/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.09.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 09:33:21,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 09:33:21,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 09:33:21,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 09:33:21,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 09:33:21,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 09:33:21,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 09:33:21,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 09:33:21,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 09:33:21,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 09:33:21,733 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 09:33:21,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 09:33:21,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 09:33:21,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 09:33:21,738 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 09:33:21,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 09:33:21,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 09:33:21,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 09:33:21,747 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 09:33:21,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 09:33:21,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 09:33:21,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 09:33:21,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 09:33:21,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 09:33:21,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 09:33:21,774 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 09:33:21,775 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 09:33:21,776 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 09:33:21,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 09:33:21,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 09:33:21,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 09:33:21,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 09:33:21,781 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 09:33:21,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 09:33:21,783 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 09:33:21,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 09:33:21,785 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 09:33:21,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 09:33:21,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 09:33:21,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 09:33:21,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 09:33:21,788 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 09:33:21,840 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 09:33:21,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 09:33:21,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 09:33:21,845 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 09:33:21,846 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 09:33:21,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 09:33:21,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 09:33:21,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 09:33:21,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 09:33:21,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 09:33:21,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 09:33:21,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 09:33:21,848 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 09:33:21,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 09:33:21,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 09:33:21,849 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 09:33:21,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 09:33:21,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 09:33:21,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 09:33:21,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 09:33:21,850 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 09:33:21,850 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 09:33:21,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 09:33:21,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 09:33:21,851 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 09:33:21,851 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 09:33:22,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 09:33:22,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 09:33:22,271 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 09:33:22,272 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 09:33:22,273 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 09:33:22,274 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.09.cil-1.c [2020-12-23 09:33:22,376 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/80467de30/8d8aca0135f24afdb041eced6442877a/FLAG48011475c [2020-12-23 09:33:23,096 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 09:33:23,097 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.09.cil-1.c [2020-12-23 09:33:23,116 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/80467de30/8d8aca0135f24afdb041eced6442877a/FLAG48011475c [2020-12-23 09:33:23,402 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/80467de30/8d8aca0135f24afdb041eced6442877a [2020-12-23 09:33:23,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 09:33:23,410 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 09:33:23,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 09:33:23,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 09:33:23,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 09:33:23,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:33:23" (1/1) ... [2020-12-23 09:33:23,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d48d15c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:33:23, skipping insertion in model container [2020-12-23 09:33:23,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:33:23" (1/1) ... [2020-12-23 09:33:23,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 09:33:23,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 09:33:23,659 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.09.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_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[~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[~__retres1~10,] 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[~__retres1~10,] 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[~__retres1~10,] 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[~__retres1~10,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~10,] 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[~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[~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[~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[~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[~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[~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[~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[~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[~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[~__retres1~11,] [2020-12-23 09:33:23,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:33:23,829 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 09:33:23,849 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.09.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_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[~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[~__retres1~10,] 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[~__retres1~10,] 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[~__retres1~10,] 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[~__retres1~10,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~10,] 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[~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[~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[~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[~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[~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[~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[~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[~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[~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[~__retres1~11,] [2020-12-23 09:33:23,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:33:23,970 INFO L208 MainTranslator]: Completed translation [2020-12-23 09:33:23,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:33:23 WrapperNode [2020-12-23 09:33:23,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 09:33:23,973 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 09:33:23,973 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 09:33:23,973 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 09:33:23,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:33:23" (1/1) ... [2020-12-23 09:33:23,997 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:33:23" (1/1) ... [2020-12-23 09:33:24,158 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 09:33:24,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 09:33:24,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 09:33:24,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 09:33:24,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:33:23" (1/1) ... [2020-12-23 09:33:24,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:33:23" (1/1) ... [2020-12-23 09:33:24,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:33:23" (1/1) ... [2020-12-23 09:33:24,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:33:23" (1/1) ... [2020-12-23 09:33:24,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:33:23" (1/1) ... [2020-12-23 09:33:24,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:33:23" (1/1) ... [2020-12-23 09:33:24,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:33:23" (1/1) ... [2020-12-23 09:33:24,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 09:33:24,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 09:33:24,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 09:33:24,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 09:33:24,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:33:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 09:33:24,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 09:33:24,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 09:33:24,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 09:33:24,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 09:33:26,471 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 09:33:26,472 INFO L299 CfgBuilder]: Removed 376 assume(true) statements. [2020-12-23 09:33:26,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:33:26 BoogieIcfgContainer [2020-12-23 09:33:26,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 09:33:26,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 09:33:26,477 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 09:33:26,481 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 09:33:26,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 09:33:23" (1/3) ... [2020-12-23 09:33:26,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3781db0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:33:26, skipping insertion in model container [2020-12-23 09:33:26,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:33:23" (2/3) ... [2020-12-23 09:33:26,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3781db0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:33:26, skipping insertion in model container [2020-12-23 09:33:26,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:33:26" (3/3) ... [2020-12-23 09:33:26,484 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.09.cil-1.c [2020-12-23 09:33:26,491 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 09:33:26,497 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 09:33:26,516 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 09:33:26,552 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 09:33:26,552 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 09:33:26,552 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 09:33:26,552 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 09:33:26,552 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 09:33:26,552 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 09:33:26,553 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 09:33:26,553 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 09:33:26,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states. [2020-12-23 