/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.05.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 09:31:48,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 09:31:48,186 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 09:31:48,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 09:31:48,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 09:31:48,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 09:31:48,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 09:31:48,263 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 09:31:48,268 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 09:31:48,275 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 09:31:48,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 09:31:48,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 09:31:48,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 09:31:48,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 09:31:48,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 09:31:48,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 09:31:48,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 09:31:48,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 09:31:48,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 09:31:48,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 09:31:48,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 09:31:48,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 09:31:48,314 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 09:31:48,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 09:31:48,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 09:31:48,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 09:31:48,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 09:31:48,320 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 09:31:48,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 09:31:48,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 09:31:48,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 09:31:48,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 09:31:48,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 09:31:48,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 09:31:48,327 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 09:31:48,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 09:31:48,329 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 09:31:48,329 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 09:31:48,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 09:31:48,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 09:31:48,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 09:31:48,333 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 09:31:48,362 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 09:31:48,362 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 09:31:48,364 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 09:31:48,364 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 09:31:48,365 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 09:31:48,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 09:31:48,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 09:31:48,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 09:31:48,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 09:31:48,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 09:31:48,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 09:31:48,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 09:31:48,367 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 09:31:48,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 09:31:48,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 09:31:48,368 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 09:31:48,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 09:31:48,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 09:31:48,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 09:31:48,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 09:31:48,370 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 09:31:48,370 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 09:31:48,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 09:31:48,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 09:31:48,371 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 09:31:48,371 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 09:31:48,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 09:31:48,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 09:31:48,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 09:31:48,821 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 09:31:48,822 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 09:31:48,823 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.05.cil-2.c [2020-12-23 09:31:48,905 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5a905fae1/81b6b6f4ccfa4bcf8199d9637692e2cc/FLAG1aab9dfbb [2020-12-23 09:31:49,695 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 09:31:49,696 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.05.cil-2.c [2020-12-23 09:31:49,716 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5a905fae1/81b6b6f4ccfa4bcf8199d9637692e2cc/FLAG1aab9dfbb [2020-12-23 09:31:50,021 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5a905fae1/81b6b6f4ccfa4bcf8199d9637692e2cc [2020-12-23 09:31:50,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 09:31:50,027 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 09:31:50,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 09:31:50,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 09:31:50,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 09:31:50,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:31:50" (1/1) ... [2020-12-23 09:31:50,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b4d29db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:31:50, skipping insertion in model container [2020-12-23 09:31:50,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:31:50" (1/1) ... [2020-12-23 09:31:50,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 09:31:50,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 09:31:50,271 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.05.cil-2.c[366,379] left hand side expression in assignment: lhs: VariableLHS[~token~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~local~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t1_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t2_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t3_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t3_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t4_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t4_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t5_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t5_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_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[~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[~__retres1~6,] 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[~__retres1~6,] 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[~__retres1~6,] 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[~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[~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[~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[~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[~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[~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[~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[~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[~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[~__retres1~7,] [2020-12-23 09:31:50,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:31:50,406 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 09:31:50,426 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.05.cil-2.c[366,379] left hand side expression in assignment: lhs: VariableLHS[~token~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~local~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t1_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t2_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t3_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t3_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t4_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t4_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t5_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t5_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~E_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[~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[~__retres1~6,] 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[~__retres1~6,] 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[~__retres1~6,] 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[~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[~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[~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[~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[~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[~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[~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[~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[~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[~__retres1~7,] [2020-12-23 