/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/systemc/token_ring.07.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 09:32:20,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 09:32:20,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 09:32:21,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 09:32:21,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 09:32:21,006 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 09:32:21,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 09:32:21,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 09:32:21,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 09:32:21,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 09:32:21,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 09:32:21,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 09:32:21,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 09:32:21,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 09:32:21,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 09:32:21,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 09:32:21,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 09:32:21,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 09:32:21,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 09:32:21,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 09:32:21,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 09:32:21,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 09:32:21,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 09:32:21,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 09:32:21,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 09:32:21,061 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 09:32:21,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 09:32:21,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 09:32:21,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 09:32:21,064 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 09:32:21,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 09:32:21,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 09:32:21,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 09:32:21,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 09:32:21,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 09:32:21,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 09:32:21,071 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 09:32:21,071 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 09:32:21,072 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 09:32:21,073 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 09:32:21,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 09:32:21,075 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 09:32:21,104 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 09:32:21,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 09:32:21,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 09:32:21,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 09:32:21,108 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 09:32:21,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 09:32:21,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 09:32:21,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 09:32:21,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 09:32:21,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 09:32:21,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 09:32:21,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 09:32:21,112 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 09:32:21,112 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 09:32:21,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 09:32:21,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 09:32:21,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 09:32:21,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 09:32:21,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 09:32:21,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 09:32:21,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 09:32:21,115 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 09:32:21,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 09:32:21,116 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 09:32:21,117 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 09:32:21,117 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 09:32:21,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 09:32:21,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 09:32:21,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 09:32:21,586 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 09:32:21,587 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 09:32:21,588 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.07.cil-1.c [2020-12-23 09:32:21,666 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d0bd4fb47/5c31a494b85546db91913b725614ac65/FLAG0c5a2f90b [2020-12-23 09:32:22,270 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 09:32:22,271 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.07.cil-1.c [2020-12-23 09:32:22,295 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d0bd4fb47/5c31a494b85546db91913b725614ac65/FLAG0c5a2f90b [2020-12-23 09:32:22,618 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d0bd4fb47/5c31a494b85546db91913b725614ac65 [2020-12-23 09:32:22,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 09:32:22,625 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 09:32:22,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 09:32:22,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 09:32:22,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 09:32:22,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:32:22" (1/1) ... [2020-12-23 09:32:22,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62932cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:22, skipping insertion in model container [2020-12-23 09:32:22,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:32:22" (1/1) ... [2020-12-23 09:32:22,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 09:32:22,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 09:32:22,903 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.07.cil-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_M~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_M~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__retres1~0,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~0,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~1,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~1,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~2,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~2,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~3,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~3,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~4,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~4,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~5,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~5,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~6,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~6,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~7,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~7,] left hand side expression in assignment: lhs: VariableLHS[~m_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t3_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t3_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t4_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t4_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t5_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t5_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t6_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t6_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t7_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t7_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp_ndt_1~0,] left hand side expression in assignment: lhs: VariableLHS[~m_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp_ndt_2~0,] left hand side expression in assignment: lhs: VariableLHS[~t1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp_ndt_3~0,] left hand side expression in assignment: lhs: VariableLHS[~t2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp_ndt_4~0,] left hand side expression in assignment: lhs: VariableLHS[~t3_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp_ndt_5~0,] left hand side expression in assignment: lhs: VariableLHS[~t4_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp_ndt_6~0,] left hand side expression in assignment: lhs: VariableLHS[~t5_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp_ndt_7~0,] left hand side expression in assignment: lhs: VariableLHS[~t6_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp_ndt_8~0,] left hand side expression in assignment: lhs: VariableLHS[~t7_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~M_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T1_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T2_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T3_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T4_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T5_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T6_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T7_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_M~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_7~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~M_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T1_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T2_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T3_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T4_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T5_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T6_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T7_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_M~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_7~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~m_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~t1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~t2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~t3_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~t4_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~t5_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~t6_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___6~0,] left hand side expression in assignment: lhs: VariableLHS[~t7_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~M_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~M_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T1_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T2_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T3_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T4_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T5_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T6_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T7_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_M~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_7~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t1_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t2_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t3_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t4_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t5_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t6_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t7_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~__retres2~0,] left hand side expression in assignment: lhs: VariableLHS[~__retres2~0,] left hand side expression in assignment: lhs: VariableLHS[~kernel_st~0,] left hand side expression in assignment: lhs: VariableLHS[~kernel_st~0,] left hand side expression in assignment: lhs: VariableLHS[~kernel_st~0,] left hand side expression in assignment: lhs: VariableLHS[~kernel_st~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~3,] left hand side expression in assignment: lhs: VariableLHS[~kernel_st~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~1,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~9,] [2020-12-23 09:32:23,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:32:23,117 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 09:32:23,128 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.07.cil-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_M~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_M~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__retres1~0,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~0,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~1,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~1,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~2,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~2,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~3,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~3,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~4,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~4,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~5,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~5,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~6,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~6,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~7,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~7,] left