/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/systemc/token_ring.06.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 09:32:17,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 09:32:17,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 09:32:17,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 09:32:17,780 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 09:32:17,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 09:32:17,783 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 09:32:17,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 09:32:17,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 09:32:17,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 09:32:17,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 09:32:17,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 09:32:17,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 09:32:17,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 09:32:17,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 09:32:17,798 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 09:32:17,799 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 09:32:17,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 09:32:17,804 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 09:32:17,806 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 09:32:17,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 09:32:17,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 09:32:17,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 09:32:17,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 09:32:17,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 09:32:17,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 09:32:17,836 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 09:32:17,838 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 09:32:17,840 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 09:32:17,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 09:32:17,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 09:32:17,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 09:32:17,850 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 09:32:17,851 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 09:32:17,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 09:32:17,853 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 09:32:17,854 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 09:32:17,854 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 09:32:17,855 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 09:32:17,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 09:32:17,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 09:32:17,866 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 09:32:17,912 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 09:32:17,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 09:32:17,913 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 09:32:17,914 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 09:32:17,914 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 09:32:17,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 09:32:17,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 09:32:17,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 09:32:17,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 09:32:17,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 09:32:17,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 09:32:17,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 09:32:17,916 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 09:32:17,916 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 09:32:17,916 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 09:32:17,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 09:32:17,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 09:32:17,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 09:32:17,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 09:32:17,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 09:32:17,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 09:32:17,918 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 09:32:17,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 09:32:17,918 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 09:32:17,918 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 09:32:17,919 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 09:32:18,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 09:32:18,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 09:32:18,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 09:32:18,353 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 09:32:18,354 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 09:32:18,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.06.cil-1.c [2020-12-23 09:32:18,455 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e99721f7a/2cb9a6efe34d4ee7be19418695eae1d7/FLAG454cc1b08 [2020-12-23 09:32:19,269 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 09:32:19,270 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.06.cil-1.c [2020-12-23 09:32:19,283 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e99721f7a/2cb9a6efe34d4ee7be19418695eae1d7/FLAG454cc1b08 [2020-12-23 09:32:19,571 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e99721f7a/2cb9a6efe34d4ee7be19418695eae1d7 [2020-12-23 09:32:19,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 09:32:19,580 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 09:32:19,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 09:32:19,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 09:32:19,591 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 09:32:19,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:32:19" (1/1) ... [2020-12-23 09:32:19,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a8f5c08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:19, skipping insertion in model container [2020-12-23 09:32:19,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:32:19" (1/1) ... [2020-12-23 09:32:19,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 09:32:19,667 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 09:32:19,815 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/systemc/token_ring.06.cil-1.c[366,379] left hand side expression in assignment: lhs: VariableLHS[~token~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~local~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t1_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t2_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t3_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t3_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t4_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t4_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t5_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t5_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t6_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t6_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_M~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_M~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__retres1~0,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~0,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~1,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~1,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~2,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~2,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~3,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~3,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~4,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~4,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~5,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~5,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~6,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~6,] left hand side expression in assignment: lhs: VariableLHS[~m_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t3_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t3_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t4_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t4_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t5_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t5_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t6_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t6_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__retres1~7,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~7,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~7,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~7,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~7,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~7,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~7,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~7,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp_ndt_1~0,] left hand side expression in assignment: lhs: VariableLHS[~m_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp_ndt_2~0,] left hand side expression in assignment: lhs: VariableLHS[~t1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp_ndt_3~0,] left hand side expression in assignment: lhs: VariableLHS[~t2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp_ndt_4~0,] left hand side expression in assignment: lhs: VariableLHS[~t3_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp_ndt_5~0,] left hand side expression in assignment: lhs: VariableLHS[~t4_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp_ndt_6~0,] left hand side expression in assignment: lhs: VariableLHS[~t5_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp_ndt_7~0,] left hand side expression in assignment: lhs: VariableLHS[~t6_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~M_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T1_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T2_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T3_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T4_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T5_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T6_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_M~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~M_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T1_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T2_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T3_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T4_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T5_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T6_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_M~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~m_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~t1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~t2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~t3_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~t4_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~t5_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~t6_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~M_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~M_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T1_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T2_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T3_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T4_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T5_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T6_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_M~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t1_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t2_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t3_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t4_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t5_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t6_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~__retres2~0,] left hand side expression in assignment: lhs: VariableLHS[~__retres2~0,] left hand side expression in assignment: lhs: VariableLHS[~kernel_st~0,] left hand side expression in assignment: lhs: VariableLHS[~kernel_st~0,] left hand side expression in assignment: lhs: VariableLHS[~kernel_st~0,] left hand side expression in assignment: lhs: VariableLHS[~kernel_st~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~3,] left hand side expression in assignment: lhs: VariableLHS[~kernel_st~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~1,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] [2020-12-23 09:32:19,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:32:19,939 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 09:32:19,953 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/systemc/token_ring.06.cil-1.c[366,379] left hand side expression in assignment: lhs: VariableLHS[~token~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~local~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t1_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t2_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t3_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t3_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t4_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t4_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t5_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t5_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t6_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t6_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_M~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_M~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__retres1~0,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~0,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~1,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~1,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~2,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~2,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~3,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~3,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~4,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~4,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~5,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~5,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~6,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~6,] left hand side expression in assignment: lhs: VariableLHS[~m_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t3_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t3_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t4_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t4_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t5_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t5_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t6_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t6_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__retres1~7,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~7,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~7,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~7,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~7,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~7,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~7,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~7,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp_ndt_1~0,] left