09:31:50,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:31:50,526 INFO L208 MainTranslator]: Completed translation [2020-12-23 09:31:50,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:31:50 WrapperNode [2020-12-23 09:31:50,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 09:31:50,530 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 09:31:50,530 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 09:31:50,530 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 09:31:50,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:31:50" (1/1) ... [2020-12-23 09:31:50,554 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:31:50" (1/1) ... [2020-12-23 09:31:50,685 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 09:31:50,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 09:31:50,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 09:31:50,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 09:31:50,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:31:50" (1/1) ... [2020-12-23 09:31:50,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:31:50" (1/1) ... [2020-12-23 09:31:50,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:31:50" (1/1) ... [2020-12-23 09:31:50,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:31:50" (1/1) ... [2020-12-23 09:31:50,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:31:50" (1/1) ... [2020-12-23 09:31:50,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:31:50" (1/1) ... [2020-12-23 09:31:50,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:31:50" (1/1) ... [2020-12-23 09:31:50,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 09:31:50,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 09:31:50,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 09:31:50,797 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 09:31:50,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:31:50" (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 09:31:50,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 09:31:50,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 09:31:50,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 09:31:50,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 09:31:52,658 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 09:31:52,659 INFO L299 CfgBuilder]: Removed 198 assume(true) statements. [2020-12-23 09:31:52,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:31:52 BoogieIcfgContainer [2020-12-23 09:31:52,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 09:31:52,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 09:31:52,665 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 09:31:52,669 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 09:31:52,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 09:31:50" (1/3) ... [2020-12-23 09:31:52,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e877d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:31:52, skipping insertion in model container [2020-12-23 09:31:52,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:31:50" (2/3) ... [2020-12-23 09:31:52,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e877d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:31:52, skipping insertion in model container [2020-12-23 09:31:52,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:31:52" (3/3) ... [2020-12-23 09:31:52,677 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.05.cil-2.c [2020-12-23 09:31:52,685 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 09:31:52,692 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-23 09:31:52,714 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-23 09:31:52,751 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 09:31:52,752 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 09:31:52,752 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 09:31:52,752 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 09:31:52,752 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 09:31:52,752 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 09:31:52,753 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 09:31:52,753 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 09:31:52,784 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states. [2020-12-23 09:31:52,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-23 09:31:52,796 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:31:52,797 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] [2020-12-23 09:31:52,797 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:31:52,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:31:52,805 INFO L82 PathProgramCache]: Analyzing trace with hash -967631064, now seen corresponding path program 1 times [2020-12-23 09:31:52,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:31:52,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633104791] [2020-12-23 09:31:52,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:31:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:31:53,155 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 09:31:53,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633104791] [2020-12-23 09:31:53,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:31:53,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:31:53,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95638612] [2020-12-23 09:31:53,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:31:53,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:31:53,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:31:53,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:31:53,190 INFO L87 Difference]: Start difference. First operand 540 states. Second operand 3 states. [2020-12-23 09:31:53,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:31:53,341 INFO L93 Difference]: Finished difference Result 1075 states and 1663 transitions. [2020-12-23 09:31:53,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:31:53,344 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-12-23 09:31:53,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:31:53,365 INFO L225 Difference]: With dead ends: 1075 [2020-12-23 09:31:53,366 INFO L226 Difference]: Without dead ends: 536 [2020-12-23 09:31:53,374 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 09:31:53,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2020-12-23 09:31:53,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 536. [2020-12-23 09:31:53,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-12-23 09:31:53,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 812 transitions. [2020-12-23 09:31:53,477 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 812 transitions. Word has length 83 [2020-12-23 09:31:53,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:31:53,478 INFO L481 AbstractCegarLoop]: Abstraction has 536 states and 812 transitions. [2020-12-23 09:31:53,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:31:53,478 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 812 transitions. [2020-12-23 09:31:53,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-23 09:31:53,482 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:31:53,482 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] [2020-12-23 09:31:53,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 09:31:53,483 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:31:53,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:31:53,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1207870810, now seen corresponding path program 1 times [2020-12-23 09:31:53,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:31:53,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697803867] [2020-12-23 09:31:53,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:31:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:31:53,586 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 09:31:53,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697803867] [2020-12-23 09:31:53,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:31:53,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:31:53,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941866288] [2020-12-23 09:31:53,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:31:53,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:31:53,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:31:53,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:31:53,590 INFO L87 Difference]: Start difference. First operand 536 states and 812 transitions. Second operand 3 states. [2020-12-23 09:31:53,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:31:53,667 INFO L93 Difference]: Finished difference Result 1480 states and 2236 transitions. [2020-12-23 09:31:53,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:31:53,668 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-12-23 09:31:53,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:31:53,675 INFO L225 Difference]: With dead ends: 1480 [2020-12-23 09:31:53,675 INFO L226 Difference]: Without dead ends: 954 [2020-12-23 09:31:53,678 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 