40:36,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-12-23 09:40:36,599 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:36,599 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 09:40:36,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-12-23 09:40:36,600 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 09:40:36,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:36,600 INFO L82 PathProgramCache]: Analyzing trace with hash 530571844, now seen corresponding path program 1 times [2020-12-23 09:40:36,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:36,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159187663] [2020-12-23 09:40:36,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:36,729 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 09:40:36,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159187663] [2020-12-23 09:40:36,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:36,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:40:36,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779988626] [2020-12-23 09:40:36,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:40:36,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:36,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:40:36,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:40:36,731 INFO L87 Difference]: Start difference. First operand 2866 states and 3648 transitions. Second operand 5 states. [2020-12-23 09:40:37,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:37,294 INFO L93 Difference]: Finished difference Result 5358 states and 6859 transitions. [2020-12-23 09:40:37,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:40:37,295 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-12-23 09:40:37,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:37,298 INFO L225 Difference]: With dead ends: 5358 [2020-12-23 09:40:37,298 INFO L226 Difference]: Without dead ends: 2649 [2020-12-23 09:40:37,306 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 09:40:37,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2649 states. [2020-12-23 09:40:37,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2649 to 2649. [2020-12-23 09:40:37,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2649 states. [2020-12-23 09:40:37,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2649 states to 2649 states and 3375 transitions. [2020-12-23 09:40:37,708 INFO L78 Accepts]: Start accepts. Automaton has 2649 states and 3375 transitions. Word has length 144 [2020-12-23 09:40:37,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:37,708 INFO L481 AbstractCegarLoop]: Abstraction has 2649 states and 3375 transitions. [2020-12-23 09:40:37,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:40:37,708 INFO L276 IsEmpty]: Start isEmpty. Operand 2649 states and 3375 transitions. [2020-12-23 09:40:37,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-12-23 09:40:37,712 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:37,712 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, 1] [2020-12-23 09:40:37,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-12-23 09:40:37,713 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 09:40:37,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:37,713 INFO L82 PathProgramCache]: Analyzing trace with hash -922037262, now seen corresponding path program 1 times [2020-12-23 09:40:37,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:37,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628161677] [2020-12-23 09:40:37,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:38,003 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 21 [2020-12-23 09:40:38,091 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 09:40:38,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628161677] [2020-12-23 09:40:38,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558805579] [2020-12-23 09:40:38,092 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 09:40:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:38,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 812 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-23 09:40:38,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:40:38,785 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 09:40:39,170 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 09:40:39,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:40:39,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2020-12-23 09:40:39,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213575571] [2020-12-23 09:40:39,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 09:40:39,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:39,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 09:40:39,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-12-23 09:40:39,172 INFO L87 Difference]: Start difference. First operand 2649 states and 3375 transitions. Second operand 11 states. [2020-12-23 09:40:40,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:40,978 INFO L93 Difference]: Finished difference Result 7317 states and 9331 transitions. [2020-12-23 09:40:40,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 09:40:40,979 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 145 [2020-12-23 09:40:40,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:40,984 INFO L225 Difference]: With dead ends: 7317 [2020-12-23 09:40:40,984 INFO L226 Difference]: Without dead ends: 4883 [2020-12-23 09:40:40,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 139 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2020-12-23 09:40:40,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4883 states. [2020-12-23 09:40:41,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4883 to 2660. [2020-12-23 09:40:41,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2660 states. [2020-12-23 09:40:41,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2660 states to 2660 states and 3386 transitions. [2020-12-23 09:40:41,420 INFO L78 Accepts]: Start accepts. Automaton has 2660 states and 3386 transitions. Word has length 145 [2020-12-23 09:40:41,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:41,420 INFO L481 AbstractCegarLoop]: Abstraction has 2660 states and 3386 transitions. [2020-12-23 09:40:41,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 09:40:41,420 INFO L276 IsEmpty]: Start isEmpty. Operand 2660 states and 3386 transitions. [2020-12-23 09:40:41,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-12-23 09:40:41,424 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:41,424 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] [2020-12-23 09:40:41,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:40:41,630 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 09:40:41,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:41,631 INFO L82 PathProgramCache]: Analyzing trace with hash -169521162, now