hand side expression in assignment: lhs: VariableLHS[~m_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp_ndt_2~0,] left hand side expression in assignment: lhs: VariableLHS[~t1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp_ndt_3~0,] left hand side expression in assignment: lhs: VariableLHS[~t2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp_ndt_4~0,] left hand side expression in assignment: lhs: VariableLHS[~t3_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp_ndt_5~0,] left hand side expression in assignment: lhs: VariableLHS[~t4_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp_ndt_6~0,] left hand side expression in assignment: lhs: VariableLHS[~t5_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp_ndt_7~0,] left hand side expression in assignment: lhs: VariableLHS[~t6_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~M_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T1_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T2_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T3_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T4_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T5_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T6_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_M~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~M_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T1_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T2_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T3_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T4_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T5_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T6_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_M~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~m_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~t1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~t2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~t3_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~t4_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~t5_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~t6_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~M_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~M_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T1_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T2_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T3_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T4_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T5_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T6_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_M~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t1_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t2_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t3_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t4_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t5_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t6_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~__retres2~0,] left hand side expression in assignment: lhs: VariableLHS[~__retres2~0,] left hand side expression in assignment: lhs: VariableLHS[~kernel_st~0,] left hand side expression in assignment: lhs: VariableLHS[~kernel_st~0,] left hand side expression in assignment: lhs: VariableLHS[~kernel_st~0,] left hand side expression in assignment: lhs: VariableLHS[~kernel_st~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~3,] left hand side expression in assignment: lhs: VariableLHS[~kernel_st~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~1,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] [2020-12-23 09:32:20,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:32:20,060 INFO L208 MainTranslator]: Completed translation [2020-12-23 09:32:20,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:20 WrapperNode [2020-12-23 09:32:20,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 09:32:20,062 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 09:32:20,062 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 09:32:20,063 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 09:32:20,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:20" (1/1) ... [2020-12-23 09:32:20,086 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:20" (1/1) ... [2020-12-23 09:32:20,202 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 09:32:20,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 09:32:20,205 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 09:32:20,205 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 09:32:20,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:20" (1/1) ... [2020-12-23 09:32:20,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:20" (1/1) ... [2020-12-23 09:32:20,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:20" (1/1) ... [2020-12-23 09:32:20,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:20" (1/1) ... [2020-12-23 09:32:20,282 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:20" (1/1) ... [2020-12-23 09:32:20,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:20" (1/1) ... [2020-12-23 09:32:20,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:20" (1/1) ... [2020-12-23 09:32:20,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 09:32:20,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 09:32:20,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 09:32:20,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 09:32:20,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 09:32:20,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 09:32:20,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 09:32:20,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 09:32:20,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 09:32:22,143 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 09:32:22,143 INFO L299 CfgBuilder]: Removed 237 assume(true) statements. [2020-12-23 09:32:22,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:32:22 BoogieIcfgContainer [2020-12-23 09:32:22,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 09:32:22,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 09:32:22,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 09:32:22,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 09:32:22,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 09:32:19" (1/3) ... [2020-12-23 09:32:22,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e9a87b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:32:22, skipping insertion in model container [2020-12-23 09:32:22,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:20" (2/3) ... [2020-12-23 09:32:22,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e9a87b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:32:22, skipping insertion in model container [2020-12-23 09:32:22,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:32:22" (3/3) ... [2020-12-23 09:32:22,170 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.06.cil-1.c [2020-12-23 09:32:22,177 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 09:32:22,184 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-23 09:32:22,210 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-23 09:32:22,261 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 09:32:22,262 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 09:32:22,263 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 09:32:22,263 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 09:32:22,263 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 09:32:22,263 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 09:32:22,263 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 09:32:22,264 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 09:32:22,304 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states. [2020-12-23 09:32:22,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-23 09:32:22,321 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:22,322 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:22,323 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:22,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:22,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1352099133, now seen corresponding path program 1 times [2020-12-23 09:32:22,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:22,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685899049] [2020-12-23 09:32:22,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:22,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:22,677 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 09:32:22,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685899049] [2020-12-23 09:32:22,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:22,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:22,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838204338] [2020-12-23 09:32:22,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:32:22,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:22,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:32:22,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:32:22,713 INFO L87 Difference]: Start difference. First operand 673 states. Second operand 3 states. [2020-12-23 09:32:22,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:22,862 INFO L93 Difference]: Finished difference Result 1341 states and 2065 transitions. [2020-12-23 09:32:22,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:32:22,864 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2020-12-23 09:32:22,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:22,888 INFO L225 Difference]: With dead ends: 1341 [2020-12-23 09:32:22,888 INFO L226 Difference]: Without dead ends: 669 [2020-12-23 09:32:22,896 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 09:32:22,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2020-12-23 09:32:23,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 669. [2020-12-23 09:32:23,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 669 states. [2020-12-23 09:32:23,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 1011 transitions. [2020-12-23 09:32:23,021 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 1011 transitions. Word has length 94 [2020-12-23 09:32:23,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:23,021 INFO L481 AbstractCegarLoop]: Abstraction has 669 states and 1011 transitions. [2020-12-23 09:32:23,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:32:23,022 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 1011 transitions. [2020-12-23 09:32:23,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-23 09:32:23,026 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:23,026 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:23,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 09:32:23,027 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:23,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:23,028 INFO L82 PathProgramCache]: Analyzing trace with hash -524964097, now seen corresponding path program 1 times [2020-12-23 09:32:23,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:23,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579303450] [2020-12-23 09:32:23,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:23,211 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 09:32:23,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579303450] [2020-12-23 09:32:23,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:23,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:32:23,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455465533] [2020-12-23 09:32:23,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:32:23,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:23,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:32:23,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:32:23,216 INFO L87 Difference]: Start difference. First operand 669 states and 1011 transitions. Second operand 3 states. [2020-12-23 09:32:23,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:23,288 INFO L93 Difference]: Finished difference Result 1859 states and 2801 transitions. [2020-12-23 09:32:23,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:32:23,289 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2020-12-23 09:32:23,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:23,297 INFO L225 Difference]: With dead ends: 1859 [2020-12-23 09:32:23,298 INFO L226 Difference]: Without dead ends: 1201 [2020-12-23 09:32:23,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:32:23,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2020-12-23 09:32:23,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 1197. [2020-12-23 09:32:23,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2020-12-23 09:32:23,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1802 transitions. [2020-12-23 09:32:23,357 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1802 transitions. Word has length 94 [2020-12-23 09:32:23,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:23,358 INFO L481 AbstractCegarLoop]: Abstraction has 1197 states and 1802 transitions. [2020-12-23 09:32:23,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:32:23,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1802 transitions. [2020-12-23 09:32:23,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-23 09:32:23,362 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:23,362 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:23,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 09:32:23,362 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:23,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:23,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1381399163, now seen corresponding path program 1 times [2020-12-23 09:32:23,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:23,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390075527] [2020-12-23 09:32:23,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:23,441 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 09:32:23,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390075527] [2020-12-23 09:32:23,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:23,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:23,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102976726] [2020-12-23 09:32:23,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:23,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:23,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:23,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:23,448 INFO L87 Difference]: Start difference. First operand 1197 states and 1802 transitions. Second operand 4 states. [2020-12-23 09:32:23,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:23,632 INFO L93 Difference]: Finished difference Result 2913 states and 4378 transitions. [2020-12-23 09:32:23,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:23,633 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2020-12-23 09:32:23,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:23,643 INFO L225 Difference]: With dead ends: 2913 [2020-12-23 09:32:23,644 INFO L226 Difference]: Without dead ends: 1728 [2020-12-23 09:32:23,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 