09:31:53,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2020-12-23 09:31:53,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 950. [2020-12-23 09:31:53,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-12-23 09:31:53,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1434 transitions. [2020-12-23 09:31:53,762 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1434 transitions. Word has length 83 [2020-12-23 09:31:53,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:31:53,762 INFO L481 AbstractCegarLoop]: Abstraction has 950 states and 1434 transitions. [2020-12-23 09:31:53,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:31:53,763 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1434 transitions. [2020-12-23 09:31:53,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-23 09:31:53,771 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:31:53,771 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] [2020-12-23 09:31:53,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 09:31:53,772 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:31:53,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:31:53,776 INFO L82 PathProgramCache]: Analyzing trace with hash -258608350, now seen corresponding path program 1 times [2020-12-23 09:31:53,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:31:53,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646227989] [2020-12-23 09:31:53,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:31:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:31:53,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:31:53,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646227989] [2020-12-23 09:31:53,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:31:53,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:31:53,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079994031] [2020-12-23 09:31:53,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:31:53,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:31:53,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:31:53,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:31:53,894 INFO L87 Difference]: Start difference. First operand 950 states and 1434 transitions. Second operand 4 states. [2020-12-23 09:31:54,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:31:54,026 INFO L93 Difference]: Finished difference Result 2306 states and 3475 transitions. [2020-12-23 09:31:54,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:31:54,027 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-12-23 09:31:54,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:31:54,035 INFO L225 Difference]: With dead ends: 2306 [2020-12-23 09:31:54,035 INFO L226 Difference]: Without dead ends: 1367 [2020-12-23 09:31:54,038 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 09:31:54,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2020-12-23 09:31:54,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 950. [2020-12-23 09:31:54,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-12-23 09:31:54,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1431 transitions. [2020-12-23 09:31:54,088 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1431 transitions. Word has length 83 [2020-12-23 09:31:54,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:31:54,088 INFO L481 AbstractCegarLoop]: Abstraction has 950 states and 1431 transitions. [2020-12-23 09:31:54,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:31:54,088 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1431 transitions. [2020-12-23 09:31:54,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-23 09:31:54,090 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:31:54,090 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] [2020-12-23 09:31:54,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 09:31:54,090 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:31:54,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:31:54,091 INFO L82 PathProgramCache]: Analyzing trace with hash 2125316388, now seen corresponding path program 1 times [2020-12-23 09:31:54,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:31:54,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369905298] [2020-12-23 09:31:54,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:31:54,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:31:54,148 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 09:31:54,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369905298] [2020-12-23 09:31:54,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:31:54,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:31:54,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502017351] [2020-12-23 09:31:54,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:31:54,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:31:54,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:31:54,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:31:54,152 INFO L87 Difference]: Start difference. First operand 950 states and 1431 transitions. Second operand 4 states. [2020-12-23 09:31:54,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:31:54,300 INFO L93 Difference]: Finished difference Result 2304 states and 3465 transitions. [2020-12-23 09:31:54,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:31:54,300 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-12-23 09:31:54,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:31:54,309 INFO L225 Difference]: With dead ends: 2304 [2020-12-23 09:31:54,310 INFO L226 Difference]: Without dead ends: 1366 [2020-12-23 09:31:54,312 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 09:31:54,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2020-12-23 09:31:54,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 950. [2020-12-23 09:31:54,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-12-23 09:31:54,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1428 transitions. [2020-12-23 09:31:54,373 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1428 transitions. Word has length 83 [2020-12-23 09:31:54,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:31:54,373 INFO L481 AbstractCegarLoop]: Abstraction has 950 states and 1428 transitions. [2020-12-23 09:31:54,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:31:54,374 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1428 transitions. [2020-12-23 09:31:54,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-23 09:31:54,382 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:31:54,383 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] [2020-12-23 09:31:54,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 09:31:54,383 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:31:54,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:31:54,384 INFO L82 PathProgramCache]: Analyzing trace with hash -2092750110, now seen corresponding path program 1 times [2020-12-23 09:31:54,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:31:54,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120731003] [2020-12-23 09:31:54,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:31:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:31:54,501 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 09:31:54,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120731003] [2020-12-23 09:31:54,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:31:54,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:31:54,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302277710] [2020-12-23 09:31:54,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:31:54,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:31:54,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:31:54,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:31:54,504 INFO L87 Difference]: Start difference. First operand 950 states and 1428 transitions. Second operand 3 states. [2020-12-23 09:31:54,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:31:54,585 INFO L93 Difference]: Finished difference Result 1886 states and 2835 transitions. [2020-12-23 09:31:54,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:31:54,586 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-12-23 09:31:54,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:31:54,592 INFO L225 Difference]: With dead ends: 1886 [2020-12-23 09:31:54,593 INFO L226 Difference]: Without dead ends: 950 [2020-12-23 09:31:54,596 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 09:31:54,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2020-12-23 09:31:54,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 950. [2020-12-23 09:31:54,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-12-23 09:31:54,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1420 transitions. [2020-12-23 09:31:54,656 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1420 transitions. Word has length 83 [2020-12-23 09:31:54,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:31:54,657 INFO L481 AbstractCegarLoop]: Abstraction has 950 states and 1420 transitions. [2020-12-23 09:31:54,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:31:54,657 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1420 transitions. [2020-12-23 