09:33:26,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-23 09:33:26,599 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:26,600 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] [2020-12-23 09:33:26,601 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:26,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:26,608 INFO L82 PathProgramCache]: Analyzing trace with hash 63539704, now seen corresponding path program 1 times [2020-12-23 09:33:26,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:26,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864243979] [2020-12-23 09:33:26,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:26,898 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 09:33:26,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864243979] [2020-12-23 09:33:26,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:26,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:26,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170668237] [2020-12-23 09:33:26,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:33:26,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:26,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:33:26,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:33:26,926 INFO L87 Difference]: Start difference. First operand 1149 states. Second operand 3 states. [2020-12-23 09:33:27,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:27,162 INFO L93 Difference]: Finished difference Result 2293 states and 3487 transitions. [2020-12-23 09:33:27,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:33:27,164 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2020-12-23 09:33:27,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:27,209 INFO L225 Difference]: With dead ends: 2293 [2020-12-23 09:33:27,209 INFO L226 Difference]: Without dead ends: 1145 [2020-12-23 09:33:27,230 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 09:33:27,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2020-12-23 09:33:27,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1145. [2020-12-23 09:33:27,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1145 states. [2020-12-23 09:33:27,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1717 transitions. [2020-12-23 09:33:27,369 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1717 transitions. Word has length 127 [2020-12-23 09:33:27,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:27,370 INFO L481 AbstractCegarLoop]: Abstraction has 1145 states and 1717 transitions. [2020-12-23 09:33:27,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:33:27,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1717 transitions. [2020-12-23 09:33:27,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-23 09:33:27,377 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:27,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:33:27,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 09:33:27,378 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:27,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:27,380 INFO L82 PathProgramCache]: Analyzing trace with hash -798293898, now seen corresponding path program 1 times [2020-12-23 09:33:27,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:27,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939602792] [2020-12-23 09:33:27,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:27,594 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 09:33:27,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939602792] [2020-12-23 09:33:27,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:27,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:27,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658441522] [2020-12-23 09:33:27,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:33:27,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:27,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:33:27,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:33:27,599 INFO L87 Difference]: Start difference. First operand 1145 states and 1717 transitions. Second operand 3 states. [2020-12-23 09:33:27,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:27,663 INFO L93 Difference]: Finished difference Result 2277 states and 3412 transitions. [2020-12-23 09:33:27,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:33:27,663 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2020-12-23 09:33:27,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:27,672 INFO L225 Difference]: With dead ends: 2277 [2020-12-23 09:33:27,672 INFO L226 Difference]: Without dead ends: 1145 [2020-12-23 09:33:27,676 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 09:33:27,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2020-12-23 09:33:27,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1145. [2020-12-23 09:33:27,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1145 states. [2020-12-23 09:33:27,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1716 transitions. [2020-12-23 09:33:27,717 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1716 transitions. Word has length 127 [2020-12-23 09:33:27,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:27,720 INFO L481 AbstractCegarLoop]: Abstraction has 1145 states and 1716 transitions. [2020-12-23 09:33:27,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:33:27,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1716 transitions. [2020-12-23 09:33:27,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-23 09:33:27,730 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:27,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:33:27,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 09:33:27,731 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:27,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:27,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1567741172, now seen corresponding path program 1 times [2020-12-23 09:33:27,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:27,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178189629] [2020-12-23 09:33:27,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:27,891 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 09:33:27,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178189629] [2020-12-23 09:33:27,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:27,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:33:27,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377083989] [2020-12-23 09:33:27,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:33:27,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:27,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:33:27,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:33:27,902 INFO L87 Difference]: Start difference. First operand 1145 states and 1716 transitions. Second operand 3 states. [2020-12-23 09:33:28,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:28,030 INFO L93 Difference]: Finished difference Result 3227 states and 4822 transitions. [2020-12-23 09:33:28,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:33:28,031 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2020-12-23 09:33:28,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:28,042 INFO L225 Difference]: With dead ends: 3227 [2020-12-23 09:33:28,042 INFO L226 Difference]: Without dead ends: 2096 [2020-12-23 09:33:28,045 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 09:33:28,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2096 states. [2020-12-23 09:33:28,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2096 to 2094. [2020-12-23 09:33:28,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2094 states. [2020-12-23 09:33:28,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 3124 transitions. [2020-12-23 09:33:28,143 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 3124 transitions. Word has length 127 [2020-12-23 09:33:28,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:28,150 INFO L481 AbstractCegarLoop]: Abstraction has 2094 states and 3124 transitions. [2020-12-23 09:33:28,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:33:28,151 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 3124 transitions. [2020-12-23 09:33:28,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-23 09:33:28,152 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:28,152 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] [2020-12-23 09:33:28,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 09:33:28,153 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:28,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:28,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1325644144, now seen corresponding path program 1 times [2020-12-23 09:33:28,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:28,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133443567] [2020-12-23 09:33:28,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:28,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:28,283 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 09:33:28,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133443567] [2020-12-23 09:33:28,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:28,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:28,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18753953] [2020-12-23 09:33:28,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:28,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:28,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:28,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:28,286 INFO L87 Difference]: Start difference. First operand 2094 states and 3124 transitions. Second operand 4 states. [2020-12-23 09:33:28,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:28,519 INFO L93 Difference]: Finished difference Result 5123 states and 7633 transitions. [2020-12-23 09:33:28,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:28,520 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-12-23 09:33:28,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:28,535 INFO L225 Difference]: With dead ends: 5123 [2020-12-23 09:33:28,535 INFO L226 Difference]: Without dead ends: 3044 [2020-12-23 09:33:28,539 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 09:33:28,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3044 states. [2020-12-23 09:33:28,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3044 to 2094. [2020-12-23 09:33:28,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2094 states. [2020-12-23 09:33:28,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 3121 transitions. [2020-12-23 09:33:28,672 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 3121 transitions. Word has length 127 [2020-12-23 09:33:28,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:28,672 INFO L481 AbstractCegarLoop]: Abstraction has 2094 states and 3121 transitions. [2020-12-23 09:33:28,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:28,673 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 3121 transitions. [2020-12-23 09:33:28,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-23 09:33:28,674 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:28,674 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] [2020-12-23 09:33:28,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 09:33:28,675 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:28,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:28,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1242178190, now seen corresponding path program 1 times [2020-12-23 09:33:28,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:28,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813870606] [2020-12-23 09:33:28,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:28,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:28,806 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 09:33:28,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813870606] [2020-12-23 09:33:28,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:28,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:28,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078858172] [2020-12-23 09:33:28,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:28,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:28,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:28,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:28,811 INFO L87 Difference]: Start difference. First operand 2094 states and 3121 transitions. Second operand 4 states. [2020-12-23 09:33:29,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:29,071 INFO L93 Difference]: Finished difference Result 5121 states and 7623 transitions. [2020-12-23 09:33:29,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:29,074 