09:32:23,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2020-12-23 09:32:23,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1197. [2020-12-23 09:32:23,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2020-12-23 09:32:23,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1799 transitions. [2020-12-23 09:32:23,717 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1799 transitions. Word has length 94 [2020-12-23 09:32:23,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:23,726 INFO L481 AbstractCegarLoop]: Abstraction has 1197 states and 1799 transitions. [2020-12-23 09:32:23,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:23,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1799 transitions. [2020-12-23 09:32:23,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-23 09:32:23,731 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:23,731 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:23,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 09:32:23,732 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:23,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:23,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1588711939, now seen corresponding path program 1 times [2020-12-23 09:32:23,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:23,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896017193] [2020-12-23 09:32:23,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:23,821 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 09:32:23,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896017193] [2020-12-23 09:32:23,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:23,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:23,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225102448] [2020-12-23 09:32:23,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:23,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:23,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:23,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:23,825 INFO L87 Difference]: Start difference. First operand 1197 states and 1799 transitions. Second operand 4 states. [2020-12-23 09:32:23,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:23,968 INFO L93 Difference]: Finished difference Result 2909 states and 4364 transitions. [2020-12-23 09:32:23,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:23,968 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2020-12-23 09:32:23,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:23,978 INFO L225 Difference]: With dead ends: 2909 [2020-12-23 09:32:23,978 INFO L226 Difference]: Without dead ends: 1726 [2020-12-23 09:32:23,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 09:32:23,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2020-12-23 09:32:24,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1197. [2020-12-23 09:32:24,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2020-12-23 09:32:24,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1796 transitions. [2020-12-23 09:32:24,069 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1796 transitions. Word has length 94 [2020-12-23 09:32:24,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:24,070 INFO L481 AbstractCegarLoop]: Abstraction has 1197 states and 1796 transitions. [2020-12-23 09:32:24,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:24,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1796 transitions. [2020-12-23 09:32:24,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-23 09:32:24,079 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:24,079 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:24,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 09:32:24,080 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:24,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:24,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1648417279, now seen corresponding path program 1 times [2020-12-23 09:32:24,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:24,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682586180] [2020-12-23 09:32:24,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:24,198 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 09:32:24,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682586180] [2020-12-23 09:32:24,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:24,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:32:24,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017992124] [2020-12-23 09:32:24,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:32:24,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:24,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:32:24,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:32:24,202 INFO L87 Difference]: Start difference. First operand 1197 states and 1796 transitions. Second operand 3 states. [2020-12-23 09:32:24,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:24,286 INFO L93 Difference]: Finished difference Result 2379 states and 3569 transitions. [2020-12-23 09:32:24,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:32:24,288 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2020-12-23 09:32:24,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:24,295 INFO L225 Difference]: With dead ends: 2379 [2020-12-23 09:32:24,295 INFO L226 Difference]: Without dead ends: 1197 [2020-12-23 09:32:24,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:32:24,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2020-12-23 09:32:24,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1197. [2020-12-23 09:32:24,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2020-12-23 09:32:24,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1788 transitions. [2020-12-23 09:32:24,361 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1788 transitions. Word has length 94 [2020-12-23 09:32:24,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:24,361 INFO L481 AbstractCegarLoop]: Abstraction has 1197 states and 1788 transitions. [2020-12-23 09:32:24,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:32:24,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1788 transitions. [2020-12-23 09:32:24,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-23 09:32:24,363 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:24,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:32:24,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 09:32:24,363 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:24,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:24,364 INFO L82 PathProgramCache]: Analyzing trace with hash 371901307, now seen corresponding path program 1 times [2020-12-23 09:32:24,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:24,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473663666] [2020-12-23 09:32:24,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:24,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:24,460 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 09:32:24,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473663666] [2020-12-23 09:32:24,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:24,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:32:24,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083207887] [2020-12-23 09:32:24,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:32:24,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:24,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:32:24,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:32:24,466 INFO L87 Difference]: Start difference. First operand 1197 states and 1788 transitions. Second operand 3 states. [2020-12-23 09:32:24,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:24,563 INFO L93 Difference]: Finished difference Result 2378 states and 3552 transitions. [2020-12-23 09:32:24,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:32:24,564 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2020-12-23 09:32:24,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:24,571 INFO L225 Difference]: With dead ends: 2378 [2020-12-23 09:32:24,571 INFO L226 Difference]: Without dead ends: 1197 [2020-12-23 09:32:24,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:32:24,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2020-12-23 09:32:24,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1197. [2020-12-23 09:32:24,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2020-12-23 09:32:24,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1780 transitions. [2020-12-23 09:32:24,662 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1780 transitions. Word has length 94 [2020-12-23 09:32:24,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:24,662 INFO L481 AbstractCegarLoop]: Abstraction has 1197 states and 1780 transitions. [2020-12-23 09:32:24,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:32:24,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1780 transitions. [2020-12-23 09:32:24,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-23 09:32:24,663 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:24,663 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:24,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 09:32:24,664 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:24,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:24,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1193297281, now seen corresponding path program 1 times [2020-12-23 09:32:24,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:24,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736612711] [2020-12-23 09:32:24,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:24,756 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 09:32:24,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736612711] [2020-12-23 09:32:24,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:24,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:24,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143109216] [2020-12-23 09:32:24,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:24,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:24,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:24,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:24,760 INFO L87 Difference]: Start difference. First operand 1197 states and 1780 transitions. Second operand 4 states. [2020-12-23 09:32:24,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:24,933 INFO L93 Difference]: Finished difference Result 2903 states and 4312 transitions. [2020-12-23 09:32:24,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:24,933 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2020-12-23 09:32:24,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:24,942 INFO L225 Difference]: With dead ends: 2903 [2020-12-23 09:32:24,942 INFO L226 Difference]: Without dead ends: 1723 [2020-12-23 09:32:24,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 09:32:24,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2020-12-23 09:32:25,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1197. [2020-12-23 09:32:25,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2020-12-23 09:32:25,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1777 transitions. [2020-12-23 09:32:25,026 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1777 transitions. Word has length 94 [2020-12-23 09:32:25,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:25,027 INFO L481 AbstractCegarLoop]: Abstraction has 1197 states and 1777 transitions. [2020-12-23 09:32:25,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:25,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1777 transitions. [2020-12-23 09:32:25,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-23 09:32:25,028 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:25,028 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:25,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 09:32:25,028 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:25,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:25,029 INFO L82 PathProgramCache]: Analyzing trace with hash -354263619, now seen corresponding path program 1 times [2020-12-23 09:32:25,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:25,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091100644] [2020-12-23 09:32:25,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:25,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:25,101 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 09:32:25,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091100644] [2020-12-23 09:32:25,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:25,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:25,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028839981] [2020-12-23 09:32:25,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:25,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:25,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:25,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:25,103 INFO L87 Difference]: Start difference. First operand 1197 states and 1777 transitions. Second operand 4 states. [2020-12-23 09:32:25,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:25,379 INFO L93 Difference]: Finished difference Result 2852 states and 4232 transitions. [2020-12-23 09:32:25,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:25,379 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2020-12-23 09:32:25,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:25,388 INFO L225 Difference]: With dead ends: 2852 [2020-12-23 09:32:25,389 INFO L226 Difference]: Without dead ends: 1673 [2020-12-23 09:32:25,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 09:32:25,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2020-12-23 09:32:25,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 1197. [2020-12-23 09:32:25,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2020-12-23 09:32:25,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1774 transitions. [2020-12-23 09:32:25,468 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1774 transitions. Word has length 94 [2020-12-23 09:32:25,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:25,469 INFO L481 AbstractCegarLoop]: Abstraction has 1197 states and 1774 transitions. [2020-12-23 09:32:25,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:25,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1774 transitions. [2020-12-23 09:32:25,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-23 09:32:25,470 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:25,470 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:25,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 09:32:25,472 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:25,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:25,475 INFO L82 PathProgramCache]: Analyzing trace with hash -327198017, now seen corresponding path program 1 times [2020-12-23 09:32:25,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:25,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992221812] [2020-12-23 09:32:25,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:25,545 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 09:32:25,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992221812] [2020-12-23 