/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.07.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 09:32:30,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 09:32:30,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 09:32:30,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 09:32:30,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 09:32:30,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 09:32:30,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 09:32:30,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 09:32:30,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 09:32:30,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 09:32:30,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 09:32:30,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 09:32:30,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 09:32:30,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 09:32:30,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 09:32:30,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 09:32:30,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 09:32:30,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 09:32:30,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 09:32:30,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 09:32:30,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 09:32:30,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 09:32:31,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 09:32:31,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 09:32:31,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 09:32:31,009 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 09:32:31,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 09:32:31,012 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 09:32:31,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 09:32:31,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 09:32:31,017 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 09:32:31,018 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 09:32:31,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 09:32:31,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 09:32:31,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 09:32:31,023 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 09:32:31,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 09:32:31,024 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 09:32:31,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 09:32:31,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 09:32:31,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 09:32:31,034 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 09:32:31,089 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 09:32:31,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 09:32:31,094 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 09:32:31,095 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 09:32:31,095 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 09:32:31,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 09:32:31,095 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 09:32:31,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 09:32:31,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 09:32:31,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 09:32:31,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 09:32:31,096 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 09:32:31,097 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 09:32:31,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 09:32:31,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 09:32:31,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 09:32:31,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 09:32:31,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 09:32:31,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 09:32:31,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 09:32:31,099 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 09:32:31,099 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 09:32:31,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 09:32:31,100 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 09:32:31,100 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 09:32:31,100 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 09:32:31,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 09:32:31,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 09:32:31,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 09:32:31,585 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 09:32:31,586 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 09:32:31,587 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.07.cil-2.c [2020-12-23 09:32:31,670 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/60455a2e5/603d7ff85e294273babc50636fd4348d/FLAG1d7530033 [2020-12-23 09:32:32,380 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 09:32:32,381 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.07.cil-2.c [2020-12-23 09:32:32,402 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/60455a2e5/603d7ff85e294273babc50636fd4348d/FLAG1d7530033 [2020-12-23 09:32:32,630 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/60455a2e5/603d7ff85e294273babc50636fd4348d [2020-12-23 09:32:32,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 09:32:32,636 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 09:32:32,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 09:32:32,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 09:32:32,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 09:32:32,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:32:32" (1/1) ... [2020-12-23 09:32:32,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59993826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:32, skipping insertion in model container [2020-12-23 09:32:32,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:32:32" (1/1) ... [2020-12-23 09:32:32,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 09:32:32,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 09:32:32,848 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.07.cil-2.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_7~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_7~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t7_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t7_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[~__retres1~7,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~7,] 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[~t7_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t7_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] 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[~tmp_ndt_8~0,] left hand side expression in assignment: lhs: VariableLHS[~t7_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[~T7_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[~E_7~0,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[~T7_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[~E_7~0,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[~tmp___6~0,] left hand side expression in assignment: lhs: VariableLHS[~t7_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[~T7_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[~E_7~0,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[~t7_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[~__retres1~9,] [2020-12-23 09:32:33,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:32:33,054 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 09:32:33,073 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.07.cil-2.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_7~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_7~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t7_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t7_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[~__retres1~7,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~7,] 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[~t7_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t7_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] 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[~tmp_ndt_8~0,] left hand side expression in assignment: lhs: VariableLHS[~t7_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[~T7_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[~E_7~0,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[~T7_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[~E_7~0,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[~tmp___6~0,] left hand side expression in assignment: lhs: VariableLHS[~t7_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[~T7_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[~E_7~0,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[~t7_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[~__retres1~9,] [2020-12-23 09:32:33,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:32:33,197 INFO L208 MainTranslator]: Completed translation [2020-12-23 09:32:33,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:33 WrapperNode [2020-12-23 09:32:33,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 09:32:33,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 09:32:33,199 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 09:32:33,199 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 09:32:33,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:33" (1/1) ... [2020-12-23 09:32:33,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:33" (1/1) ... [2020-12-23 09:32:33,409 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 09:32:33,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 09:32:33,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 09:32:33,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 09:32:33,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:33" (1/1) ... [2020-12-23 09:32:33,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:33" (1/1) ... [2020-12-23 09:32:33,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:33" (1/1) ... [2020-12-23 09:32:33,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:33" (1/1) ... [2020-12-23 09:32:33,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:33" (1/1) ... [2020-12-23 09:32:33,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:33" (1/1) ... [2020-12-23 09:32:33,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:33" (1/1) ... [2020-12-23 09:32:33,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 09:32:33,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 09:32:33,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 09:32:33,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 09:32:33,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:33" (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 09:32:33,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 09:32:33,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 09:32:33,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 09:32:33,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 09:32:35,482 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 09:32:35,483 INFO L299 CfgBuilder]: Removed 280 assume(true) statements. [2020-12-23 09:32:35,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:32:35 BoogieIcfgContainer [2020-12-23 09:32:35,488 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 09:32:35,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 09:32:35,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 09:32:35,495 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 09:32:35,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 09:32:32" (1/3) ... [2020-12-23 09:32:35,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ea70a78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:32:35, skipping insertion in model container [2020-12-23 09:32:35,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:33" (2/3) ... [2020-12-23 09:32:35,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ea70a78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:32:35, skipping insertion in model container [2020-12-23 09:32:35,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:32:35" (3/3) ... [2020-12-23 09:32:35,502 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.07.cil-2.c [2020-12-23 09:32:35,512 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 09:32:35,525 