seen corresponding path program 1 times [2020-12-23 09:40:41,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:41,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398443758] [2020-12-23 09:40:41,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:41,882 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 09:40:41,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398443758] [2020-12-23 09:40:41,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425927805] [2020-12-23 09:40:41,883 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 09:40:42,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:42,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-23 09:40:42,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:40:42,720 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 09:40:42,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 09:40:42,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2020-12-23 09:40:42,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926157329] [2020-12-23 09:40:42,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:40:42,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:42,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:40:42,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-12-23 09:40:42,722 INFO L87 Difference]: Start difference. First operand 2660 states and 3386 transitions. Second operand 6 states. [2020-12-23 09:40:44,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:44,098 INFO L93 Difference]: Finished difference Result 8694 states and 11345 transitions. [2020-12-23 09:40:44,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 09:40:44,099 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2020-12-23 09:40:44,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:44,105 INFO L225 Difference]: With dead ends: 8694 [2020-12-23 09:40:44,105 INFO L226 Difference]: Without dead ends: 6209 [2020-12-23 09:40:44,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-12-23 09:40:44,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6209 states. [2020-12-23 09:40:44,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6209 to 2660. [2020-12-23 09:40:44,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2660 states. [2020-12-23 09:40:44,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2660 states to 2660 states and 3384 transitions. [2020-12-23 09:40:44,546 INFO L78 Accepts]: Start accepts. Automaton has 2660 states and 3384 transitions. Word has length 145 [2020-12-23 09:40:44,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:44,546 INFO L481 AbstractCegarLoop]: Abstraction has 2660 states and 3384 transitions. [2020-12-23 09:40:44,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:40:44,546 INFO L276 IsEmpty]: Start isEmpty. Operand 2660 states and 3384 transitions. [2020-12-23 09:40:44,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-12-23 09:40:44,549 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:44,549 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, 1] [2020-12-23 09:40:44,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-12-23 09:40:44,753 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 09:40:44,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:44,754 INFO L82 PathProgramCache]: Analyzing trace with hash -601450378, now seen corresponding path program 1 times [2020-12-23 09:40:44,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:44,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128083492] [2020-12-23 09:40:44,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:44,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:44,918 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 09:40:44,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128083492] [2020-12-23 09:40:44,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737227554] [2020-12-23 09:40:44,919 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 09:40:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:45,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 09:40:45,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:40:45,638 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 09:40:45,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:40:45,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 8 [2020-12-23 09:40:45,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470858972] [2020-12-23 09:40:45,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 09:40:45,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:45,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 09:40:45,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-23 09:40:45,640 INFO L87 Difference]: Start difference. First operand 2660 states and 3384 transitions. Second operand 8 states. [2020-12-23 09:40:47,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:47,533 INFO L93 Difference]: Finished difference Result 10132 states and 12933 transitions. [2020-12-23 09:40:47,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-23 09:40:47,534 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 146 [2020-12-23 09:40:47,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:47,540 INFO L225 Difference]: With dead ends: 10132 [2020-12-23 09:40:47,540 INFO L226 Difference]: Without dead ends: 7687 [2020-12-23 09:40:47,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552 [2020-12-23 09:40:47,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7687 states. [2020-12-23 09:40:48,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7687 to 4027. [2020-12-23 09:40:48,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4027 states. [2020-12-23 09:40:48,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4027 states to 4027 states and 5133 transitions. [2020-12-23 09:40:48,197 INFO L78 Accepts]: Start accepts. Automaton has 4027 states and 5133 transitions. Word has length 146 [2020-12-23 09:40:48,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:48,197 INFO L481 AbstractCegarLoop]: Abstraction has 4027 states and 5133 transitions. [2020-12-23 09:40:48,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 09:40:48,197 INFO L276 IsEmpty]: Start isEmpty. Operand 4027 states and 5133 transitions. [2020-12-23 09:40:48,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-12-23 09:40:48,202 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:48,202 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, 1] [2020-12-23 09:40:48,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:40:48,404 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 09:40:48,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:48,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1640034952, now seen corresponding path program 1 times [2020-12-23 09:40:48,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:48,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568152044] [2020-12-23 09:40:48,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:48,481 