09:32:25,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:25,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:25,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071375252] [2020-12-23 09:32:25,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:25,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:25,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:25,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:25,554 INFO L87 Difference]: Start difference. First operand 1197 states and 1774 transitions. Second operand 4 states. [2020-12-23 09:32:25,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:25,823 INFO L93 Difference]: Finished difference Result 2850 states and 4222 transitions. [2020-12-23 09:32:25,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:25,824 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2020-12-23 09:32:25,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:25,832 INFO L225 Difference]: With dead ends: 2850 [2020-12-23 09:32:25,833 INFO L226 Difference]: Without dead ends: 1672 [2020-12-23 09:32:25,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 09:32:25,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2020-12-23 09:32:25,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1197. [2020-12-23 09:32:25,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2020-12-23 09:32:25,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1771 transitions. [2020-12-23 09:32:25,929 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1771 transitions. Word has length 94 [2020-12-23 09:32:25,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:25,930 INFO L481 AbstractCegarLoop]: Abstraction has 1197 states and 1771 transitions. [2020-12-23 09:32:25,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:25,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1771 transitions. [2020-12-23 09:32:25,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-23 09:32:25,933 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:25,933 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:25,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 09:32:25,933 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:25,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:25,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1890432381, now seen corresponding path program 1 times [2020-12-23 09:32:25,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:25,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745797381] [2020-12-23 09:32:25,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:25,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:25,984 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 09:32:25,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745797381] [2020-12-23 09:32:25,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:25,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:32:25,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818385829] [2020-12-23 09:32:25,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:32:25,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:25,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:32:25,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:32:25,987 INFO L87 Difference]: Start difference. First operand 1197 states and 1771 transitions. Second operand 3 states. [2020-12-23 09:32:26,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:26,109 INFO L93 Difference]: Finished difference Result 2374 states and 3514 transitions. [2020-12-23 09:32:26,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:32:26,109 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2020-12-23 09:32:26,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:26,115 INFO L225 Difference]: With dead ends: 2374 [2020-12-23 09:32:26,116 INFO L226 Difference]: Without dead ends: 1197 [2020-12-23 09:32:26,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:32:26,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2020-12-23 09:32:26,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1197. [2020-12-23 09:32:26,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2020-12-23 09:32:26,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1747 transitions. [2020-12-23 09:32:26,200 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1747 transitions. Word has length 94 [2020-12-23 09:32:26,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:26,201 INFO L481 AbstractCegarLoop]: Abstraction has 1197 states and 1747 transitions. [2020-12-23 09:32:26,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:32:26,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1747 transitions. [2020-12-23 09:32:26,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-23 09:32:26,202 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:26,202 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:26,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 09:32:26,203 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:26,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:26,203 INFO L82 PathProgramCache]: Analyzing trace with hash -2119106878, now seen corresponding path program 1 times [2020-12-23 09:32:26,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:26,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557933246] [2020-12-23 09:32:26,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:26,258 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 09:32:26,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557933246] [2020-12-23 09:32:26,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:26,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:26,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794554052] [2020-12-23 09:32:26,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:26,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:26,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:26,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:26,260 INFO L87 Difference]: Start difference. First operand 1197 states and 1747 transitions. Second operand 4 states. [2020-12-23 09:32:26,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:26,494 INFO L93 Difference]: Finished difference Result 2844 states and 4149 transitions. [2020-12-23 09:32:26,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:26,494 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2020-12-23 09:32:26,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:26,503 INFO L225 Difference]: With dead ends: 2844 [2020-12-23 09:32:26,503 INFO L226 Difference]: Without dead ends: 1669 [2020-12-23 09:32:26,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 09:32:26,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2020-12-23 09:32:26,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1197. [2020-12-23 09:32:26,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2020-12-23 09:32:26,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1744 transitions. [2020-12-23 09:32:26,594 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1744 transitions. Word has length 94 [2020-12-23 09:32:26,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:26,595 INFO L481 AbstractCegarLoop]: Abstraction has 1197 states and 1744 transitions. [2020-12-23 09:32:26,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:26,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1744 transitions. [2020-12-23 09:32:26,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-23 09:32:26,596 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:26,596 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:26,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 09:32:26,597 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:26,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:26,597 INFO L82 PathProgramCache]: Analyzing trace with hash 264817860, now seen corresponding path program 1 times [2020-12-23 09:32:26,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:26,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370127042] [2020-12-23 09:32:26,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:26,645 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 09:32:26,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370127042] [2020-12-23 09:32:26,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:26,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:26,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915350872] [2020-12-23 09:32:26,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:26,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:26,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:26,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:26,648 INFO L87 Difference]: Start difference. First operand 1197 states and 1744 transitions. Second operand 4 states. [2020-12-23 09:32:26,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:26,886 INFO L93 Difference]: Finished difference Result 2842 states and 4139 transitions. [2020-12-23 09:32:26,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:26,886 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2020-12-23 09:32:26,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:26,895 INFO L225 Difference]: With dead ends: 2842 [2020-12-23 09:32:26,895 INFO L226 Difference]: Without dead ends: 1668 [2020-12-23 09:32:26,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 09:32:26,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2020-12-23 09:32:26,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1197. [2020-12-23 09:32:26,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2020-12-23 09:32:26,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1741 transitions. [2020-12-23 09:32:26,998 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1741 transitions. Word has length 94 [2020-12-23 09:32:26,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:26,998 INFO L481 AbstractCegarLoop]: Abstraction has 1197 states and 1741 transitions. [2020-12-23 09:32:26,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:26,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1741 transitions. [2020-12-23 09:32:26,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-23 09:32:26,999 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:27,000 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:27,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 09:32:27,000 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:27,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:27,001 INFO L82 PathProgramCache]: Analyzing trace with hash 341718658, now seen corresponding path program 1 times [2020-12-23 09:32:27,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:27,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394803842] [2020-12-23 09:32:27,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:27,053 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 09:32:27,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394803842] [2020-12-23 09:32:27,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:27,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:27,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342435778] [2020-12-23 09:32:27,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:27,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:27,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:27,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:27,056 INFO L87 Difference]: Start difference. First operand 1197 states and 1741 transitions. Second operand 4 states. [2020-12-23 09:32:27,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:27,302 INFO L93 Difference]: Finished difference Result 2840 states and 4129 transitions. [2020-12-23 09:32:27,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:27,303 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2020-12-23 09:32:27,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:27,311 INFO L225 Difference]: With dead ends: 2840 [2020-12-23 09:32:27,312 INFO L226 Difference]: Without dead ends: 1667 [2020-12-23 09:32:27,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 09:32:27,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2020-12-23 09:32:27,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1197. [2020-12-23 09:32:27,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2020-12-23 09:32:27,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1738 transitions. [2020-12-23 09:32:27,410 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1738 transitions. Word has length 94 [2020-12-23 09:32:27,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:27,411 INFO L481 AbstractCegarLoop]: Abstraction has 1197 states and 1738 transitions. [2020-12-23 09:32:27,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:27,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1738 transitions. [2020-12-23 09:32:27,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-23 09:32:27,412 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:27,412 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:27,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 09:32:27,412 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:27,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:27,413 INFO L82 PathProgramCache]: Analyzing trace with hash -625631996, now seen corresponding path program 1 times [2020-12-23 09:32:27,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:27,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107995810] [2020-12-23 09:32:27,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:27,470 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 09:32:27,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107995810] [2020-12-23 09:32:27,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:27,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:32:27,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129485992] [2020-12-23 09:32:27,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:32:27,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:27,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:32:27,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:32:27,472 INFO L87 Difference]: Start difference. First operand 1197 states and 1738 transitions. Second operand 5 states. [2020-12-23 09:32:27,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:27,918 INFO L93 Difference]: Finished difference Result 4545 states and 6592 transitions. [2020-12-23 09:32:27,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:32:27,919 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-12-23 09:32:27,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:27,935 INFO L225 Difference]: With dead ends: 4545 [2020-12-23 09:32:27,936 INFO L226 Difference]: Without dead ends: 3379 [2020-12-23 09:32:27,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:32:27,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3379 states. [2020-12-23 09:32:28,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3379 to 1251. [2020-12-23 09:32:28,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1251 states. [2020-12-23 09:32:28,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1792 transitions. [2020-12-23 09:32:28,065 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1792 transitions. Word has length 94 [2020-12-23 09:32:28,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:28,066 INFO L481 AbstractCegarLoop]: Abstraction has 1251 states and 1792 transitions. [2020-12-23 09:32:28,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:32:28,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1792 transitions. [2020-12-23 09:32:28,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-23 09:32:28,067 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:28,067 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:28,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 09:32:28,067 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:28,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:28,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1983155462, now seen corresponding path program 1 times [2020-12-23 09:32:28,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:28,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472699462] [2020-12-23 09:32:28,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:28,111 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 09:32:28,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472699462] [2020-12-23 09:32:28,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:28,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:28,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530700535] [2020-12-23 09:32:28,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:28,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:28,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:28,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:28,114 INFO L87 Difference]: Start difference. First operand 1251 states and 1792 transitions. Second operand 4 states. [2020-12-23 09:32:28,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:28,561 INFO L93 Difference]: Finished difference Result 4555 states and 6509 transitions. [2020-12-23 09:32:28,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:28,561 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2020-12-23 09:32:28,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:28,578 INFO L225 Difference]: With dead ends: 4555 [2020-12-23 09:32:28,578 INFO L226 Difference]: Without dead ends: 3330 [2020-12-23 09:32:28,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 09:32:28,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3330 states. [2020-12-23 09:32:28,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3330 to 3142. [2020-12-23 09:32:28,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3142 states. [2020-12-23 09:32:28,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3142 states to 3142 states and 4449 transitions. [2020-12-23 09:32:28,871 INFO L78 Accepts]: Start accepts. Automaton has 3142 states and 4449 transitions. Word has length 94 [2020-12-23 09:32:28,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:28,872 INFO L481 AbstractCegarLoop]: Abstraction has 3142 states and 4449 transitions. [2020-12-23 09:32:28,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:28,872 INFO L276 IsEmpty]: Start isEmpty. Operand 3142 states and 4449 transitions. [2020-12-23 09:32:28,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-23 09:32:28,874 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:28,874 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:28,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 09:32:28,875 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:28,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:28,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1031868449, now seen corresponding path program 1 times [2020-12-23 09:32:28,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:28,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292705204] [2020-12-23 09:32:28,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:28,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:28,924 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:32:28,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292705204] [2020-12-23 09:32:28,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:28,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:32:28,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181676929] [2020-12-23 09:32:28,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:32:28,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:28,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:32:28,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:32:28,926 INFO L87 Difference]: Start difference. First operand 3142 states and 4449 transitions. Second operand 5 states. [2020-12-23 09:32:29,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:29,669 INFO L93 Difference]: Finished difference Result 8247 states and 11722 transitions. [2020-12-23 09:32:29,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:32:29,670 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-12-23 09:32:29,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:29,701 INFO L225 Difference]: With dead ends: 8247 [2020-12-23 09:32:29,701 INFO L226 Difference]: Without dead ends: 5141 [2020-12-23 09:32:29,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:32:29,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5141 states. [2020-12-23 09:32:30,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5141 to 3193. [2020-12-23 09:32:30,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3193 states. [2020-12-23 09:32:30,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3193 states to 3193 states and 4471 transitions. [2020-12-23 09:32:30,107 INFO L78 Accepts]: Start accepts. Automaton has 3193 states and 4471 transitions. Word has length 111 [2020-12-23 09:32:30,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:30,107 INFO L481 AbstractCegarLoop]: Abstraction has 3193 states and 4471 transitions. [2020-12-23 09:32:30,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:32:30,108 INFO L276 IsEmpty]: Start isEmpty. Operand 3193 states and 4471 transitions. [2020-12-23 09:32:30,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-23 09:32:30,110 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:30,110 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:30,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 09:32:30,110 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:30,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:30,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1045468449, now seen corresponding path program 1 times [2020-12-23 09:32:30,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:30,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709446818] [2020-12-23 09:32:30,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:30,172 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:32:30,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709446818] [2020-12-23 09:32:30,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:30,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:32:30,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271167735] [2020-12-23 09:32:30,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:32:30,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:30,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:32:30,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:32:30,175 INFO L87 Difference]: Start difference. First operand 3193 states and 4471 transitions. Second operand 5 states. [2020-12-23 09:32:30,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:30,716 INFO L93 Difference]: Finished difference Result 7195 states and 10061 transitions. [2020-12-23 09:32:30,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:32:30,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-12-23 09:32:30,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:30,726 INFO L225 Difference]: With dead ends: 7195 [2020-12-23 09:32:30,726 INFO L226 Difference]: Without dead ends: 4045 [2020-12-23 09:32:30,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:32:30,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4045 states. [2020-12-23 09:32:31,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4045 to 3199. [2020-12-23 09:32:31,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3199 states. [2020-12-23 09:32:31,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3199 states to 3199 states and 4433 transitions. [2020-12-23 09:32:31,073 INFO L78 Accepts]: Start accepts. Automaton has 3199 states and 4433 transitions. Word has length 111 [2020-12-23 09:32:31,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:31,074 INFO L481 AbstractCegarLoop]: Abstraction has 3199 states and 4433 transitions. [2020-12-23 09:32:31,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:32:31,074 INFO L276 IsEmpty]: Start isEmpty. Operand 3199 states and 4433 transitions. [2020-12-23 09:32:31,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-23 09:32:31,076 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:31,076 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:31,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 09:32:31,076 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:31,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:31,077 INFO L82 PathProgramCache]: Analyzing trace with hash 862989341, now seen corresponding path program 1 times [2020-12-23 09:32:31,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:31,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707658272] [2020-12-23 09:32:31,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:31,129 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:32:31,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707658272] [2020-12-23 09:32:31,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:31,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:31,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412434665] [2020-12-23 09:32:31,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:31,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:31,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:31,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:31,133 INFO L87 Difference]: Start difference. First operand 3199 states and 4433 transitions. Second operand 4 states. [2020-12-23 09:32:32,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:32,169 INFO L93 Difference]: Finished difference Result 11845 states and 16399 transitions. [2020-12-23 09:32:32,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:32,170 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2020-12-23 09:32:32,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:32,188 INFO L225 Difference]: With dead ends: 11845 [2020-12-23 09:32:32,189 INFO L226 Difference]: Without dead ends: 8698 [2020-12-23 09:32:32,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 09:32:32,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8698 states. [2020-12-23 09:32:32,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8698 to 8336. [2020-12-23 09:32:32,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8336 states. [2020-12-23 09:32:32,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8336 states to 8336 states and 11446 transitions. [2020-12-23 09:32:32,988 INFO L78 Accepts]: Start accepts. Automaton has 8336 states and 11446 transitions. Word has length 111 [2020-12-23 09:32:32,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:32,988 INFO L481 AbstractCegarLoop]: Abstraction has 8336 states and 11446 transitions. [2020-12-23 09:32:32,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:32,988 INFO L276 IsEmpty]: Start isEmpty. Operand 8336 states and 11446 transitions. [2020-12-23 09:32:32,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-23 09:32:32,990 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:32,991 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:32,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-23 09:32:32,991 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:32,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:32,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1471832485, now seen corresponding path program 1 times [2020-12-23 09:32:32,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:32,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064502114] [2020-12-23 09:32:32,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:33,045 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:32:33,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064502114] [2020-12-23 09:32:33,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:33,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:32:33,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895734837] [2020-12-23 09:32:33,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:32:33,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:33,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:32:33,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:32:33,048 INFO L87 Difference]: Start difference. First operand 8336 states and 11446 transitions. Second operand 5 states. [2020-12-23 09:32:34,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:34,249 INFO L93 Difference]: Finished difference Result 21065 states and 29122 transitions. [2020-12-23 09:32:34,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:32:34,250 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-12-23 09:32:34,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:34,277 INFO L225 Difference]: With dead ends: 21065 [2020-12-23 09:32:34,277 INFO L226 Difference]: Without dead ends: 12785 [2020-12-23 09:32:34,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:32:34,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12785 states. [2020-12-23 09:32:35,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12785 to 8471. [2020-12-23 09:32:35,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8471 states. [2020-12-23 09:32:35,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8471 states to 8471 states and 11506 transitions. [2020-12-23 09:32:35,101 INFO L78 Accepts]: Start accepts. Automaton has 8471 states and 11506 transitions. Word has length 115 [2020-12-23 09:32:35,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:35,101 INFO L481 AbstractCegarLoop]: Abstraction has 8471 states and 11506 transitions. [2020-12-23 09:32:35,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:32:35,102 INFO L276 IsEmpty]: Start isEmpty. Operand 8471 states and 11506 transitions. [2020-12-23 09:32:35,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-23 09:32:35,104 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:35,104 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:35,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-23 09:32:35,105 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:35,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:35,105 INFO L82 PathProgramCache]: Analyzing trace with hash -792560231, now seen corresponding path program 1 times [2020-12-23 09:32:35,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:35,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129951913] [2020-12-23 09:32:35,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:35,168 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:32:35,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129951913] [2020-12-23 09:32:35,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:35,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:32:35,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133580921] [2020-12-23 