hand side expression in assignment: lhs: VariableLHS[~m_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t3_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t3_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t4_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t4_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t5_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t5_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t6_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t6_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t7_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t7_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~8,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp_ndt_1~0,] left hand side expression in assignment: lhs: VariableLHS[~m_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp_ndt_2~0,] left hand side expression in assignment: lhs: VariableLHS[~t1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp_ndt_3~0,] left hand side expression in assignment: lhs: VariableLHS[~t2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp_ndt_4~0,] left hand side expression in assignment: lhs: VariableLHS[~t3_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp_ndt_5~0,] left hand side expression in assignment: lhs: VariableLHS[~t4_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp_ndt_6~0,] left hand side expression in assignment: lhs: VariableLHS[~t5_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp_ndt_7~0,] left hand side expression in assignment: lhs: VariableLHS[~t6_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp_ndt_8~0,] left hand side expression in assignment: lhs: VariableLHS[~t7_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~M_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T1_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T2_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T3_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T4_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T5_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T6_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T7_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_M~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_7~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~M_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T1_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T2_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T3_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T4_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T5_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T6_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T7_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_M~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_7~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~m_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~t1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~t2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~t3_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~t4_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~t5_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~t6_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___6~0,] left hand side expression in assignment: lhs: VariableLHS[~t7_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~M_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~M_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T1_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T2_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T3_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T4_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T5_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T6_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~T7_E~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_M~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_7~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t1_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t2_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t3_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t4_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t5_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t6_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t7_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~__retres2~0,] left hand side expression in assignment: lhs: VariableLHS[~__retres2~0,] left hand side expression in assignment: lhs: VariableLHS[~kernel_st~0,] left hand side expression in assignment: lhs: VariableLHS[~kernel_st~0,] left hand side expression in assignment: lhs: VariableLHS[~kernel_st~0,] left hand side expression in assignment: lhs: VariableLHS[~kernel_st~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~3,] left hand side expression in assignment: lhs: VariableLHS[~kernel_st~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~1,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~9,] [2020-12-23 09:32:23,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:32:23,219 INFO L208 MainTranslator]: Completed translation [2020-12-23 09:32:23,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:23 WrapperNode [2020-12-23 09:32:23,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 09:32:23,221 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 09:32:23,221 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 09:32:23,221 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 09:32:23,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:23" (1/1) ... [2020-12-23 09:32:23,243 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:23" (1/1) ... [2020-12-23 09:32:23,381 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 09:32:23,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 09:32:23,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 09:32:23,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 09:32:23,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:23" (1/1) ... [2020-12-23 09:32:23,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:23" (1/1) ... [2020-12-23 09:32:23,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:23" (1/1) ... [2020-12-23 09:32:23,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:23" (1/1) ... [2020-12-23 09:32:23,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:23" (1/1) ... [2020-12-23 09:32:23,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:23" (1/1) ... [2020-12-23 09:32:23,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:23" (1/1) ... [2020-12-23 09:32:23,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 09:32:23,506 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 09:32:23,506 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 09:32:23,506 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 09:32:23,507 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:23" (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 09:32:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 09:32:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 09:32:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 09:32:23,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 09:32:25,298 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 09:32:25,299 INFO L299 CfgBuilder]: Removed 278 assume(true) statements. [2020-12-23 09:32:25,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:32:25 BoogieIcfgContainer [2020-12-23 09:32:25,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 09:32:25,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 09:32:25,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 09:32:25,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 09:32:25,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 09:32:22" (1/3) ... [2020-12-23 09:32:25,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@441680c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:32:25, skipping insertion in model container [2020-12-23 09:32:25,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:32:23" (2/3) ... [2020-12-23 09:32:25,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@441680c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:32:25, skipping insertion in model container [2020-12-23 09:32:25,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:32:25" (3/3) ... [2020-12-23 09:32:25,317 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.07.cil-1.c [2020-12-23 09:32:25,325 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 09:32:25,331 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 09:32:25,350 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 09:32:25,391 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 09:32:25,391 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 09:32:25,391 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 09:32:25,392 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 09:32:25,392 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 09:32:25,392 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 09:32:25,392 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 09:32:25,392 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 09:32:25,426 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-12-23 09:32:25,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 09:32:25,439 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:25,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:25,440 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:25,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:25,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1880548039, now seen corresponding path program 1 times [2020-12-23 09:32:25,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:25,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265527872] [2020-12-23 09:32:25,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:25,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:32:25,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265527872] [2020-12-23 09:32:25,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:25,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:25,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071285547] [2020-12-23 09:32:25,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:32:25,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:25,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:32:25,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:32:25,750 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 3 states. [2020-12-23 09:32:25,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:25,890 INFO L93 Difference]: Finished difference Result 1621 states and 2483 transitions. [2020-12-23 09:32:25,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:32:25,892 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-23 09:32:25,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:25,924 INFO L225 Difference]: With dead ends: 1621 [2020-12-23 09:32:25,925 INFO L226 Difference]: Without dead ends: 809 [2020-12-23 09:32:25,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:32:25,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2020-12-23 09:32:26,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 809. [2020-12-23 09:32:26,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 809 states. [2020-12-23 09:32:26,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1219 transitions. [2020-12-23 09:32:26,084 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1219 transitions. Word has length 105 [2020-12-23 09:32:26,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:26,085 INFO L481 AbstractCegarLoop]: Abstraction has 809 states and 1219 transitions. [2020-12-23 09:32:26,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:32:26,085 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1219 transitions. [2020-12-23 09:32:26,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 09:32:26,096 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:26,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:26,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 09:32:26,097 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:26,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:26,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1107276859, now seen corresponding path program 1 times [2020-12-23 09:32:26,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:26,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707333629] [2020-12-23 09:32:26,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:26,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:26,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:32:26,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707333629] [2020-12-23 09:32:26,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:26,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:32:26,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468763081] [2020-12-23 