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 09:40:48,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568152044] [2020-12-23 09:40:48,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:48,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:40:48,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003644356] [2020-12-23 09:40:48,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:40:48,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:48,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:40:48,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:40:48,483 INFO L87 Difference]: Start difference. First operand 4027 states and 5133 transitions. Second operand 4 states. [2020-12-23 09:40:49,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:49,161 INFO L93 Difference]: Finished difference Result 7031 states and 9042 transitions. [2020-12-23 09:40:49,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:40:49,162 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-12-23 09:40:49,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:49,165 INFO L225 Difference]: With dead ends: 7031 [2020-12-23 09:40:49,165 INFO L226 Difference]: Without dead ends: 3219 [2020-12-23 09:40:49,168 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 09:40:49,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2020-12-23 09:40:49,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3200. [2020-12-23 09:40:49,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3200 states. [2020-12-23 09:40:49,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 4077 transitions. [2020-12-23 09:40:49,670 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 4077 transitions. Word has length 146 [2020-12-23 09:40:49,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:49,670 INFO L481 AbstractCegarLoop]: Abstraction has 3200 states and 4077 transitions. [2020-12-23 09:40:49,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:40:49,670 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 4077 transitions. [2020-12-23 09:40:49,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-23 09:40:49,673 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:49,674 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, 1] [2020-12-23 09:40:49,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-12-23 09:40:49,674 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 09:40:49,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:49,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1772878816, now seen corresponding path program 1 times [2020-12-23 09:40:49,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:49,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033008913] [2020-12-23 09:40:49,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:49,917 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 09:40:49,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033008913] [2020-12-23 09:40:49,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646836450] [2020-12-23 09:40:49,918 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 09:40:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:50,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-23 09:40:50,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:40:50,807 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 09:40:50,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:40:50,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2020-12-23 09:40:50,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521263880] [2020-12-23 09:40:50,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 09:40:50,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:50,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 09:40:50,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-12-23 09:40:50,810 INFO L87 Difference]: Start difference. First operand 3200 states and 4077 transitions. Second operand 15 states. [2020-12-23 09:40:51,379 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2020-12-23 09:41:09,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:41:09,140 INFO L93 Difference]: Finished difference Result 18991 states and 24565 transitions. [2020-12-23 09:41:09,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2020-12-23 09:41:09,141 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 148 [2020-12-23 09:41:09,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:41:09,157 INFO L225 Difference]: With dead ends: 18991 [2020-12-23 09:41:09,157 INFO L226 Difference]: Without dead ends: 16006 [2020-12-23 09:41:09,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12818 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=4607, Invalid=26899, Unknown=0, NotChecked=0, Total=31506 [2020-12-23 09:41:09,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16006 states. [2020-12-23 09:41:09,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16006 to 3079. [2020-12-23 09:41:09,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3079 states. [2020-12-23 09:41:09,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3079 states to 3079 states and 3868 transitions. [2020-12-23 09:41:09,832 INFO L78 Accepts]: Start accepts. Automaton has 3079 states and 3868 transitions. Word has length 148 [2020-12-23 09:41:09,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:41:09,833 INFO L481 AbstractCegarLoop]: Abstraction has 3079 states and 3868 transitions. [2020-12-23 09:41:09,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 09:41:09,833 INFO L276 IsEmpty]: Start isEmpty. Operand 3079 states and 3868 transitions. [2020-12-23 09:41:09,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-12-23 09:41:09,835 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:41:09,835 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, 1] [2020-12-23 09:41:10,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:41:10,037 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 09:41:10,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:41:10,038 INFO L82 PathProgramCache]: Analyzing trace with hash -2043778853, now seen corresponding path program 1 times [2020-12-23 09:41:10,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:41:10,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116443044] [2020-12-23 09:41:10,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:41:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:10,231 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 09:41:10,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116443044] [2020-12-23 09:41:10,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:41:10,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 09:41:10,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750092984] [2020-12-23 09:41:10,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:41:10,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:41:10,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:41:10,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:41:10,234 