09:32:35,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:32:35,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:35,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:32:35,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:32:35,170 INFO L87 Difference]: Start difference. First operand 8471 states and 11506 transitions. Second operand 5 states. [2020-12-23 09:32:36,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:36,792 INFO L93 Difference]: Finished difference Result 28195 states and 38758 transitions. [2020-12-23 09:32:36,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:32:36,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-12-23 09:32:36,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:36,834 INFO L225 Difference]: With dead ends: 28195 [2020-12-23 09:32:36,834 INFO L226 Difference]: Without dead ends: 19787 [2020-12-23 09:32:36,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:32:36,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19787 states. [2020-12-23 09:32:37,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19787 to 8831. [2020-12-23 09:32:37,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8831 states. [2020-12-23 09:32:37,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8831 states to 8831 states and 11866 transitions. [2020-12-23 09:32:37,707 INFO L78 Accepts]: Start accepts. Automaton has 8831 states and 11866 transitions. Word has length 115 [2020-12-23 09:32:37,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:37,707 INFO L481 AbstractCegarLoop]: Abstraction has 8831 states and 11866 transitions. [2020-12-23 09:32:37,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:32:37,707 INFO L276 IsEmpty]: Start isEmpty. Operand 8831 states and 11866 transitions. [2020-12-23 09:32:37,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-23 09:32:37,709 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:37,709 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:37,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-23 09:32:37,709 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:37,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:37,710 INFO L82 PathProgramCache]: Analyzing trace with hash -751885481, now seen corresponding path program 1 times [2020-12-23 09:32:37,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:37,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860825944] [2020-12-23 09:32:37,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:37,761 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:32:37,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860825944] [2020-12-23 09:32:37,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:37,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:32:37,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673648292] [2020-12-23 09:32:37,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:32:37,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:37,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:32:37,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:32:37,763 INFO L87 Difference]: Start difference. First operand 8831 states and 11866 transitions. Second operand 3 states. [2020-12-23 09:32:39,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:39,219 INFO L93 Difference]: Finished difference Result 25256 states and 33975 transitions. [2020-12-23 09:32:39,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:32:39,219 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 115 [2020-12-23 09:32:39,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:39,248 INFO L225 Difference]: With dead ends: 25256 [2020-12-23 09:32:39,248 INFO L226 Difference]: Without dead ends: 16493 [2020-12-23 09:32:39,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:32:39,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16493 states. [2020-12-23 09:32:40,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16493 to 16453. [2020-12-23 09:32:40,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16453 states. [2020-12-23 09:32:40,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16453 states to 16453 states and 22035 transitions. [2020-12-23 09:32:40,665 INFO L78 Accepts]: Start accepts. Automaton has 16453 states and 22035 transitions. Word has length 115 [2020-12-23 09:32:40,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:40,665 INFO L481 AbstractCegarLoop]: Abstraction has 16453 states and 22035 transitions. [2020-12-23 09:32:40,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:32:40,665 INFO L276 IsEmpty]: Start isEmpty. Operand 16453 states and 22035 transitions. [2020-12-23 09:32:40,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-23 09:32:40,668 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:40,668 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:40,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-23 09:32:40,669 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:40,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:40,669 INFO L82 PathProgramCache]: Analyzing trace with hash -649084234, now seen corresponding path program 1 times [2020-12-23 09:32:40,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:40,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078426854] [2020-12-23 09:32:40,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:40,719 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:32:40,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078426854] [2020-12-23 09:32:40,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:40,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:32:40,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737818086] [2020-12-23 09:32:40,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:32:40,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:40,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:32:40,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:32:40,721 INFO L87 Difference]: Start difference. First operand 16453 states and 22035 transitions. Second operand 5 states. [2020-12-23 09:32:42,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:42,787 INFO L93 Difference]: Finished difference Result 43629 states and 58901 transitions. [2020-12-23 09:32:42,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:32:42,788 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-12-23 09:32:42,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:42,819 INFO L225 Difference]: With dead ends: 43629 [2020-12-23 09:32:42,819 INFO L226 Difference]: Without dead ends: 27248 [2020-12-23 09:32:42,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:32:42,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27248 states. [2020-12-23 09:32:44,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27248 to 16810. [2020-12-23 09:32:44,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16810 states. [2020-12-23 09:32:44,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16810 states to 16810 states and 22290 transitions. [2020-12-23 09:32:44,677 INFO L78 Accepts]: Start accepts. Automaton has 16810 states and 22290 transitions. Word has length 115 [2020-12-23 09:32:44,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:44,677 INFO L481 AbstractCegarLoop]: Abstraction has 16810 states and 22290 transitions. [2020-12-23 09:32:44,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:32:44,678 INFO L276 IsEmpty]: Start isEmpty. Operand 16810 states and 22290 transitions. [2020-12-23 09:32:44,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-23 09:32:44,681 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:44,681 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:44,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-23 09:32:44,681 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:44,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:44,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1130164492, now seen corresponding path program 1 times [2020-12-23 09:32:44,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:44,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283833827] [2020-12-23 09:32:44,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:44,751 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:32:44,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283833827] [2020-12-23 09:32:44,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:44,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:44,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100001594] [2020-12-23 09:32:44,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:44,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:44,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:44,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:44,754 INFO L87 Difference]: Start difference. First operand 16810 states and 22290 transitions. Second operand 4 states. [2020-12-23 09:32:46,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:46,690 INFO L93 Difference]: Finished difference Result 41177 states and 54534 transitions. [2020-12-23 09:32:46,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:46,690 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-12-23 09:32:46,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:46,716 INFO L225 Difference]: With dead ends: 41177 [2020-12-23 09:32:46,716 INFO L226 Difference]: Without dead ends: 24441 [2020-12-23 09:32:46,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 09:32:46,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24441 states. [2020-12-23 09:32:48,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24441 to 16810. [2020-12-23 09:32:48,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16810 states. [2020-12-23 09:32:48,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16810 states to 16810 states and 22217 transitions. [2020-12-23 09:32:48,264 INFO L78 Accepts]: Start accepts. Automaton has 16810 states and 22217 transitions. Word has length 115 [2020-12-23 09:32:48,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:48,264 INFO L481 AbstractCegarLoop]: Abstraction has 16810 states and 22217 transitions. [2020-12-23 09:32:48,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:48,265 INFO L276 IsEmpty]: Start isEmpty. Operand 16810 states and 22217 transitions. [2020-12-23 09:32:48,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-23 09:32:48,267 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:48,267 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:48,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-23 09:32:48,267 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:48,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:48,268 INFO L82 PathProgramCache]: Analyzing trace with hash 808997554, now seen corresponding path program 1 times [2020-12-23 09:32:48,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:48,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320088491] [2020-12-23 09:32:48,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:48,324 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:32:48,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320088491] [2020-12-23 09:32:48,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:48,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:48,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987020001] [2020-12-23 09:32:48,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:48,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:48,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:48,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:48,326 INFO L87 Difference]: Start difference. First operand 16810 states and 22217 transitions. Second operand 4 states. [2020-12-23 09:32:50,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:50,499 INFO L93 Difference]: Finished difference Result 43713 states and 57439 transitions. [2020-12-23 09:32:50,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:50,500 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-12-23 09:32:50,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:50,529 INFO L225 Difference]: With dead ends: 43713 [2020-12-23 09:32:50,529 INFO L226 Difference]: Without dead ends: 26978 [2020-12-23 09:32:50,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 09:32:50,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26978 states. [2020-12-23 09:32:52,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26978 to 19336. [2020-12-23 09:32:52,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19336 states. [2020-12-23 09:32:52,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19336 states to 19336 states and 25195 transitions. [2020-12-23 09:32:52,412 INFO L78 Accepts]: Start accepts. Automaton has 19336 states and 25195 transitions. Word has length 115 [2020-12-23 09:32:52,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:52,412 INFO L481 AbstractCegarLoop]: Abstraction has 19336 states and 25195 transitions. [2020-12-23 09:32:52,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:52,412 INFO L276 IsEmpty]: Start isEmpty. Operand 19336 states and 25195 transitions. [2020-12-23 09:32:52,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-23 09:32:52,415 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:52,415 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:52,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-23 09:32:52,415 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:52,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:52,416 INFO L82 PathProgramCache]: Analyzing trace with hash 455909172, now seen corresponding path program 1 times [2020-12-23 09:32:52,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:52,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717044365] [2020-12-23 09:32:52,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:52,490 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:32:52,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717044365] [2020-12-23 09:32:52,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:52,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:52,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178035833] [2020-12-23 09:32:52,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:52,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:52,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:52,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:52,493 INFO L87 Difference]: Start difference. First operand 19336 states and 25195 transitions. Second operand 4 states. [2020-12-23 09:32:54,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:54,829 INFO L93 Difference]: Finished difference Result 47397 states and 61716 transitions. [2020-12-23 09:32:54,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:54,829 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-12-23 09:32:54,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:54,856 INFO L225 Difference]: With dead ends: 47397 [2020-12-23 09:32:54,856 INFO L226 Difference]: Without dead ends: 28199 [2020-12-23 09:32:54,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 09:32:54,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28199 states. [2020-12-23 09:32:56,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28199 to 19336. [2020-12-23 