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-23 09:32:35,553 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-23 09:32:35,595 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 09:32:35,595 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 09:32:35,595 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 09:32:35,595 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 09:32:35,595 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 09:32:35,596 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 09:32:35,596 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 09:32:35,596 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 09:32:35,631 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states. [2020-12-23 09:32:35,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 09:32:35,645 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:35,646 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:35,647 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:35,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:35,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1880548039, now seen corresponding path program 1 times [2020-12-23 09:32:35,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:35,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134209718] [2020-12-23 09:32:35,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:35,975 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 09:32:35,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134209718] [2020-12-23 09:32:35,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:35,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:35,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713768756] [2020-12-23 09:32:35,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:32:35,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:36,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:32:36,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:32:36,012 INFO L87 Difference]: Start difference. First operand 820 states. Second operand 3 states. [2020-12-23 09:32:36,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:36,178 INFO L93 Difference]: Finished difference Result 1635 states and 2507 transitions. [2020-12-23 09:32:36,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:32:36,180 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-23 09:32:36,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:36,229 INFO L225 Difference]: With dead ends: 1635 [2020-12-23 09:32:36,229 INFO L226 Difference]: Without dead ends: 816 [2020-12-23 09:32:36,249 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 09:32:36,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2020-12-23 09:32:36,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 816. [2020-12-23 09:32:36,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-12-23 09:32:36,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1230 transitions. [2020-12-23 09:32:36,349 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1230 transitions. Word has length 105 [2020-12-23 09:32:36,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:36,350 INFO L481 AbstractCegarLoop]: Abstraction has 816 states and 1230 transitions. [2020-12-23 09:32:36,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:32:36,350 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1230 transitions. [2020-12-23 09:32:36,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 09:32:36,354 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:36,354 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:36,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 09:32:36,355 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:36,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:36,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1107276859, now seen corresponding path program 1 times [2020-12-23 09:32:36,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:36,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071957328] [2020-12-23 09:32:36,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:36,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:36,478 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 09:32:36,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071957328] [2020-12-23 09:32:36,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:36,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:32:36,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495194142] [2020-12-23 09:32:36,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:32:36,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:36,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:32:36,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:32:36,482 INFO L87 Difference]: Start difference. First operand 816 states and 1230 transitions. Second operand 3 states. [2020-12-23 09:32:36,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:36,569 INFO L93 Difference]: Finished difference Result 2280 states and 3426 transitions. [2020-12-23 09:32:36,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:32:36,569 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-23 09:32:36,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:36,576 INFO L225 Difference]: With dead ends: 2280 [2020-12-23 09:32:36,576 INFO L226 Difference]: Without dead ends: 1476 [2020-12-23 09:32:36,579 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 09:32:36,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2020-12-23 09:32:36,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1472. [2020-12-23 09:32:36,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1472 states. [2020-12-23 09:32:36,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2210 transitions. [2020-12-23 09:32:36,656 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2210 transitions. Word has length 105 [2020-12-23 09:32:36,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:36,657 INFO L481 AbstractCegarLoop]: Abstraction has 1472 states and 2210 transitions. [2020-12-23 09:32:36,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:32:36,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2210 transitions. [2020-12-23 09:32:36,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 09:32:36,659 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:36,660 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:36,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 09:32:36,660 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:36,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:36,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1591347777, now seen corresponding path program 1 times [2020-12-23 09:32:36,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:36,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786434844] [2020-12-23 09:32:36,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:36,791 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 09:32:36,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786434844] [2020-12-23 09:32:36,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:36,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:36,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050145965] [2020-12-23 09:32:36,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:36,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:36,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:36,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:36,801 INFO L87 Difference]: Start difference. First operand 1472 states and 2210 transitions. Second operand 4 states. [2020-12-23 09:32:36,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:36,956 INFO L93 Difference]: Finished difference Result 3588 states and 5377 transitions. [2020-12-23 09:32:36,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:36,957 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-23 09:32:36,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:36,968 INFO L225 Difference]: With dead ends: 3588 [2020-12-23 09:32:36,968 INFO L226 Difference]: Without dead ends: 2130 [2020-12-23 09:32:36,971 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 09:32:36,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2130 states. [2020-12-23 09:32:37,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2130 to 1472. [2020-12-23 09:32:37,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1472 states. [2020-12-23 09:32:37,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2207 transitions. [2020-12-23 09:32:37,096 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2207 transitions. Word has length 105 [2020-12-23 09:32:37,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:37,104 INFO L481 AbstractCegarLoop]: Abstraction has 1472 states and 2207 transitions. [2020-12-23 09:32:37,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:37,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2207 transitions. [2020-12-23 09:32:37,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 09:32:37,106 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:37,107 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:37,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 09:32:37,107 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:37,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:37,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1562847487, now seen corresponding path program 1 times [2020-12-23 09:32:37,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:37,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038023888] [2020-12-23 09:32:37,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:37,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:37,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:32:37,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038023888] [2020-12-23 09:32:37,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:37,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:37,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892842497] [2020-12-23 09:32:37,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:37,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:37,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:37,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:37,201 INFO L87 Difference]: Start difference. First operand 1472 states and 2207 transitions. Second operand 4 states. [2020-12-23 09:32:37,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:37,376 INFO L93 Difference]: Finished difference Result 3586 states and 5367 transitions. [2020-12-23 09:32:37,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:37,377 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-23 09:32:37,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:37,387 INFO L225 Difference]: With dead ends: 3586 [2020-12-23 09:32:37,388 INFO L226 Difference]: Without dead ends: 2129 [2020-12-23 09:32:37,391 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 09:32:37,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2129 states. [2020-12-23 09:32:37,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2129 to 1472. [2020-12-23 09:32:37,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1472 states. [2020-12-23 09:32:37,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2204 transitions. [2020-12-23 09:32:37,471 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2204 transitions. Word has length 105 [2020-12-23 09:32:37,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:37,471 INFO L481 AbstractCegarLoop]: Abstraction has 1472 states and 2204 transitions. [2020-12-23 09:32:37,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:37,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2204 transitions. [2020-12-23 09:32:37,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 09:32:37,476 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:37,476 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:37,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 09:32:37,477 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:37,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:37,478 INFO L82 PathProgramCache]: Analyzing trace with hash -377734527, now seen corresponding path program 1 times [2020-12-23 09:32:37,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:37,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619420345] [2020-12-23 09:32:37,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:37,607 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 