INFO L87 Difference]: Start difference. First operand 3079 states and 3868 transitions. Second operand 6 states. [2020-12-23 09:41:12,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:41:12,216 INFO L93 Difference]: Finished difference Result 10425 states and 13425 transitions. [2020-12-23 09:41:12,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 09:41:12,217 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2020-12-23 09:41:12,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:41:12,224 INFO L225 Difference]: With dead ends: 10425 [2020-12-23 09:41:12,224 INFO L226 Difference]: Without dead ends: 7629 [2020-12-23 09:41:12,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-23 09:41:12,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7629 states. [2020-12-23 09:41:12,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7629 to 3160. [2020-12-23 09:41:12,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3160 states. [2020-12-23 09:41:12,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3160 states to 3160 states and 3964 transitions. [2020-12-23 09:41:12,842 INFO L78 Accepts]: Start accepts. Automaton has 3160 states and 3964 transitions. Word has length 150 [2020-12-23 09:41:12,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:41:12,843 INFO L481 AbstractCegarLoop]: Abstraction has 3160 states and 3964 transitions. [2020-12-23 09:41:12,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:41:12,843 INFO L276 IsEmpty]: Start isEmpty. Operand 3160 states and 3964 transitions. [2020-12-23 09:41:12,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-23 09:41:12,845 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:41:12,845 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, 1] [2020-12-23 09:41:12,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-12-23 09:41:12,846 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 09:41:12,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:41:12,846 INFO L82 PathProgramCache]: Analyzing trace with hash -253041123, now seen corresponding path program 1 times [2020-12-23 09:41:12,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:41:12,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868130411] [2020-12-23 09:41:12,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:41:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:13,084 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 09:41:13,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868130411] [2020-12-23 09:41:13,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96454561] [2020-12-23 09:41:13,085 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 09:41:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:13,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-23 09:41:13,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:41:13,998 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 09:41:13,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:41:13,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 8 [2020-12-23 09:41:13,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214549986] [2020-12-23 09:41:13,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 09:41:13,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:41:14,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 09:41:14,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-23 09:41:14,000 INFO L87 Difference]: Start difference. First operand 3160 states and 3964 transitions. Second operand 8 states. [2020-12-23 09:41:16,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:41:16,265 INFO L93 Difference]: Finished difference Result 9297 states and 11932 transitions. [2020-12-23 09:41:16,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-23 09:41:16,266 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 151 [2020-12-23 09:41:16,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:41:16,272 INFO L225 Difference]: With dead ends: 9297 [2020-12-23 09:41:16,272 INFO L226 Difference]: Without dead ends: 6420 [2020-12-23 09:41:16,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 155 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-12-23 09:41:16,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6420 states. [2020-12-23 09:41:16,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6420 to 3160. [2020-12-23 09:41:16,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3160 states. [2020-12-23 09:41:16,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3160 states to 3160 states and 3936 transitions. [2020-12-23 09:41:16,897 INFO L78 Accepts]: Start accepts. Automaton has 3160 states and 3936 transitions. Word has length 151 [2020-12-23 09:41:16,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:41:16,897 INFO L481 AbstractCegarLoop]: Abstraction has 3160 states and 3936 transitions. [2020-12-23 09:41:16,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 09:41:16,897 INFO L276 IsEmpty]: Start isEmpty. Operand 3160 states and 3936 transitions. [2020-12-23 09:41:16,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-23 09:41:16,900 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:41:16,900 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 09:41:17,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-12-23 09:41:17,101 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 09:41:17,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:41:17,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1045963189, now seen corresponding path program 1 times [2020-12-23 09:41:17,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:41:17,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656770706] [2020-12-23 09:41:17,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:41:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:17,215 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 09:41:17,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656770706] [2020-12-23 09:41:17,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:41:17,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 09:41:17,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746741389] [2020-12-23 09:41:17,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:41:17,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:41:17,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:41:17,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:41:17,217 INFO L87 Difference]: Start difference. First operand 3160 states and 3936 transitions. Second operand 6 states. [2020-12-23 09:41:20,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:41:20,366 INFO L93 Difference]: Finished difference Result 14633 states and 18742 transitions. [2020-12-23 09:41:20,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 09:41:20,367 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2020-12-23 