09:31:54,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-23 09:31:54,658 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:31:54,658 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] [2020-12-23 09:31:54,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 09:31:54,659 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:31:54,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:31:54,660 INFO L82 PathProgramCache]: Analyzing trace with hash 34562398, now seen corresponding path program 1 times [2020-12-23 09:31:54,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:31:54,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044109080] [2020-12-23 09:31:54,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:31:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:31:54,724 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 09:31:54,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044109080] [2020-12-23 09:31:54,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:31:54,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:31:54,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938174793] [2020-12-23 09:31:54,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:31:54,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:31:54,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:31:54,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:31:54,729 INFO L87 Difference]: Start difference. First operand 950 states and 1420 transitions. Second operand 3 states. [2020-12-23 09:31:54,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:31:54,812 INFO L93 Difference]: Finished difference Result 1885 states and 2818 transitions. [2020-12-23 09:31:54,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:31:54,813 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-12-23 09:31:54,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:31:54,819 INFO L225 Difference]: With dead ends: 1885 [2020-12-23 09:31:54,819 INFO L226 Difference]: Without dead ends: 950 [2020-12-23 09:31:54,822 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 09:31:54,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2020-12-23 09:31:54,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 950. [2020-12-23 09:31:54,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-12-23 09:31:54,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1412 transitions. [2020-12-23 09:31:54,879 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1412 transitions. Word has length 83 [2020-12-23 09:31:54,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:31:54,879 INFO L481 AbstractCegarLoop]: Abstraction has 950 states and 1412 transitions. [2020-12-23 09:31:54,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:31:54,880 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1412 transitions. [2020-12-23 09:31:54,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-23 09:31:54,881 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:31:54,881 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] [2020-12-23 09:31:54,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 09:31:54,882 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:31:54,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:31:54,882 INFO L82 PathProgramCache]: Analyzing trace with hash -458063776, now seen corresponding path program 1 times [2020-12-23 09:31:54,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:31:54,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108823408] [2020-12-23 09:31:54,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:31:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:31:54,989 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 09:31:54,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108823408] [2020-12-23 09:31:54,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:31:54,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:31:54,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116354349] [2020-12-23 09:31:54,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:31:54,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:31:54,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:31:54,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:31:54,994 INFO L87 Difference]: Start difference. First operand 950 states and 1412 transitions. Second operand 4 states. [2020-12-23 09:31:55,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:31:55,242 INFO L93 Difference]: Finished difference Result 2254 states and 3349 transitions. [2020-12-23 09:31:55,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:31:55,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-12-23 09:31:55,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:31:55,250 INFO L225 Difference]: With dead ends: 2254 [2020-12-23 09:31:55,251 INFO L226 Difference]: Without dead ends: 1320 [2020-12-23 09:31:55,254 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 09:31:55,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2020-12-23 09:31:55,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 950. [2020-12-23 09:31:55,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-12-23 09:31:55,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1409 transitions. [2020-12-23 09:31:55,324 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1409 transitions. Word has length 83 [2020-12-23 09:31:55,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:31:55,325 INFO L481 AbstractCegarLoop]: Abstraction has 950 states and 1409 transitions. [2020-12-23 09:31:55,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:31:55,325 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1409 transitions. [2020-12-23 09:31:55,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-23 09:31:55,326 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:31:55,326 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] [2020-12-23 09:31:55,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 09:31:55,327 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:31:55,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:31:55,327 INFO L82 PathProgramCache]: Analyzing trace with hash 495876382, now seen corresponding path program 1 times [2020-12-23 09:31:55,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:31:55,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219992055] [2020-12-23 09:31:55,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:31:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:31:55,390 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 09:31:55,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219992055] [2020-12-23 09:31:55,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:31:55,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:31:55,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624389884] [2020-12-23 09:31:55,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:31:55,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:31:55,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:31:55,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:31:55,395 INFO L87 Difference]: Start difference. First operand 950 states and 1409 transitions. Second operand 4 states. [2020-12-23 09:31:55,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:31:55,622 INFO L93 Difference]: Finished difference Result 2252 states and 3339 transitions. [2020-12-23 09:31:55,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:31:55,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-12-23 09:31:55,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:31:55,630 INFO L225 Difference]: With dead ends: 2252 [2020-12-23 09:31:55,630 INFO L226 Difference]: Without dead ends: 1319 [2020-12-23 09:31:55,633 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 09:31:55,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2020-12-23 09:31:55,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 950. [2020-12-23 09:31:55,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-12-23 09:31:55,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1406 transitions. [2020-12-23 09:31:55,737 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1406 transitions. Word has length 83 [2020-12-23 09:31:55,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:31:55,738 INFO L481 AbstractCegarLoop]: Abstraction has 950 states and 1406 transitions. [2020-12-23 09:31:55,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:31:55,738 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1406 transitions. [2020-12-23 09:31:55,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-23 09:31:55,739 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:31:55,739 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] [2020-12-23 09:31:55,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 09:31:55,742 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:31:55,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:31:55,743 INFO L82 PathProgramCache]: Analyzing trace with hash -720277344, now seen corresponding path program 1 times [2020-12-23 09:31:55,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:31:55,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145415384] [2020-12-23 09:31:55,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:31:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:31:55,819 