09:32:37,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619420345] [2020-12-23 09:32:37,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:37,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:32:37,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065762035] [2020-12-23 09:32:37,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:32:37,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:37,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:32:37,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:32:37,612 INFO L87 Difference]: Start difference. First operand 1472 states and 2204 transitions. Second operand 3 states. [2020-12-23 09:32:37,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:37,705 INFO L93 Difference]: Finished difference Result 2928 states and 4383 transitions. [2020-12-23 09:32:37,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:32:37,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-23 09:32:37,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:37,712 INFO L225 Difference]: With dead ends: 2928 [2020-12-23 09:32:37,713 INFO L226 Difference]: Without dead ends: 1472 [2020-12-23 09:32:37,718 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 09:32:37,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2020-12-23 09:32:37,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1472. [2020-12-23 09:32:37,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1472 states. [2020-12-23 09:32:37,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2196 transitions. [2020-12-23 09:32:37,826 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2196 transitions. Word has length 105 [2020-12-23 09:32:37,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:37,826 INFO L481 AbstractCegarLoop]: Abstraction has 1472 states and 2196 transitions. [2020-12-23 09:32:37,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:32:37,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2196 transitions. [2020-12-23 09:32:37,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 09:32:37,827 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:37,828 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:37,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 09:32:37,828 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:37,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:37,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1561368317, now seen corresponding path program 1 times [2020-12-23 09:32:37,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:37,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134106059] [2020-12-23 09:32:37,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:37,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:37,916 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 09:32:37,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134106059] [2020-12-23 09:32:37,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:37,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:32:37,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959292079] [2020-12-23 09:32:37,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:32:37,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:37,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:32:37,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:32:37,920 INFO L87 Difference]: Start difference. First operand 1472 states and 2196 transitions. Second operand 3 states. [2020-12-23 09:32:38,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:38,019 INFO L93 Difference]: Finished difference Result 2927 states and 4366 transitions. [2020-12-23 09:32:38,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:32:38,020 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-23 09:32:38,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:38,028 INFO L225 Difference]: With dead ends: 2927 [2020-12-23 09:32:38,028 INFO L226 Difference]: Without dead ends: 1472 [2020-12-23 09:32:38,031 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 09:32:38,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2020-12-23 09:32:38,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1472. [2020-12-23 09:32:38,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1472 states. [2020-12-23 09:32:38,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2188 transitions. [2020-12-23 09:32:38,113 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2188 transitions. Word has length 105 [2020-12-23 09:32:38,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:38,113 INFO L481 AbstractCegarLoop]: Abstraction has 1472 states and 2188 transitions. [2020-12-23 09:32:38,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:32:38,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2188 transitions. [2020-12-23 09:32:38,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 09:32:38,117 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:38,117 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:38,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 09:32:38,117 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:38,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:38,123 INFO L82 PathProgramCache]: Analyzing trace with hash 931183361, now seen corresponding path program 1 times [2020-12-23 09:32:38,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:38,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579334329] [2020-12-23 09:32:38,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:38,200 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 09:32:38,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579334329] [2020-12-23 09:32:38,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:38,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:38,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831581006] [2020-12-23 09:32:38,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:38,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:38,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:38,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:38,203 INFO L87 Difference]: Start difference. First operand 1472 states and 2188 transitions. Second operand 4 states. [2020-12-23 09:32:38,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:38,402 INFO L93 Difference]: Finished difference Result 3580 states and 5315 transitions. [2020-12-23 09:32:38,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:38,403 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-23 09:32:38,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:38,415 INFO L225 Difference]: With dead ends: 3580 [2020-12-23 09:32:38,415 INFO L226 Difference]: Without dead ends: 2126 [2020-12-23 09:32:38,419 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 09:32:38,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2020-12-23 09:32:38,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 1472. [2020-12-23 09:32:38,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1472 states. [2020-12-23 09:32:38,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2185 transitions. [2020-12-23 09:32:38,514 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2185 transitions. Word has length 105 [2020-12-23 09:32:38,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:38,514 INFO L481 AbstractCegarLoop]: Abstraction has 1472 states and 2185 transitions. [2020-12-23 09:32:38,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:38,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2185 transitions. [2020-12-23 09:32:38,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 09:32:38,516 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:38,516 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:38,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 09:32:38,516 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:38,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:38,517 INFO L82 PathProgramCache]: Analyzing trace with hash -63510337, now seen corresponding path program 1 times [2020-12-23 09:32:38,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:38,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173723702] [2020-12-23 09:32:38,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:38,567 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 09:32:38,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173723702] [2020-12-23 09:32:38,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:38,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:38,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710435724] [2020-12-23 09:32:38,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:38,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:38,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:38,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:38,572 INFO L87 Difference]: Start difference. First operand 1472 states and 2185 transitions. Second operand 4 states. [2020-12-23 09:32:38,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:38,749 INFO L93 Difference]: Finished difference Result 3578 states and 5305 transitions. [2020-12-23 09:32:38,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:38,750 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-23 09:32:38,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:38,761 INFO L225 Difference]: With dead ends: 3578 [2020-12-23 09:32:38,761 INFO L226 Difference]: Without dead ends: 2125 [2020-12-23 09:32:38,765 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 09:32:38,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2020-12-23 09:32:38,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 1472. [2020-12-23 09:32:38,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1472 states. [2020-12-23 09:32:38,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2182 transitions. [2020-12-23 09:32:38,877 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2182 transitions. Word has length 105 [2020-12-23 09:32:38,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:38,877 INFO L481 AbstractCegarLoop]: Abstraction has 1472 states and 2182 transitions. [2020-12-23 09:32:38,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:38,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2182 transitions. [2020-12-23 09:32:38,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 09:32:38,879 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:38,879 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:38,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 09:32:38,881 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:38,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:38,882 INFO L82 PathProgramCache]: Analyzing trace with hash -649786559, now seen corresponding path program 1 times [2020-12-23 09:32:38,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:38,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186117715] [2020-12-23 09:32:38,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:38,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:38,929 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 09:32:38,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186117715] [2020-12-23 09:32:38,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:38,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:38,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669904454] [2020-12-23 09:32:38,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:38,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:38,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:38,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:38,937 INFO L87 Difference]: Start difference. First operand 1472 states and 2182 transitions. Second operand 4 states. [2020-12-23 09:32:39,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:39,212 INFO L93 Difference]: Finished difference Result 3520 states and 5215 transitions. [2020-12-23 09:32:39,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:39,213 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-23 09:32:39,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:39,223 INFO L225 Difference]: With dead ends: 3520 [2020-12-23 09:32:39,223 INFO L226 Difference]: Without dead ends: 2068 [2020-12-23 09:32:39,227 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 09:32:39,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2068 states. [2020-12-23 09:32:39,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2068 to 1472. [2020-12-23 