09:41:20,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:41:20,379 INFO L225 Difference]: With dead ends: 14633 [2020-12-23 09:41:20,380 INFO L226 Difference]: Without dead ends: 11756 [2020-12-23 09:41:20,384 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 09:41:20,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11756 states. [2020-12-23 09:41:21,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11756 to 3629. [2020-12-23 09:41:21,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3629 states. [2020-12-23 09:41:21,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3629 states to 3629 states and 4471 transitions. [2020-12-23 09:41:21,144 INFO L78 Accepts]: Start accepts. Automaton has 3629 states and 4471 transitions. Word has length 151 [2020-12-23 09:41:21,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:41:21,144 INFO L481 AbstractCegarLoop]: Abstraction has 3629 states and 4471 transitions. [2020-12-23 09:41:21,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:41:21,144 INFO L276 IsEmpty]: Start isEmpty. Operand 3629 states and 4471 transitions. [2020-12-23 09:41:21,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-12-23 09:41:21,147 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:41:21,147 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 09:41:21,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-12-23 09:41:21,148 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 09:41:21,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:41:21,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1858726963, now seen corresponding path program 1 times [2020-12-23 09:41:21,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:41:21,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088863353] [2020-12-23 09:41:21,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:41:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:21,234 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 09:41:21,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088863353] [2020-12-23 09:41:21,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:41:21,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:41:21,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874503733] [2020-12-23 09:41:21,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:41:21,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:41:21,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:41:21,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:41:21,236 INFO L87 Difference]: Start difference. First operand 3629 states and 4471 transitions. Second operand 4 states. [2020-12-23 09:41:22,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:41:22,452 INFO L93 Difference]: Finished difference Result 8795 states and 10977 transitions. [2020-12-23 09:41:22,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:41:22,453 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-12-23 09:41:22,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:41:22,457 INFO L225 Difference]: With dead ends: 8795 [2020-12-23 09:41:22,457 INFO L226 Difference]: Without dead ends: 5449 [2020-12-23 09:41:22,461 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 09:41:22,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5449 states. [2020-12-23 09:41:23,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5449 to 4333. [2020-12-23 09:41:23,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4333 states. [2020-12-23 09:41:23,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4333 states to 4333 states and 5328 transitions. [2020-12-23 09:41:23,246 INFO L78 Accepts]: Start accepts. Automaton has 4333 states and 5328 transitions. Word has length 152 [2020-12-23 09:41:23,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:41:23,246 INFO L481 AbstractCegarLoop]: Abstraction has 4333 states and 5328 transitions. [2020-12-23 09:41:23,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:41:23,246 INFO L276 IsEmpty]: Start isEmpty. Operand 4333 states and 5328 transitions. [2020-12-23 09:41:23,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-12-23 09:41:23,250 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:41:23,250 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] [2020-12-23 09:41:23,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-12-23 09:41:23,250 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 09:41:23,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:41:23,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1020898076, now seen corresponding path program 1 times [2020-12-23 09:41:23,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:41:23,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115749008] [2020-12-23 09:41:23,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:41:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:23,413 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 09:41:23,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115749008] [2020-12-23 09:41:23,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469352192] [2020-12-23 09:41:23,414 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 09:41:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:23,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 09:41:23,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:41:24,245 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 09:41:24,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:41:24,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-12-23 09:41:24,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466474148] [2020-12-23 09:41:24,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:41:24,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:41:24,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:41:24,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:41:24,247 INFO L87 Difference]: Start difference. First operand 4333 states and 5328 transitions. Second operand 7 states. [2020-12-23 09:41:26,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:41:26,869 INFO L93 Difference]: Finished difference Result 15157 states and 19174 transitions. [2020-12-23 09:41:26,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-23 09:41:26,869 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2020-12-23 09:41:26,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:41:26,878 INFO L225 Difference]: With dead ends: 15157 [2020-12-23 09:41:26,878 INFO L226 Difference]: Without dead ends: 11107 [2020-12-23 09:41:26,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-12-23 09:41:26,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11107 states. [2020-12-23 09:41:28,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11107 to 6813. [2020-12-23 09:41:28,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6813 states. [2020-12-23 09:41:28,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6813 