/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.10.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 09:33:40,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 09:33:40,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 09:33:40,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 09:33:40,435 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 09:33:40,439 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 09:33:40,443 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 09:33:40,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 09:33:40,451 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 09:33:40,457 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 09:33:40,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 09:33:40,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 09:33:40,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 09:33:40,465 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 09:33:40,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 09:33:40,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 09:33:40,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 09:33:40,487 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 09:33:40,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 09:33:40,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 09:33:40,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 09:33:40,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 09:33:40,505 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 09:33:40,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 09:33:40,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 09:33:40,509 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 09:33:40,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 09:33:40,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 09:33:40,511 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 09:33:40,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 09:33:40,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 09:33:40,513 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 09:33:40,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 09:33:40,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 09:33:40,516 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 09:33:40,516 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 09:33:40,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 09:33:40,517 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 09:33:40,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 09:33:40,519 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 09:33:40,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 09:33:40,521 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 09:33:40,550 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 09:33:40,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 09:33:40,552 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 09:33:40,552 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 09:33:40,552 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 09:33:40,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 09:33:40,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 09:33:40,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 09:33:40,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 09:33:40,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 09:33:40,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 09:33:40,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 09:33:40,554 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 09:33:40,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 09:33:40,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 09:33:40,555 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 09:33:40,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 09:33:40,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 09:33:40,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 09:33:40,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 09:33:40,556 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 09:33:40,556 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 09:33:40,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 09:33:40,557 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 09:33:40,557 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 09:33:40,557 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 09:33:40,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 09:33:40,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 09:33:40,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 09:33:40,968 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 09:33:40,969 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 09:33:40,970 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.10.cil-1.c [2020-12-23 09:33:41,045 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ddecce822/a3e14dc56ce8468ba6be8b8d7188fb34/FLAGe6fecc71b [2020-12-23 09:33:41,764 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 09:33:41,765 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.10.cil-1.c [2020-12-23 09:33:41,787 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ddecce822/a3e14dc56ce8468ba6be8b8d7188fb34/FLAGe6fecc71b [2020-12-23 09:33:42,037 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ddecce822/a3e14dc56ce8468ba6be8b8d7188fb34 [2020-12-23 09:33:42,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 09:33:42,044 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 09:33:42,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 09:33:42,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 09:33:42,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 09:33:42,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:33:42" (1/1) ... [2020-12-23 09:33:42,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14256400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:33:42, skipping insertion in model container [2020-12-23 09:33:42,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:33:42" (1/1) ... [2020-12-23 09:33:42,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 09:33:42,113 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 09:33:42,272 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.10.cil-1.c[366,379] left hand side expression in assignment: lhs: VariableLHS[~token~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~local~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t1_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t2_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t3_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t3_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t4_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t4_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t5_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t5_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t6_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t6_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_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_8~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_8~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t8_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t8_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_9~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_9~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t9_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t9_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t10_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t10_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[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~9,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~9,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~10,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~10,] 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[~t8_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t8_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t9_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t9_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t10_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t10_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__retres1~11,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~11,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~11,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~11,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~11,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~11,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~11,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~11,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~11,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~11,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~11,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~11,] 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[~tmp_ndt_9~0,] left hand side expression in assignment: lhs: VariableLHS[~t8_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp_ndt_10~0,] left hand side expression in assignment: lhs: VariableLHS[~t9_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp_ndt_11~0,] left hand side expression in assignment: lhs: VariableLHS[~t10_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[~T8_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T9_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T10_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[~E_8~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_9~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_10~0,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[~T8_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T9_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T10_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[~E_8~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_9~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_10~0,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[~tmp___7~0,] left hand side expression in assignment: lhs: VariableLHS[~t8_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___8~0,] left hand side expression in assignment: lhs: VariableLHS[~t9_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___9~0,] left hand side expression in assignment: lhs: VariableLHS[~t10_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[~T8_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T9_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T10_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[~E_8~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_9~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_10~0,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[~t8_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t9_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t10_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[~__retres1~12,] [2020-12-23 09:33:42,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:33:42,484 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 09:33:42,499 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.10.cil-1.c[366,379] left hand side expression in assignment: lhs: VariableLHS[~token~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~local~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t1_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t2_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t3_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t3_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t4_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t4_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t5_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t5_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t6_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t6_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_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_8~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_8~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t8_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t8_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_9~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_9~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t9_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t9_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t10_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t10_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[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~9,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~9,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~10,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~10,] 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[~t8_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t8_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t9_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t9_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t10_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t10_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__retres1~11,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~11,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~11,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~11,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~11,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~11,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~11,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~11,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~11,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~11,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~11,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~11,] 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[~tmp_ndt_9~0,] left hand side expression in assignment: lhs: VariableLHS[~t8_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp_ndt_10~0,] left hand side expression in assignment: lhs: VariableLHS[~t9_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp_ndt_11~0,] left hand side expression in assignment: lhs: VariableLHS[~t10_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[~T8_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T9_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T10_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[~E_8~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_9~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_10~0,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[~T8_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T9_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T10_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[~E_8~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_9~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_10~0,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[~tmp___7~0,] left hand side expression in assignment: lhs: VariableLHS[~t8_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___8~0,] left hand side expression in assignment: lhs: VariableLHS[~t9_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___9~0,] left hand side expression in assignment: lhs: VariableLHS[~t10_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[~T8_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T9_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T10_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[~E_8~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_9~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_10~0,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[~t8_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t9_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t10_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[~__retres1~12,] [2020-12-23 09:33:42,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:33:42,646 INFO L208 MainTranslator]: Completed translation [2020-12-23 09:33:42,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:33:42 WrapperNode [2020-12-23 09:33:42,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 09:33:42,648 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 09:33:42,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 09:33:42,648 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 09:33:42,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:33:42" (1/1) ... [2020-12-23 09:33:42,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:33:42" (1/1) ... [2020-12-23 09:33:42,854 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 09:33:42,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 09:33:42,855 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 09:33:42,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 09:33:42,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:33:42" (1/1) ... [2020-12-23 09:33:42,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:33:42" (1/1) ... [2020-12-23 09:33:42,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:33:42" (1/1) ... [2020-12-23 09:33:42,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:33:42" (1/1) ... [2020-12-23 09:33:42,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:33:42" (1/1) ... [2020-12-23 09:33:42,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:33:42" (1/1) ... [2020-12-23 09:33:43,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:33:42" (1/1) ... [2020-12-23 09:33:43,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 09:33:43,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 09:33:43,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 09:33:43,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 09:33:43,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:33:42" (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 09:33:43,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 09:33:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 09:33:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 09:33:43,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 09:33:45,863 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 09:33:45,864 INFO L299 CfgBuilder]: Removed 433 assume(true) statements. [2020-12-23 09:33:45,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:33:45 BoogieIcfgContainer [2020-12-23 09:33:45,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 09:33:45,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 09:33:45,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 09:33:45,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 09:33:45,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 09:33:42" (1/3) ... [2020-12-23 09:33:45,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c4b401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:33:45, skipping insertion in model container [2020-12-23 09:33:45,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:33:42" (2/3) ... [2020-12-23 09:33:45,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c4b401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:33:45, skipping insertion in model container [2020-12-23 09:33:45,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:33:45" (3/3) ... [2020-12-23 09:33:45,878 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.10.cil-1.c [2020-12-23 09:33:45,885 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 09:33:45,891 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-23 09:33:45,911 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-23 09:33:45,946 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 09:33:45,946 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 09:33:45,946 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 09:33:45,947 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 09:33:45,947 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 09:33:45,947 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 09:33:45,947 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 09:33:45,947 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 09:33:46,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states. [2020-12-23 09:33:46,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-23 09:33:46,030 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:46,031 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:33:46,032 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:46,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:46,039 INFO L82 PathProgramCache]: Analyzing trace with hash -734508672, now seen corresponding path program 1 times [2020-12-23 09:33:46,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:46,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938991472] [2020-12-23 09:33:46,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:46,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:46,354 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 09:33:46,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938991472] [2020-12-23 09:33:46,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:46,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:46,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770118694] [2020-12-23 09:33:46,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:33:46,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:46,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:33:46,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:33:46,387 INFO L87 Difference]: Start difference. First operand 1345 states. Second operand 3 states. [2020-12-23 09:33:46,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:46,553 INFO L93 Difference]: Finished difference Result 2685 states and 4073 transitions. [2020-12-23 09:33:46,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:33:46,555 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2020-12-23 09:33:46,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:46,595 INFO L225 Difference]: With dead ends: 2685 [2020-12-23 09:33:46,596 INFO L226 Difference]: Without dead ends: 1341 [2020-12-23 09:33:46,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:33:46,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2020-12-23 09:33:46,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1341. [2020-12-23 09:33:46,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1341 states. [2020-12-23 09:33:46,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 2007 transitions. [2020-12-23 09:33:46,744 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 2007 transitions. Word has length 138 [2020-12-23 09:33:46,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:46,744 INFO L481 AbstractCegarLoop]: Abstraction has 1341 states and 2007 transitions. [2020-12-23 09:33:46,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:33:46,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 2007 transitions. [2020-12-23 09:33:46,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-23 09:33:46,748 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:46,748 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:33:46,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 09:33:46,748 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:46,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:46,749 INFO L82 PathProgramCache]: Analyzing trace with hash 882931778, now seen corresponding path program 1 times [2020-12-23 09:33:46,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:46,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089108058] [2020-12-23 09:33:46,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:46,969 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 09:33:46,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089108058] [2020-12-23 09:33:46,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:46,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:46,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439126834] [2020-12-23 09:33:46,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:33:46,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:46,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:33:46,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:33:46,976 INFO L87 Difference]: Start difference. First operand 1341 states and 2007 transitions. Second operand 3 states. [2020-12-23 09:33:47,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:47,040 INFO L93 Difference]: Finished difference Result 2669 states and 3992 transitions. [2020-12-23 09:33:47,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:33:47,041 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2020-12-23 09:33:47,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:47,049 INFO L225 Difference]: With dead ends: 2669 [2020-12-23 09:33:47,049 INFO L226 Difference]: Without dead ends: 1341 [2020-12-23 09:33:47,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:33:47,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2020-12-23 09:33:47,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1341. [2020-12-23 09:33:47,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1341 states. [2020-12-23 09:33:47,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 2006 transitions. [2020-12-23 09:33:47,108 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 2006 transitions. Word has length 138 [2020-12-23 09:33:47,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:47,111 INFO L481 AbstractCegarLoop]: Abstraction has 1341 states and 2006 transitions. [2020-12-23 09:33:47,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:33:47,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 2006 transitions. [2020-12-23 09:33:47,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-23 09:33:47,118 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:47,118 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:33:47,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 09:33:47,119 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:47,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:47,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1312590084, now seen corresponding path program 1 times [2020-12-23 09:33:47,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:47,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155069864] [2020-12-23 09:33:47,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:47,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:47,255 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 09:33:47,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155069864] [2020-12-23 09:33:47,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:47,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:33:47,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44532260] [2020-12-23 09:33:47,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:33:47,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:47,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:33:47,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:33:47,259 INFO L87 Difference]: Start difference. First operand 1341 states and 2006 transitions. Second operand 3 states. [2020-12-23 09:33:47,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:47,408 INFO L93 Difference]: Finished difference Result 3795 states and 5660 transitions. [2020-12-23 09:33:47,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:33:47,409 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2020-12-23 09:33:47,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:47,424 INFO L225 Difference]: With dead ends: 3795 [2020-12-23 09:33:47,425 INFO L226 Difference]: Without dead ends: 2469 [2020-12-23 09:33:47,428 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 09:33:47,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2020-12-23 09:33:47,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 2465. [2020-12-23 09:33:47,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2465 states. [2020-12-23 09:33:47,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 3673 transitions. [2020-12-23 09:33:47,566 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 3673 transitions. Word has length 138 [2020-12-23 09:33:47,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:47,573 INFO L481 AbstractCegarLoop]: Abstraction has 2465 states and 3673 transitions. [2020-12-23 09:33:47,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:33:47,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 3673 transitions. [2020-12-23 09:33:47,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-23 09:33:47,576 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:47,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:33:47,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 09:33:47,577 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:47,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:47,579 INFO L82 PathProgramCache]: Analyzing trace with hash -2035339326, now seen corresponding path program 1 times [2020-12-23 09:33:47,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:47,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954791912] [2020-12-23 09:33:47,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:47,715 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 09:33:47,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954791912] [2020-12-23 09:33:47,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:47,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:47,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610308911] [2020-12-23 09:33:47,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:47,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:47,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:47,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:47,719 INFO L87 Difference]: Start difference. First operand 2465 states and 3673 transitions. Second operand 4 states. [2020-12-23 09:33:48,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:48,037 INFO L93 Difference]: Finished difference Result 6041 states and 8989 transitions. [2020-12-23 09:33:48,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:48,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-12-23 09:33:48,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:48,064 INFO L225 Difference]: With dead ends: 6041 [2020-12-23 09:33:48,064 INFO L226 Difference]: Without dead ends: 3592 [2020-12-23 09:33:48,070 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 09:33:48,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3592 states. [2020-12-23 