09:32:39,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1472 states. [2020-12-23 09:32:39,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2179 transitions. [2020-12-23 09:32:39,344 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2179 transitions. Word has length 105 [2020-12-23 09:32:39,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:39,346 INFO L481 AbstractCegarLoop]: Abstraction has 1472 states and 2179 transitions. [2020-12-23 09:32:39,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:39,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2179 transitions. [2020-12-23 09:32:39,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 09:32:39,347 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:39,347 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:39,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 09:32:39,348 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:39,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:39,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1686605951, now seen corresponding path program 1 times [2020-12-23 09:32:39,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:39,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209624914] [2020-12-23 09:32:39,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:39,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:39,403 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 09:32:39,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209624914] [2020-12-23 09:32:39,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:39,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:32:39,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884966457] [2020-12-23 09:32:39,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:32:39,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:39,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:32:39,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:32:39,406 INFO L87 Difference]: Start difference. First operand 1472 states and 2179 transitions. Second operand 3 states. [2020-12-23 09:32:39,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:39,558 INFO L93 Difference]: Finished difference Result 2922 states and 4326 transitions. [2020-12-23 09:32:39,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:32:39,561 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-23 09:32:39,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:39,570 INFO L225 Difference]: With dead ends: 2922 [2020-12-23 09:32:39,570 INFO L226 Difference]: Without dead ends: 1472 [2020-12-23 09:32:39,575 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 09:32:39,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2020-12-23 09:32:39,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1472. [2020-12-23 09:32:39,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1472 states. [2020-12-23 09:32:39,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2153 transitions. [2020-12-23 09:32:39,703 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2153 transitions. Word has length 105 [2020-12-23 09:32:39,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:39,703 INFO L481 AbstractCegarLoop]: Abstraction has 1472 states and 2153 transitions. [2020-12-23 09:32:39,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:32:39,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2153 transitions. [2020-12-23 09:32:39,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 09:32:39,706 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:39,706 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:39,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 09:32:39,707 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:39,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:39,708 INFO L82 PathProgramCache]: Analyzing trace with hash -192524995, now seen corresponding path program 1 times [2020-12-23 09:32:39,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:39,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834978088] [2020-12-23 09:32:39,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:39,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:39,787 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 09:32:39,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834978088] [2020-12-23 09:32:39,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:39,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:39,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303800034] [2020-12-23 09:32:39,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:39,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:39,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:39,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:39,792 INFO L87 Difference]: Start difference. First operand 1472 states and 2153 transitions. Second operand 4 states. [2020-12-23 09:32:40,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:40,101 INFO L93 Difference]: Finished difference Result 3514 states and 5137 transitions. [2020-12-23 09:32:40,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:40,102 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-23 09:32:40,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:40,114 INFO L225 Difference]: With dead ends: 3514 [2020-12-23 09:32:40,114 INFO L226 Difference]: Without dead ends: 2065 [2020-12-23 09:32:40,117 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 09:32:40,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2065 states. [2020-12-23 09:32:40,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2065 to 1472. [2020-12-23 09:32:40,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1472 states. [2020-12-23 09:32:40,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2150 transitions. [2020-12-23 09:32:40,225 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2150 transitions. Word has length 105 [2020-12-23 09:32:40,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:40,225 INFO L481 AbstractCegarLoop]: Abstraction has 1472 states and 2150 transitions. [2020-12-23 09:32:40,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:40,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2150 transitions. [2020-12-23 09:32:40,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 09:32:40,227 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:40,227 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:40,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 09:32:40,228 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:40,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:40,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1132331199, now seen corresponding path program 1 times [2020-12-23 09:32:40,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:40,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861736869] [2020-12-23 09:32:40,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:40,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:40,287 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 09:32:40,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861736869] [2020-12-23 09:32:40,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:40,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:40,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634136472] [2020-12-23 09:32:40,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:40,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:40,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:40,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:40,290 INFO L87 Difference]: Start difference. First operand 1472 states and 2150 transitions. Second operand 4 states. [2020-12-23 09:32:40,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:40,593 INFO L93 Difference]: Finished difference Result 3512 states and 5127 transitions. [2020-12-23 09:32:40,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:40,594 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-23 09:32:40,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:40,605 INFO L225 Difference]: With dead ends: 3512 [2020-12-23 09:32:40,606 INFO L226 Difference]: Without dead ends: 2064 [2020-12-23 09:32:40,609 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 09:32:40,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2064 states. [2020-12-23 09:32:40,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2064 to 1472. [2020-12-23 09:32:40,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1472 states. [2020-12-23 09:32:40,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2147 transitions. [2020-12-23 09:32:40,711 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2147 transitions. Word has length 105 [2020-12-23 09:32:40,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:40,712 INFO L481 AbstractCegarLoop]: Abstraction has 1472 states and 2147 transitions. [2020-12-23 09:32:40,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:40,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2147 transitions. [2020-12-23 09:32:40,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 09:32:40,713 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:40,713 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:40,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 09:32:40,714 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:40,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:40,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1595878147, now seen corresponding path program 1 times [2020-12-23 09:32:40,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:40,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618964307] [2020-12-23 09:32:40,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:40,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:40,763 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 09:32:40,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618964307] [2020-12-23 09:32:40,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:40,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:40,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186708211] [2020-12-23 09:32:40,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:40,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:40,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:40,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:40,766 INFO L87 Difference]: Start difference. First operand 1472 states and 2147 transitions. Second operand 4 states. [2020-12-23 09:32:41,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:41,032 INFO L93 Difference]: Finished difference Result 3510 states and 5117 transitions. [2020-12-23 09:32:41,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:41,032 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-23 09:32:41,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:41,042 INFO L225 Difference]: With dead ends: 3510 [2020-12-23 09:32:41,042 INFO L226 Difference]: Without dead ends: 2063 [2020-12-23 09:32:41,050 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 09:32:41,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2063 states. [2020-12-23 09:32:41,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2063 to 1472. [2020-12-23 09:32:41,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1472 states. [2020-12-23 09:32:41,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2144 transitions. [2020-12-23 09:32:41,157 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2144 transitions. Word has length 105 [2020-12-23 09:32:41,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:41,157 INFO L481 AbstractCegarLoop]: Abstraction has 1472 states and 2144 transitions. [2020-12-23 09:32:41,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:41,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2144 transitions. [2020-12-23 09:32:41,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 09:32:41,159 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:41,159 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:41,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 09:32:41,159 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:41,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:41,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1641251071, now seen corresponding path program 1 times [2020-12-23 09:32:41,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:41,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142922489] [2020-12-23 09:32:41,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:41,215 