states to 6813 states and 8405 transitions. [2020-12-23 09:41:28,249 INFO L78 Accepts]: Start accepts. Automaton has 6813 states and 8405 transitions. Word has length 152 [2020-12-23 09:41:28,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:41:28,249 INFO L481 AbstractCegarLoop]: Abstraction has 6813 states and 8405 transitions. [2020-12-23 09:41:28,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:41:28,249 INFO L276 IsEmpty]: Start isEmpty. Operand 6813 states and 8405 transitions. [2020-12-23 09:41:28,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-12-23 09:41:28,253 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:41:28,253 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, 1] [2020-12-23 09:41:28,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-12-23 09:41:28,461 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 09:41:28,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:41:28,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1980669719, now seen corresponding path program 1 times [2020-12-23 09:41:28,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:41:28,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320540200] [2020-12-23 09:41:28,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:41:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:28,694 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 26 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:41:28,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320540200] [2020-12-23 09:41:28,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407369135] [2020-12-23 09:41:28,694 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 09:41:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:29,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-23 09:41:29,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:41:29,558 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 09:41:29,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:41:29,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2020-12-23 09:41:29,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835312086] [2020-12-23 09:41:29,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-23 09:41:29,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:41:29,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-23 09:41:29,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-12-23 09:41:29,560 INFO L87 Difference]: Start difference. First operand 6813 states and 8405 transitions. Second operand 14 states. [2020-12-23 09:42:00,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:42:00,055 INFO L93 Difference]: Finished difference Result 35900 states and 45200 transitions. [2020-12-23 09:42:00,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 314 states. [2020-12-23 09:42:00,055 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 152 [2020-12-23 09:42:00,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:42:00,084 INFO L225 Difference]: With dead ends: 35900 [2020-12-23 09:42:00,084 INFO L226 Difference]: Without dead ends: 30532 [2020-12-23 09:42:00,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 323 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49817 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=12787, Invalid=92513, Unknown=0, NotChecked=0, Total=105300 [2020-12-23 09:42:00,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30532 states. [2020-12-23 09:42:02,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30532 to 10396. [2020-12-23 09:42:02,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10396 states. [2020-12-23 09:42:02,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10396 states to 10396 states and 12835 transitions. [2020-12-23 09:42:02,615 INFO L78 Accepts]: Start accepts. Automaton has 10396 states and 12835 transitions. Word has length 152 [2020-12-23 09:42:02,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:42:02,616 INFO L481 AbstractCegarLoop]: Abstraction has 10396 states and 12835 transitions. [2020-12-23 09:42:02,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-23 09:42:02,616 INFO L276 IsEmpty]: Start isEmpty. Operand 10396 states and 12835 transitions. [2020-12-23 09:42:02,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-23 09:42:02,623 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:42:02,623 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, 1] [2020-12-23 09:42:02,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2020-12-23 09:42:02,825 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 09:42:02,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:42:02,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1169656938, now seen corresponding path program 1 times [2020-12-23 09:42:02,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:42:02,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413948772] [2020-12-23 09:42:02,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:42:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:03,120 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 14 [2020-12-23 09:42:03,206 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 09:42:03,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413948772] [2020-12-23 09:42:03,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973966603] [2020-12-23 09:42:03,207 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 09:42:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:03,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 831 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-23 09:42:03,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:42:03,826 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: variable got div captured [2020-12-23 09:42:03,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 09:42:03,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 09:42:03,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029449974] [2020-12-23 09:42:03,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 09:42:03,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:42:03,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 09:42:03,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 09:42:03,829 INFO L87 Difference]: Start difference. First operand 10396 states and 12835 transitions. Second operand 8 states. [2020-12-23 09:42:07,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:42:07,867 INFO L93 Difference]: Finished difference Result 20058 states and 25059 transitions. [2020-12-23 09:42:07,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 09:42:07,868 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 153 [2020-12-23 09:42:07,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:42:07,879 INFO L225 Difference]: With dead ends: 20058 [2020-12-23 09:42:07,879 INFO L226 Difference]: Without dead ends: 12775 [2020-12-23 09:42:07,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2020-12-23 