09:32:26,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:32:26,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:26,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:32:26,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:32:26,241 INFO L87 Difference]: Start difference. First operand 809 states and 1219 transitions. Second operand 3 states. [2020-12-23 09:32:26,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:26,342 INFO L93 Difference]: Finished difference Result 2259 states and 3393 transitions. [2020-12-23 09:32:26,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:32:26,343 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-23 09:32:26,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:26,353 INFO L225 Difference]: With dead ends: 2259 [2020-12-23 09:32:26,354 INFO L226 Difference]: Without dead ends: 1462 [2020-12-23 09:32:26,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:32:26,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2020-12-23 09:32:26,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1460. [2020-12-23 09:32:26,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1460 states. [2020-12-23 09:32:26,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 2189 transitions. [2020-12-23 09:32:26,426 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 2189 transitions. Word has length 105 [2020-12-23 09:32:26,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:26,428 INFO L481 AbstractCegarLoop]: Abstraction has 1460 states and 2189 transitions. [2020-12-23 09:32:26,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:32:26,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 2189 transitions. [2020-12-23 09:32:26,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 09:32:26,432 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:26,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:26,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 09:32:26,433 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:26,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:26,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1591347777, now seen corresponding path program 1 times [2020-12-23 09:32:26,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:26,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508147857] [2020-12-23 09:32:26,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:26,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:32:26,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508147857] [2020-12-23 09:32:26,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:26,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:26,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277330330] [2020-12-23 09:32:26,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:26,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:26,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:26,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:26,591 INFO L87 Difference]: Start difference. First operand 1460 states and 2189 transitions. Second operand 4 states. [2020-12-23 09:32:26,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:26,748 INFO L93 Difference]: Finished difference Result 3557 states and 5324 transitions. [2020-12-23 09:32:26,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:26,749 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-23 09:32:26,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:26,760 INFO L225 Difference]: With dead ends: 3557 [2020-12-23 09:32:26,760 INFO L226 Difference]: Without dead ends: 2111 [2020-12-23 09:32:26,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:32:26,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2111 states. [2020-12-23 09:32:26,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2111 to 1460. [2020-12-23 09:32:26,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1460 states. [2020-12-23 09:32:26,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 2186 transitions. [2020-12-23 09:32:26,848 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 2186 transitions. Word has length 105 [2020-12-23 09:32:26,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:26,856 INFO L481 AbstractCegarLoop]: Abstraction has 1460 states and 2186 transitions. [2020-12-23 09:32:26,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:26,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 2186 transitions. [2020-12-23 09:32:26,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 09:32:26,857 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:26,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:26,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 09:32:26,861 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:26,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:26,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1562847487, now seen corresponding path program 1 times [2020-12-23 09:32:26,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:26,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904045536] [2020-12-23 09:32:26,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:26,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:32:26,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904045536] [2020-12-23 09:32:26,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:26,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:26,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163027992] [2020-12-23 09:32:26,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:26,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:26,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:26,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:26,984 INFO L87 Difference]: Start difference. First operand 1460 states and 2186 transitions. Second operand 4 states. [2020-12-23 09:32:27,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:27,134 INFO L93 Difference]: Finished difference Result 3555 states and 5314 transitions. [2020-12-23 09:32:27,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:27,135 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-23 09:32:27,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:27,146 INFO L225 Difference]: With dead ends: 3555 [2020-12-23 09:32:27,146 INFO L226 Difference]: Without dead ends: 2110 [2020-12-23 09:32:27,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:32:27,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2020-12-23 09:32:27,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 1460. [2020-12-23 09:32:27,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1460 states. [2020-12-23 09:32:27,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 2183 transitions. [2020-12-23 09:32:27,227 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 2183 transitions. Word has length 105 [2020-12-23 09:32:27,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:27,227 INFO L481 AbstractCegarLoop]: Abstraction has 1460 states and 2183 transitions. [2020-12-23 09:32:27,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:27,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 2183 transitions. [2020-12-23 09:32:27,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 09:32:27,228 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:27,228 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:27,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 09:32:27,229 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:27,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:27,230 INFO L82 PathProgramCache]: Analyzing trace with hash -377734527, now seen corresponding path program 1 times [2020-12-23 09:32:27,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:27,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132318526] [2020-12-23 09:32:27,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:27,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:32:27,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132318526] [2020-12-23 09:32:27,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:27,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:32:27,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659971502] [2020-12-23 09:32:27,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:32:27,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:27,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:32:27,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:32:27,341 INFO L87 Difference]: Start difference. First operand 1460 states and 2183 transitions. Second operand 3 states. [2020-12-23 09:32:27,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:27,449 INFO L93 Difference]: Finished difference Result 2904 states and 4341 transitions. [2020-12-23 09:32:27,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:32:27,449 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-23 09:32:27,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:27,456 INFO L225 Difference]: With dead ends: 2904 [2020-12-23 09:32:27,457 INFO L226 Difference]: Without dead ends: 1460 [2020-12-23 09:32:27,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:32:27,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2020-12-23 09:32:27,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1460. [2020-12-23 09:32:27,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1460 states. [2020-12-23 09:32:27,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 2175 transitions. [2020-12-23 09:32:27,536 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 2175 transitions. Word has length 105 [2020-12-23 09:32:27,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:27,537 INFO L481 AbstractCegarLoop]: Abstraction has 1460 states and 2175 transitions. [2020-12-23 09:32:27,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:32:27,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 2175 transitions. [2020-12-23 09:32:27,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 09:32:27,538 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:27,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:27,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 09:32:27,538 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:27,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:27,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1561368317, now seen corresponding path program 1 times [2020-12-23 09:32:27,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:27,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600124694] [2020-12-23 09:32:27,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:27,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:27,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:32:27,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600124694] [2020-12-23 09:32:27,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:27,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:32:27,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555048394] [2020-12-23 09:32:27,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:32:27,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:27,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:32:27,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:32:27,615 INFO L87 Difference]: Start difference. First operand 1460 states and 2175 transitions. Second operand 3 states. [2020-12-23 09:32:27,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:27,720 INFO L93 Difference]: Finished difference Result 2903 states and 4324 transitions. [2020-12-23 09:32:27,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:32:27,720 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-23 09:32:27,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:27,728 INFO L225 Difference]: With dead ends: 2903 [2020-12-23 09:32:27,728 INFO L226 Difference]: Without dead ends: 1460 [2020-12-23 09:32:27,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:32:27,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2020-12-23 09:32:27,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1460. [2020-12-23 09:32:27,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1460 states. [2020-12-23 09:32:27,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 2167 transitions. [2020-12-23 09:32:27,842 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 2167 transitions. Word has length 105 [2020-12-23 09:32:27,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:27,843 INFO L481 AbstractCegarLoop]: Abstraction has 1460 states and 2167 transitions. [2020-12-23 09:32:27,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:32:27,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 2167 transitions. [2020-12-23 09:32:27,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 09:32:27,850 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:27,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:27,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 09:32:27,851 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:27,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:27,858 INFO L82 PathProgramCache]: Analyzing trace with hash 931183361, now seen corresponding path