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-12-23 09:33:29,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:29,089 INFO L225 Difference]: With dead ends: 5121 [2020-12-23 09:33:29,089 INFO L226 Difference]: Without dead ends: 3043 [2020-12-23 09:33:29,096 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 09:33:29,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3043 states. [2020-12-23 09:33:29,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3043 to 2094. [2020-12-23 09:33:29,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2094 states. [2020-12-23 09:33:29,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 3118 transitions. [2020-12-23 09:33:29,236 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 3118 transitions. Word has length 127 [2020-12-23 09:33:29,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:29,236 INFO L481 AbstractCegarLoop]: Abstraction has 2094 states and 3118 transitions. [2020-12-23 09:33:29,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:29,237 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 3118 transitions. [2020-12-23 09:33:29,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-23 09:33:29,238 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:29,238 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] [2020-12-23 09:33:29,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 09:33:29,239 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:29,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:29,239 INFO L82 PathProgramCache]: Analyzing trace with hash -770821840, now seen corresponding path program 1 times [2020-12-23 09:33:29,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:29,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139776770] [2020-12-23 09:33:29,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:29,314 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 09:33:29,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139776770] [2020-12-23 09:33:29,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:29,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:29,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127730520] [2020-12-23 09:33:29,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:29,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:29,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:29,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:29,317 INFO L87 Difference]: Start difference. First operand 2094 states and 3118 transitions. Second operand 4 states. [2020-12-23 09:33:29,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:29,563 INFO L93 Difference]: Finished difference Result 5119 states and 7613 transitions. [2020-12-23 09:33:29,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:29,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-12-23 09:33:29,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:29,580 INFO L225 Difference]: With dead ends: 5119 [2020-12-23 09:33:29,580 INFO L226 Difference]: Without dead ends: 3042 [2020-12-23 09:33:29,585 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 09:33:29,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2020-12-23 09:33:29,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 2094. [2020-12-23 09:33:29,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2094 states. [2020-12-23 09:33:29,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 3115 transitions. [2020-12-23 09:33:29,721 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 3115 transitions. Word has length 127 [2020-12-23 09:33:29,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:29,722 INFO L481 AbstractCegarLoop]: Abstraction has 2094 states and 3115 transitions. [2020-12-23 09:33:29,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:29,722 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 3115 transitions. [2020-12-23 09:33:29,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-23 09:33:29,724 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:29,724 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] [2020-12-23 09:33:29,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 09:33:29,724 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:29,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:29,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1876782514, now seen corresponding path program 1 times [2020-12-23 09:33:29,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:29,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808385919] [2020-12-23 09:33:29,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:29,793 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 09:33:29,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808385919] [2020-12-23 09:33:29,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:29,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:33:29,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303159475] [2020-12-23 09:33:29,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:33:29,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:29,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:33:29,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:33:29,797 INFO L87 Difference]: Start difference. First operand 2094 states and 3115 transitions. Second operand 3 states. [2020-12-23 09:33:29,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:29,920 INFO L93 Difference]: Finished difference Result 4170 states and 6203 transitions. [2020-12-23 09:33:29,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:33:29,921 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2020-12-23 09:33:29,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:29,933 INFO L225 Difference]: With dead ends: 4170 [2020-12-23 09:33:29,933 INFO L226 Difference]: Without dead ends: 2094 [2020-12-23 09:33:29,939 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 09:33:29,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2094 states. [2020-12-23 09:33:30,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2094 to 2094. [2020-12-23 09:33:30,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2094 states. [2020-12-23 09:33:30,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 3107 transitions. [2020-12-23 09:33:30,091 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 3107 transitions. Word has length 127 [2020-12-23 09:33:30,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:30,091 INFO L481 AbstractCegarLoop]: Abstraction has 2094 states and 3107 transitions. [2020-12-23 09:33:30,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:33:30,092 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 3107 transitions. [2020-12-23 09:33:30,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-23 09:33:30,093 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:30,093 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] [2020-12-23 09:33:30,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 09:33:30,094 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:30,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:30,094 INFO L82 PathProgramCache]: Analyzing trace with hash -231935954, now seen corresponding path program 1 times [2020-12-23 09:33:30,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:30,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439898508] [2020-12-23 09:33:30,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:30,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:30,150 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 09:33:30,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439898508] [2020-12-23 09:33:30,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:30,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:33:30,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981160370] [2020-12-23 09:33:30,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:33:30,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:30,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:33:30,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:33:30,153 INFO L87 Difference]: Start difference. First operand 2094 states and 3107 transitions. Second operand 3 states. [2020-12-23 09:33:30,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:30,288 INFO L93 Difference]: Finished difference Result 4169 states and 6186 transitions. [2020-12-23 09:33:30,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:33:30,289 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2020-12-23 09:33:30,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:30,300 INFO L225 Difference]: With dead ends: 4169 [2020-12-23 09:33:30,300 INFO L226 Difference]: Without dead ends: 2094 [2020-12-23 09:33:30,304 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 09:33:30,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2094 states. [2020-12-23 09:33:30,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2094 to 2094. [2020-12-23 09:33:30,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2094 states. [2020-12-23 09:33:30,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 3099 transitions. [2020-12-23 09:33:30,435 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 3099 transitions. Word has length 127 [2020-12-23 09:33:30,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:30,435 INFO L481 AbstractCegarLoop]: Abstraction has 2094 states and 3099 transitions. [2020-12-23 09:33:30,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:33:30,436 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 3099 transitions. [2020-12-23 09:33:30,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-23 09:33:30,437 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:30,437 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] [2020-12-23 09:33:30,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 09:33:30,438 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:30,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:30,438 INFO L82 PathProgramCache]: Analyzing trace with hash 115682866, now seen corresponding path program 1 times [2020-12-23 09:33:30,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:30,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145044813] [2020-12-23 09:33:30,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:30,503 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 09:33:30,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145044813] [2020-12-23 09:33:30,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:30,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:30,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196509965] [2020-12-23 09:33:30,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:30,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:30,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:30,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:30,511 INFO L87 Difference]: Start difference. First operand 2094 states and 3099 transitions. Second operand 4 states. [2020-12-23 09:33:30,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:30,774 INFO L93 Difference]: Finished difference Result 5113 states and 7561 transitions. [2020-12-23 09:33:30,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:30,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-12-23 09:33:30,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:30,789 INFO L225 Difference]: With dead ends: 5113 [2020-12-23 09:33:30,790 INFO L226 Difference]: Without dead ends: 3039 [2020-12-23 09:33:30,794 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 09:33:30,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3039 states. [2020-12-23 09:33:30,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3039 to 2094. [2020-12-23 09:33:30,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2094 states. [2020-12-23 09:33:30,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 3096 transitions. [2020-12-23 09:33:30,931 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 3096 transitions. Word has length 127 [2020-12-23 09:33:30,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:30,933 INFO L481 AbstractCegarLoop]: Abstraction has 2094 states and 3096 transitions. [2020-12-23 09:33:30,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:30,933 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 3096 transitions. [2020-12-23 09:33:30,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-23 09:33:30,934 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:30,934 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] [2020-12-23 09:33:30,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 09:33:30,935 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:30,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:30,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1857482512, now