09:42:07,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12775 states. [2020-12-23 09:42:10,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12775 to 10157. [2020-12-23 09:42:10,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10157 states. [2020-12-23 09:42:10,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10157 states to 10157 states and 12521 transitions. [2020-12-23 09:42:10,215 INFO L78 Accepts]: Start accepts. Automaton has 10157 states and 12521 transitions. Word has length 153 [2020-12-23 09:42:10,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:42:10,216 INFO L481 AbstractCegarLoop]: Abstraction has 10157 states and 12521 transitions. [2020-12-23 09:42:10,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 09:42:10,216 INFO L276 IsEmpty]: Start isEmpty. Operand 10157 states and 12521 transitions. [2020-12-23 09:42:10,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-23 09:42:10,222 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:42:10,222 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:42:10,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:42:10,426 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 09:42:10,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:42:10,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1055536007, now seen corresponding path program 1 times [2020-12-23 09:42:10,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:42:10,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011894021] [2020-12-23 09:42:10,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:42:10,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:10,493 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-12-23 09:42:10,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011894021] [2020-12-23 09:42:10,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:42:10,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:42:10,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873549620] [2020-12-23 09:42:10,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:42:10,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:42:10,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:42:10,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:42:10,495 INFO L87 Difference]: Start difference. First operand 10157 states and 12521 transitions. Second operand 4 states. [2020-12-23 09:42:12,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:42:12,089 INFO L93 Difference]: Finished difference Result 16206 states and 19983 transitions. [2020-12-23 09:42:12,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:42:12,090 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-12-23 09:42:12,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:42:12,097 INFO L225 Difference]: With dead ends: 16206 [2020-12-23 09:42:12,097 INFO L226 Difference]: Without dead ends: 6652 [2020-12-23 09:42:12,101 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 09:42:12,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6652 states. [2020-12-23 09:42:13,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6652 to 6632. [2020-12-23 09:42:13,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6632 states. [2020-12-23 09:42:13,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6632 states to 6632 states and 8106 transitions. [2020-12-23 09:42:13,576 INFO L78 Accepts]: Start accepts. Automaton has 6632 states and 8106 transitions. Word has length 154 [2020-12-23 09:42:13,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:42:13,577 INFO L481 AbstractCegarLoop]: Abstraction has 6632 states and 8106 transitions. [2020-12-23 09:42:13,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:42:13,577 INFO L276 IsEmpty]: Start isEmpty. Operand 6632 states and 8106 transitions. [2020-12-23 09:42:13,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-12-23 09:42:13,580 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:42:13,580 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, 1] [2020-12-23 09:42:13,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-12-23 09:42:13,581 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 09:42:13,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:42:13,581 INFO L82 PathProgramCache]: Analyzing trace with hash 797904600, now seen corresponding path program 1 times [2020-12-23 09:42:13,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:42:13,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959696960] [2020-12-23 09:42:13,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:42:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:13,818 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 09:42:13,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959696960] [2020-12-23 09:42:13,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764426945] [2020-12-23 09:42:13,819 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 09:42:14,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:14,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 839 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-23 09:42:14,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:42:14,694 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 09:42:14,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:42:14,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2020-12-23 09:42:14,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401943560] [2020-12-23 09:42:14,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 09:42:14,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:42:14,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 09:42:14,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-12-23 09:42:14,695 INFO L87 Difference]: Start difference. First operand 6632 states and 8106 transitions. Second operand 13 states. [2020-12-23 09:42:33,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:42:33,351 INFO L93 Difference]: Finished difference Result 39114 states and 49435 transitions. [2020-12-23 09:42:33,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2020-12-23 09:42:33,353 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 155 [2020-12-23 09:42:33,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:42:33,382 INFO L225 Difference]: With dead ends: 39114 [2020-12-23 09:42:33,382 INFO L226 Difference]: Without dead ends: 34071 [2020-12-23 09:42:33,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7816 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=2820, Invalid=16640, Unknown=0, NotChecked=0, Total=19460 [2020-12-23 09:42:33,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34071 states. [2020-12-23 09:42:35,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34071 to 8003. [2020-12-23 09:42:35,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8003 states. [2020-12-23 09:42:35,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8003 states to 8003 states and 9789 