09:32:56,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19336 states. [2020-12-23 09:32:56,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19336 states to 19336 states and 25122 transitions. [2020-12-23 09:32:56,347 INFO L78 Accepts]: Start accepts. Automaton has 19336 states and 25122 transitions. Word has length 115 [2020-12-23 09:32:56,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:56,347 INFO L481 AbstractCegarLoop]: Abstraction has 19336 states and 25122 transitions. [2020-12-23 09:32:56,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:56,348 INFO L276 IsEmpty]: Start isEmpty. Operand 19336 states and 25122 transitions. [2020-12-23 09:32:56,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-23 09:32:56,350 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:56,350 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:56,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-23 09:32:56,350 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:56,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:56,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1910785422, now seen corresponding path program 1 times [2020-12-23 09:32:56,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:56,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210086733] [2020-12-23 09:32:56,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:56,406 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:32:56,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210086733] [2020-12-23 09:32:56,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:56,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:56,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184519726] [2020-12-23 09:32:56,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:56,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:56,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:56,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:56,408 INFO L87 Difference]: Start difference. First operand 19336 states and 25122 transitions. Second operand 4 states. [2020-12-23 09:32:58,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:58,895 INFO L93 Difference]: Finished difference Result 46797 states and 60759 transitions. [2020-12-23 09:32:58,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:58,895 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-12-23 09:32:58,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:58,925 INFO L225 Difference]: With dead ends: 46797 [2020-12-23 09:32:58,925 INFO L226 Difference]: Without dead ends: 27603 [2020-12-23 09:32:58,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 09:32:58,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27603 states. [2020-12-23 09:33:00,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27603 to 18976. [2020-12-23 09:33:00,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18976 states. [2020-12-23 09:33:00,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18976 states to 18976 states and 24449 transitions. [2020-12-23 09:33:00,615 INFO L78 Accepts]: Start accepts. Automaton has 18976 states and 24449 transitions. Word has length 115 [2020-12-23 09:33:00,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:00,616 INFO L481 AbstractCegarLoop]: Abstraction has 18976 states and 24449 transitions. [2020-12-23 09:33:00,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:00,616 INFO L276 IsEmpty]: Start isEmpty. Operand 18976 states and 24449 transitions. [2020-12-23 09:33:00,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-23 09:33:00,618 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:00,618 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:33:00,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-23 09:33:00,619 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:00,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:00,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1662638928, now seen corresponding path program 1 times [2020-12-23 09:33:00,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:00,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933161023] [2020-12-23 09:33:00,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:00,674 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:33:00,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933161023] [2020-12-23 09:33:00,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:00,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:00,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942261571] [2020-12-23 09:33:00,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:00,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:00,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:00,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:00,676 INFO L87 Difference]: Start difference. First operand 18976 states and 24449 transitions. Second operand 4 states. [2020-12-23 09:33:03,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:03,174 INFO L93 Difference]: Finished difference Result 45999 states and 59248 transitions. [2020-12-23 09:33:03,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:03,174 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-12-23 09:33:03,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:03,202 INFO L225 Difference]: With dead ends: 45999 [2020-12-23 09:33:03,203 INFO L226 Difference]: Without dead ends: 27166 [2020-12-23 09:33:03,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 09:33:03,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27166 states. [2020-12-23 09:33:04,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27166 to 18712. [2020-12-23 09:33:04,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18712 states. [2020-12-23 09:33:04,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18712 states to 18712 states and 23936 transitions. [2020-12-23 09:33:04,919 INFO L78 Accepts]: Start accepts. Automaton has 18712 states and 23936 transitions. Word has length 115 [2020-12-23 09:33:04,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:04,919 INFO L481 AbstractCegarLoop]: Abstraction has 18712 states and 23936 transitions. [2020-12-23 09:33:04,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:04,919 INFO L276 IsEmpty]: Start isEmpty. Operand 18712 states and 23936 transitions. [2020-12-23 09:33:04,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-23 09:33:04,921 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:04,921 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:33:04,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-23 09:33:04,921 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:04,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:04,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1238992206, now seen corresponding path program 1 times [2020-12-23 09:33:04,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:04,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717609578] [2020-12-23 09:33:04,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:04,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:04,973 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:33:04,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717609578] [2020-12-23 09:33:04,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:04,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:04,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368870832] [2020-12-23 09:33:04,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:04,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:04,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:04,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:04,975 INFO L87 Difference]: Start difference. First operand 18712 states and 23936 transitions. Second operand 4 states. [2020-12-23 09:33:07,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:07,795 INFO L93 Difference]: Finished difference Result 50726 states and 64501 transitions. [2020-12-23 09:33:07,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:07,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-12-23 09:33:07,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:07,834 INFO L225 Difference]: With dead ends: 50726 [2020-12-23 09:33:07,834 INFO L226 Difference]: Without dead ends: 32095 [2020-12-23 09:33:07,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 09:33:07,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32095 states. [2020-12-23 09:33:10,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32095 to 23300. [2020-12-23 09:33:10,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23300 states. [2020-12-23 09:33:10,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23300 states to 23300 states and 29130 transitions. [2020-12-23 09:33:10,187 INFO L78 Accepts]: Start accepts. Automaton has 23300 states and 29130 transitions. Word has length 115 [2020-12-23 09:33:10,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:10,188 INFO L481 AbstractCegarLoop]: Abstraction has 23300 states and 29130 transitions. [2020-12-23 09:33:10,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:10,188 INFO L276 IsEmpty]: Start isEmpty. Operand 23300 states and 29130 transitions. [2020-12-23 09:33:10,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-23 09:33:10,190 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:10,190 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:33:10,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-23 09:33:10,190 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:10,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:10,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1210607924, now seen corresponding path program 1 times [2020-12-23 09:33:10,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:10,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77280233] [2020-12-23 09:33:10,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:10,244 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:33:10,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77280233] [2020-12-23 09:33:10,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:10,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:10,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685206135] [2020-12-23 09:33:10,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:10,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:10,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:10,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:10,246 INFO L87 Difference]: Start difference. First operand 23300 states and 29130 transitions. Second operand 4 states. [2020-12-23 09:33:13,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:13,573 INFO L93 Difference]: Finished difference Result 55959 states and 69989 transitions. [2020-12-23 09:33:13,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:13,573 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-12-23 09:33:13,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:13,605 INFO L225 Difference]: With dead ends: 55959 [2020-12-23 09:33:13,605 INFO L226 Difference]: Without dead ends: 32921 [2020-12-23 09:33:13,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 09:33:13,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32921 states. [2020-12-23 09:33:15,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32921 to 22976. [2020-12-23 09:33:15,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22976 states. [2020-12-23 09:33:15,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22976 states to 22976 states and 28517 transitions. [2020-12-23 09:33:15,853 INFO L78 Accepts]: Start accepts. Automaton has 22976 states and 28517 transitions. Word has length 115 [2020-12-23 09:33:15,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:15,854 INFO L481 AbstractCegarLoop]: Abstraction has 22976 states and 28517 transitions. [2020-12-23 09:33:15,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:15,854 INFO L276 IsEmpty]: Start isEmpty. Operand 22976 states and 28517 transitions. [2020-12-23 09:33:15,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-23 09:33:15,856 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:15,857 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:33:15,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-23 09:33:15,857 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:15,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:15,857 INFO L82 PathProgramCache]: Analyzing trace with hash 181248626, now seen corresponding path program 1 times [2020-12-23 09:33:15,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:15,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348899510] [2020-12-23 09:33:15,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:15,908 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:33:15,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348899510] [2020-12-23 09:33:15,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:15,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:15,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984780998] [2020-12-23 09:33:15,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:15,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:15,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:15,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:15,910 INFO L87 Difference]: Start difference. First operand 22976 states and 28517 transitions. Second operand 4 states. [2020-12-23 09:33:19,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:19,100 INFO L93 Difference]: Finished difference Result 54847 states and 67953 transitions. [2020-12-23 09:33:19,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:19,101 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-12-23 09:33:19,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:19,132 INFO L225 Difference]: With dead ends: 54847 [2020-12-23 09:33:19,133 INFO L226 Difference]: Without dead ends: 32068 [2020-12-23 09:33:19,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 09:33:19,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32068 states. [2020-12-23 09:33:21,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32068 to 22016. [2020-12-23 09:33:21,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22016 states. [2020-12-23 09:33:21,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22016 states to 22016 states and 26844 transitions. [2020-12-23 09:33:21,185 INFO L78 Accepts]: Start accepts. Automaton has 22016 states and 26844 transitions. Word has length 115 [2020-12-23 09:33:21,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:21,185 INFO L481 AbstractCegarLoop]: Abstraction has 22016 states and 26844 transitions. [2020-12-23 09:33:21,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:21,185 INFO L276 IsEmpty]: Start isEmpty. Operand 22016 states and 26844 transitions. [2020-12-23 09:33:21,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-23 09:33:21,187 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:21,187 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:33:21,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-23 09:33:21,188 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:21,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:21,188 INFO L82 PathProgramCache]: Analyzing trace with hash 840780148, now seen corresponding path program 1 times [2020-12-23 