09:33:48,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3592 to 2465. [2020-12-23 09:33:48,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2465 states. [2020-12-23 09:33:48,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 3670 transitions. [2020-12-23 09:33:48,316 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 3670 transitions. Word has length 138 [2020-12-23 09:33:48,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:48,316 INFO L481 AbstractCegarLoop]: Abstraction has 2465 states and 3670 transitions. [2020-12-23 09:33:48,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:48,317 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 3670 transitions. [2020-12-23 09:33:48,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-23 09:33:48,320 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:48,320 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:33:48,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 09:33:48,321 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:48,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:48,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1173505724, now seen corresponding path program 1 times [2020-12-23 09:33:48,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:48,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045559570] [2020-12-23 09:33:48,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:48,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:48,478 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 09:33:48,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045559570] [2020-12-23 09:33:48,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:48,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:48,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502203782] [2020-12-23 09:33:48,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:48,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:48,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:48,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:48,483 INFO L87 Difference]: Start difference. First operand 2465 states and 3670 transitions. Second operand 4 states. [2020-12-23 09:33:48,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:48,773 INFO L93 Difference]: Finished difference Result 6039 states and 8979 transitions. [2020-12-23 09:33:48,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:48,776 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-12-23 09:33:48,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:48,796 INFO L225 Difference]: With dead ends: 6039 [2020-12-23 09:33:48,797 INFO L226 Difference]: Without dead ends: 3591 [2020-12-23 09:33:48,803 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 09:33:48,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3591 states. [2020-12-23 09:33:49,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3591 to 2465. [2020-12-23 09:33:49,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2465 states. [2020-12-23 09:33:49,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 3667 transitions. [2020-12-23 09:33:49,015 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 3667 transitions. Word has length 138 [2020-12-23 09:33:49,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:49,016 INFO L481 AbstractCegarLoop]: Abstraction has 2465 states and 3667 transitions. [2020-12-23 09:33:49,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:49,016 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 3667 transitions. [2020-12-23 09:33:49,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-23 09:33:49,018 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:49,018 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:33:49,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 09:33:49,019 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:49,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:49,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1071052674, now seen corresponding path program 1 times [2020-12-23 09:33:49,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:49,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421348231] [2020-12-23 09:33:49,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:49,133 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 09:33:49,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421348231] [2020-12-23 09:33:49,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:49,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:49,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048949769] [2020-12-23 09:33:49,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:49,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:49,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:49,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:49,136 INFO L87 Difference]: Start difference. First operand 2465 states and 3667 transitions. Second operand 4 states. [2020-12-23 09:33:49,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:49,445 INFO L93 Difference]: Finished difference Result 6037 states and 8969 transitions. [2020-12-23 09:33:49,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:49,446 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-12-23 09:33:49,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:49,464 INFO L225 Difference]: With dead ends: 6037 [2020-12-23 09:33:49,464 INFO L226 Difference]: Without dead ends: 3590 [2020-12-23 09:33:49,470 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 09:33:49,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3590 states. [2020-12-23 09:33:49,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3590 to 2465. [2020-12-23 09:33:49,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2465 states. [2020-12-23 09:33:49,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 3664 transitions. [2020-12-23 09:33:49,655 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 3664 transitions. Word has length 138 [2020-12-23 09:33:49,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:49,655 INFO L481 AbstractCegarLoop]: Abstraction has 2465 states and 3664 transitions. [2020-12-23 09:33:49,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:49,655 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 3664 transitions. [2020-12-23 09:33:49,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-23 09:33:49,657 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:49,657 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:33:49,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 09:33:49,658 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:49,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:49,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1559099780, now seen corresponding path program 1 times [2020-12-23 09:33:49,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:49,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881501756] [2020-12-23 09:33:49,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:49,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:49,729 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 09:33:49,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881501756] [2020-12-23 09:33:49,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:49,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:33:49,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883057670] [2020-12-23 09:33:49,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:33:49,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:49,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:33:49,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:33:49,733 INFO L87 Difference]: Start difference. First operand 2465 states and 3664 transitions. Second operand 3 states. [2020-12-23 09:33:49,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:49,874 INFO L93 Difference]: Finished difference Result 4911 states and 7299 transitions. [2020-12-23 09:33:49,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:33:49,875 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2020-12-23 09:33:49,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:49,887 INFO L225 Difference]: With dead ends: 4911 [2020-12-23 09:33:49,887 INFO L226 Difference]: Without dead ends: 2465 [2020-12-23 09:33:49,893 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 09:33:49,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states. [2020-12-23 09:33:50,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 2465. [2020-12-23 09:33:50,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2465 states. [2020-12-23 09:33:50,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 3656 transitions. [2020-12-23 09:33:50,094 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 3656 transitions. Word has length 138 [2020-12-23 09:33:50,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:50,095 INFO L481 AbstractCegarLoop]: Abstraction has 2465 states and 3656 transitions. [2020-12-23 09:33:50,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:33:50,095 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 3656 transitions. [2020-12-23 09:33:50,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-23 09:33:50,097 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:50,097 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:33:50,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 09:33:50,098 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:50,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:50,099 INFO L82 PathProgramCache]: Analyzing trace with hash 741224192, now seen corresponding path program 1 times [2020-12-23 09:33:50,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:50,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575741474] [2020-12-23 09:33:50,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:50,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:50,174 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 09:33:50,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575741474] [2020-12-23 09:33:50,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:50,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:33:50,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567794966] [2020-12-23 09:33:50,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:33:50,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:50,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:33:50,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:33:50,177 INFO L87 Difference]: Start difference. First operand 2465 states and 3656 transitions. Second operand 3 states. [2020-12-23 09:33:50,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:50,352 INFO L93 Difference]: Finished difference Result 4910 states and 7282 transitions. [2020-12-23 09:33:50,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:33:50,353 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2020-12-23 09:33:50,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:50,366 INFO L225 Difference]: With dead ends: 4910 [2020-12-23 09:33:50,366 INFO L226 Difference]: Without dead ends: 2465 [2020-12-23 09:33:50,372 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 09:33:50,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states. [2020-12-23 09:33:50,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 2465. [2020-12-23 09:33:50,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2465 states. [2020-12-23 09:33:50,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 3648 transitions. [2020-12-23 09:33:50,514 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 3648 transitions. Word has length 138 [2020-12-23 09:33:50,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:50,514 INFO L481 AbstractCegarLoop]: Abstraction has 2465 states and 3648 transitions. [2020-12-23 09:33:50,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:33:50,515 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 3648 transitions. [2020-12-23 09:33:50,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-23 09:33:50,516 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:50,516 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:33:50,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 09:33:50,517 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:50,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:50,517 INFO L82 PathProgramCache]: Analyzing trace with hash 160651780, now seen corresponding path program 1 times [2020-12-23 09:33:50,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:50,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923159514] [2020-12-23 09:33:50,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:50,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:50,584 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 09:33:50,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923159514] [2020-12-23 09:33:50,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:50,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:50,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56278821] [2020-12-23 09:33:50,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:50,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:50,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:50,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:50,591 INFO L87 Difference]: Start difference. First operand 2465 states and 3648 transitions. Second operand 4 states. [2020-12-23 09:33:50,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:50,870 INFO L93 Difference]: Finished difference Result 6029 states and 8913 transitions. [2020-12-23 09:33:50,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:50,871 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-12-23 09:33:50,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:50,913 INFO L225 Difference]: With dead ends: 6029 [2020-12-23 09:33:50,913 INFO L226 Difference]: Without dead ends: 3586 [2020-12-23 09:33:50,919 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 09:33:50,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3586 states. [2020-12-23 09:33:51,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3586 to 2465. [2020-12-23 09:33:51,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2465 states. [2020-12-23 09:33:51,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 3645 transitions. [2020-12-23 09:33:51,064 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 3645 transitions. Word has length 138 [2020-12-23 09:33:51,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:51,069 INFO L481 AbstractCegarLoop]: Abstraction has 2465 states and 3645 transitions. [2020-12-23 09:33:51,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:51,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 3645 transitions. [2020-12-23 09:33:51,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-23 09:33:51,071 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:51,071 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:33:51,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 09:33:51,071 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:51,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:51,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1561350906, now seen corresponding path program 