seen corresponding path program 1 times [2020-12-23 09:33:30,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:30,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355647686] [2020-12-23 09:33:30,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:30,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:31,006 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 09:33:31,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355647686] [2020-12-23 09:33:31,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:31,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:31,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088692680] [2020-12-23 09:33:31,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:31,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:31,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:31,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:31,009 INFO L87 Difference]: Start difference. First operand 2094 states and 3096 transitions. Second operand 4 states. [2020-12-23 09:33:31,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:31,246 INFO L93 Difference]: Finished difference Result 5109 states and 7547 transitions. [2020-12-23 09:33:31,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:31,246 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-12-23 09:33:31,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:31,263 INFO L225 Difference]: With dead ends: 5109 [2020-12-23 09:33:31,263 INFO L226 Difference]: Without dead ends: 3037 [2020-12-23 09:33:31,268 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 09:33:31,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3037 states. [2020-12-23 09:33:31,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3037 to 2094. [2020-12-23 09:33:31,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2094 states. [2020-12-23 09:33:31,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 3093 transitions. [2020-12-23 09:33:31,457 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 3093 transitions. Word has length 127 [2020-12-23 09:33:31,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:31,457 INFO L481 AbstractCegarLoop]: Abstraction has 2094 states and 3093 transitions. [2020-12-23 09:33:31,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:31,457 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 3093 transitions. [2020-12-23 09:33:31,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-23 09:33:31,459 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:31,459 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] [2020-12-23 09:33:31,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 09:33:31,460 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:31,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:31,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1814203182, now seen corresponding path program 1 times [2020-12-23 09:33:31,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:31,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726871750] [2020-12-23 09:33:31,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:31,521 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 09:33:31,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726871750] [2020-12-23 09:33:31,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:31,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:31,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752187475] [2020-12-23 09:33:31,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:31,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:31,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:31,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:31,524 INFO L87 Difference]: Start difference. First operand 2094 states and 3093 transitions. Second operand 4 states. [2020-12-23 09:33:31,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:31,821 INFO L93 Difference]: Finished difference Result 5107 states and 7537 transitions. [2020-12-23 09:33:31,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:31,821 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-12-23 09:33:31,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:31,838 INFO L225 Difference]: With dead ends: 5107 [2020-12-23 09:33:31,838 INFO L226 Difference]: Without dead ends: 3036 [2020-12-23 09:33:31,843 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 09:33:31,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3036 states. [2020-12-23 09:33:32,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3036 to 2094. [2020-12-23 09:33:32,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2094 states. [2020-12-23 09:33:32,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 3090 transitions. [2020-12-23 09:33:32,011 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 3090 transitions. Word has length 127 [2020-12-23 09:33:32,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:32,011 INFO L481 AbstractCegarLoop]: Abstraction has 2094 states and 3090 transitions. [2020-12-23 09:33:32,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:32,011 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 3090 transitions. [2020-12-23 09:33:32,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-23 09:33:32,013 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:32,013 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] [2020-12-23 09:33:32,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 09:33:32,014 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:32,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:32,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1932644656, now seen corresponding path program 1 times [2020-12-23 09:33:32,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:32,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136529598] [2020-12-23 09:33:32,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:32,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:32,097 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 09:33:32,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136529598] [2020-12-23 09:33:32,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:32,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:32,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738824899] [2020-12-23 09:33:32,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:32,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:32,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:32,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:32,101 INFO L87 Difference]: Start difference. First operand 2094 states and 3090 transitions. Second operand 4 states. [2020-12-23 09:33:32,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:32,437 INFO L93 Difference]: Finished difference Result 5035 states and 7427 transitions. [2020-12-23 09:33:32,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:32,438 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-12-23 09:33:32,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:32,457 INFO L225 Difference]: With dead ends: 5035 [2020-12-23 09:33:32,458 INFO L226 Difference]: Without dead ends: 2965 [2020-12-23 09:33:32,463 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 09:33:32,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2020-12-23 09:33:32,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 2094. [2020-12-23 09:33:32,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2094 states. [2020-12-23 09:33:32,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 3087 transitions. [2020-12-23 09:33:32,602 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 3087 transitions. Word has length 127 [2020-12-23 09:33:32,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:32,603 INFO L481 AbstractCegarLoop]: Abstraction has 2094 states and 3087 transitions. [2020-12-23 09:33:32,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:32,603 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 3087 transitions. [2020-12-23 09:33:32,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-23 09:33:32,604 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:32,604 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] [2020-12-23 09:33:32,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 09:33:32,605 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:32,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:32,606 INFO L82 PathProgramCache]: Analyzing trace with hash -973028626, now seen corresponding path program 1 times [2020-12-23 09:33:32,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:32,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365003638] [2020-12-23 09:33:32,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:32,662 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 09:33:32,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365003638] [2020-12-23 09:33:32,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:32,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:32,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507464261] [2020-12-23 09:33:32,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:32,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:32,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:32,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:32,665 INFO L87 Difference]: Start difference. First operand 2094 states and 3087 transitions. Second operand 4 states. [2020-12-23 09:33:33,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:33,000 INFO L93 Difference]: Finished difference Result 5033 states and 7417 transitions. [2020-12-23 09:33:33,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:33,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-12-23 09:33:33,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:33,008 INFO L225 Difference]: With dead ends: 5033 [2020-12-23 09:33:33,008 INFO L226 Difference]: Without dead ends: 2964 [2020-12-23 09:33:33,013 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 09:33:33,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2020-12-23 09:33:33,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 2094. [2020-12-23 09:33:33,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2094 states. [2020-12-23 09:33:33,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 3084 transitions. [2020-12-23 09:33:33,152 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 3084 transitions. Word has length 127 [2020-12-23 09:33:33,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:33,152 INFO L481 AbstractCegarLoop]: Abstraction has 2094 states and 3084 transitions. [2020-12-23 09:33:33,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:33,152 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 3084 transitions. [2020-12-23 09:33:33,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-23 09:33:33,154 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:33,154 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] [2020-12-23 09:33:33,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 09:33:33,155 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:33,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:33,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1288544624, now seen corresponding path program 1 times [2020-12-23 09:33:33,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:33,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110991338] [2020-12-23 09:33:33,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:33,201 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 09:33:33,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110991338] [2020-12-23 09:33:33,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:33,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:33:33,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788187804] [2020-12-23 09:33:33,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:33:33,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:33,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:33:33,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:33:33,204 INFO L87 Difference]: Start difference. First operand 2094 states and 3084 transitions. Second operand 3 states. [2020-12-23 09:33:33,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:33,387 INFO L93 Difference]: Finished difference Result 4162 states and 6132 transitions. [2020-12-23 09:33:33,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:33:33,388 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2020-12-23 09:33:33,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:33,393 INFO L225 Difference]: With dead ends: 4162 [2020-12-23 09:33:33,393 INFO L226 Difference]: Without dead ends: 2094 [2020-12-23 09:33:33,398 