program 1 times [2020-12-23 09:32:27,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:27,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440798545] [2020-12-23 09:32:27,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:27,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:27,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:32:27,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440798545] [2020-12-23 09:32:27,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:27,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:27,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437924125] [2020-12-23 09:32:27,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:27,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:27,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:27,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:27,976 INFO L87 Difference]: Start difference. First operand 1460 states and 2167 transitions. Second operand 4 states. [2020-12-23 09:32:28,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:28,225 INFO L93 Difference]: Finished difference Result 3549 states and 5262 transitions. [2020-12-23 09:32:28,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:28,226 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-23 09:32:28,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:28,238 INFO L225 Difference]: With dead ends: 3549 [2020-12-23 09:32:28,239 INFO L226 Difference]: Without dead ends: 2107 [2020-12-23 09:32:28,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:32:28,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2107 states. [2020-12-23 09:32:28,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2107 to 1460. [2020-12-23 09:32:28,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1460 states. [2020-12-23 09:32:28,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 2164 transitions. [2020-12-23 09:32:28,343 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 2164 transitions. Word has length 105 [2020-12-23 09:32:28,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:28,343 INFO L481 AbstractCegarLoop]: Abstraction has 1460 states and 2164 transitions. [2020-12-23 09:32:28,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:28,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 2164 transitions. [2020-12-23 09:32:28,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 09:32:28,345 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:28,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:28,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 09:32:28,345 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:28,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:28,347 INFO L82 PathProgramCache]: Analyzing trace with hash -63510337, now seen corresponding path program 1 times [2020-12-23 09:32:28,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:28,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667785846] [2020-12-23 09:32:28,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:28,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:32:28,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667785846] [2020-12-23 09:32:28,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:28,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:28,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293572036] [2020-12-23 09:32:28,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:28,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:28,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:28,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:28,419 INFO L87 Difference]: Start difference. First operand 1460 states and 2164 transitions. Second operand 4 states. [2020-12-23 09:32:28,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:28,628 INFO L93 Difference]: Finished difference Result 3547 states and 5252 transitions. [2020-12-23 09:32:28,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:28,629 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-23 09:32:28,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:28,639 INFO L225 Difference]: With dead ends: 3547 [2020-12-23 09:32:28,640 INFO L226 Difference]: Without dead ends: 2106 [2020-12-23 09:32:28,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:32:28,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2020-12-23 09:32:28,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 1460. [2020-12-23 09:32:28,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1460 states. [2020-12-23 09:32:28,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 2161 transitions. [2020-12-23 09:32:28,749 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 2161 transitions. Word has length 105 [2020-12-23 09:32:28,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:28,749 INFO L481 AbstractCegarLoop]: Abstraction has 1460 states and 2161 transitions. [2020-12-23 09:32:28,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:28,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 2161 transitions. [2020-12-23 09:32:28,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 09:32:28,751 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:28,751 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:28,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 09:32:28,751 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:28,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:28,752 INFO L82 PathProgramCache]: Analyzing trace with hash -649786559, now seen corresponding path program 1 times [2020-12-23 09:32:28,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:28,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756825774] [2020-12-23 09:32:28,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:28,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:28,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:32:28,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756825774] [2020-12-23 09:32:28,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:28,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:28,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827313444] [2020-12-23 09:32:28,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:28,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:28,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:28,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:28,806 INFO L87 Difference]: Start difference. First operand 1460 states and 2161 transitions. Second operand 4 states. [2020-12-23 09:32:29,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:29,068 INFO L93 Difference]: Finished difference Result 3489 states and 5162 transitions. [2020-12-23 09:32:29,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:29,069 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-23 09:32:29,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:29,079 INFO L225 Difference]: With dead ends: 3489 [2020-12-23 09:32:29,079 INFO L226 Difference]: Without dead ends: 2049 [2020-12-23 09:32:29,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:32:29,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2049 states. [2020-12-23 09:32:29,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2049 to 1460. [2020-12-23 09:32:29,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1460 states. [2020-12-23 09:32:29,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 2158 transitions. [2020-12-23 09:32:29,203 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 2158 transitions. Word has length 105 [2020-12-23 09:32:29,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:29,205 INFO L481 AbstractCegarLoop]: Abstraction has 1460 states and 2158 transitions. [2020-12-23 09:32:29,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:29,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 2158 transitions. [2020-12-23 09:32:29,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 09:32:29,206 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:29,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:29,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 09:32:29,207 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:29,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:29,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1686605951, now seen corresponding path program 1 times [2020-12-23 09:32:29,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:29,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175094169] [2020-12-23 09:32:29,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:29,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:29,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:32:29,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175094169] [2020-12-23 09:32:29,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:29,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:32:29,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658946410] [2020-12-23 09:32:29,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:32:29,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:29,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:32:29,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:32:29,262 INFO L87 Difference]: Start difference. First operand 1460 states and 2158 transitions. Second operand 3 states. [2020-12-23 09:32:29,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:29,399 INFO L93 Difference]: Finished difference Result 2898 states and 4284 transitions. [2020-12-23 09:32:29,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:32:29,401 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-23 09:32:29,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:29,408 INFO L225 Difference]: With dead ends: 2898 [2020-12-23 09:32:29,408 INFO L226 Difference]: Without dead ends: 1460 [2020-12-23 09:32:29,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:32:29,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2020-12-23 09:32:29,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1460. [2020-12-23 09:32:29,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1460 states. [2020-12-23 09:32:29,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 2132 transitions. [2020-12-23 09:32:29,514 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 2132 transitions. Word has length 105 [2020-12-23 09:32:29,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:29,514 INFO L481 AbstractCegarLoop]: Abstraction has 1460 states and 2132 transitions. [2020-12-23 09:32:29,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:32:29,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 2132 transitions. [2020-12-23 09:32:29,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 09:32:29,516 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:29,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:29,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 09:32:29,516 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:29,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:29,517 INFO L82 PathProgramCache]: Analyzing trace with hash -192524995, now seen corresponding path program 1 times [2020-12-23 09:32:29,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:29,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083547469] [2020-12-23 09:32:29,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:29,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:32:29,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083547469] [2020-12-23 09:32:29,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:29,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:29,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432557627] [2020-12-23 09:32:29,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:29,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:29,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:29,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:29,574 INFO L87 Difference]: Start difference. First operand 1460 states and 2132 transitions. Second operand 4 states. [2020-12-23 09:32:29,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:29,849 INFO L93 Difference]: Finished difference Result 3483 states and 5084 transitions. [2020-12-23 09:32:29,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:29,849 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-23 09:32:29,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:29,863 INFO L225 Difference]: With dead ends: 3483 [2020-12-23 09:32:29,863 INFO L226 Difference]: Without dead ends: 2046 [2020-12-23 09:32:29,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:32:29,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2046 states. [2020-12-23 09:32:29,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2046 to 1460. [2020-12-23 09:32:29,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1460 states. [2020-12-23 09:32:29,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 2129 transitions. [2020-12-23 09:32:29,973 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 2129 transitions. Word has length 105 [2020-12-23 09:32:29,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:29,973 INFO L481 AbstractCegarLoop]: Abstraction has 1460 