1 times [2020-12-23 09:33:51,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:51,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262037932] [2020-12-23 09:33:51,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:51,144 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 09:33:51,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262037932] [2020-12-23 09:33:51,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:51,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:51,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704510936] [2020-12-23 09:33:51,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:51,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:51,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:51,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:51,147 INFO L87 Difference]: Start difference. First operand 2465 states and 3645 transitions. Second operand 4 states. [2020-12-23 09:33:51,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:51,403 INFO L93 Difference]: Finished difference Result 6027 states and 8903 transitions. [2020-12-23 09:33:51,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:51,404 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-12-23 09:33:51,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:51,414 INFO L225 Difference]: With dead ends: 6027 [2020-12-23 09:33:51,415 INFO L226 Difference]: Without dead ends: 3585 [2020-12-23 09:33:51,420 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 09:33:51,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3585 states. [2020-12-23 09:33:51,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3585 to 2465. [2020-12-23 09:33:51,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2465 states. [2020-12-23 09:33:51,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 3642 transitions. [2020-12-23 09:33:51,578 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 3642 transitions. Word has length 138 [2020-12-23 09:33:51,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:51,579 INFO L481 AbstractCegarLoop]: Abstraction has 2465 states and 3642 transitions. [2020-12-23 09:33:51,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:51,579 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 3642 transitions. [2020-12-23 09:33:51,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-23 09:33:51,581 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:51,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:33:51,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 09:33:51,582 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:51,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:51,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1893994044, now seen corresponding path program 1 times [2020-12-23 09:33:51,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:51,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399560523] [2020-12-23 09:33:51,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:51,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:51,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:33:51,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399560523] [2020-12-23 09:33:51,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:51,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:51,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895267072] [2020-12-23 09:33:51,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:51,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:51,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:51,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:51,656 INFO L87 Difference]: Start difference. First operand 2465 states and 3642 transitions. Second operand 4 states. [2020-12-23 09:33:51,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:51,941 INFO L93 Difference]: Finished difference Result 6025 states and 8893 transitions. [2020-12-23 09:33:51,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:51,942 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-12-23 09:33:51,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:51,950 INFO L225 Difference]: With dead ends: 6025 [2020-12-23 09:33:51,950 INFO L226 Difference]: Without dead ends: 3584 [2020-12-23 09:33:51,955 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 09:33:51,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3584 states. [2020-12-23 09:33:52,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3584 to 2465. [2020-12-23 09:33:52,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2465 states. [2020-12-23 09:33:52,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 3639 transitions. [2020-12-23 09:33:52,104 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 3639 transitions. Word has length 138 [2020-12-23 09:33:52,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:52,105 INFO L481 AbstractCegarLoop]: Abstraction has 2465 states and 3639 transitions. [2020-12-23 09:33:52,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:52,105 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 3639 transitions. [2020-12-23 09:33:52,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-23 09:33:52,106 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:52,107 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:33:52,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 09:33:52,107 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:52,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:52,108 INFO L82 PathProgramCache]: Analyzing trace with hash 34938182, now seen corresponding path program 1 times [2020-12-23 09:33:52,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:52,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316810970] [2020-12-23 09:33:52,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:52,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:52,172 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 09:33:52,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316810970] [2020-12-23 09:33:52,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:52,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:33:52,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841475497] [2020-12-23 09:33:52,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:33:52,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:52,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:33:52,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:33:52,176 INFO L87 Difference]: Start difference. First operand 2465 states and 3639 transitions. Second operand 3 states. [2020-12-23 09:33:52,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:52,317 INFO L93 Difference]: Finished difference Result 4905 states and 7242 transitions. [2020-12-23 09:33:52,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:33:52,317 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2020-12-23 09:33:52,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:52,323 INFO L225 Difference]: With dead ends: 4905 [2020-12-23 09:33:52,324 INFO L226 Difference]: Without dead ends: 2465 [2020-12-23 09:33:52,329 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 09:33:52,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states. [2020-12-23 09:33:52,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 2465. [2020-12-23 09:33:52,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2465 states. [2020-12-23 09:33:52,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 3631 transitions. [2020-12-23 09:33:52,525 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 3631 transitions. Word has length 138 [2020-12-23 09:33:52,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:52,526 INFO L481 AbstractCegarLoop]: Abstraction has 2465 states and 3631 transitions. [2020-12-23 09:33:52,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:33:52,526 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 3631 transitions. [2020-12-23 09:33:52,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-23 09:33:52,528 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:52,528 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:33:52,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 09:33:52,529 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:52,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:52,529 INFO L82 PathProgramCache]: Analyzing trace with hash 2098864066, now seen corresponding path program 1 times [2020-12-23 09:33:52,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:52,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670559126] [2020-12-23 09:33:52,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:52,602 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 09:33:52,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670559126] [2020-12-23 09:33:52,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:52,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:52,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65988229] [2020-12-23 09:33:52,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:52,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:52,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:52,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:52,605 INFO L87 Difference]: Start difference. First operand 2465 states and 3631 transitions. Second operand 4 states. [2020-12-23 09:33:52,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:52,982 INFO L93 Difference]: Finished difference Result 5944 states and 8752 transitions. [2020-12-23 09:33:52,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:52,983 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-12-23 09:33:52,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:52,990 INFO L225 Difference]: With dead ends: 5944 [2020-12-23 09:33:52,991 INFO L226 Difference]: Without dead ends: 3505 [2020-12-23 09:33:52,996 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 09:33:53,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3505 states. [2020-12-23 09:33:53,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3505 to 2465. [2020-12-23 09:33:53,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2465 states. [2020-12-23 09:33:53,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 3628 transitions. [2020-12-23 09:33:53,189 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 3628 transitions. Word has length 138 [2020-12-23 09:33:53,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:53,189 INFO L481 AbstractCegarLoop]: Abstraction has 2465 states and 3628 transitions. [2020-12-23 09:33:53,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:53,190 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 3628 transitions. [2020-12-23 09:33:53,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-23 09:33:53,191 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:53,192 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:33:53,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 09:33:53,192 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:53,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:53,193 INFO L82 PathProgramCache]: Analyzing trace with hash -468958268, now seen corresponding path program 1 times [2020-12-23 09:33:53,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:53,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728612496] [2020-12-23 09:33:53,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:53,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:53,250 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 09:33:53,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728612496] [2020-12-23 09:33:53,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:53,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:53,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595132746] [2020-12-23 09:33:53,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:53,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:53,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:53,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:53,253 INFO L87 Difference]: Start difference. First operand 2465 states and 3628 transitions. Second operand 4 states. [2020-12-23 09:33:53,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:53,619 INFO L93 Difference]: Finished difference Result 5942 states and 8742 transitions. [2020-12-23 09:33:53,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:53,619 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-12-23 09:33:53,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:53,628 INFO L225 Difference]: With dead ends: 5942 [2020-12-23 09:33:53,628 INFO L226 Difference]: Without dead ends: 3504 [2020-12-23 09:33:53,635 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 09:33:53,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3504 states. [2020-12-23 09:33:53,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3504 to 2465. [2020-12-23 09:33:53,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2465 states. [2020-12-23 09:33:53,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 3625 transitions. [2020-12-23 09:33:53,798 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 3625 transitions. Word has length 138 [2020-12-23 09:33:53,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:53,798 INFO L481 AbstractCegarLoop]: Abstraction has 2465 states and 3625 transitions. [2020-12-23 09:33:53,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:53,799 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 3625 transitions. [2020-12-23 09:33:53,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-23 09:33:53,800 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:53,800 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:33:53,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 09:33:53,801 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:53,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:53,801 INFO L82 PathProgramCache]: Analyzing trace with hash 2398082, now seen corresponding path program 1 times [2020-12-23 09:33:53,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:53,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282559250] [2020-12-23 09:33:53,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:53,875 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 09:33:53,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282559250] [2020-12-23 09:33:53,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:53,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:33:53,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243134693] [2020-12-23 09:33:53,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:33:53,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:53,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:33:53,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:33:53,878 INFO L87 Difference]: Start difference. First operand 2465 states and 3625 transitions. Second operand 3 states. [2020-12-23 09:33:54,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:54,077 INFO L93 Difference]: Finished difference Result 4902 states and 7211 transitions. [2020-12-23 09:33:54,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:33:54,078 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2020-12-23 