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 09:33:33,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2094 states. [2020-12-23 09:33:33,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2094 to 2094. [2020-12-23 09:33:33,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2094 states. [2020-12-23 09:33:33,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 3054 transitions. [2020-12-23 09:33:33,565 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 3054 transitions. Word has length 127 [2020-12-23 09:33:33,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:33,565 INFO L481 AbstractCegarLoop]: Abstraction has 2094 states and 3054 transitions. [2020-12-23 09:33:33,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:33:33,566 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 3054 transitions. [2020-12-23 09:33:33,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-23 09:33:33,567 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:33,567 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] [2020-12-23 09:33:33,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 09:33:33,568 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:33,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:33,568 INFO L82 PathProgramCache]: Analyzing trace with hash -359309332, now seen corresponding path program 1 times [2020-12-23 09:33:33,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:33,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323118541] [2020-12-23 09:33:33,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:33,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:33,619 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 09:33:33,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323118541] [2020-12-23 09:33:33,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:33,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:33,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125405569] [2020-12-23 09:33:33,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:33,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:33,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:33,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:33,622 INFO L87 Difference]: Start difference. First operand 2094 states and 3054 transitions. Second operand 4 states. [2020-12-23 09:33:33,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:33,967 INFO L93 Difference]: Finished difference Result 5029 states and 7333 transitions. [2020-12-23 09:33:33,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:33,968 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-12-23 09:33:33,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:33,974 INFO L225 Difference]: With dead ends: 5029 [2020-12-23 09:33:33,974 INFO L226 Difference]: Without dead ends: 2962 [2020-12-23 09:33:33,978 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 09:33:33,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2020-12-23 09:33:34,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 2094. [2020-12-23 09:33:34,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2094 states. [2020-12-23 09:33:34,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 3051 transitions. [2020-12-23 09:33:34,185 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 3051 transitions. Word has length 127 [2020-12-23 09:33:34,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:34,186 INFO L481 AbstractCegarLoop]: Abstraction has 2094 states and 3051 transitions. [2020-12-23 09:33:34,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:34,186 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 3051 transitions. [2020-12-23 09:33:34,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-23 09:33:34,187 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:34,188 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] [2020-12-23 09:33:34,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 09:33:34,188 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:34,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:34,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1666451730, now seen corresponding path program 1 times [2020-12-23 09:33:34,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:34,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044067277] [2020-12-23 09:33:34,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:34,247 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 09:33:34,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044067277] [2020-12-23 09:33:34,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:34,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:34,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366784723] [2020-12-23 09:33:34,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:34,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:34,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:34,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:34,250 INFO L87 Difference]: Start difference. First operand 2094 states and 3051 transitions. Second operand 4 states. [2020-12-23 09:33:34,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:34,624 INFO L93 Difference]: Finished difference Result 5027 states and 7323 transitions. [2020-12-23 09:33:34,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:34,624 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-12-23 09:33:34,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:34,631 INFO L225 Difference]: With dead ends: 5027 [2020-12-23 09:33:34,632 INFO L226 Difference]: Without dead ends: 2961 [2020-12-23 09:33:34,636 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 09:33:34,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-12-23 09:33:34,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 2094. [2020-12-23 09:33:34,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2094 states. [2020-12-23 09:33:34,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 3048 transitions. [2020-12-23 09:33:34,787 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 3048 transitions. Word has length 127 [2020-12-23 09:33:34,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:34,787 INFO L481 AbstractCegarLoop]: Abstraction has 2094 states and 3048 transitions. [2020-12-23 09:33:34,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:34,787 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 3048 transitions. [2020-12-23 09:33:34,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-23 09:33:34,788 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:34,789 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] [2020-12-23 09:33:34,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 09:33:34,789 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:34,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:34,790 INFO L82 PathProgramCache]: Analyzing trace with hash 231045036, now seen corresponding path program 1 times [2020-12-23 09:33:34,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:34,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444948208] [2020-12-23 09:33:34,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:34,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:34,862 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 09:33:34,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444948208] [2020-12-23 09:33:34,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:34,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:34,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452816960] [2020-12-23 09:33:34,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:34,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:34,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:34,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:34,865 INFO L87 Difference]: Start difference. First operand 2094 states and 3048 transitions. Second operand 4 states. [2020-12-23 09:33:35,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:35,201 INFO L93 Difference]: Finished difference Result 5023 states and 7309 transitions. [2020-12-23 09:33:35,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:35,201 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-12-23 09:33:35,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:35,208 INFO L225 Difference]: With dead ends: 5023 [2020-12-23 09:33:35,208 INFO L226 Difference]: Without dead ends: 2959 [2020-12-23 09:33:35,212 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 09:33:35,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2020-12-23 09:33:35,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 2094. [2020-12-23 09:33:35,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2094 states. [2020-12-23 09:33:35,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 3045 transitions. [2020-12-23 09:33:35,386 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 3045 transitions. Word has length 127 [2020-12-23 09:33:35,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:35,386 INFO L481 AbstractCegarLoop]: Abstraction has 2094 states and 3045 transitions. [2020-12-23 09:33:35,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:35,387 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 3045 transitions. [2020-12-23 09:33:35,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-23 09:33:35,387 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:35,388 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] [2020-12-23 09:33:35,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 09:33:35,388 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:35,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:35,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1675358230, now seen corresponding path program 1 times [2020-12-23 09:33:35,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:35,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463857822] [2020-12-23 09:33:35,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:35,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:35,452 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 09:33:35,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463857822] [2020-12-23 09:33:35,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:35,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:35,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266163306] [2020-12-23 09:33:35,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:35,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:35,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:35,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:35,459 INFO L87 Difference]: Start difference. First operand 2094 states and 3045 transitions. Second operand 4 states. [2020-12-23 09:33:35,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:35,844 INFO L93 Difference]: Finished difference Result 5021 states and 7299 transitions. [2020-12-23 09:33:35,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:35,844 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-12-23 09:33:35,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:35,851 INFO L225 Difference]: With dead ends: 5021 [2020-12-23 09:33:35,852 INFO L226 Difference]: Without dead ends: 2958 [2020-12-23 09:33:35,855 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 09:33:35,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2020-12-23 09:33:36,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 2094. [2020-12-23 09:33:36,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2094 states. [2020-12-23 09:33:36,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 3042 transitions. [2020-12-23 09:33:36,017 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 3042 transitions. Word has length 127 [2020-12-23 09:33:36,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:36,017 INFO L481 AbstractCegarLoop]: Abstraction has 2094 states and 3042 transitions. [2020-12-23 09:33:36,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:36,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 3042 transitions. [2020-12-23 09:33:36,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-23 09:33:36,018 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:36,018 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] [2020-12-23 09:33:36,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-23 09:33:36,019 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:36,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:36,019 INFO L82 PathProgramCache]: Analyzing trace with hash -74287124, now seen corresponding path program 1 times [2020-12-23 09:33:36,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:36,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849209275] [2020-12-23 