states and 2129 transitions. [2020-12-23 09:32:29,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:29,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 2129 transitions. [2020-12-23 09:32:29,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 09:32:29,975 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:29,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:29,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 09:32:29,976 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:29,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:29,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1132331199, now seen corresponding path program 1 times [2020-12-23 09:32:29,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:29,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247674315] [2020-12-23 09:32:29,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:29,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:30,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:32:30,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247674315] [2020-12-23 09:32:30,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:30,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:30,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372452412] [2020-12-23 09:32:30,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:30,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:30,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:30,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:30,036 INFO L87 Difference]: Start difference. First operand 1460 states and 2129 transitions. Second operand 4 states. [2020-12-23 09:32:30,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:30,326 INFO L93 Difference]: Finished difference Result 3481 states and 5074 transitions. [2020-12-23 09:32:30,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:30,327 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-23 09:32:30,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:30,337 INFO L225 Difference]: With dead ends: 3481 [2020-12-23 09:32:30,337 INFO L226 Difference]: Without dead ends: 2045 [2020-12-23 09:32:30,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:32:30,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2020-12-23 09:32:30,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 1460. [2020-12-23 09:32:30,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1460 states. [2020-12-23 09:32:30,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 2126 transitions. [2020-12-23 09:32:30,457 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 2126 transitions. Word has length 105 [2020-12-23 09:32:30,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:30,457 INFO L481 AbstractCegarLoop]: Abstraction has 1460 states and 2126 transitions. [2020-12-23 09:32:30,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:30,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 2126 transitions. [2020-12-23 09:32:30,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 09:32:30,458 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:30,459 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] [2020-12-23 09:32:30,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 09:32:30,459 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:30,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:30,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1595878147, now seen corresponding path program 1 times [2020-12-23 09:32:30,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:30,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203497691] [2020-12-23 09:32:30,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:30,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:32:30,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203497691] [2020-12-23 09:32:30,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:30,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:30,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024223882] [2020-12-23 09:32:30,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:30,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:30,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:30,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:30,509 INFO L87 Difference]: Start difference. First operand 1460 states and 2126 transitions. Second operand 4 states. [2020-12-23 09:32:30,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:30,776 INFO L93 Difference]: Finished difference Result 3479 states and 5064 transitions. [2020-12-23 09:32:30,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:30,777 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-23 09:32:30,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:30,789 INFO L225 Difference]: With dead ends: 3479 [2020-12-23 09:32:30,789 INFO L226 Difference]: Without dead ends: 2044 [2020-12-23 09:32:30,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:32:30,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2020-12-23 09:32:30,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 1460. [2020-12-23 09:32:30,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1460 states. [2020-12-23 09:32:30,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 2123 transitions. [2020-12-23 09:32:30,920 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 2123 transitions. Word has length 105 [2020-12-23 09:32:30,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:30,921 INFO L481 AbstractCegarLoop]: Abstraction has 1460 states and 2123 transitions. [2020-12-23 09:32:30,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:30,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 2123 transitions. [2020-12-23 09:32:30,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 09:32:30,922 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:30,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:30,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 09:32:30,923 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:30,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:30,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1641251071, now seen corresponding path program 1 times [2020-12-23 09:32:30,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:30,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044609291] [2020-12-23 09:32:30,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:30,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:30,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:32:30,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044609291] [2020-12-23 09:32:30,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:30,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:30,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591359239] [2020-12-23 09:32:30,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:30,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:30,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:30,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:30,985 INFO L87 Difference]: Start difference. First operand 1460 states and 2123 transitions. Second operand 4 states. [2020-12-23 09:32:31,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:31,257 INFO L93 Difference]: Finished difference Result 3477 states and 5054 transitions. [2020-12-23 09:32:31,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:31,257 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-23 09:32:31,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:31,285 INFO L225 Difference]: With dead ends: 3477 [2020-12-23 09:32:31,285 INFO L226 Difference]: Without dead ends: 2043 [2020-12-23 09:32:31,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:32:31,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2020-12-23 09:32:31,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 1460. [2020-12-23 09:32:31,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1460 states. [2020-12-23 09:32:31,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 2120 transitions. [2020-12-23 09:32:31,434 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 2120 transitions. Word has length 105 [2020-12-23 09:32:31,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:31,435 INFO L481 AbstractCegarLoop]: Abstraction has 1460 states and 2120 transitions. [2020-12-23 09:32:31,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:31,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 2120 transitions. [2020-12-23 09:32:31,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 09:32:31,437 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:31,437 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] [2020-12-23 09:32:31,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 09:32:31,437 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:31,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:31,438 INFO L82 PathProgramCache]: Analyzing trace with hash 498748605, now seen corresponding path program 1 times [2020-12-23 09:32:31,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:31,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110800549] [2020-12-23 09:32:31,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:31,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:31,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:32:31,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110800549] [2020-12-23 09:32:31,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:31,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:31,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779076195] [2020-12-23 09:32:31,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:31,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:31,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:31,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:31,494 INFO L87 Difference]: Start difference. First operand 1460 states and 2120 transitions. Second operand 4 states. [2020-12-23 09:32:31,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:31,779 INFO L93 Difference]: Finished difference Result 3475 states and 5044 transitions. [2020-12-23 09:32:31,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:31,780 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-23 09:32:31,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:31,785 INFO L225 Difference]: With dead ends: 3475 [2020-12-23 09:32:31,785 INFO L226 Difference]: Without dead ends: 2042 [2020-12-23 09:32:31,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:32:31,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2020-12-23 09:32:31,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 1460. [2020-12-23 09:32:31,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1460 states. [2020-12-23 09:32:31,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 2117 transitions. [2020-12-23 09:32:31,907 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 2117 transitions. Word has length 105 [2020-12-23 09:32:31,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:31,907 INFO L481 AbstractCegarLoop]: Abstraction has 1460 states and 2117 transitions. [2020-12-23 09:32:31,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:31,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 2117 transitions. [2020-12-23 09:32:31,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 09:32:31,908 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:31,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:31,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 09:32:31,909 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:31,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:31,910 INFO L82 PathProgramCache]: Analyzing trace with hash 738988351, now seen corresponding path program 1 times [2020-12-23 09:32:31,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:31,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573352410] [2020-12-23 09:32:31,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:31,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:32:31,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573352410] [2020-12-23 09:32:31,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:31,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:32:31,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838595976] [2020-12-23 09:32:31,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:32:31,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:31,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:32:31,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:32:31,980 INFO L87 Difference]: Start difference. First operand 1460 states and 2117 transitions. Second operand 5 states. [2020-12-23 09:32:32,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:32,526 INFO L93 Difference]: Finished difference Result 5570 states and 8068 transitions. [2020-12-23 09:32:32,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:32:32,527 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-12-23 09:32:32,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:32,535 INFO L225 Difference]: With dead ends: 5570 [2020-12-23 09:32:32,536 INFO L226 Difference]: Without dead ends: 4144 [2020-12-23 