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 09:31:55,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145415384] [2020-12-23 09:31:55,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:31:55,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:31:55,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866883516] [2020-12-23 09:31:55,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:31:55,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:31:55,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:31:55,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:31:55,830 INFO L87 Difference]: Start difference. First operand 950 states and 1406 transitions. Second operand 3 states. [2020-12-23 09:31:55,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:31:55,939 INFO L93 Difference]: Finished difference Result 1882 states and 2787 transitions. [2020-12-23 09:31:55,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:31:55,940 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-12-23 09:31:55,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:31:55,945 INFO L225 Difference]: With dead ends: 1882 [2020-12-23 09:31:55,945 INFO L226 Difference]: Without dead ends: 950 [2020-12-23 09:31:55,947 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 09:31:55,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2020-12-23 09:31:56,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 950. [2020-12-23 09:31:56,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-12-23 09:31:56,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1384 transitions. [2020-12-23 09:31:56,019 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1384 transitions. Word has length 83 [2020-12-23 09:31:56,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:31:56,019 INFO L481 AbstractCegarLoop]: Abstraction has 950 states and 1384 transitions. [2020-12-23 09:31:56,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:31:56,019 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1384 transitions. [2020-12-23 09:31:56,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-23 09:31:56,021 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:31:56,021 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] [2020-12-23 09:31:56,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 09:31:56,021 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:31:56,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:31:56,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1978186147, now seen corresponding path program 1 times [2020-12-23 09:31:56,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:31:56,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013850254] [2020-12-23 09:31:56,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:31:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:31:56,071 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 09:31:56,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013850254] [2020-12-23 09:31:56,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:31:56,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:31:56,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466748604] [2020-12-23 09:31:56,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:31:56,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:31:56,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:31:56,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:31:56,078 INFO L87 Difference]: Start difference. First operand 950 states and 1384 transitions. Second operand 4 states. [2020-12-23 09:31:56,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:31:56,360 INFO L93 Difference]: Finished difference Result 2248 states and 3275 transitions. [2020-12-23 09:31:56,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:31:56,362 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-12-23 09:31:56,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:31:56,369 INFO L225 Difference]: With dead ends: 2248 [2020-12-23 09:31:56,369 INFO L226 Difference]: Without dead ends: 1317 [2020-12-23 09:31:56,372 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 09:31:56,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2020-12-23 09:31:56,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 950. [2020-12-23 09:31:56,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-12-23 09:31:56,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1381 transitions. [2020-12-23 09:31:56,447 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1381 transitions. Word has length 83 [2020-12-23 09:31:56,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:31:56,449 INFO L481 AbstractCegarLoop]: Abstraction has 950 states and 1381 transitions. [2020-12-23 09:31:56,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:31:56,449 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1381 transitions. [2020-12-23 09:31:56,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-23 09:31:56,450 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:31:56,450 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] [2020-12-23 09:31:56,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 09:31:56,451 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:31:56,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:31:56,451 INFO L82 PathProgramCache]: Analyzing trace with hash 630601311, now seen corresponding path program 1 times [2020-12-23 09:31:56,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:31:56,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562961896] [2020-12-23 09:31:56,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:31:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:31:56,506 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 09:31:56,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562961896] [2020-12-23 09:31:56,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:31:56,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:31:56,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019864029] [2020-12-23 09:31:56,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:31:56,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:31:56,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:31:56,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:31:56,511 INFO L87 Difference]: Start difference. First operand 950 states and 1381 transitions. Second operand 4 states. [2020-12-23 09:31:56,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:31:56,733 INFO L93 Difference]: Finished difference Result 2246 states and 3265 transitions. [2020-12-23 09:31:56,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:31:56,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-12-23 09:31:56,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:31:56,742 INFO L225 Difference]: With dead ends: 2246 [2020-12-23 09:31:56,742 INFO L226 Difference]: Without dead ends: 1316 [2020-12-23 09:31:56,744 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 09:31:56,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2020-12-23 09:31:56,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 950. [2020-12-23 09:31:56,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-12-23 09:31:56,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1378 transitions. [2020-12-23 09:31:56,833 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1378 transitions. Word has length 83 [2020-12-23 09:31:56,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:31:56,835 INFO L481 AbstractCegarLoop]: Abstraction has 950 states and 1378 transitions. [2020-12-23 09:31:56,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:31:56,836 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1378 transitions. [2020-12-23 09:31:56,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-23 09:31:56,837 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:31:56,837 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] [2020-12-23 09:31:56,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 09:31:56,837 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:31:56,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:31:56,838 INFO L82 PathProgramCache]: Analyzing trace with hash 576208413, now seen corresponding path program 1 times [2020-12-23 09:31:56,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:31:56,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066153879] [2020-12-23 09:31:56,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:31:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:31:56,897 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 09:31:56,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066153879] [2020-12-23 09:31:56,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:31:56,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:31:56,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756660578] [2020-12-23 09:31:56,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:31:56,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:31:56,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:31:56,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:31:56,899 INFO L87 Difference]: Start difference. First operand 950 states and 1378 transitions. Second operand 3 