09:33:36,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:36,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:36,068 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 09:33:36,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849209275] [2020-12-23 09:33:36,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:36,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:36,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369962173] [2020-12-23 09:33:36,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:36,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:36,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:36,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:36,071 INFO L87 Difference]: Start difference. First operand 2094 states and 3042 transitions. Second operand 4 states. [2020-12-23 09:33:36,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:36,443 INFO L93 Difference]: Finished difference Result 5019 states and 7289 transitions. [2020-12-23 09:33:36,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:36,444 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-12-23 09:33:36,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:36,452 INFO L225 Difference]: With dead ends: 5019 [2020-12-23 09:33:36,452 INFO L226 Difference]: Without dead ends: 2957 [2020-12-23 09:33:36,455 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 09:33:36,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2020-12-23 09:33:36,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 2094. [2020-12-23 09:33:36,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2094 states. [2020-12-23 09:33:36,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 3039 transitions. [2020-12-23 09:33:36,628 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 3039 transitions. Word has length 127 [2020-12-23 09:33:36,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:36,629 INFO L481 AbstractCegarLoop]: Abstraction has 2094 states and 3039 transitions. [2020-12-23 09:33:36,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:36,629 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 3039 transitions. [2020-12-23 09:33:36,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-23 09:33:36,631 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:36,631 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] [2020-12-23 09:33:36,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-23 09:33:36,631 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:36,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:36,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1131018326, now seen corresponding path program 1 times [2020-12-23 09:33:36,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:36,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088150126] [2020-12-23 09:33:36,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:36,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:33:36,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088150126] [2020-12-23 09:33:36,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:36,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:36,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867625061] [2020-12-23 09:33:36,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:36,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:36,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:36,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:36,731 INFO L87 Difference]: Start difference. First operand 2094 states and 3039 transitions. Second operand 4 states. [2020-12-23 09:33:37,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:37,164 INFO L93 Difference]: Finished difference Result 5017 states and 7279 transitions. [2020-12-23 09:33:37,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:37,165 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-12-23 09:33:37,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:37,172 INFO L225 Difference]: With dead ends: 5017 [2020-12-23 09:33:37,172 INFO L226 Difference]: Without dead ends: 2956 [2020-12-23 09:33:37,175 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 09:33:37,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-12-23 09:33:37,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 2094. [2020-12-23 09:33:37,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2094 states. [2020-12-23 09:33:37,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 3036 transitions. [2020-12-23 09:33:37,396 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 3036 transitions. Word has length 127 [2020-12-23 09:33:37,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:37,396 INFO L481 AbstractCegarLoop]: Abstraction has 2094 states and 3036 transitions. [2020-12-23 09:33:37,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:37,397 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 3036 transitions. [2020-12-23 09:33:37,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-23 09:33:37,398 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:37,398 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] [2020-12-23 09:33:37,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-23 09:33:37,398 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:37,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:37,399 INFO L82 PathProgramCache]: Analyzing trace with hash 220366892, now seen corresponding path program 1 times [2020-12-23 09:33:37,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:37,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631197317] [2020-12-23 09:33:37,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:37,458 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 09:33:37,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631197317] [2020-12-23 09:33:37,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:37,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:37,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155116371] [2020-12-23 09:33:37,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:37,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:37,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:37,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:37,461 INFO L87 Difference]: Start difference. First operand 2094 states and 3036 transitions. Second operand 4 states. [2020-12-23 09:33:38,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:38,210 INFO L93 Difference]: Finished difference Result 7864 states and 11375 transitions. [2020-12-23 09:33:38,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:38,211 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-12-23 09:33:38,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:38,225 INFO L225 Difference]: With dead ends: 7864 [2020-12-23 09:33:38,225 INFO L226 Difference]: Without dead ends: 5805 [2020-12-23 09:33:38,229 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 09:33:38,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5805 states. [2020-12-23 09:33:38,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5805 to 5535. [2020-12-23 09:33:38,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5535 states. [2020-12-23 09:33:38,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5535 states to 5535 states and 7943 transitions. [2020-12-23 09:33:38,709 INFO L78 Accepts]: Start accepts. Automaton has 5535 states and 7943 transitions. Word has length 127 [2020-12-23 09:33:38,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:38,710 INFO L481 AbstractCegarLoop]: Abstraction has 5535 states and 7943 transitions. [2020-12-23 09:33:38,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:38,710 INFO L276 IsEmpty]: Start isEmpty. Operand 5535 states and 7943 transitions. [2020-12-23 09:33:38,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-12-23 09:33:38,712 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:38,712 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:33:38,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-23 09:33:38,712 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:38,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:38,713 INFO L82 PathProgramCache]: Analyzing trace with hash 2100467592, now seen corresponding path program 1 times [2020-12-23 09:33:38,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:38,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121247922] [2020-12-23 09:33:38,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:38,768 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:33:38,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121247922] [2020-12-23 09:33:38,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:38,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:33:38,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981927762] [2020-12-23 09:33:38,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:33:38,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:38,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:33:38,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:33:38,770 INFO L87 Difference]: Start difference. First operand 5535 states and 7943 transitions. Second operand 5 states. [2020-12-23 09:33:39,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:39,793 INFO L93 Difference]: Finished difference Result 14599 states and 20993 transitions. [2020-12-23 09:33:39,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:33:39,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-12-23 09:33:39,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:39,821 INFO L225 Difference]: With dead ends: 14599 [2020-12-23 09:33:39,822 INFO L226 Difference]: Without dead ends: 9109 [2020-12-23 09:33:39,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:33:39,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9109 states. [2020-12-23 09:33:40,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9109 to 5604. [2020-12-23 09:33:40,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5604 states. [2020-12-23 09:33:40,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5604 states to 5604 states and 7971 transitions. [2020-12-23 09:33:40,429 INFO L78 Accepts]: Start accepts. Automaton has 5604 states and 7971 transitions. Word has length 147 [2020-12-23 09:33:40,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:40,430 INFO L481 AbstractCegarLoop]: Abstraction has 5604 states and 7971 transitions. [2020-12-23 09:33:40,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:33:40,430 INFO L276 IsEmpty]: Start isEmpty. Operand 5604 states and 7971 transitions. [2020-12-23 09:33:40,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-12-23 09:33:40,432 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:40,432 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:33:40,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-23 09:33:40,433 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:40,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:40,433 INFO L82 PathProgramCache]: Analyzing trace with hash 67073546, now seen corresponding path program 1 times [2020-12-23 09:33:40,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:40,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901027929] [2020-12-23 09:33:40,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:40,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:40,490 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:33:40,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901027929] [2020-12-23 09:33:40,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:40,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:33:40,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455763570] [2020-12-23 09:33:40,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:33:40,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:40,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:33:40,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:33:40,493 INFO L87 Difference]: Start difference. First operand 5604 states and 7971 transitions. Second operand 5 states. [2020-12-23 09:33:41,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:41,247 INFO L93 Difference]: Finished difference Result 12272 states and 17427 transitions. [2020-12-23 09:33:41,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:33:41,248 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-12-23 09:33:41,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:41,259 INFO L225 Difference]: With dead ends: 12272 [2020-12-23 09:33:41,259 INFO L226 Difference]: Without dead ends: 6720 [2020-12-23 09:33:41,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:33:41,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6720 states. [2020-12-23 09:33:41,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6720 to 5610. [2020-12-23 