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 09:32:41,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142922489] [2020-12-23 09:32:41,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:41,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:41,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365124420] [2020-12-23 09:32:41,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:41,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:41,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:41,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:41,217 INFO L87 Difference]: Start difference. First operand 1472 states and 2144 transitions. Second operand 4 states. [2020-12-23 09:32:41,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:41,511 INFO L93 Difference]: Finished difference Result 3508 states and 5107 transitions. [2020-12-23 09:32:41,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:41,512 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-23 09:32:41,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:41,539 INFO L225 Difference]: With dead ends: 3508 [2020-12-23 09:32:41,541 INFO L226 Difference]: Without dead ends: 2062 [2020-12-23 09:32:41,548 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 09:32:41,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2062 states. [2020-12-23 09:32:41,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2062 to 1472. [2020-12-23 09:32:41,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1472 states. [2020-12-23 09:32:41,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2141 transitions. [2020-12-23 09:32:41,675 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2141 transitions. Word has length 105 [2020-12-23 09:32:41,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:41,676 INFO L481 AbstractCegarLoop]: Abstraction has 1472 states and 2141 transitions. [2020-12-23 09:32:41,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:41,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2141 transitions. [2020-12-23 09:32:41,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 09:32:41,678 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:41,678 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:41,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 09:32:41,678 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:41,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:41,679 INFO L82 PathProgramCache]: Analyzing trace with hash 498748605, now seen corresponding path program 1 times [2020-12-23 09:32:41,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:41,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002397543] [2020-12-23 09:32:41,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:41,728 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 09:32:41,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002397543] [2020-12-23 09:32:41,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:41,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:41,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278620078] [2020-12-23 09:32:41,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:41,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:41,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:41,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:41,731 INFO L87 Difference]: Start difference. First operand 1472 states and 2141 transitions. Second operand 4 states. [2020-12-23 09:32:42,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:42,001 INFO L93 Difference]: Finished difference Result 3506 states and 5097 transitions. [2020-12-23 09:32:42,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:42,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-23 09:32:42,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:42,006 INFO L225 Difference]: With dead ends: 3506 [2020-12-23 09:32:42,007 INFO L226 Difference]: Without dead ends: 2061 [2020-12-23 09:32:42,011 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 09:32:42,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2061 states. [2020-12-23 09:32:42,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2061 to 1472. [2020-12-23 09:32:42,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1472 states. [2020-12-23 09:32:42,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2138 transitions. [2020-12-23 09:32:42,134 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2138 transitions. Word has length 105 [2020-12-23 09:32:42,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:42,135 INFO L481 AbstractCegarLoop]: Abstraction has 1472 states and 2138 transitions. [2020-12-23 09:32:42,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:42,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2138 transitions. [2020-12-23 09:32:42,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 09:32:42,136 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:42,136 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:42,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 09:32:42,137 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:42,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:42,137 INFO L82 PathProgramCache]: Analyzing trace with hash 738988351, now seen corresponding path program 1 times [2020-12-23 09:32:42,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:42,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981144508] [2020-12-23 09:32:42,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:42,186 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 09:32:42,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981144508] [2020-12-23 09:32:42,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:42,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:32:42,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21615688] [2020-12-23 09:32:42,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:32:42,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:42,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:32:42,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:32:42,189 INFO L87 Difference]: Start difference. First operand 1472 states and 2138 transitions. Second operand 5 states. [2020-12-23 09:32:42,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:42,769 INFO L93 Difference]: Finished difference Result 5618 states and 8152 transitions. [2020-12-23 09:32:42,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:32:42,770 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-12-23 09:32:42,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:42,779 INFO L225 Difference]: With dead ends: 5618 [2020-12-23 09:32:42,779 INFO L226 Difference]: Without dead ends: 4180 [2020-12-23 09:32:42,783 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 09:32:42,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4180 states. [2020-12-23 09:32:42,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4180 to 1532. [2020-12-23 09:32:42,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1532 states. [2020-12-23 09:32:42,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 2198 transitions. [2020-12-23 09:32:42,945 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 2198 transitions. Word has length 105 [2020-12-23 09:32:42,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:42,945 INFO L481 AbstractCegarLoop]: Abstraction has 1532 states and 2198 transitions. [2020-12-23 09:32:42,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:32:42,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 2198 transitions. [2020-12-23 09:32:42,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 09:32:42,947 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:42,947 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:42,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 09:32:42,947 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:42,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:42,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1172054207, now seen corresponding path program 1 times [2020-12-23 09:32:42,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:42,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956202028] [2020-12-23 09:32:42,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:42,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:43,015 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 09:32:43,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956202028] [2020-12-23 09:32:43,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:43,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:43,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765413619] [2020-12-23 09:32:43,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:43,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:43,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:43,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:43,019 INFO L87 Difference]: Start difference. First operand 1532 states and 2198 transitions. Second operand 4 states. [2020-12-23 09:32:43,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:43,583 INFO L93 Difference]: Finished difference Result 5626 states and 8053 transitions. [2020-12-23 09:32:43,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:43,584 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-23 09:32:43,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:43,593 INFO L225 Difference]: With dead ends: 5626 [2020-12-23 09:32:43,593 INFO L226 Difference]: Without dead ends: 4123 [2020-12-23 09:32:43,597 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 09:32:43,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4123 states. [2020-12-23 09:32:43,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4123 to 3907. [2020-12-23 09:32:43,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3907 states. [2020-12-23 09:32:43,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3907 states to 3907 states and 5545 transitions. [2020-12-23 09:32:43,966 INFO L78 Accepts]: Start accepts. Automaton has 3907 states and 5545 transitions. Word has length 105 [2020-12-23 09:32:43,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:43,967 INFO L481 AbstractCegarLoop]: Abstraction has 3907 states and 5545 transitions. [2020-12-23 09:32:43,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:43,967 INFO L276 IsEmpty]: Start isEmpty. Operand 3907 states and 5545 transitions. [2020-12-23 09:32:43,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-12-23 09:32:43,969 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:43,969 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:43,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 09:32:43,970 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:43,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:43,970 INFO L82 PathProgramCache]: Analyzing trace with hash -104840646, now seen corresponding path program 1 times [2020-12-23 09:32:43,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:43,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582011488] [2020-12-23 09:32:43,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:44,016 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 09:32:44,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582011488] [2020-12-23 09:32:44,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:44,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:32:44,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585503110] [2020-12-23 09:32:44,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:32:44,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:44,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:32:44,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:32:44,020 INFO L87 Difference]: Start difference. First operand 3907 states and 5545 transitions. Second operand 5 states. [2020-12-23 09:32:44,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:44,842 INFO L93 Difference]: Finished difference Result 10274 states and 14632 transitions. [2020-12-23 09:32:44,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:32:44,843 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-12-23 09:32:44,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:44,859 INFO L225 Difference]: With dead ends: 10274 [2020-12-23 09:32:44,859 INFO L226 Difference]: Without dead ends: 6406 [2020-12-23 09:32:44,866 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 09:32:44,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6406 