09:32:32,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:32:32,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4144 states. [2020-12-23 09:32:32,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4144 to 1520. [2020-12-23 09:32:32,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1520 states. [2020-12-23 09:32:32,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 2177 transitions. [2020-12-23 09:32:32,718 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 2177 transitions. Word has length 105 [2020-12-23 09:32:32,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:32,719 INFO L481 AbstractCegarLoop]: Abstraction has 1520 states and 2177 transitions. [2020-12-23 09:32:32,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:32:32,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 2177 transitions. [2020-12-23 09:32:32,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 09:32:32,720 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:32,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:32,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 09:32:32,721 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:32,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:32,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1172054207, now seen corresponding path program 1 times [2020-12-23 09:32:32,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:32,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852608437] [2020-12-23 09:32:32,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:32,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:32,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:32:32,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852608437] [2020-12-23 09:32:32,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:32,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:32,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491147572] [2020-12-23 09:32:32,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:32,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:32,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:32,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:32,774 INFO L87 Difference]: Start difference. First operand 1520 states and 2177 transitions. Second operand 4 states. [2020-12-23 09:32:33,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:33,330 INFO L93 Difference]: Finished difference Result 5590 states and 7990 transitions. [2020-12-23 09:32:33,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:33,331 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-23 09:32:33,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:33,339 INFO L225 Difference]: With dead ends: 5590 [2020-12-23 09:32:33,340 INFO L226 Difference]: Without dead ends: 4099 [2020-12-23 09:32:33,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:32:33,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4099 states. [2020-12-23 09:32:33,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4099 to 3885. [2020-12-23 09:32:33,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3885 states. [2020-12-23 09:32:33,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3885 states to 3885 states and 5504 transitions. [2020-12-23 09:32:33,714 INFO L78 Accepts]: Start accepts. Automaton has 3885 states and 5504 transitions. Word has length 105 [2020-12-23 09:32:33,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:33,714 INFO L481 AbstractCegarLoop]: Abstraction has 3885 states and 5504 transitions. [2020-12-23 09:32:33,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:33,715 INFO L276 IsEmpty]: Start isEmpty. Operand 3885 states and 5504 transitions. [2020-12-23 09:32:33,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-12-23 09:32:33,717 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:33,717 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:33,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 09:32:33,718 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:33,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:33,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1427849594, now seen corresponding path program 1 times [2020-12-23 09:32:33,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:33,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564215329] [2020-12-23 09:32:33,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:33,777 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:32:33,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564215329] [2020-12-23 09:32:33,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:33,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:32:33,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723285815] [2020-12-23 09:32:33,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:32:33,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:33,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:32:33,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:32:33,779 INFO L87 Difference]: Start difference. First operand 3885 states and 5504 transitions. Second operand 5 states. [2020-12-23 09:32:34,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:34,516 INFO L93 Difference]: Finished difference Result 10206 states and 14508 transitions. [2020-12-23 09:32:34,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:32:34,517 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-12-23 09:32:34,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:34,532 INFO L225 Difference]: With dead ends: 10206 [2020-12-23 09:32:34,532 INFO L226 Difference]: Without dead ends: 6360 [2020-12-23 09:32:34,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:32:34,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6360 states. [2020-12-23 09:32:34,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6360 to 3942. [2020-12-23 09:32:34,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3942 states. [2020-12-23 09:32:34,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 5528 transitions. [2020-12-23 09:32:34,917 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 5528 transitions. Word has length 123 [2020-12-23 09:32:34,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:34,917 INFO L481 AbstractCegarLoop]: Abstraction has 3942 states and 5528 transitions. [2020-12-23 09:32:34,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:32:34,917 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 5528 transitions. [2020-12-23 09:32:34,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-12-23 09:32:34,919 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:34,920 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:34,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-23 09:32:34,920 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:34,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:34,921 INFO L82 PathProgramCache]: Analyzing trace with hash -990634884, now seen corresponding path program 1 times [2020-12-23 09:32:34,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:34,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231555093] [2020-12-23 09:32:34,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:34,982 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:32:34,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231555093] [2020-12-23 09:32:34,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:34,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:32:34,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541015719] [2020-12-23 09:32:34,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:32:34,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:34,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:32:34,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:32:34,985 INFO L87 Difference]: Start difference. First operand 3942 states and 5528 transitions. Second operand 5 states. [2020-12-23 09:32:35,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:35,630 INFO L93 Difference]: Finished difference Result 8784 states and 12291 transitions. [2020-12-23 09:32:35,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:32:35,631 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-12-23 09:32:35,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:35,641 INFO L225 Difference]: With dead ends: 8784 [2020-12-23 09:32:35,642 INFO L226 Difference]: Without dead ends: 4888 [2020-12-23 09:32:35,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:32:35,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4888 states. [2020-12-23 09:32:35,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4888 to 3948. [2020-12-23 09:32:35,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3948 states. [2020-12-23 09:32:35,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3948 states to 3948 states and 5484 transitions. [2020-12-23 09:32:35,990 INFO L78 Accepts]: Start accepts. Automaton has 3948 states and 5484 transitions. Word has length 123 [2020-12-23 09:32:35,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:35,990 INFO L481 AbstractCegarLoop]: Abstraction has 3948 states and 5484 transitions. [2020-12-23 09:32:35,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:32:35,991 INFO L276 IsEmpty]: Start isEmpty. Operand 3948 states and 5484 transitions. [2020-12-23 09:32:35,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-12-23 09:32:35,993 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:35,993 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:35,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-23 09:32:35,993 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:35,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:35,994 INFO L82 PathProgramCache]: Analyzing trace with hash -750395138, now seen corresponding path program 1 times [2020-12-23 09:32:35,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:35,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250128495] [2020-12-23 09:32:35,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:36,042 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:32:36,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250128495] [2020-12-23 09:32:36,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:36,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:36,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939797401] [2020-12-23 09:32:36,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:36,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:36,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:36,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:36,044 INFO L87 Difference]: Start difference. First operand 3948 states and 5484 transitions. Second operand 4 states. [2020-12-23 09:32:37,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:37,102 INFO L93 Difference]: Finished difference Result 14815 states and 20566 transitions. [2020-12-23 09:32:37,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:37,102 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-12-23 09:32:37,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:37,127 INFO L225 Difference]: With dead ends: 14815 [2020-12-23 09:32:37,127 INFO L226 Difference]: Without dead ends: 10915 [2020-12-23 09:32:37,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:32:37,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10915 states. [2020-12-23 09:32:37,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10915 to 10443. [2020-12-23 09:32:37,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10443 states. [2020-12-23 09:32:37,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10443 states to 10443 states and 14381 transitions. [2020-12-23 09:32:37,997 INFO L78 Accepts]: Start accepts. Automaton has 10443 states and 14381 transitions. Word has length 123 [2020-12-23 09:32:37,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:37,998 INFO L481 AbstractCegarLoop]: Abstraction has 10443 states and 14381 transitions. [2020-12-23 09:32:37,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:37,998 INFO L276 IsEmpty]: Start isEmpty. Operand 10443 states and 14381 transitions. [2020-12-23 09:32:38,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-23 09:32:38,001 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:38,001 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:38,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-23 09:32:38,002 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:38,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:38,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1357225913, now seen corresponding path program 1 times [2020-12-23 09:32:38,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:38,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060233509] [2020-12-23 09:32:38,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:38,049 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:32:38,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060233509] [2020-12-23 09:32:38,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:38,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:32:38,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518389742] [2020-12-23 