09:33:54,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:54,084 INFO L225 Difference]: With dead ends: 4902 [2020-12-23 09:33:54,085 INFO L226 Difference]: Without dead ends: 2465 [2020-12-23 09:33:54,089 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 09:33:54,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states. [2020-12-23 09:33:54,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 2465. [2020-12-23 09:33:54,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2465 states. [2020-12-23 09:33:54,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 3593 transitions. [2020-12-23 09:33:54,238 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 3593 transitions. Word has length 138 [2020-12-23 09:33:54,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:54,239 INFO L481 AbstractCegarLoop]: Abstraction has 2465 states and 3593 transitions. [2020-12-23 09:33:54,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:33:54,239 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 3593 transitions. [2020-12-23 09:33:54,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-23 09:33:54,241 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:54,241 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:33:54,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 09:33:54,241 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:54,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:54,242 INFO L82 PathProgramCache]: Analyzing trace with hash 844564102, now seen corresponding path program 1 times [2020-12-23 09:33:54,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:54,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730900645] [2020-12-23 09:33:54,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:54,297 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 09:33:54,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730900645] [2020-12-23 09:33:54,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:54,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:54,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002429849] [2020-12-23 09:33:54,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:54,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:54,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:54,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:54,300 INFO L87 Difference]: Start difference. First operand 2465 states and 3593 transitions. Second operand 4 states. [2020-12-23 09:33:54,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:54,712 INFO L93 Difference]: Finished difference Result 5936 states and 8649 transitions. [2020-12-23 09:33:54,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:54,713 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-12-23 09:33:54,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:54,721 INFO L225 Difference]: With dead ends: 5936 [2020-12-23 09:33:54,721 INFO L226 Difference]: Without dead ends: 3501 [2020-12-23 09:33:54,726 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 09:33:54,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3501 states. [2020-12-23 09:33:54,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3501 to 2465. [2020-12-23 09:33:54,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2465 states. [2020-12-23 09:33:54,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 3590 transitions. [2020-12-23 09:33:54,908 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 3590 transitions. Word has length 138 [2020-12-23 09:33:54,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:54,908 INFO L481 AbstractCegarLoop]: Abstraction has 2465 states and 3590 transitions. [2020-12-23 09:33:54,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:54,908 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 3590 transitions. [2020-12-23 09:33:54,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-23 09:33:54,910 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:54,911 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:33:54,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 09:33:54,911 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:54,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:54,912 INFO L82 PathProgramCache]: Analyzing trace with hash -194020472, now seen corresponding path program 1 times [2020-12-23 09:33:54,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:54,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909472098] [2020-12-23 09:33:54,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:54,981 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 09:33:54,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909472098] [2020-12-23 09:33:54,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:54,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:54,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600095430] [2020-12-23 09:33:54,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:54,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:54,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:54,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:54,984 INFO L87 Difference]: Start difference. First operand 2465 states and 3590 transitions. Second operand 4 states. [2020-12-23 09:33:55,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:55,423 INFO L93 Difference]: Finished difference Result 5934 states and 8639 transitions. [2020-12-23 09:33:55,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:55,424 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-12-23 09:33:55,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:55,432 INFO L225 Difference]: With dead ends: 5934 [2020-12-23 09:33:55,433 INFO L226 Difference]: Without dead ends: 3500 [2020-12-23 09:33:55,438 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 09:33:55,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3500 states. [2020-12-23 09:33:55,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3500 to 2465. [2020-12-23 09:33:55,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2465 states. [2020-12-23 09:33:55,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 3587 transitions. [2020-12-23 09:33:55,671 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 3587 transitions. Word has length 138 [2020-12-23 09:33:55,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:55,671 INFO L481 AbstractCegarLoop]: Abstraction has 2465 states and 3587 transitions. [2020-12-23 09:33:55,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:55,671 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 3587 transitions. [2020-12-23 09:33:55,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-23 09:33:55,673 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:55,674 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:33:55,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 09:33:55,674 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:55,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:55,675 INFO L82 PathProgramCache]: Analyzing trace with hash 2127781446, now seen corresponding path program 1 times [2020-12-23 09:33:55,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:55,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905669653] [2020-12-23 09:33:55,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:55,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:55,767 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 09:33:55,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905669653] [2020-12-23 09:33:55,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:55,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:55,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377891278] [2020-12-23 09:33:55,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:55,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:55,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:55,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:55,773 INFO L87 Difference]: Start difference. First operand 2465 states and 3587 transitions. Second operand 4 states. [2020-12-23 09:33:56,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:56,195 INFO L93 Difference]: Finished difference Result 5932 states and 8629 transitions. [2020-12-23 09:33:56,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:56,195 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-12-23 09:33:56,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:56,203 INFO L225 Difference]: With dead ends: 5932 [2020-12-23 09:33:56,204 INFO L226 Difference]: Without dead ends: 3499 [2020-12-23 09:33:56,208 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 09:33:56,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3499 states. [2020-12-23 09:33:56,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3499 to 2465. [2020-12-23 09:33:56,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2465 states. [2020-12-23 09:33:56,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 3584 transitions. [2020-12-23 09:33:56,406 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 3584 transitions. Word has length 138 [2020-12-23 09:33:56,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:56,407 INFO L481 AbstractCegarLoop]: Abstraction has 2465 states and 3584 transitions. [2020-12-23 09:33:56,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:56,407 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 3584 transitions. [2020-12-23 09:33:56,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-23 09:33:56,408 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:56,408 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:33:56,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-23 09:33:56,408 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:56,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:56,409 INFO L82 PathProgramCache]: Analyzing trace with hash -14079032, now seen corresponding path program 1 times [2020-12-23 09:33:56,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:56,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225131224] [2020-12-23 09:33:56,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:56,466 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 09:33:56,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225131224] [2020-12-23 09:33:56,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:56,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:56,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510790232] [2020-12-23 09:33:56,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:56,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:56,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:56,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:56,468 INFO L87 Difference]: Start difference. First operand 2465 states and 3584 transitions. Second operand 4 states. [2020-12-23 09:33:56,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:56,881 INFO L93 Difference]: Finished difference Result 5930 states and 8619 transitions. [2020-12-23 09:33:56,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:56,882 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-12-23 09:33:56,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:56,891 INFO L225 Difference]: With dead ends: 5930 [2020-12-23 09:33:56,891 INFO L226 Difference]: Without dead ends: 3498 [2020-12-23 09:33:56,896 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 09:33:56,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3498 states. [2020-12-23 09:33:57,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3498 to 2465. [2020-12-23 09:33:57,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2465 states. [2020-12-23 09:33:57,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 3581 transitions. [2020-12-23 09:33:57,080 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 3581 transitions. Word has length 138 [2020-12-23 09:33:57,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:57,080 INFO L481 AbstractCegarLoop]: Abstraction has 2465 states and 3581 transitions. [2020-12-23 09:33:57,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:57,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 3581 transitions. [2020-12-23 09:33:57,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-23 09:33:57,082 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:57,082 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:33:57,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-23 09:33:57,082 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:57,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:57,083 INFO L82 PathProgramCache]: Analyzing trace with hash -637360634, now seen corresponding path program 1 times [2020-12-23 09:33:57,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:57,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945882349] [2020-12-23 09:33:57,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:57,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:57,140 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 09:33:57,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945882349] [2020-12-23 09:33:57,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:57,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:57,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487262277] [2020-12-23 09:33:57,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:57,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:57,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:57,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:57,143 INFO L87 Difference]: Start difference. First operand 2465 states and 3581 transitions. Second operand 4 states. [2020-12-23 09:33:57,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:57,560 INFO L93 Difference]: Finished difference Result 5928 states and 8609 transitions. [2020-12-23 09:33:57,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:57,561 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-12-23 09:33:57,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:57,569 INFO L225 Difference]: With dead ends: 5928 [2020-12-23 09:33:57,569 INFO L226 Difference]: Without dead ends: 3497 [2020-12-23 09:33:57,574 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 09:33:57,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3497 states. [2020-12-23 09:33:57,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3497 to 2465. [2020-12-23 09:33:57,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2465 states. [2020-12-23 09:33:57,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 3578 transitions. [2020-12-23 09:33:57,786 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 3578 transitions. Word has length 138 [2020-12-23 09:33:57,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:57,786 INFO L481 AbstractCegarLoop]: Abstraction has 2465 states and 3578 transitions. [2020-12-23 09:33:57,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:57,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 3578 transitions. [2020-12-23 09:33:57,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-23 09:33:57,787 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:57,788 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:33:57,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-23 