states. [2020-12-23 09:31:57,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:31:57,079 INFO L93 Difference]: Finished difference Result 2718 states and 3934 transitions. [2020-12-23 09:31:57,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:31:57,080 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-12-23 09:31:57,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:31:57,090 INFO L225 Difference]: With dead ends: 2718 [2020-12-23 09:31:57,090 INFO L226 Difference]: Without dead ends: 1791 [2020-12-23 09:31:57,093 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 09:31:57,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2020-12-23 09:31:57,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1711. [2020-12-23 09:31:57,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1711 states. [2020-12-23 09:31:57,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 2459 transitions. [2020-12-23 09:31:57,224 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 2459 transitions. Word has length 83 [2020-12-23 09:31:57,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:31:57,225 INFO L481 AbstractCegarLoop]: Abstraction has 1711 states and 2459 transitions. [2020-12-23 09:31:57,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:31:57,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 2459 transitions. [2020-12-23 09:31:57,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-23 09:31:57,227 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:31:57,228 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:31:57,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 09:31:57,228 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:31:57,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:31:57,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1980391461, now seen corresponding path program 1 times [2020-12-23 09:31:57,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:31:57,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530149544] [2020-12-23 09:31:57,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:31:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:31:57,302 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 09:31:57,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530149544] [2020-12-23 09:31:57,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:31:57,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:31:57,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900954918] [2020-12-23 09:31:57,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:31:57,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:31:57,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:31:57,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:31:57,306 INFO L87 Difference]: Start difference. First operand 1711 states and 2459 transitions. Second operand 5 states. [2020-12-23 09:31:57,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:31:57,756 INFO L93 Difference]: Finished difference Result 5018 states and 7223 transitions. [2020-12-23 09:31:57,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:31:57,757 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-12-23 09:31:57,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:31:57,776 INFO L225 Difference]: With dead ends: 5018 [2020-12-23 09:31:57,776 INFO L226 Difference]: Without dead ends: 3334 [2020-12-23 09:31:57,786 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 09:31:57,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3334 states. [2020-12-23 09:31:57,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3334 to 1756. [2020-12-23 09:31:57,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1756 states. [2020-12-23 09:31:57,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1756 states to 1756 states and 2490 transitions. [2020-12-23 09:31:57,985 INFO L78 Accepts]: Start accepts. Automaton has 1756 states and 2490 transitions. Word has length 135 [2020-12-23 09:31:57,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:31:57,985 INFO L481 AbstractCegarLoop]: Abstraction has 1756 states and 2490 transitions. [2020-12-23 09:31:57,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:31:57,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1756 states and 2490 transitions. [2020-12-23 09:31:57,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-23 09:31:57,988 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:31:57,989 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:31:57,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 09:31:57,989 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:31:57,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:31:57,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1260472543, now seen corresponding path program 1 times [2020-12-23 09:31:57,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:31:57,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799206971] [2020-12-23 09:31:57,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:31:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:31:58,075 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 09:31:58,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799206971] [2020-12-23 09:31:58,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:31:58,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:31:58,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592865174] [2020-12-23 09:31:58,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:31:58,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:31:58,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:31:58,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:31:58,078 INFO L87 Difference]: Start difference. First operand 1756 states and 2490 transitions. Second operand 5 states. [2020-12-23 09:31:58,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:31:58,444 INFO L93 Difference]: Finished difference Result 4619 states and 6551 transitions. [2020-12-23 09:31:58,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:31:58,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-12-23 09:31:58,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:31:58,460 INFO L225 Difference]: With dead ends: 4619 [2020-12-23 09:31:58,460 INFO L226 Difference]: Without dead ends: 2904 [2020-12-23 09:31:58,465 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 09:31:58,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2020-12-23 09:31:58,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 1768. [2020-12-23 09:31:58,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1768 states. [2020-12-23 09:31:58,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1768 states to 1768 states and 2477 transitions. [2020-12-23 09:31:58,631 INFO L78 Accepts]: Start accepts. Automaton has 1768 states and 2477 transitions. Word has length 135 [2020-12-23 09:31:58,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:31:58,631 INFO L481 AbstractCegarLoop]: Abstraction has 1768 states and 2477 transitions. [2020-12-23 09:31:58,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:31:58,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1768 states and 2477 transitions. [2020-12-23 09:31:58,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-23 09:31:58,634 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:31:58,634 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:31:58,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 09:31:58,635 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:31:58,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:31:58,636 INFO L82 PathProgramCache]: Analyzing trace with hash -773892125, now seen corresponding path program 1 times [2020-12-23 09:31:58,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:31:58,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384583557] [2020-12-23 09:31:58,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:31:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:31:58,707 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 09:31:58,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384583557] [2020-12-23 09:31:58,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:31:58,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:31:58,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539475794] [2020-12-23 09:31:58,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:31:58,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:31:58,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:31:58,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:31:58,710 INFO L87 Difference]: Start difference. First operand 1768 states and 2477 transitions. Second operand 5 states. [2020-12-23 09:31:59,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:31:59,267 INFO L93 Difference]: Finished difference Result 6045 states and 8535 transitions. [2020-12-23 09:31:59,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:31:59,268 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-12-23 09:31:59,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:31:59,315 INFO L225 Difference]: With dead ends: 6045 [2020-12-23 09:31:59,316 INFO L226 Difference]: Without dead ends: 4325 [2020-12-23 09:31:59,323 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 