09:32:38,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:32:38,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:38,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:32:38,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:32:38,051 INFO L87 Difference]: Start difference. First operand 10443 states and 14381 transitions. Second operand 5 states. [2020-12-23 09:32:39,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:39,458 INFO L93 Difference]: Finished difference Result 26880 states and 37268 transitions. [2020-12-23 09:32:39,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:32:39,459 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-12-23 09:32:39,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:39,489 INFO L225 Difference]: With dead ends: 26880 [2020-12-23 09:32:39,489 INFO L226 Difference]: Without dead ends: 16489 [2020-12-23 09:32:39,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:32:39,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16489 states. [2020-12-23 09:32:40,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16489 to 10596. [2020-12-23 09:32:40,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10596 states. [2020-12-23 09:32:40,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10596 states to 10596 states and 14447 transitions. [2020-12-23 09:32:40,488 INFO L78 Accepts]: Start accepts. Automaton has 10596 states and 14447 transitions. Word has length 127 [2020-12-23 09:32:40,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:40,488 INFO L481 AbstractCegarLoop]: Abstraction has 10596 states and 14447 transitions. [2020-12-23 09:32:40,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:32:40,488 INFO L276 IsEmpty]: Start isEmpty. Operand 10596 states and 14447 transitions. [2020-12-23 09:32:40,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-23 09:32:40,490 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:40,491 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:40,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-23 09:32:40,491 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:40,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:40,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1330160311, now seen corresponding path program 1 times [2020-12-23 09:32:40,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:40,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583553141] [2020-12-23 09:32:40,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:40,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:40,573 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:32:40,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583553141] [2020-12-23 09:32:40,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:40,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:40,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808011966] [2020-12-23 09:32:40,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:40,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:40,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:40,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:40,580 INFO L87 Difference]: Start difference. First operand 10596 states and 14447 transitions. Second operand 4 states. [2020-12-23 09:32:43,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:43,095 INFO L93 Difference]: Finished difference Result 40013 states and 54564 transitions. [2020-12-23 09:32:43,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:43,098 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-12-23 09:32:43,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:43,136 INFO L225 Difference]: With dead ends: 40013 [2020-12-23 09:32:43,137 INFO L226 Difference]: Without dead ends: 29471 [2020-12-23 09:32:43,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:32:43,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29471 states. [2020-12-23 09:32:45,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29471 to 28393. [2020-12-23 09:32:45,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28393 states. [2020-12-23 09:32:45,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28393 states to 28393 states and 38440 transitions. [2020-12-23 09:32:45,767 INFO L78 Accepts]: Start accepts. Automaton has 28393 states and 38440 transitions. Word has length 127 [2020-12-23 09:32:45,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:45,768 INFO L481 AbstractCegarLoop]: Abstraction has 28393 states and 38440 transitions. [2020-12-23 09:32:45,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:45,768 INFO L276 IsEmpty]: Start isEmpty. Operand 28393 states and 38440 transitions. [2020-12-23 09:32:45,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-23 09:32:45,772 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:45,772 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:45,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-23 09:32:45,773 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:45,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:45,773 INFO L82 PathProgramCache]: Analyzing trace with hash -156894974, now seen corresponding path program 1 times [2020-12-23 09:32:45,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:45,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227837202] [2020-12-23 09:32:45,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:45,842 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:32:45,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227837202] [2020-12-23 09:32:45,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:45,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:32:45,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210066429] [2020-12-23 09:32:45,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:32:45,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:45,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:32:45,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:32:45,847 INFO L87 Difference]: Start difference. First operand 28393 states and 38440 transitions. Second operand 5 states. [2020-12-23 09:32:49,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:49,244 INFO L93 Difference]: Finished difference Result 72366 states and 98739 transitions. [2020-12-23 09:32:49,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:32:49,244 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-12-23 09:32:49,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:49,292 INFO L225 Difference]: With dead ends: 72366 [2020-12-23 09:32:49,292 INFO L226 Difference]: Without dead ends: 44031 [2020-12-23 09:32:49,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:32:49,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44031 states. [2020-12-23 09:32:52,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44031 to 28804. [2020-12-23 09:32:52,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28804 states. [2020-12-23 09:32:52,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28804 states to 28804 states and 38620 transitions. [2020-12-23 09:32:52,108 INFO L78 Accepts]: Start accepts. Automaton has 28804 states and 38620 transitions. Word has length 131 [2020-12-23 09:32:52,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:52,108 INFO L481 AbstractCegarLoop]: Abstraction has 28804 states and 38620 transitions. [2020-12-23 09:32:52,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:32:52,108 INFO L276 IsEmpty]: Start isEmpty. Operand 28804 states and 38620 transitions. [2020-12-23 09:32:52,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-23 09:32:52,112 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:52,112 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:52,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-23 09:32:52,112 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:52,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:52,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1577209476, now seen corresponding path program 1 times [2020-12-23 09:32:52,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:52,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721790797] [2020-12-23 09:32:52,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:52,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:52,191 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:32:52,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721790797] [2020-12-23 09:32:52,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:52,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:32:52,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29144603] [2020-12-23 09:32:52,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:32:52,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:52,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:32:52,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:32:52,193 INFO L87 Difference]: Start difference. First operand 28804 states and 38620 transitions. Second operand 3 states. [2020-12-23 09:32:56,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:56,463 INFO L93 Difference]: Finished difference Result 82794 states and 111133 transitions. [2020-12-23 09:32:56,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:32:56,464 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 131 [2020-12-23 09:32:56,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:56,521 INFO L225 Difference]: With dead ends: 82794 [2020-12-23 09:32:56,521 INFO L226 Difference]: Without dead ends: 54057 [2020-12-23 09:32:56,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:32:56,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54057 states. [2020-12-23 09:33:00,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54057 to 53947. [2020-12-23 09:33:00,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53947 states. [2020-12-23 09:33:01,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53947 states to 53947 states and 72117 transitions. [2020-12-23 09:33:01,044 INFO L78 Accepts]: Start accepts. Automaton has 53947 states and 72117 transitions. Word has length 131 [2020-12-23 09:33:01,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:01,044 INFO L481 AbstractCegarLoop]: Abstraction has 53947 states and 72117 transitions. [2020-12-23 09:33:01,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:33:01,044 INFO L276 IsEmpty]: Start isEmpty. Operand 53947 states and 72117 transitions. [2020-12-23 09:33:01,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-23 09:33:01,054 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:01,054 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:33:01,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-23 09:33:01,055 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:01,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:01,055 INFO L82 PathProgramCache]: Analyzing trace with hash -580263547, now seen corresponding path program 1 times [2020-12-23 09:33:01,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:01,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538887851] [2020-12-23 09:33:01,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:01,124 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 09:33:01,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538887851] [2020-12-23 09:33:01,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:01,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:33:01,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969925004] [2020-12-23 09:33:01,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:33:01,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:01,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:33:01,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:33:01,127 INFO L87 Difference]: Start difference. First operand 53947 states and 72117 transitions. Second operand 5 states. [2020-12-23 09:33:08,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:08,174 INFO L93 Difference]: Finished difference Result 145768 states and 196708 transitions. [2020-12-23 09:33:08,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:33:08,174 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-12-23 09:33:08,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:08,294 INFO L225 Difference]: With dead ends: 145768 [2020-12-23 09:33:08,294 INFO L226 Difference]: Without dead ends: 91892 [2020-12-23 09:33:08,339 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 09:33:08,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91892 states. [2020-12-23 09:33:13,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91892 to 55048. [2020-12-23 09:33:13,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55048 states. [2020-12-23 09:33:13,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55048 states to 55048 states and 72904 transitions. [2020-12-23 09:33:13,415 INFO L78 Accepts]: Start accepts. Automaton has 55048 states and 72904 transitions. Word has length 131 [2020-12-23 09:33:13,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:13,415 INFO L481 AbstractCegarLoop]: Abstraction has 55048 states and 72904 transitions. [2020-12-23 09:33:13,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:33:13,415 INFO L276 IsEmpty]: Start