09:33:57,788 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:57,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:57,789 INFO L82 PathProgramCache]: Analyzing trace with hash -518919160, now seen corresponding path program 1 times [2020-12-23 09:33:57,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:57,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627840292] [2020-12-23 09:33:57,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:57,847 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 09:33:57,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627840292] [2020-12-23 09:33:57,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:57,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:57,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438687643] [2020-12-23 09:33:57,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:57,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:57,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:57,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:57,850 INFO L87 Difference]: Start difference. First operand 2465 states and 3578 transitions. Second operand 4 states. [2020-12-23 09:33:58,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:58,244 INFO L93 Difference]: Finished difference Result 5926 states and 8599 transitions. [2020-12-23 09:33:58,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:58,245 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-12-23 09:33:58,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:58,252 INFO L225 Difference]: With dead ends: 5926 [2020-12-23 09:33:58,252 INFO L226 Difference]: Without dead ends: 3496 [2020-12-23 09:33:58,256 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 09:33:58,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3496 states. [2020-12-23 09:33:58,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3496 to 2465. [2020-12-23 09:33:58,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2465 states. [2020-12-23 09:33:58,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 3575 transitions. [2020-12-23 09:33:58,478 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 3575 transitions. Word has length 138 [2020-12-23 09:33:58,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:58,478 INFO L481 AbstractCegarLoop]: Abstraction has 2465 states and 3575 transitions. [2020-12-23 09:33:58,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:58,479 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 3575 transitions. [2020-12-23 09:33:58,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-23 09:33:58,480 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:58,480 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:33:58,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-23 09:33:58,480 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:58,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:58,481 INFO L82 PathProgramCache]: Analyzing trace with hash 870374854, now seen corresponding path program 1 times [2020-12-23 09:33:58,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:58,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657116820] [2020-12-23 09:33:58,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:58,544 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 09:33:58,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657116820] [2020-12-23 09:33:58,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:58,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:58,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126836472] [2020-12-23 09:33:58,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:58,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:58,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:58,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:58,547 INFO L87 Difference]: Start difference. First operand 2465 states and 3575 transitions. Second operand 4 states. [2020-12-23 09:33:59,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:59,024 INFO L93 Difference]: Finished difference Result 5924 states and 8589 transitions. [2020-12-23 09:33:59,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:59,027 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-12-23 09:33:59,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:59,034 INFO L225 Difference]: With dead ends: 5924 [2020-12-23 09:33:59,035 INFO L226 Difference]: Without dead ends: 3495 [2020-12-23 09:33:59,039 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 09:33:59,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3495 states. [2020-12-23 09:33:59,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3495 to 2465. [2020-12-23 09:33:59,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2465 states. [2020-12-23 09:33:59,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 3572 transitions. [2020-12-23 09:33:59,332 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 3572 transitions. Word has length 138 [2020-12-23 09:33:59,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:59,334 INFO L481 AbstractCegarLoop]: Abstraction has 2465 states and 3572 transitions. [2020-12-23 09:33:59,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:59,334 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 3572 transitions. [2020-12-23 09:33:59,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-23 09:33:59,336 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:59,337 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:33:59,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-23 09:33:59,337 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:59,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:59,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1163019192, now seen corresponding path program 1 times [2020-12-23 09:33:59,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:59,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286795443] [2020-12-23 09:33:59,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:59,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:33:59,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286795443] [2020-12-23 09:33:59,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:59,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:33:59,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182124000] [2020-12-23 09:33:59,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:33:59,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:59,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:33:59,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:33:59,414 INFO L87 Difference]: Start difference. First operand 2465 states and 3572 transitions. Second operand 3 states. [2020-12-23 09:33:59,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:59,838 INFO L93 Difference]: Finished difference Result 7178 states and 10389 transitions. [2020-12-23 09:33:59,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:33:59,839 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2020-12-23 09:33:59,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:59,844 INFO L225 Difference]: With dead ends: 7178 [2020-12-23 09:33:59,844 INFO L226 Difference]: Without dead ends: 4751 [2020-12-23 09:33:59,848 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 09:33:59,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4751 states. [2020-12-23 09:34:00,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4751 to 4601. [2020-12-23 09:34:00,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4601 states. [2020-12-23 09:34:00,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4601 states to 4601 states and 6629 transitions. [2020-12-23 09:34:00,224 INFO L78 Accepts]: Start accepts. Automaton has 4601 states and 6629 transitions. Word has length 138 [2020-12-23 09:34:00,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:34:00,224 INFO L481 AbstractCegarLoop]: Abstraction has 4601 states and 6629 transitions. [2020-12-23 09:34:00,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:34:00,224 INFO L276 IsEmpty]: Start isEmpty. Operand 4601 states and 6629 transitions. [2020-12-23 09:34:00,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-12-23 09:34:00,228 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:34:00,229 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:34:00,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-23 09:34:00,229 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:34:00,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:34:00,229 INFO L82 PathProgramCache]: Analyzing trace with hash 92158667, now seen corresponding path program 1 times [2020-12-23 09:34:00,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:34:00,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368508591] [2020-12-23 09:34:00,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:34:00,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:34:00,318 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 09:34:00,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368508591] [2020-12-23 09:34:00,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:34:00,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:34:00,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274181790] [2020-12-23 09:34:00,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:34:00,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:34:00,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:34:00,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:34:00,320 INFO L87 Difference]: Start difference. First operand 4601 states and 6629 transitions. Second operand 5 states. [2020-12-23 09:34:01,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:34:01,420 INFO L93 Difference]: Finished difference Result 13603 states and 19616 transitions. [2020-12-23 09:34:01,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:34:01,420 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2020-12-23 09:34:01,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:34:01,431 INFO L225 Difference]: With dead ends: 13603 [2020-12-23 09:34:01,432 INFO L226 Difference]: Without dead ends: 9044 [2020-12-23 09:34:01,439 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 09:34:01,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9044 states. [2020-12-23 09:34:01,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9044 to 4676. [2020-12-23 09:34:01,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4676 states. [2020-12-23 09:34:01,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4676 states to 4676 states and 6680 transitions. [2020-12-23 09:34:01,787 INFO L78 Accepts]: Start accepts. Automaton has 4676 states and 6680 transitions. Word has length 225 [2020-12-23 09:34:01,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:34:01,787 INFO L481 AbstractCegarLoop]: Abstraction has 4676 states and 6680 transitions. [2020-12-23 09:34:01,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:34:01,787 INFO L276 IsEmpty]: Start isEmpty. Operand 4676 states and 6680 transitions. [2020-12-23 09:34:01,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-12-23 09:34:01,792 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:34:01,792 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:34:01,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-23 09:34:01,792 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:34:01,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:34:01,793 INFO L82 PathProgramCache]: Analyzing trace with hash -263209657, now seen corresponding path program 1 times [2020-12-23 09:34:01,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:34:01,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552085388] [2020-12-23 09:34:01,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:34:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:34:01,877 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 09:34:01,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552085388] [2020-12-23 09:34:01,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:34:01,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:34:01,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310287229] [2020-12-23 09:34:01,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:34:01,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:34:01,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:34:01,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:34:01,879 INFO L87 Difference]: Start difference. First operand 4676 states and 6680 transitions. Second operand 4 states. [2020-12-23 09:34:03,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:34:03,011 INFO L93 Difference]: Finished difference Result 15871 states and 22630 transitions. [2020-12-23 09:34:03,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:34:03,012 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 225 [2020-12-23 09:34:03,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:34:03,025 INFO L225 Difference]: With dead ends: 15871 [2020-12-23 09:34:03,025 INFO L226 Difference]: Without dead ends: 11239 [2020-12-23 09:34:03,033 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 09:34:03,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11239 states. [2020-12-23 09:34:03,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11239 to 8845. [2020-12-23 09:34:03,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8845 states. [2020-12-23 09:34:03,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8845 states to 8845 states and 12578 transitions. [2020-12-23 09:34:03,753 INFO L78 Accepts]: Start accepts. Automaton has 8845 states and 12578 transitions. Word has length 225 [2020-12-23 09:34:03,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:34:03,753 INFO L481 AbstractCegarLoop]: Abstraction has 8845 states and 12578 transitions. [2020-12-23 09:34:03,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:34:03,753 INFO L276 IsEmpty]: Start isEmpty. Operand 8845 states and 12578 transitions. [2020-12-23 09:34:03,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-12-23 09:34:03,761 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:34:03,761 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:34:03,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-23 09:34:03,761 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:34:03,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:34:03,762 INFO L82 PathProgramCache]: Analyzing trace with hash 291204262, now seen corresponding path program 1 times [2020-12-23 09:34:03,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:34:03,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763947520] [2020-12-23 09:34:03,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:34:03,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:34:03,844 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 09:34:03,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763947520] [2020-12-23 09:34:03,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:34:03,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:34:03,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427985338] [2020-12-23 