09:31:59,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4325 states. [2020-12-23 09:31:59,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4325 to 1855. [2020-12-23 09:31:59,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1855 states. [2020-12-23 09:31:59,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1855 states to 1855 states and 2564 transitions. [2020-12-23 09:31:59,558 INFO L78 Accepts]: Start accepts. Automaton has 1855 states and 2564 transitions. Word has length 135 [2020-12-23 09:31:59,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:31:59,558 INFO L481 AbstractCegarLoop]: Abstraction has 1855 states and 2564 transitions. [2020-12-23 09:31:59,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:31:59,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1855 states and 2564 transitions. [2020-12-23 09:31:59,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-23 09:31:59,561 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:31:59,561 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:31:59,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 09:31:59,562 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:31:59,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:31:59,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1580493157, now seen corresponding path program 1 times [2020-12-23 09:31:59,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:31:59,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476378136] [2020-12-23 09:31:59,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:31:59,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:31:59,631 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 09:31:59,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476378136] [2020-12-23 09:31:59,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:31:59,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:31:59,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248973763] [2020-12-23 09:31:59,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:31:59,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:31:59,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:31:59,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:31:59,633 INFO L87 Difference]: Start difference. First operand 1855 states and 2564 transitions. Second operand 4 states. [2020-12-23 09:32:00,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:00,319 INFO L93 Difference]: Finished difference Result 6060 states and 8362 transitions. [2020-12-23 09:32:00,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:00,320 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-12-23 09:32:00,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:00,332 INFO L225 Difference]: With dead ends: 6060 [2020-12-23 09:32:00,332 INFO L226 Difference]: Without dead ends: 4258 [2020-12-23 09:32:00,338 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 09:32:00,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4258 states. [2020-12-23 09:32:00,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4258 to 3408. [2020-12-23 09:32:00,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3408 states. [2020-12-23 09:32:00,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3408 states to 3408 states and 4688 transitions. [2020-12-23 09:32:00,724 INFO L78 Accepts]: Start accepts. Automaton has 3408 states and 4688 transitions. Word has length 135 [2020-12-23 09:32:00,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:00,724 INFO L481 AbstractCegarLoop]: Abstraction has 3408 states and 4688 transitions. [2020-12-23 09:32:00,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:00,724 INFO L276 IsEmpty]: Start isEmpty. Operand 3408 states and 4688 transitions. [2020-12-23 09:32:00,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-23 09:32:00,728 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:00,728 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:00,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 09:32:00,728 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:00,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:00,729 INFO L82 PathProgramCache]: Analyzing trace with hash 193811878, now seen corresponding path program 1 times [2020-12-23 09:32:00,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:00,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689801231] [2020-12-23 09:32:00,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:00,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:00,790 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 09:32:00,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689801231] [2020-12-23 09:32:00,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:00,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:32:00,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268556678] [2020-12-23 09:32:00,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:32:00,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:00,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:32:00,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:32:00,793 INFO L87 Difference]: Start difference. First operand 3408 states and 4688 transitions. Second operand 5 states. [2020-12-23 09:32:01,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:01,476 INFO L93 Difference]: Finished difference Result 9149 states and 12667 transitions. [2020-12-23 09:32:01,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:32:01,477 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-12-23 09:32:01,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:01,489 INFO L225 Difference]: With dead ends: 9149 [2020-12-23 09:32:01,490 INFO L226 Difference]: Without dead ends: 5798 [2020-12-23 09:32:01,496 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 09:32:01,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5798 states. [2020-12-23 09:32:01,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5798 to 3492. [2020-12-23 09:32:01,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3492 states. [2020-12-23 09:32:01,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3492 states to 3492 states and 4747 transitions. [2020-12-23 09:32:01,911 INFO L78 Accepts]: Start accepts. Automaton has 3492 states and 4747 transitions. Word has length 135 [2020-12-23 09:32:01,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:01,912 INFO L481 AbstractCegarLoop]: Abstraction has 3492 states and 4747 transitions. [2020-12-23 09:32:01,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:32:01,912 INFO L276 IsEmpty]: Start isEmpty. Operand 3492 states and 4747 transitions. [2020-12-23 09:32:01,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-23 09:32:01,916 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:01,917 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:01,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 09:32:01,917 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:01,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:01,918 INFO L82 PathProgramCache]: Analyzing trace with hash 2070294696, now seen corresponding path program 1 times [2020-12-23 09:32:01,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:01,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368842608] [2020-12-23 09:32:01,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:01,980 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 09:32:01,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368842608] [2020-12-23 09:32:01,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:01,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:32:01,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76031280] [2020-12-23 09:32:01,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:32:01,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:01,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:32:01,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:32:01,983 INFO L87 Difference]: Start difference. First operand 3492 states and 4747 transitions. Second operand 5 states. [2020-12-23 09:32:03,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:03,086 INFO L93 Difference]: Finished difference Result 11187 states and 15349 transitions. [2020-12-23 09:32:03,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:32:03,086 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-12-23 09:32:03,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:03,104 INFO L225 Difference]: With dead ends: 11187 [2020-12-23 09:32:03,105 INFO L226 Difference]: Without dead ends: 7759 [2020-12-23 09:32:03,112 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 09:32:03,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7759 states. [2020-12-23 09:32:03,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7759 to 3651. [2020-12-23 09:32:03,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3651 states. [2020-12-23 09:32:03,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3651 states to 3651 states and 4906 transitions. [2020-12-23 09:32:03,578 INFO L78 Accepts]: Start accepts. Automaton has 3651 states and 4906 transitions. Word has length 135 [2020-12-23 09:32:03,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:03,578 INFO L481 AbstractCegarLoop]: Abstraction has 3651 states and 4906 transitions. [2020-12-23 