states. [2020-12-23 09:32:45,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6406 to 3964. [2020-12-23 09:32:45,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3964 states. [2020-12-23 09:32:45,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3964 states to 3964 states and 5569 transitions. [2020-12-23 09:32:45,265 INFO L78 Accepts]: Start accepts. Automaton has 3964 states and 5569 transitions. Word has length 123 [2020-12-23 09:32:45,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:45,265 INFO L481 AbstractCegarLoop]: Abstraction has 3964 states and 5569 transitions. [2020-12-23 09:32:45,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:32:45,265 INFO L276 IsEmpty]: Start isEmpty. Operand 3964 states and 5569 transitions. [2020-12-23 09:32:45,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-12-23 09:32:45,268 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:45,268 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:45,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-23 09:32:45,269 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:45,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:45,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1771642172, now seen corresponding path program 1 times [2020-12-23 09:32:45,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:45,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367767493] [2020-12-23 09:32:45,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:45,379 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 09:32:45,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367767493] [2020-12-23 09:32:45,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:45,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:32:45,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774291200] [2020-12-23 09:32:45,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:32:45,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:45,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:32:45,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:32:45,383 INFO L87 Difference]: Start difference. First operand 3964 states and 5569 transitions. Second operand 5 states. [2020-12-23 09:32:46,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:46,005 INFO L93 Difference]: Finished difference Result 8852 states and 12415 transitions. [2020-12-23 09:32:46,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:32:46,006 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-12-23 09:32:46,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:46,016 INFO L225 Difference]: With dead ends: 8852 [2020-12-23 09:32:46,016 INFO L226 Difference]: Without dead ends: 4934 [2020-12-23 09:32:46,021 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 09:32:46,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4934 states. [2020-12-23 09:32:46,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4934 to 3970. [2020-12-23 09:32:46,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3970 states. [2020-12-23 09:32:46,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3970 states to 3970 states and 5525 transitions. [2020-12-23 09:32:46,385 INFO L78 Accepts]: Start accepts. Automaton has 3970 states and 5525 transitions. Word has length 123 [2020-12-23 09:32:46,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:46,386 INFO L481 AbstractCegarLoop]: Abstraction has 3970 states and 5525 transitions. [2020-12-23 09:32:46,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:32:46,386 INFO L276 IsEmpty]: Start isEmpty. Operand 3970 states and 5525 transitions. [2020-12-23 09:32:46,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-12-23 09:32:46,388 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:46,388 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:46,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-23 09:32:46,389 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:46,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:46,389 INFO L82 PathProgramCache]: Analyzing trace with hash 2011881918, now seen corresponding path program 1 times [2020-12-23 09:32:46,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:46,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405649984] [2020-12-23 09:32:46,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:46,440 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 09:32:46,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405649984] [2020-12-23 09:32:46,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:46,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:46,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349012146] [2020-12-23 09:32:46,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:46,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:46,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:46,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:46,443 INFO L87 Difference]: Start difference. First operand 3970 states and 5525 transitions. Second operand 4 states. [2020-12-23 09:32:47,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:47,630 INFO L93 Difference]: Finished difference Result 14881 states and 20689 transitions. [2020-12-23 09:32:47,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:47,630 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-12-23 09:32:47,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:47,652 INFO L225 Difference]: With dead ends: 14881 [2020-12-23 09:32:47,652 INFO L226 Difference]: Without dead ends: 10959 [2020-12-23 09:32:47,660 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 09:32:47,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10959 states. [2020-12-23 09:32:48,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10959 to 10485. [2020-12-23 09:32:48,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10485 states. [2020-12-23 09:32:48,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10485 states to 10485 states and 14462 transitions. [2020-12-23 09:32:48,589 INFO L78 Accepts]: Start accepts. Automaton has 10485 states and 14462 transitions. Word has length 123 [2020-12-23 09:32:48,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:48,590 INFO L481 AbstractCegarLoop]: Abstraction has 10485 states and 14462 transitions. [2020-12-23 09:32:48,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:48,590 INFO L276 IsEmpty]: Start isEmpty. Operand 10485 states and 14462 transitions. [2020-12-23 09:32:48,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-23 09:32:48,592 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:48,593 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:48,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-23 09:32:48,593 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:48,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:48,594 INFO L82 PathProgramCache]: Analyzing trace with hash 157425991, now seen corresponding path program 1 times [2020-12-23 09:32:48,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:48,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156052015] [2020-12-23 09:32:48,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:48,642 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 09:32:48,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156052015] [2020-12-23 09:32:48,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:48,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:32:48,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117530182] [2020-12-23 09:32:48,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:32:48,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:48,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:32:48,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:32:48,644 INFO L87 Difference]: Start difference. First operand 10485 states and 14462 transitions. Second operand 5 states. [2020-12-23 09:32:50,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:50,237 INFO L93 Difference]: Finished difference Result 27008 states and 37512 transitions. [2020-12-23 09:32:50,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:32:50,237 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-12-23 09:32:50,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:50,277 INFO L225 Difference]: With dead ends: 27008 [2020-12-23 09:32:50,277 INFO L226 Difference]: Without dead ends: 16575 [2020-12-23 09:32:50,292 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 09:32:50,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16575 states. [2020-12-23 09:32:51,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16575 to 10638. [2020-12-23 09:32:51,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10638 states. [2020-12-23 09:32:51,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10638 states to 10638 states and 14528 transitions. [2020-12-23 09:32:51,306 INFO L78 Accepts]: Start accepts. Automaton has 10638 states and 14528 transitions. Word has length 127 [2020-12-23 09:32:51,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:51,306 INFO L481 AbstractCegarLoop]: Abstraction has 10638 states and 14528 transitions. [2020-12-23 09:32:51,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:32:51,307 INFO L276 IsEmpty]: Start isEmpty. Operand 10638 states and 14528 transitions. [2020-12-23 09:32:51,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-23 09:32:51,309 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:51,309 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:51,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-23 09:32:51,310 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:51,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:51,310 INFO L82 PathProgramCache]: Analyzing trace with hash 184491593, now seen corresponding path program 1 times [2020-12-23 09:32:51,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:51,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641019086] [2020-12-23 09:32:51,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:51,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:51,372 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 09:32:51,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641019086] [2020-12-23 09:32:51,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:51,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:51,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784228201] [2020-12-23 09:32:51,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:51,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:51,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:51,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:51,374 INFO L87 Difference]: Start difference. First operand 10638 states and 14528 transitions. Second operand 4 states. [2020-12-23 09:32:53,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:53,644 INFO L93 Difference]: Finished difference Result 40139 states and 54807 transitions. [2020-12-23 09:32:53,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:53,645 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-12-23 09:32:53,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:53,694 INFO L225 Difference]: With dead ends: 40139 [2020-12-23 09:32:53,694 INFO L226 Difference]: Without dead ends: 29555 [2020-12-23 09:32:53,712 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 09:32:53,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29555 states. [2020-12-23 09:32:56,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29555 to 28475. [2020-12-23 09:32:56,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28475 states. [2020-12-23 09:32:56,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28475 states to 28475 states and 38601 transitions. [2020-12-23 09:32:56,347 INFO L78 Accepts]: Start accepts. Automaton has 28475 states and 38601 transitions. Word has length 127 [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 28475 states and 38601 transitions. [2020-12-23 09:32:56,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:56,347 INFO L276 IsEmpty]: Start isEmpty. Operand 28475 states and 38601 transitions. [2020-12-23 09:32:56,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-23 09:32:56,352 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:56,352 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:56,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-23 09:32:56,353 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:56,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:56,353 