09:34:03,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:34:03,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:34:03,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:34:03,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:34:03,846 INFO L87 Difference]: Start difference. First operand 8845 states and 12578 transitions. Second operand 5 states. [2020-12-23 09:34:05,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:34:05,345 INFO L93 Difference]: Finished difference Result 25904 states and 36937 transitions. [2020-12-23 09:34:05,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:34:05,346 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2020-12-23 09:34:05,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:34:05,367 INFO L225 Difference]: With dead ends: 25904 [2020-12-23 09:34:05,367 INFO L226 Difference]: Without dead ends: 17107 [2020-12-23 09:34:05,378 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 09:34:05,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17107 states. [2020-12-23 09:34:06,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17107 to 8989. [2020-12-23 09:34:06,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8989 states. [2020-12-23 09:34:06,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8989 states to 8989 states and 12677 transitions. [2020-12-23 09:34:06,103 INFO L78 Accepts]: Start accepts. Automaton has 8989 states and 12677 transitions. Word has length 225 [2020-12-23 09:34:06,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:34:06,103 INFO L481 AbstractCegarLoop]: Abstraction has 8989 states and 12677 transitions. [2020-12-23 09:34:06,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:34:06,103 INFO L276 IsEmpty]: Start isEmpty. Operand 8989 states and 12677 transitions. [2020-12-23 09:34:06,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-12-23 09:34:06,109 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:34:06,109 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:34:06,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-23 09:34:06,110 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:34:06,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:34:06,110 INFO L82 PathProgramCache]: Analyzing trace with hash -835748830, now seen corresponding path program 1 times [2020-12-23 09:34:06,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:34:06,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396885433] [2020-12-23 09:34:06,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:34:06,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:34:06,200 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 09:34:06,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396885433] [2020-12-23 09:34:06,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:34:06,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:34:06,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480517727] [2020-12-23 09:34:06,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:34:06,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:34:06,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:34:06,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:34:06,203 INFO L87 Difference]: Start difference. First operand 8989 states and 12677 transitions. Second operand 4 states. [2020-12-23 09:34:08,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:34:08,242 INFO L93 Difference]: Finished difference Result 30596 states and 43082 transitions. [2020-12-23 09:34:08,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:34:08,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 225 [2020-12-23 09:34:08,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:34:08,268 INFO L225 Difference]: With dead ends: 30596 [2020-12-23 09:34:08,269 INFO L226 Difference]: Without dead ends: 21664 [2020-12-23 09:34:08,285 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 09:34:08,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21664 states. [2020-12-23 09:34:09,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21664 to 17100. [2020-12-23 09:34:09,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17100 states. [2020-12-23 09:34:09,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17100 states to 17100 states and 24014 transitions. [2020-12-23 09:34:09,624 INFO L78 Accepts]: Start accepts. Automaton has 17100 states and 24014 transitions. Word has length 225 [2020-12-23 09:34:09,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:34:09,624 INFO L481 AbstractCegarLoop]: Abstraction has 17100 states and 24014 transitions. [2020-12-23 09:34:09,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:34:09,624 INFO L276 IsEmpty]: Start isEmpty. Operand 17100 states and 24014 transitions. [2020-12-23 09:34:09,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-12-23 09:34:09,636 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:34:09,636 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:34:09,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-23 09:34:09,637 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:34:09,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:34:09,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1531444735, now seen corresponding path program 1 times [2020-12-23 09:34:09,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:34:09,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17110424] [2020-12-23 09:34:09,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:34:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:34:09,721 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 09:34:09,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17110424] [2020-12-23 09:34:09,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:34:09,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:34:09,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836775739] [2020-12-23 09:34:09,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:34:09,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:34:09,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:34:09,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:34:09,723 INFO L87 Difference]: Start difference. First operand 17100 states and 24014 transitions. Second operand 5 states. [2020-12-23 09:34:12,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:34:12,302 INFO L93 Difference]: Finished difference Result 48887 states and 69033 transitions. [2020-12-23 09:34:12,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:34:12,303 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2020-12-23 09:34:12,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:34:12,350 INFO L225 Difference]: With dead ends: 48887 [2020-12-23 09:34:12,350 INFO L226 Difference]: Without dead ends: 31848 [2020-12-23 09:34:12,370 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 09:34:12,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31848 states. [2020-12-23 09:34:14,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31848 to 17376. [2020-12-23 09:34:14,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17376 states. [2020-12-23 09:34:14,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17376 states to 17376 states and 24205 transitions. [2020-12-23 09:34:14,161 INFO L78 Accepts]: Start accepts. Automaton has 17376 states and 24205 transitions. Word has length 225 [2020-12-23 09:34:14,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:34:14,162 INFO L481 AbstractCegarLoop]: Abstraction has 17376 states and 24205 transitions. [2020-12-23 09:34:14,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:34:14,162 INFO L276 IsEmpty]: Start isEmpty. Operand 17376 states and 24205 transitions. [2020-12-23 09:34:14,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-12-23 09:34:14,169 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:34:14,169 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:34:14,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-23 09:34:14,169 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:34:14,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:34:14,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1754633347, now seen corresponding path program 1 times [2020-12-23 09:34:14,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:34:14,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475247977] [2020-12-23 09:34:14,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:34:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:34:14,256 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 09:34:14,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475247977] [2020-12-23 09:34:14,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:34:14,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:34:14,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976825740] [2020-12-23 09:34:14,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:34:14,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:34:14,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:34:14,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:34:14,258 INFO L87 Difference]: Start difference. First operand 17376 states and 24205 transitions. Second operand 5 states. [2020-12-23 09:34:17,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:34:17,923 INFO L93 Difference]: Finished difference Result 62207 states and 87408 transitions. [2020-12-23 09:34:17,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:34:17,924 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2020-12-23 09:34:17,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:34:17,974 INFO L225 Difference]: With dead ends: 62207 [2020-12-23 09:34:17,975 INFO L226 Difference]: Without dead ends: 44899 [2020-12-23 09:34:18,004 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 09:34:18,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44899 states. [2020-12-23 09:34:19,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44899 to 17907. [2020-12-23 09:34:19,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17907 states. [2020-12-23 09:34:19,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17907 states to 17907 states and 24736 transitions. [2020-12-23 09:34:19,752 INFO L78 Accepts]: Start accepts. Automaton has 17907 states and 24736 transitions. Word has length 225 [2020-12-23 09:34:19,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:34:19,752 INFO L481 AbstractCegarLoop]: Abstraction has 17907 states and 24736 transitions. [2020-12-23 09:34:19,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:34:19,752 INFO L276 IsEmpty]: Start isEmpty. Operand 17907 states and 24736 transitions. [2020-12-23 09:34:19,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-12-23 09:34:19,760 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:34:19,760 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:34:19,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-23 09:34:19,760 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:34:19,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:34:19,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1754336059, now seen corresponding path program 1 times [2020-12-23 09:34:19,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:34:19,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058011964] [2020-12-23 09:34:19,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:34:19,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:34:19,854 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 09:34:19,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058011964] [2020-12-23 09:34:19,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:34:19,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:34:19,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465592667] [2020-12-23 09:34:19,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:34:19,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:34:19,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:34:19,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:34:19,856 INFO L87 Difference]: Start difference. First operand 17907 states and 24736 transitions. Second operand 4 states. [2020-12-23 09:34:24,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:34:24,382 INFO L93 Difference]: Finished difference Result 60900 states and 84006 transitions. [2020-12-23 09:34:24,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:34:24,382 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 225 [2020-12-23 09:34:24,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:34:24,431 INFO L225 Difference]: With dead ends: 60900 [2020-12-23 09:34:24,431 INFO L226 Difference]: Without dead ends: 43066 [2020-12-23 09:34:24,451 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 09:34:24,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43066 states. [2020-12-23 09:34:27,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43066 to 34138. [2020-12-23 09:34:27,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34138 states. [2020-12-23 09:34:27,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34138 states to 34138 states and 46969 transitions. [2020-12-23 09:34:27,902 INFO L78 Accepts]: Start accepts. Automaton has 34138 states and 46969 transitions. Word has length 225 [2020-12-23 09:34:27,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:34:27,903 INFO L481 AbstractCegarLoop]: Abstraction has 34138 states and 46969 transitions. [2020-12-23 09:34:27,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:34:27,903 INFO L276 IsEmpty]: Start isEmpty. Operand 34138 states and 46969 transitions. [2020-12-23 09:34:27,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-12-23 09:34:27,919 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:34:27,919 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:34:27,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-23 09:34:27,919 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:34:27,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:34:27,920 INFO L82 PathProgramCache]: Analyzing trace with hash 406323065, now seen corresponding path program 1 times [2020-12-23 09:34:27,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:34:27,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835760478] [2020-12-23 09:34:27,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:34:27,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:34:28,003 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 09:34:28,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835760478] [2020-12-23 09:34:28,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:34:28,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:34:28,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617504646] [2020-12-23 09:34:28,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:34:28,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:34:28,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:34:28,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:34:28,005 INFO L87 Difference]: Start difference. First operand 34138 states and 46969 transitions. Second operand 5 states. [2020-12-23 09:34:33,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:34:33,932 INFO L93 Difference]: Finished difference Result 94887 states and 131492 transitions. [2020-12-23 