isEmpty. Operand 55048 states and 72904 transitions. [2020-12-23 09:33:13,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-23 09:33:13,420 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:13,420 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:33:13,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-23 09:33:13,420 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:13,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:13,421 INFO L82 PathProgramCache]: Analyzing trace with hash -997660153, now seen corresponding path program 1 times [2020-12-23 09:33:13,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:13,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756398896] [2020-12-23 09:33:13,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:13,614 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2020-12-23 09:33:13,639 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 09:33:13,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756398896] [2020-12-23 09:33:13,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:13,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:33:13,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727807957] [2020-12-23 09:33:13,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:33:13,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:13,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:33:13,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:33:13,642 INFO L87 Difference]: Start difference. First operand 55048 states and 72904 transitions. Second operand 5 states. [2020-12-23 09:33:23,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:23,734 INFO L93 Difference]: Finished difference Result 178285 states and 239345 transitions. [2020-12-23 09:33:23,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:33:23,734 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-12-23 09:33:23,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:23,903 INFO L225 Difference]: With dead ends: 178285 [2020-12-23 09:33:23,903 INFO L226 Difference]: Without dead ends: 123315 [2020-12-23 09:33:23,946 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 09:33:24,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123315 states. [2020-12-23 09:33:29,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123315 to 57091. [2020-12-23 09:33:29,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57091 states. [2020-12-23 09:33:29,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57091 states to 57091 states and 74947 transitions. [2020-12-23 09:33:29,997 INFO L78 Accepts]: Start accepts. Automaton has 57091 states and 74947 transitions. Word has length 131 [2020-12-23 09:33:29,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:29,998 INFO L481 AbstractCegarLoop]: Abstraction has 57091 states and 74947 transitions. [2020-12-23 09:33:29,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:33:29,998 INFO L276 IsEmpty]: Start isEmpty. Operand 57091 states and 74947 transitions. [2020-12-23 09:33:30,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-23 09:33:30,002 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:30,002 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:33:30,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-23 09:33:30,003 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:30,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:30,003 INFO L82 PathProgramCache]: Analyzing trace with hash 263257097, now seen corresponding path program 1 times [2020-12-23 09:33:30,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:30,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361099271] [2020-12-23 09:33:30,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:30,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:30,230 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 09:33:30,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361099271] [2020-12-23 09:33:30,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:30,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:30,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244017333] [2020-12-23 09:33:30,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:30,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:30,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:30,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:30,233 INFO L87 Difference]: Start difference. First operand 57091 states and 74947 transitions. Second operand 4 states. [2020-12-23 09:33:38,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:38,828 INFO L93 Difference]: Finished difference Result 148528 states and 193701 transitions. [2020-12-23 09:33:38,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:38,829 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-12-23 09:33:38,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:38,994 INFO L225 Difference]: With dead ends: 148528 [2020-12-23 09:33:38,994 INFO L226 Difference]: Without dead ends: 91520 [2020-12-23 09:33:39,040 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 09:33:39,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91520 states. [2020-12-23 09:33:45,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91520 to 65497. [2020-12-23 09:33:45,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65497 states. [2020-12-23 09:33:45,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65497 states to 65497 states and 84753 transitions. [2020-12-23 09:33:45,677 INFO L78 Accepts]: Start accepts. Automaton has 65497 states and 84753 transitions. Word has length 131 [2020-12-23 09:33:45,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:45,677 INFO L481 AbstractCegarLoop]: Abstraction has 65497 states and 84753 transitions. [2020-12-23 09:33:45,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:33:45,678 INFO L276 IsEmpty]: Start isEmpty. Operand 65497 states and 84753 transitions. [2020-12-23 09:33:45,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-23 09:33:45,682 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:45,682 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:33:45,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-23 09:33:45,683 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:45,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:45,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1650042507, now seen corresponding path program 1 times [2020-12-23 09:33:45,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:45,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19858541] [2020-12-23 09:33:45,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:45,754 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 09:33:45,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19858541] [2020-12-23 09:33:45,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:45,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:45,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183950997] [2020-12-23 09:33:45,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:45,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:45,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:45,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:45,756 INFO L87 Difference]: Start difference. First operand 65497 states and 84753 transitions. Second operand 4 states. [2020-12-23 09:33:55,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:55,404 INFO L93 Difference]: Finished difference Result 161016 states and 208074 transitions. [2020-12-23 09:33:55,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:33:55,405 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-12-23 09:33:55,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:55,528 INFO L225 Difference]: With dead ends: 161016 [2020-12-23 09:33:55,529 INFO L226 Difference]: Without dead ends: 95674 [2020-12-23 09:33:55,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:33:55,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95674 states. [2020-12-23 09:34:02,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95674 to 65497. [2020-12-23 09:34:02,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65497 states. [2020-12-23 09:34:02,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65497 states to 65497 states and 84536 transitions. [2020-12-23 09:34:02,131 INFO L78 Accepts]: Start accepts. Automaton has 65497 states and 84536 transitions. Word has length 131 [2020-12-23 09:34:02,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:34:02,132 INFO L481 AbstractCegarLoop]: Abstraction has 65497 states and 84536 transitions. [2020-12-23 09:34:02,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:34:02,132 INFO L276 IsEmpty]: Start isEmpty. Operand 65497 states and 84536 transitions. [2020-12-23 09:34:02,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-23 09:34:02,136 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:34:02,136 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:34:02,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-23 09:34:02,136 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:34:02,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:34:02,136 INFO L82 PathProgramCache]: Analyzing trace with hash 2093943181, now seen corresponding path program 1 times [2020-12-23 09:34:02,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:34:02,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611675870] [2020-12-23 09:34:02,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:34:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:34:02,221 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 09:34:02,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611675870] [2020-12-23 09:34:02,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:34:02,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:34:02,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883717070] [2020-12-23 09:34:02,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:34:02,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:34:02,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:34:02,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:34:02,223 INFO L87 Difference]: Start difference. First operand 65497 states and 84536 transitions. Second operand 4 states. [2020-12-23 09:34:12,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:34:12,136 INFO L93 Difference]: Finished difference Result 161013 states and 207583 transitions. [2020-12-23 09:34:12,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:34:12,136 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-12-23 09:34:12,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:34:12,253 INFO L225 Difference]: With dead ends: 161013 [2020-12-23 09:34:12,253 INFO L226 Difference]: Without dead ends: 95674 [2020-12-23 09:34:12,304 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 09:34:12,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95674 states. [2020-12-23 09:34:19,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95674 to 65497. [2020-12-23 09:34:19,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65497 states. [2020-12-23 09:34:19,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65497 states to 65497 states and 84319 transitions. [2020-12-23 09:34:19,295 INFO L78 Accepts]: Start accepts. Automaton has 65497 states and 84319 transitions. Word has length 131 [2020-12-23 09:34:19,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:34:19,295 INFO L481 AbstractCegarLoop]: Abstraction has 65497 states and 84319 transitions. [2020-12-23 09:34:19,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:34:19,295 INFO L276 IsEmpty]: Start isEmpty. Operand 65497 states and 84319 transitions. [2020-12-23 09:34:19,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-23 09:34:19,299 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:34:19,299 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:34:19,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-23 09:34:19,299 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:34:19,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:34:19,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1612862923, now seen corresponding path program 1 times [2020-12-23 09:34:19,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:34:19,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329222780] [2020-12-23 09:34:19,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:34:19,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:34:19,355 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 09:34:19,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329222780] [2020-12-23 09:34:19,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:34:19,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:34:19,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758385722] [2020-12-23 09:34:19,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:34:19,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:34:19,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:34:19,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:34:19,357 INFO L87 Difference]: Start difference. First operand 65497 states and 84319 transitions. Second operand 4 states.