INFO L82 PathProgramCache]: Analyzing trace with hash -88712638, now seen corresponding path program 1 times [2020-12-23 09:32:56,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:56,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372919328] [2020-12-23 09:32:56,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:56,366 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 [372919328] [2020-12-23 09:32:56,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:56,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:32:56,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125990730] [2020-12-23 09:32:56,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:32:56,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:56,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:32:56,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:32:56,411 INFO L87 Difference]: Start difference. First operand 28475 states and 38601 transitions. Second operand 5 states. [2020-12-23 09:32:59,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:59,995 INFO L93 Difference]: Finished difference Result 72614 states and 99223 transitions. [2020-12-23 09:32:59,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:32:59,996 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-12-23 09:32:59,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:00,081 INFO L225 Difference]: With dead ends: 72614 [2020-12-23 09:33:00,081 INFO L226 Difference]: Without dead ends: 44197 [2020-12-23 09:33:00,113 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 09:33:00,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44197 states. [2020-12-23 09:33:02,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44197 to 28886. [2020-12-23 09:33:02,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28886 states. [2020-12-23 09:33:02,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28886 states to 28886 states and 38781 transitions. [2020-12-23 09:33:02,728 INFO L78 Accepts]: Start accepts. Automaton has 28886 states and 38781 transitions. Word has length 131 [2020-12-23 09:33:02,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:02,728 INFO L481 AbstractCegarLoop]: Abstraction has 28886 states and 38781 transitions. [2020-12-23 09:33:02,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:33:02,728 INFO L276 IsEmpty]: Start isEmpty. Operand 28886 states and 38781 transitions. [2020-12-23 09:33:02,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-23 09:33:02,731 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:02,732 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:33:02,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-23 09:33:02,732 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:02,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:02,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1645391812, now seen corresponding path program 1 times [2020-12-23 09:33:02,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:02,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874168297] [2020-12-23 09:33:02,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:02,787 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 09:33:02,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874168297] [2020-12-23 09:33:02,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:02,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:33:02,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017086099] [2020-12-23 09:33:02,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:33:02,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:02,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:33:02,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:33:02,790 INFO L87 Difference]: Start difference. First operand 28886 states and 38781 transitions. Second operand 3 states. [2020-12-23 09:33:06,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:06,675 INFO L93 Difference]: Finished difference Result 83040 states and 111616 transitions. [2020-12-23 09:33:06,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:33:06,676 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 131 [2020-12-23 09:33:06,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:06,728 INFO L225 Difference]: With dead ends: 83040 [2020-12-23 09:33:06,728 INFO L226 Difference]: Without dead ends: 54221 [2020-12-23 09:33:06,756 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 09:33:06,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54221 states. [2020-12-23 09:33:11,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54221 to 54109. [2020-12-23 09:33:11,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54109 states. [2020-12-23 09:33:11,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54109 states to 54109 states and 72438 transitions. [2020-12-23 09:33:11,249 INFO L78 Accepts]: Start accepts. Automaton has 54109 states and 72438 transitions. Word has length 131 [2020-12-23 09:33:11,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:11,249 INFO L481 AbstractCegarLoop]: Abstraction has 54109 states and 72438 transitions. [2020-12-23 09:33:11,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:33:11,250 INFO L276 IsEmpty]: Start isEmpty. Operand 54109 states and 72438 transitions. [2020-12-23 09:33:11,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-23 09:33:11,255 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:11,255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:33:11,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-23 09:33:11,255 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:11,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:11,256 INFO L82 PathProgramCache]: Analyzing trace with hash -512081211, now seen corresponding path program 1 times [2020-12-23 09:33:11,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:11,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883744678] [2020-12-23 09:33:11,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:11,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:11,319 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 09:33:11,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883744678] [2020-12-23 09:33:11,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:11,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:33:11,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357129095] [2020-12-23 09:33:11,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:33:11,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:11,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:33:11,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:33:11,321 INFO L87 Difference]: Start difference. First operand 54109 states and 72438 transitions. Second operand 5 states. [2020-12-23 09:33:18,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:18,622 INFO L93 Difference]: Finished difference Result 146256 states and 197672 transitions. [2020-12-23 09:33:18,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:33:18,622 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-12-23 09:33:18,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:18,718 INFO L225 Difference]: With dead ends: 146256 [2020-12-23 09:33:18,718 INFO L226 Difference]: Without dead ends: 92218 [2020-12-23 09:33:18,748 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 09:33:18,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92218 states. [2020-12-23 09:33:23,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92218 to 55210. [2020-12-23 09:33:23,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55210 states. [2020-12-23 09:33:23,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55210 states to 55210 states and 73225 transitions. [2020-12-23 09:33:23,834 INFO L78 Accepts]: Start accepts. Automaton has 55210 states and 73225 transitions. Word has length 131 [2020-12-23 09:33:23,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:23,834 INFO L481 AbstractCegarLoop]: Abstraction has 55210 states and 73225 transitions. [2020-12-23 09:33:23,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:33:23,834 INFO L276 IsEmpty]: Start isEmpty. Operand 55210 states and 73225 transitions. [2020-12-23 09:33:23,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-23 09:33:23,839 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:23,840 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:33:23,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-23 09:33:23,840 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:23,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:23,841 INFO L82 PathProgramCache]: Analyzing trace with hash -929477817, now seen corresponding path program 1 times [2020-12-23 09:33:23,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:23,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895436522] [2020-12-23 09:33:23,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:23,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:23,890 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 09:33:23,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895436522] [2020-12-23 09:33:23,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:23,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:33:23,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354595104] [2020-12-23 09:33:23,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:33:23,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:23,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:33:23,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:33:23,892 INFO L87 Difference]: Start difference. First operand 55210 states and 73225 transitions. Second operand 5 states. [2020-12-23 09:33:34,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:34,222 INFO L93 Difference]: Finished difference Result 178933 states and 240629 transitions. [2020-12-23 09:33:34,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:33:34,223 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-12-23 09:33:34,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:34,380 INFO L225 Difference]: With dead ends: 178933 [2020-12-23 09:33:34,380 INFO L226 Difference]: Without dead ends: 123801 [2020-12-23 09:33:34,423 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 09:33:34,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123801 states. [2020-12-23 09:33:40,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123801 to 57253. [2020-12-23 09:33:40,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57253 states. [2020-12-23 09:33:40,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57253 states to 57253 states and 75268 transitions. [2020-12-23 09:33:40,267 INFO L78 Accepts]: Start accepts. Automaton has 57253 states and 75268 transitions. Word has length 131 [2020-12-23 09:33:40,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:40,267 INFO L481 AbstractCegarLoop]: Abstraction has 57253 states and 75268 transitions. [2020-12-23 09:33:40,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:33:40,267 INFO L276 IsEmpty]: Start isEmpty. Operand 57253 states and 75268 transitions. [2020-12-23 09:33:40,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-23 09:33:40,272 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:40,273 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:33:40,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-23 09:33:40,273 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:40,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:40,274 INFO L82 PathProgramCache]: Analyzing trace with hash 331439433, now seen corresponding path program 1 times [2020-12-23 09:33:40,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:40,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971141762] [2020-12-23 09:33:40,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:40,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:40,328 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 09:33:40,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971141762] [2020-12-23 09:33:40,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:40,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:40,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437839980] [2020-12-23 09:33:40,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:40,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:40,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:40,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:40,330 INFO