09:34:33,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:34:33,933 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2020-12-23 09:34:33,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:34:34,003 INFO L225 Difference]: With dead ends: 94887 [2020-12-23 09:34:34,004 INFO L226 Difference]: Without dead ends: 60826 [2020-12-23 09:34:34,033 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 09:34:34,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60826 states. [2020-12-23 09:34:38,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60826 to 34666. [2020-12-23 09:34:38,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34666 states. [2020-12-23 09:34:38,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34666 states to 34666 states and 47336 transitions. [2020-12-23 09:34:38,050 INFO L78 Accepts]: Start accepts. Automaton has 34666 states and 47336 transitions. Word has length 225 [2020-12-23 09:34:38,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:34:38,050 INFO L481 AbstractCegarLoop]: Abstraction has 34666 states and 47336 transitions. [2020-12-23 09:34:38,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:34:38,051 INFO L276 IsEmpty]: Start isEmpty. Operand 34666 states and 47336 transitions. [2020-12-23 09:34:38,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-12-23 09:34:38,065 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:34:38,066 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:34:38,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-23 09:34:38,066 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:34:38,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:34:38,067 INFO L82 PathProgramCache]: Analyzing trace with hash 671073013, now seen corresponding path program 1 times [2020-12-23 09:34:38,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:34:38,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009650776] [2020-12-23 09:34:38,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:34:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:34:38,147 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 09:34:38,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009650776] [2020-12-23 09:34:38,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:34:38,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:34:38,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307976515] [2020-12-23 09:34:38,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:34:38,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:34:38,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:34:38,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:34:38,149 INFO L87 Difference]: Start difference. First operand 34666 states and 47336 transitions. Second operand 5 states. [2020-12-23 09:34:46,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:34:46,431 INFO L93 Difference]: Finished difference Result 118783 states and 163919 transitions. [2020-12-23 09:34:46,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:34:46,432 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2020-12-23 09:34:46,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:34:46,522 INFO L225 Difference]: With dead ends: 118783 [2020-12-23 09:34:46,523 INFO L226 Difference]: Without dead ends: 84201 [2020-12-23 09:34:46,559 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 09:34:46,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84201 states. [2020-12-23 09:34:50,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84201 to 35677. [2020-12-23 09:34:50,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35677 states. [2020-12-23 09:34:50,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35677 states to 35677 states and 48347 transitions. [2020-12-23 09:34:50,889 INFO L78 Accepts]: Start accepts. Automaton has 35677 states and 48347 transitions. Word has length 225 [2020-12-23 09:34:50,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:34:50,890 INFO L481 AbstractCegarLoop]: Abstraction has 35677 states and 48347 transitions. [2020-12-23 09:34:50,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:34:50,890 INFO L276 IsEmpty]: Start isEmpty. Operand 35677 states and 48347 transitions. [2020-12-23 09:34:50,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-12-23 09:34:50,904 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:34:50,904 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:34:50,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-23 09:34:50,904 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:34:50,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:34:50,905 INFO L82 PathProgramCache]: Analyzing trace with hash 406425523, now seen corresponding path program 1 times [2020-12-23 09:34:50,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:34:50,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166634461] [2020-12-23 09:34:50,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:34:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:34:51,001 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 09:34:51,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166634461] [2020-12-23 09:34:51,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:34:51,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:34:51,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618815746] [2020-12-23 09:34:51,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:34:51,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:34:51,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:34:51,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:34:51,003 INFO L87 Difference]: Start difference. First operand 35677 states and 48347 transitions. Second operand 4 states. [2020-12-23 09:35:00,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:35:00,419 INFO L93 Difference]: Finished difference Result 121012 states and 163765 transitions. [2020-12-23 09:35:00,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:35:00,419 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 225 [2020-12-23 09:35:00,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:35:00,522 INFO L225 Difference]: With dead ends: 121012 [2020-12-23 09:35:00,523 INFO L226 Difference]: Without dead ends: 85424 [2020-12-23 09:35:00,560 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 09:35:00,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85424 states. [2020-12-23 09:35:08,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85424 to 68028. [2020-12-23 09:35:08,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68028 states. [2020-12-23 09:35:08,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68028 states to 68028 states and 91848 transitions. [2020-12-23 09:35:08,735 INFO L78 Accepts]: Start accepts. Automaton has 68028 states and 91848 transitions. Word has length 225 [2020-12-23 09:35:08,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:35:08,735 INFO L481 AbstractCegarLoop]: Abstraction has 68028 states and 91848 transitions. [2020-12-23 09:35:08,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:35:08,735 INFO L276 IsEmpty]: Start isEmpty. Operand 68028 states and 91848 transitions. [2020-12-23 09:35:08,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-12-23 09:35:08,761 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:35:08,761 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:35:08,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-23 09:35:08,761 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:35:08,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:35:08,762 INFO L82 PathProgramCache]: Analyzing trace with hash 158232817, now seen corresponding path program 1 times [2020-12-23 09:35:08,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:35:08,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136534683] [2020-12-23 09:35:08,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:35:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:35:09,033 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 09:35:09,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136534683] [2020-12-23 09:35:09,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:35:09,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:35:09,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015858076] [2020-12-23 09:35:09,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:35:09,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:35:09,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:35:09,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:35:09,038 INFO L87 Difference]: Start difference. First operand 68028 states and 91848 transitions. Second operand 5 states. [2020-12-23 09:35:21,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:35:21,823 INFO L93 Difference]: Finished difference Result 184051 states and 250419 transitions. [2020-12-23 09:35:21,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:35:21,824 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2020-12-23 09:35:21,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:35:21,975 INFO L225 Difference]: With dead ends: 184051 [2020-12-23 09:35:21,975 INFO L226 Difference]: Without dead ends: 116116 [2020-12-23 09:35:22,227 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 09:35:22,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116116 states. [2020-12-23 09:35:30,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116116 to 69036. [2020-12-23 09:35:30,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69036 states. [2020-12-23 09:35:30,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69036 states to 69036 states and 92551 transitions. [2020-12-23 09:35:30,924 INFO L78 Accepts]: Start accepts. Automaton has 69036 states and 92551 transitions. Word has length 225 [2020-12-23 09:35:30,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:35:30,924 INFO L481 AbstractCegarLoop]: Abstraction has 69036 states and 92551 transitions. [2020-12-23 09:35:30,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:35:30,924 INFO L276 IsEmpty]: Start isEmpty. Operand 69036 states and 92551 transitions. [2020-12-23 09:35:30,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-12-23 09:35:30,942 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:35:30,943 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:35:30,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-23 09:35:30,943 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:35:30,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:35:30,943 INFO L82 PathProgramCache]: Analyzing trace with hash -134050195, now seen corresponding path program 1 times [2020-12-23 09:35:30,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:35:30,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274628900] [2020-12-23 09:35:30,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:35:30,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:35:31,028 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 09:35:31,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274628900] [2020-12-23 09:35:31,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:35:31,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:35:31,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70691682] [2020-12-23 09:35:31,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:35:31,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:35:31,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:35:31,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:35:31,030 INFO L87 Difference]: Start difference. First operand 69036 states and 92551 transitions. Second operand 5 states. [2020-12-23 09:35:49,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:35:49,174 INFO L93 Difference]: Finished difference Result 226855 states and 307458 transitions. [2020-12-23 09:35:49,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:35:49,176 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2020-12-23 09:35:49,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:35:49,560 INFO L225 Difference]: With dead ends: 226855 [2020-12-23 09:35:49,560 INFO L226 Difference]: Without dead ends: 157919 [2020-12-23 09:35:49,636 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 09:35:49,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157919 states. [2020-12-23 09:35:59,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157919 to 70959. [2020-12-23 09:35:59,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70959 states. [2020-12-23 09:35:59,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70959 states to 70959 states and 94474 transitions. [2020-12-23 09:35:59,217 INFO L78 Accepts]: Start accepts. Automaton has 70959 states and 94474 transitions. Word has length 225 [2020-12-23 09:35:59,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:35:59,217 INFO L481 AbstractCegarLoop]: Abstraction has 70959 states and 94474 transitions. [2020-12-23 09:35:59,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:35:59,217 INFO L276 IsEmpty]: Start isEmpty. Operand 70959 states and 94474 transitions. [2020-12-23 09:35:59,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-12-23 09:35:59,238 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:35:59,239 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:35:59,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-12-23 09:35:59,239 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:35:59,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:35:59,239 INFO L82 PathProgramCache]: Analyzing trace with hash -110528279, now seen corresponding path program 1 times [2020-12-23 09:35:59,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:35:59,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187221765] [2020-12-23 09:35:59,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:35:59,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:35:59,373 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 09:35:59,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187221765] [2020-12-23 09:35:59,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:35:59,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:35:59,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207236925] [2020-12-23 09:35:59,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:35:59,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:35:59,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:35:59,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:35:59,376 INFO L87 Difference]: Start difference. First operand 70959 states and 94474 transitions. Second operand 4 states. [2020-12-23 09:36:20,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:36:20,657 INFO L93 Difference]: Finished difference Result 239784 states and 318804 transitions. [2020-12-23 09:36:20,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:36:20,658 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 225 [2020-12-23 09:36:20,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:36:20,897 INFO L225 Difference]: With dead ends: 239784 [2020-12-23 09:36:20,897 INFO L226 Difference]: Without dead ends: 168930 [2020-12-23 09:36:20,978 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 09:36:21,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168930 states.