09:33:41,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5610 states. [2020-12-23 09:33:41,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5610 states to 5610 states and 7915 transitions. [2020-12-23 09:33:41,859 INFO L78 Accepts]: Start accepts. Automaton has 5610 states and 7915 transitions. Word has length 147 [2020-12-23 09:33:41,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:41,859 INFO L481 AbstractCegarLoop]: Abstraction has 5610 states and 7915 transitions. [2020-12-23 09:33:41,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:33:41,860 INFO L276 IsEmpty]: Start isEmpty. Operand 5610 states and 7915 transitions. [2020-12-23 09:33:41,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-12-23 09:33:41,861 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:41,863 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:33:41,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-23 09:33:41,863 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:41,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:41,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1668144652, now seen corresponding path program 1 times [2020-12-23 09:33:41,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:41,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760063453] [2020-12-23 09:33:41,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:41,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:41,959 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:33:41,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760063453] [2020-12-23 09:33:41,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:41,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:41,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782717379] [2020-12-23 09:33:41,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:41,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:41,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:41,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:41,961 INFO L87 Difference]: Start difference. First operand 5610 states and 7915 transitions. Second operand 4 states. [2020-12-23 09:33:43,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:43,300 INFO L93 Difference]: Finished difference Result 21413 states and 30174 transitions. [2020-12-23 09:33:43,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:43,301 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-12-23 09:33:43,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:43,326 INFO L225 Difference]: With dead ends: 21413 [2020-12-23 09:33:43,327 INFO L226 Difference]: Without dead ends: 15857 [2020-12-23 09:33:43,336 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 09:33:43,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15857 states. [2020-12-23 09:33:44,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15857 to 15245. [2020-12-23 09:33:44,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15245 states. [2020-12-23 09:33:44,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15245 states to 15245 states and 21330 transitions. [2020-12-23 09:33:44,531 INFO L78 Accepts]: Start accepts. Automaton has 15245 states and 21330 transitions. Word has length 147 [2020-12-23 09:33:44,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:44,531 INFO L481 AbstractCegarLoop]: Abstraction has 15245 states and 21330 transitions. [2020-12-23 09:33:44,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:44,532 INFO L276 IsEmpty]: Start isEmpty. Operand 15245 states and 21330 transitions. [2020-12-23 09:33:44,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-23 09:33:44,604 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:44,605 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:33:44,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-23 09:33:44,605 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:44,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:44,606 INFO L82 PathProgramCache]: Analyzing trace with hash -80535961, now seen corresponding path program 1 times [2020-12-23 09:33:44,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:44,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608450866] [2020-12-23 09:33:44,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:44,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:44,681 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:33:44,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608450866] [2020-12-23 09:33:44,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:44,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:33:44,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586097170] [2020-12-23 09:33:44,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:33:44,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:44,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:33:44,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:33:44,684 INFO L87 Difference]: Start difference. First operand 15245 states and 21330 transitions. Second operand 5 states. [2020-12-23 09:33:46,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:46,717 INFO L93 Difference]: Finished difference Result 39502 states and 55569 transitions. [2020-12-23 09:33:46,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:33:46,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-12-23 09:33:46,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:46,743 INFO L225 Difference]: With dead ends: 39502 [2020-12-23 09:33:46,743 INFO L226 Difference]: Without dead ends: 24315 [2020-12-23 09:33:46,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:33:46,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24315 states. [2020-12-23 09:33:48,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24315 to 15434. [2020-12-23 09:33:48,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15434 states. [2020-12-23 09:33:48,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15434 states to 15434 states and 21408 transitions. [2020-12-23 09:33:48,065 INFO L78 Accepts]: Start accepts. Automaton has 15434 states and 21408 transitions. Word has length 151 [2020-12-23 09:33:48,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:48,065 INFO L481 AbstractCegarLoop]: Abstraction has 15434 states and 21408 transitions. [2020-12-23 09:33:48,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:33:48,065 INFO L276 IsEmpty]: Start isEmpty. Operand 15434 states and 21408 transitions. [2020-12-23 09:33:48,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-23 09:33:48,068 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:48,068 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:33:48,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-23 09:33:48,068 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:48,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:48,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1270849257, now seen corresponding path program 1 times [2020-12-23 09:33:48,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:48,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751310701] [2020-12-23 09:33:48,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:48,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:48,165 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:33:48,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751310701] [2020-12-23 09:33:48,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:48,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:33:48,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788499050] [2020-12-23 09:33:48,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:33:48,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:48,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:33:48,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:33:48,168 INFO L87 Difference]: Start difference. First operand 15434 states and 21408 transitions. Second operand 5 states. [2020-12-23 09:33:51,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:51,797 INFO L93 Difference]: Finished difference Result 55050 states and 77133 transitions. [2020-12-23 09:33:51,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:33:51,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-12-23 09:33:51,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:51,841 INFO L225 Difference]: With dead ends: 55050 [2020-12-23 09:33:51,841 INFO L226 Difference]: Without dead ends: 39681 [2020-12-23 09:33:51,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:33:51,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39681 states. [2020-12-23 09:33:53,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39681 to 15956. [2020-12-23 09:33:53,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15956 states. [2020-12-23 09:33:53,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15956 states to 15956 states and 21930 transitions. [2020-12-23 09:33:53,478 INFO L78 Accepts]: Start accepts. Automaton has 15956 states and 21930 transitions. Word has length 151 [2020-12-23 09:33:53,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:53,478 INFO L481 AbstractCegarLoop]: Abstraction has 15956 states and 21930 transitions. [2020-12-23 09:33:53,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:33:53,479 INFO L276 IsEmpty]: Start isEmpty. Operand 15956 states and 21930 transitions. [2020-12-23 09:33:53,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-23 09:33:53,482 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:53,483 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:33:53,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-23 09:33:53,483 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:53,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:53,484 INFO L82 PathProgramCache]: Analyzing trace with hash 500115691, now seen corresponding path program 1 times [2020-12-23 09:33:53,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:53,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453967166] [2020-12-23 09:33:53,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:53,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:53,547 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:33:53,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453967166] [2020-12-23 09:33:53,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:53,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:53,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506911475] [2020-12-23 09:33:53,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:53,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:53,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:53,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:53,549 INFO L87 Difference]: Start difference. First operand 15956 states and 21930 transitions. Second operand 4 states. [2020-12-23 09:33:57,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:57,975 INFO L93 Difference]: Finished difference Result 61037 states and 83841 transitions. [2020-12-23 09:33:57,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:57,975 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-12-23 09:33:57,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:58,024 INFO L225 Difference]: With dead ends: 61037 [2020-12-23 09:33:58,025 INFO L226 Difference]: Without dead ends: 45151 [2020-12-23 09:33:58,051 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 09:33:58,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45151 states. [2020-12-23 09:34:02,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45151 to 43811. [2020-12-23 09:34:02,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43811 states. [2020-12-23 09:34:02,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43811 states to 43811 states and 59795 transitions. [2020-12-23 09:34:02,195 INFO L78 Accepts]: Start accepts. Automaton has 43811 states and 59795 transitions. Word has length 151 [2020-12-23 09:34:02,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:34:02,195 INFO L481 AbstractCegarLoop]: Abstraction has 43811 states and 59795 transitions. [2020-12-23 09:34:02,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:34:02,196 INFO L276 IsEmpty]: Start isEmpty. Operand 43811 states and 59795 transitions. [2020-12-23 09:34:02,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-12-23 09:34:02,201 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:34:02,202 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:34:02,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-23 09:34:02,202 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:34:02,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:34:02,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1848351046, now seen corresponding path program 1 times [2020-12-23 