transitions. [2020-12-23 09:42:35,633 INFO L78 Accepts]: Start accepts. Automaton has 8003 states and 9789 transitions. Word has length 155 [2020-12-23 09:42:35,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:42:35,633 INFO L481 AbstractCegarLoop]: Abstraction has 8003 states and 9789 transitions. [2020-12-23 09:42:35,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 09:42:35,633 INFO L276 IsEmpty]: Start isEmpty. Operand 8003 states and 9789 transitions. [2020-12-23 09:42:35,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-12-23 09:42:35,635 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:42:35,636 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, 1, 1] [2020-12-23 09:42:35,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2020-12-23 09:42:35,837 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 09:42:35,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:42:35,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1281941302, now seen corresponding path program 1 times [2020-12-23 09:42:35,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:42:35,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860813703] [2020-12-23 09:42:35,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:42:35,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:36,212 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 09:42:36,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860813703] [2020-12-23 09:42:36,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339799225] [2020-12-23 09:42:36,213 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 09:42:36,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:36,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-23 09:42:36,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:42:37,268 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 09:42:37,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:42:37,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 16 [2020-12-23 09:42:37,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882048768] [2020-12-23 09:42:37,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-23 09:42:37,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:42:37,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-23 09:42:37,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-12-23 09:42:37,270 INFO L87 Difference]: Start difference. First operand 8003 states and 9789 transitions. Second operand 16 states. [2020-12-23 09:42:38,429 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2020-12-23 09:42:42,497 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2020-12-23 09:42:42,753 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2020-12-23 09:42:54,856 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2020-12-23 09:42:55,402 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2020-12-23 09:42:58,912 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2020-12-23 09:43:02,108 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-12-23 09:43:02,431 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2020-12-23 09:43:05,573 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2020-12-23 09:43:05,923 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2020-12-23 09:43:06,594 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2020-12-23 09:43:06,988 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2020-12-23 09:43:13,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:43:13,772 INFO L93 Difference]: Finished difference Result 33360 states and 41748 transitions. [2020-12-23 09:43:13,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2020-12-23 09:43:13,773 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 155 [2020-12-23 09:43:13,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:43:13,798 INFO L225 Difference]: With dead ends: 33360 [2020-12-23 09:43:13,798 INFO L226 Difference]: Without dead ends: 27240 [2020-12-23 09:43:13,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19727 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=6585, Invalid=42035, Unknown=0, NotChecked=0, Total=48620 [2020-12-23 09:43:13,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27240 states. [2020-12-23 09:43:16,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27240 to 7969. [2020-12-23 09:43:16,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7969 states. [2020-12-23 09:43:16,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7969 states to 7969 states and 9701 transitions. [2020-12-23 09:43:16,053 INFO L78 Accepts]: Start accepts. Automaton has 7969 states and 9701 transitions. Word has length 155 [2020-12-23 09:43:16,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:43:16,054 INFO L481 AbstractCegarLoop]: Abstraction has 7969 states and 9701 transitions. [2020-12-23 09:43:16,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-23 09:43:16,054 INFO L276 IsEmpty]: Start isEmpty. Operand 7969 states and 9701 transitions. [2020-12-23 09:43:16,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-12-23 09:43:16,056 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:43:16,056 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, 1, 1] [2020-12-23 09:43:16,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:43:16,258 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 09:43:16,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:43:16,258 INFO L82 PathProgramCache]: Analyzing trace with hash -2117913928, now seen corresponding path program 1 times [2020-12-23 09:43:16,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:43:16,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368871698] [2020-12-23 09:43:16,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:43:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:43:16,513 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 09:43:16,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368871698] [2020-12-23 09:43:16,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977985279] [2020-12-23 09:43:16,513 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 09:43:17,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:43:17,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-23 09:43:17,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:43:17,548 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 09:43:17,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:43:17,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 8 [2020-12-23 09:43:17,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652208678] [2020-12-23 09:43:17,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 09:43:17,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:43:17,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 09:43:17,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-23 09:43:17,551 INFO L87 Difference]: Start difference. First operand 7969 states and 9701 transitions. Second operand 8 states.