09:33:21,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:21,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361384279] [2020-12-23 09:33:21,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:21,245 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:33:21,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361384279] [2020-12-23 09:33:21,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:21,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:21,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083198422] [2020-12-23 09:33:21,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:21,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:21,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:21,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:21,247 INFO L87 Difference]: Start difference. First operand 22016 states and 26844 transitions. Second operand 4 states. [2020-12-23 09:33:24,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:24,542 INFO L93 Difference]: Finished difference Result 52528 states and 64051 transitions. [2020-12-23 09:33:24,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:24,542 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-12-23 09:33:24,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:24,574 INFO L225 Difference]: With dead ends: 52528 [2020-12-23 09:33:24,574 INFO L226 Difference]: Without dead ends: 30764 [2020-12-23 09:33:24,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 09:33:24,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30764 states. [2020-12-23 09:33:26,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30764 to 21551. [2020-12-23 09:33:26,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21551 states. [2020-12-23 09:33:26,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21551 states to 21551 states and 25996 transitions. [2020-12-23 09:33:26,947 INFO L78 Accepts]: Start accepts. Automaton has 21551 states and 25996 transitions. Word has length 115 [2020-12-23 09:33:26,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:26,948 INFO L481 AbstractCegarLoop]: Abstraction has 21551 states and 25996 transitions. [2020-12-23 09:33:26,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:26,948 INFO L276 IsEmpty]: Start isEmpty. Operand 21551 states and 25996 transitions. [2020-12-23 09:33:26,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-23 09:33:26,949 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:26,949 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:33:26,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-23 09:33:26,950 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:26,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:26,950 INFO L82 PathProgramCache]: Analyzing trace with hash 446413362, now seen corresponding path program 1 times [2020-12-23 09:33:26,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:26,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582704805] [2020-12-23 09:33:26,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:27,003 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:33:27,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582704805] [2020-12-23 09:33:27,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:27,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:27,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485899869] [2020-12-23 09:33:27,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:33:27,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:27,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:33:27,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:33:27,005 INFO L87 Difference]: Start difference. First operand 21551 states and 25996 transitions. Second operand 3 states. [2020-12-23 09:33:30,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:30,866 INFO L93 Difference]: Finished difference Result 62705 states and 75065 transitions. [2020-12-23 09:33:30,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:33:30,866 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 115 [2020-12-23 09:33:30,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:30,909 INFO L225 Difference]: With dead ends: 62705 [2020-12-23 09:33:30,910 INFO L226 Difference]: Without dead ends: 41406 [2020-12-23 09:33:30,923 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 09:33:30,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41406 states. [2020-12-23 09:33:34,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41406 to 41406. [2020-12-23 09:33:34,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41406 states. [2020-12-23 09:33:35,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41406 states to 41406 states and 49209 transitions. [2020-12-23 09:33:35,061 INFO L78 Accepts]: Start accepts. Automaton has 41406 states and 49209 transitions. Word has length 115 [2020-12-23 09:33:35,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:35,061 INFO L481 AbstractCegarLoop]: Abstraction has 41406 states and 49209 transitions. [2020-12-23 09:33:35,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:33:35,061 INFO L276 IsEmpty]: Start isEmpty. Operand 41406 states and 49209 transitions. [2020-12-23 09:33:35,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-23 09:33:35,065 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:35,065 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:33:35,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-23 09:33:35,066 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:35,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:35,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1549243033, now seen corresponding path program 1 times [2020-12-23 09:33:35,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:35,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086795573] [2020-12-23 09:33:35,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:35,129 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:33:35,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086795573] [2020-12-23 09:33:35,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:35,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:35,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056632735] [2020-12-23 09:33:35,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:33:35,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:35,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:33:35,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:33:35,131 INFO L87 Difference]: Start difference. First operand 41406 states and 49209 transitions. Second operand 3 states. [2020-12-23 09:33:42,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:42,310 INFO L93 Difference]: Finished difference Result 119490 states and 141709 transitions. [2020-12-23 09:33:42,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:33:42,311 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 116 [2020-12-23 09:33:42,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:42,399 INFO L225 Difference]: With dead ends: 119490 [2020-12-23 09:33:42,399 INFO L226 Difference]: Without dead ends: 78584 [2020-12-23 09:33:42,430 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 09:33:42,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78584 states. [2020-12-23 09:33:50,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78584 to 78580. [2020-12-23 09:33:50,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78580 states. [2020-12-23 09:33:50,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78580 states to 78580 states and 92881 transitions. [2020-12-23 09:33:50,112 INFO L78 Accepts]: Start accepts. Automaton has 78580 states and 92881 transitions. Word has length 116 [2020-12-23 09:33:50,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:50,113 INFO L481 AbstractCegarLoop]: Abstraction has 78580 states and 92881 transitions. [2020-12-23 09:33:50,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:33:50,113 INFO L276 IsEmpty]: Start isEmpty. Operand 78580 states and 92881 transitions. [2020-12-23 09:33:50,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-23 09:33:50,118 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:50,118 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:33:50,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-23 09:33:50,119 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:50,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:50,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1098361321, now seen corresponding path program 1 times [2020-12-23 09:33:50,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:50,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779434908] [2020-12-23 09:33:50,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:50,145 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-23 09:33:50,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779434908] [2020-12-23 09:33:50,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:50,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:50,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744119539] [2020-12-23 09:33:50,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:33:50,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:50,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:33:50,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:33:50,147 INFO L87 Difference]: Start difference. First operand 78580 states and 92881 transitions. Second operand 3 states. [2020-12-23 09:33:57,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:57,741 INFO L93 Difference]: Finished difference Result 156168 states and 184647 transitions. [2020-12-23 09:33:57,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:33:57,742 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 116 [2020-12-23 09:33:57,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:57,830 INFO L225 Difference]: With dead ends: 156168 [2020-12-23 09:33:57,831 INFO L226 Difference]: Without dead ends: 78088 [2020-12-23 09:33:57,880 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 09:33:57,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78088 states. [2020-12-23 09:34:05,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78088 to 78088. [2020-12-23 09:34:05,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78088 states. [2020-12-23 09:34:05,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78088 states to 78088 states and 92327 transitions. [2020-12-23 09:34:05,596 INFO L78 Accepts]: Start accepts. Automaton has 78088 states and 92327 transitions. Word has length 116 [2020-12-23 09:34:05,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:34:05,596 INFO L481 AbstractCegarLoop]: Abstraction has 78088 states and 92327 transitions. [2020-12-23 09:34:05,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:34:05,596 INFO L276 IsEmpty]: Start isEmpty. Operand 78088 states and 92327 transitions. [2020-12-23 09:34:05,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-12-23 09:34:05,599 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:34:05,599 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:34:05,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-23 09:34:05,600 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:34:05,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:34:05,600 INFO L82 PathProgramCache]: Analyzing trace with hash -617979386, now seen corresponding path program 1 times [2020-12-23 09:34:05,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:34:05,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266659927] [2020-12-23 09:34:05,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:34:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:34:05,648 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:34:05,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266659927] [2020-12-23 09:34:05,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:34:05,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:34:05,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352065504] [2020-12-23 09:34:05,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:34:05,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:34:05,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:34:05,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:34:05,649 INFO L87 Difference]: Start difference. First operand 78088 states and 92327 transitions. Second operand 3 states. [2020-12-23 09:34:19,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:34:19,539 INFO L93 Difference]: Finished difference Result 229142 states and 270495 transitions. [2020-12-23 09:34:19,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:34:19,539 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 117 [2020-12-23 09:34:19,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:34:19,897 INFO L225 Difference]: With dead ends: 229142 [2020-12-23 09:34:19,897 INFO L226 Difference]: Without dead ends: 151554 [2020-12-23 09:34:19,960 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 09:34:20,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151554 states. [2020-12-23 09:34:34,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151554 to 148118. [2020-12-23 09:34:34,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148118 states. [2020-12-23 09:34:34,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148118 states to 148118 states and 174683 transitions. [2020-12-23 09:34:34,573 INFO L78 Accepts]: Start accepts. Automaton has 148118 states and 174683 transitions. Word has length 117 [2020-12-23 09:34:34,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:34:34,574 INFO L481 AbstractCegarLoop]: Abstraction has 148118 states and 174683 transitions. [2020-12-23 09:34:34,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:34:34,574 INFO L276 IsEmpty]: Start isEmpty. Operand 148118 states and 174683 transitions. [2020-12-23 09:34:34,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-12-23 09:34:34,582 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:34:34,582 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:34:34,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-12-23 09:34:34,583 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:34:34,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:34:34,583 INFO L82 PathProgramCache]: Analyzing trace with hash 2029624968, now seen corresponding path program 1 times [2020-12-23 09:34:34,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:34:34,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189953060] [2020-12-23 09:34:34,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:34:34,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:34:34,621 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-23 09:34:34,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189953060] [2020-12-23 09:34:34,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:34:34,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:34:34,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116566576] [2020-12-23 09:34:34,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:34:34,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:34:34,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:34:34,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:34:34,623 INFO L87 Difference]: Start difference. First operand 148118 states and 174683 transitions. Second operand 3 states.