09:34:02,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:34:02,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998283495] [2020-12-23 09:34:02,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:34:02,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:34:02,275 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:34:02,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998283495] [2020-12-23 09:34:02,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:34:02,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:34:02,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406487878] [2020-12-23 09:34:02,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:34:02,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:34:02,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:34:02,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:34:02,278 INFO L87 Difference]: Start difference. First operand 43811 states and 59795 transitions. Second operand 5 states. [2020-12-23 09:34:08,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:34:08,620 INFO L93 Difference]: Finished difference Result 110990 states and 152510 transitions. [2020-12-23 09:34:08,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:34:08,621 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-12-23 09:34:08,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:34:08,699 INFO L225 Difference]: With dead ends: 110990 [2020-12-23 09:34:08,699 INFO L226 Difference]: Without dead ends: 67253 [2020-12-23 09:34:08,732 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 09:34:08,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67253 states. [2020-12-23 09:34:13,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67253 to 44330. [2020-12-23 09:34:13,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44330 states. [2020-12-23 09:34:13,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44330 states to 44330 states and 60011 transitions. [2020-12-23 09:34:13,247 INFO L78 Accepts]: Start accepts. Automaton has 44330 states and 60011 transitions. Word has length 155 [2020-12-23 09:34:13,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:34:13,248 INFO L481 AbstractCegarLoop]: Abstraction has 44330 states and 60011 transitions. [2020-12-23 09:34:13,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:34:13,248 INFO L276 IsEmpty]: Start isEmpty. Operand 44330 states and 60011 transitions. [2020-12-23 09:34:13,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-12-23 09:34:13,254 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:34:13,255 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:34:13,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-23 09:34:13,255 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:34:13,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:34:13,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1262074824, now seen corresponding path program 1 times [2020-12-23 09:34:13,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:34:13,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548656123] [2020-12-23 09:34:13,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:34:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:34:13,336 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:34:13,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548656123] [2020-12-23 09:34:13,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:34:13,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:34:13,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012326224] [2020-12-23 09:34:13,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:34:13,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:34:13,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:34:13,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:34:13,338 INFO L87 Difference]: Start difference. First operand 44330 states and 60011 transitions. Second operand 5 states. [2020-12-23 09:34:23,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:34:23,530 INFO L93 Difference]: Finished difference Result 151026 states and 207034 transitions. [2020-12-23 09:34:23,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:34:23,531 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-12-23 09:34:23,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:34:23,663 INFO L225 Difference]: With dead ends: 151026 [2020-12-23 09:34:23,664 INFO L226 Difference]: Without dead ends: 106777 [2020-12-23 09:34:23,706 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 09:34:23,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106777 states. [2020-12-23 09:34:28,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106777 to 45758. [2020-12-23 09:34:28,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45758 states. [2020-12-23 09:34:28,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45758 states to 45758 states and 61439 transitions. [2020-12-23 09:34:28,986 INFO L78 Accepts]: Start accepts. Automaton has 45758 states and 61439 transitions. Word has length 155 [2020-12-23 09:34:28,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:34:28,986 INFO L481 AbstractCegarLoop]: Abstraction has 45758 states and 61439 transitions. [2020-12-23 09:34:28,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:34:28,986 INFO L276 IsEmpty]: Start isEmpty. Operand 45758 states and 61439 transitions. [2020-12-23 09:34:28,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-12-23 09:34:28,992 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:34:28,992 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:34:28,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-23 09:34:28,992 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:34:28,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:34:28,993 INFO L82 PathProgramCache]: Analyzing trace with hash 204236746, now seen corresponding path program 1 times [2020-12-23 09:34:28,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:34:28,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496202945] [2020-12-23 09:34:28,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:34:29,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:34:29,069 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:34:29,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496202945] [2020-12-23 09:34:29,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:34:29,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:34:29,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987442522] [2020-12-23 09:34:29,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:34:29,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:34:29,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:34:29,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:34:29,071 INFO L87 Difference]: Start difference. First operand 45758 states and 61439 transitions. Second operand 4 states. [2020-12-23 09:34:42,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:34:42,400 INFO L93 Difference]: Finished difference Result 174369 states and 234140 transitions. [2020-12-23 09:34:42,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:34:42,400 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-12-23 09:34:42,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:34:42,576 INFO L225 Difference]: With dead ends: 174369 [2020-12-23 09:34:42,576 INFO L226 Difference]: Without dead ends: 128697 [2020-12-23 09:34:42,622 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 09:34:42,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128697 states. [2020-12-23 09:34:55,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128697 to 125989. [2020-12-23 09:34:55,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125989 states. [2020-12-23 09:34:56,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125989 states to 125989 states and 168216 transitions. [2020-12-23 09:34:56,138 INFO L78 Accepts]: Start accepts. Automaton has 125989 states and 168216 transitions. Word has length 155 [2020-12-23 09:34:56,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:34:56,139 INFO L481 AbstractCegarLoop]: Abstraction has 125989 states and 168216 transitions. [2020-12-23 09:34:56,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:34:56,139 INFO L276 IsEmpty]: Start isEmpty. Operand 125989 states and 168216 transitions. [2020-12-23 09:34:56,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-12-23 09:34:56,148 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:34:56,148 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:34:56,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-23 09:34:56,148 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:34:56,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:34:56,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1887348773, now seen corresponding path program 1 times [2020-12-23 09:34:56,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:34:56,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345827236] [2020-12-23 09:34:56,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:34:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:34:56,241 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:34:56,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345827236] [2020-12-23 09:34:56,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:34:56,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:34:56,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211459013] [2020-12-23 09:34:56,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:34:56,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:34:56,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:34:56,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:34:56,243 INFO L87 Difference]: Start difference. First operand 125989 states and 168216 transitions. Second operand 5 states. [2020-12-23 09:35:16,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:35:16,279 INFO L93 Difference]: Finished difference Result 312350 states and 419973 transitions. [2020-12-23 09:35:16,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:35:16,280 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-12-23 09:35:16,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:35:16,534 INFO L225 Difference]: With dead ends: 312350 [2020-12-23 09:35:16,534 INFO L226 Difference]: Without dead ends: 186451 [2020-12-23 09:35:16,864 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 09:35:17,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186451 states. [2020-12-23 09:35:31,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186451 to 127414. [2020-12-23 09:35:31,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127414 states. [2020-12-23 09:35:31,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127414 states to 127414 states and 168814 transitions. [2020-12-23 09:35:31,724 INFO L78 Accepts]: Start accepts. Automaton has 127414 states and 168814 transitions. Word has length 159 [2020-12-23 09:35:31,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:35:31,724 INFO L481 AbstractCegarLoop]: Abstraction has 127414 states and 168814 transitions. [2020-12-23 09:35:31,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:35:31,724 INFO L276 IsEmpty]: Start isEmpty. Operand 127414 states and 168814 transitions. [2020-12-23 09:35:31,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-12-23 09:35:31,732 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:35:31,732 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:35:31,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-23 09:35:31,733 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:35:31,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:35:31,734 INFO L82 PathProgramCache]: Analyzing trace with hash 2127588519, now seen corresponding path program 1 times [2020-12-23 09:35:31,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:35:31,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440501221] [2020-12-23 09:35:31,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:35:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:35:32,041 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:35:32,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440501221] [2020-12-23 09:35:32,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:35:32,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:35:32,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60161134] [2020-12-23 09:35:32,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:35:32,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:35:32,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:35:32,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:35:32,044 INFO L87 Difference]: Start difference. First operand 127414 states and 168814 transitions. Second operand 4 states.