L87 Difference]: Start difference. First operand 57253 states and 75268 transitions. Second operand 4 states. [2020-12-23 09:33:49,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:49,187 INFO L93 Difference]: Finished difference Result 148934 states and 194504 transitions. [2020-12-23 09:33:49,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:49,188 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-12-23 09:33:49,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:49,281 INFO L225 Difference]: With dead ends: 148934 [2020-12-23 09:33:49,281 INFO L226 Difference]: Without dead ends: 91764 [2020-12-23 09:33:49,322 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 09:33:49,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91764 states. [2020-12-23 09:33:55,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91764 to 65659. [2020-12-23 09:33:55,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65659 states. [2020-12-23 09:33:55,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65659 states to 65659 states and 85074 transitions. [2020-12-23 09:33:55,963 INFO L78 Accepts]: Start accepts. Automaton has 65659 states and 85074 transitions. Word has length 131 [2020-12-23 09:33:55,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:55,964 INFO L481 AbstractCegarLoop]: Abstraction has 65659 states and 85074 transitions. [2020-12-23 09:33:55,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:55,964 INFO L276 IsEmpty]: Start isEmpty. Operand 65659 states and 85074 transitions. [2020-12-23 09:33:55,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-23 09:33:55,969 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:55,969 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:33:55,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-23 09:33:55,969 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:55,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:55,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1718224843, now seen corresponding path program 1 times [2020-12-23 09:33:55,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:55,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597961060] [2020-12-23 09:33:55,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:55,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:56,028 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 09:33:56,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597961060] [2020-12-23 09:33:56,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:56,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:56,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323840732] [2020-12-23 09:33:56,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:56,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:56,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:56,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:56,030 INFO L87 Difference]: Start difference. First operand 65659 states and 85074 transitions. Second operand 4 states. [2020-12-23 09:34:06,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:34:06,172 INFO L93 Difference]: Finished difference Result 161422 states and 208877 transitions. [2020-12-23 09:34:06,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:34:06,172 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-12-23 09:34:06,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:34:06,286 INFO L225 Difference]: With dead ends: 161422 [2020-12-23 09:34:06,287 INFO L226 Difference]: Without dead ends: 95918 [2020-12-23 09:34:06,332 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 09:34:06,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95918 states. [2020-12-23 09:34:12,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95918 to 65659. [2020-12-23 09:34:12,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65659 states. [2020-12-23 09:34:13,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65659 states to 65659 states and 84857 transitions. [2020-12-23 09:34:13,034 INFO L78 Accepts]: Start accepts. Automaton has 65659 states and 84857 transitions. Word has length 131 [2020-12-23 09:34:13,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:34:13,034 INFO L481 AbstractCegarLoop]: Abstraction has 65659 states and 84857 transitions. [2020-12-23 09:34:13,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:34:13,034 INFO L276 IsEmpty]: Start isEmpty. Operand 65659 states and 84857 transitions. [2020-12-23 09:34:13,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-23 09:34:13,039 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:34:13,040 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:34:13,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-23 09:34:13,040 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:34:13,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:34:13,040 INFO L82 PathProgramCache]: Analyzing trace with hash -2132841779, now seen corresponding path program 1 times [2020-12-23 09:34:13,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:34:13,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308519039] [2020-12-23 09:34:13,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:34:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:34:13,101 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 09:34:13,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308519039] [2020-12-23 09:34:13,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:34:13,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:34:13,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643730966] [2020-12-23 09:34:13,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:34:13,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:34:13,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:34:13,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:34:13,103 INFO L87 Difference]: Start difference. First operand 65659 states and 84857 transitions. Second operand 4 states. [2020-12-23 09:34:23,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:34:23,001 INFO L93 Difference]: Finished difference Result 161419 states and 208386 transitions. [2020-12-23 09:34:23,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:34:23,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-12-23 09:34:23,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:34:23,239 INFO L225 Difference]: With dead ends: 161419 [2020-12-23 09:34:23,239 INFO L226 Difference]: Without dead ends: 95918 [2020-12-23 09:34:23,278 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 09:34:23,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95918 states. [2020-12-23 09:34:30,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95918 to 65659. [2020-12-23 09:34:30,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65659 states. [2020-12-23 09:34:30,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65659 states to 65659 states and 84640 transitions. [2020-12-23 09:34:30,124 INFO L78 Accepts]: Start accepts. Automaton has 65659 states and 84640 transitions. Word has length 131 [2020-12-23 09:34:30,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:34:30,124 INFO L481 AbstractCegarLoop]: Abstraction has 65659 states and 84640 transitions. [2020-12-23 09:34:30,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:34:30,124 INFO L276 IsEmpty]: Start isEmpty. Operand 65659 states and 84640 transitions. [2020-12-23 09:34:30,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-23 09:34:30,129 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:34:30,129 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:34:30,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-23 09:34:30,129 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:34:30,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:34:30,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1681045259, now seen corresponding path program 1 times [2020-12-23 09:34:30,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:34:30,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500557869] [2020-12-23 09:34:30,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:34:30,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:34:30,186 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 09:34:30,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500557869] [2020-12-23 09:34:30,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:34:30,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:34:30,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958725565] [2020-12-23 09:34:30,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:34:30,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:34:30,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:34:30,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:34:30,188 INFO L87 Difference]: Start difference. First operand 65659 states and 84640 transitions. Second operand 4 states. [2020-12-23 09:34:40,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:34:40,560 INFO L93 Difference]: Finished difference Result 161418 states and 207897 transitions. [2020-12-23 09:34:40,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:34:40,560 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-12-23 09:34:40,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:34:40,660 INFO L225 Difference]: With dead ends: 161418 [2020-12-23 09:34:40,660 INFO L226 Difference]: Without dead ends: 95918 [2020-12-23 09:34:40,705 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 09:34:40,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95918 states. [2020-12-23 09:34:47,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95918 to 65659. [2020-12-23 09:34:47,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65659 states. [2020-12-23 09:34:47,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65659 states to 65659 states and 84423 transitions. [2020-12-23 09:34:47,822 INFO L78 Accepts]: Start accepts. Automaton has 65659 states and 84423 transitions. Word has length 131 [2020-12-23 09:34:47,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:34:47,822 INFO L481 AbstractCegarLoop]: Abstraction has 65659 states and 84423 transitions. [2020-12-23 09:34:47,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:34:47,822 INFO L276 IsEmpty]: Start isEmpty. Operand 65659 states and 84423 transitions. [2020-12-23 09:34:47,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-23 09:34:47,826 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:34:47,826 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:34:47,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-23 09:34:47,827 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:34:47,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:34:47,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1665526541, now seen corresponding path program 1 times [2020-12-23 09:34:47,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:34:47,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149042072] [2020-12-23 09:34:47,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:34:47,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:34:47,892 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 09:34:47,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149042072] [2020-12-23 09:34:47,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:34:47,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:34:47,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5781462] [2020-12-23 09:34:47,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:34:47,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:34:47,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:34:47,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:34:47,894 INFO L87 Difference]: Start difference. First operand 65659 states and 84423 transitions. Second operand 4 states. [2020-12-23 09:34:58,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:34:58,103 INFO L93 Difference]: Finished difference Result 159009 states and 204395 transitions. [2020-12-23 09:34:58,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:34:58,103 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-12-23 09:34:58,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:34:58,201 INFO L225 Difference]: With dead ends: 159009 [2020-12-23 09:34:58,201 INFO L226 Difference]: Without dead ends: 93510 [2020-12-23 09:34:58,445 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 09:34:58,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93510 states.