09:32:03,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:32:03,578 INFO L276 IsEmpty]: Start isEmpty. Operand 3651 states and 4906 transitions. [2020-12-23 09:32:03,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-23 09:32:03,582 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:03,583 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:03,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-23 09:32:03,583 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:03,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:03,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1984432854, now seen corresponding path program 1 times [2020-12-23 09:32:03,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:03,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937755220] [2020-12-23 09:32:03,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:03,641 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 09:32:03,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937755220] [2020-12-23 09:32:03,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:03,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:03,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028382472] [2020-12-23 09:32:03,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:03,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:03,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:03,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:03,643 INFO L87 Difference]: Start difference. First operand 3651 states and 4906 transitions. Second operand 4 states. [2020-12-23 09:32:04,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:04,260 INFO L93 Difference]: Finished difference Result 8875 states and 11917 transitions. [2020-12-23 09:32:04,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:04,261 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-12-23 09:32:04,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:04,273 INFO L225 Difference]: With dead ends: 8875 [2020-12-23 09:32:04,274 INFO L226 Difference]: Without dead ends: 5293 [2020-12-23 09:32:04,280 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 09:32:04,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5293 states. [2020-12-23 09:32:04,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5293 to 3651. [2020-12-23 09:32:04,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3651 states. [2020-12-23 09:32:04,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3651 states to 3651 states and 4889 transitions. [2020-12-23 09:32:04,652 INFO L78 Accepts]: Start accepts. Automaton has 3651 states and 4889 transitions. Word has length 135 [2020-12-23 09:32:04,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:04,653 INFO L481 AbstractCegarLoop]: Abstraction has 3651 states and 4889 transitions. [2020-12-23 09:32:04,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:04,653 INFO L276 IsEmpty]: Start isEmpty. Operand 3651 states and 4889 transitions. [2020-12-23 09:32:04,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-23 09:32:04,657 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:04,657 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:04,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-23 09:32:04,657 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:04,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:04,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1957367252, now seen corresponding path program 1 times [2020-12-23 09:32:04,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:04,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99718012] [2020-12-23 09:32:04,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:04,722 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 09:32:04,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99718012] [2020-12-23 09:32:04,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:04,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:04,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152248968] [2020-12-23 09:32:04,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:04,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:04,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:04,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:04,724 INFO L87 Difference]: Start difference. First operand 3651 states and 4889 transitions. Second operand 4 states. [2020-12-23 09:32:05,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:05,260 INFO L93 Difference]: Finished difference Result 8874 states and 11878 transitions. [2020-12-23 09:32:05,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:05,261 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-12-23 09:32:05,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:05,273 INFO L225 Difference]: With dead ends: 8874 [2020-12-23 09:32:05,274 INFO L226 Difference]: Without dead ends: 5293 [2020-12-23 09:32:05,280 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 09:32:05,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5293 states. [2020-12-23 09:32:05,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5293 to 3651. [2020-12-23 09:32:05,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3651 states. [2020-12-23 09:32:05,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3651 states to 3651 states and 4872 transitions. [2020-12-23 09:32:05,710 INFO L78 Accepts]: Start accepts. Automaton has 3651 states and 4872 transitions. Word has length 135 [2020-12-23 09:32:05,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:05,710 INFO L481 AbstractCegarLoop]: Abstraction has 3651 states and 4872 transitions. [2020-12-23 09:32:05,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:05,710 INFO L276 IsEmpty]: Start isEmpty. Operand 3651 states and 4872 transitions. [2020-12-23 09:32:05,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-23 09:32:05,714 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:05,715 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:05,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-23 09:32:05,715 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:05,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:05,716 INFO L82 PathProgramCache]: Analyzing trace with hash 260263146, now seen corresponding path program 1 times [2020-12-23 09:32:05,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:05,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064548078] [2020-12-23 09:32:05,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:05,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:05,787 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 09:32:05,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064548078] [2020-12-23 09:32:05,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:05,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:05,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017857237] [2020-12-23 09:32:05,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:05,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:05,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:05,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:05,789 INFO L87 Difference]: Start difference. First operand 3651 states and 4872 transitions. Second operand 4 states. [2020-12-23 09:32:06,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:06,403 INFO L93 Difference]: Finished difference Result 9435 states and 12542 transitions. [2020-12-23 09:32:06,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:06,403 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-12-23 09:32:06,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:06,418 INFO L225 Difference]: With dead ends: 9435 [2020-12-23 09:32:06,419 INFO L226 Difference]: Without dead ends: 5855 [2020-12-23 09:32:06,435 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 09:32:06,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5855 states. [2020-12-23 09:32:07,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5855 to 4205. [2020-12-23 09:32:07,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4205 states. [2020-12-23 09:32:07,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4205 states to 4205 states and 5545 transitions. [2020-12-23 09:32:07,007 INFO L78 Accepts]: Start accepts. Automaton has 4205 states and 5545 transitions. Word has length 135 [2020-12-23 09:32:07,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:07,007 INFO L481 AbstractCegarLoop]: Abstraction has 4205 states and 5545 transitions. [2020-12-23 09:32:07,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:07,007 INFO L276 IsEmpty]: Start isEmpty. Operand 4205 states and 5545 transitions. [2020-12-23 09:32:07,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-23 09:32:07,011 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:07,011 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:07,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-23 09:32:07,011 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:07,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:07,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1994367596, now seen corresponding path program 1 times [2020-12-23 09:32:07,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:07,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626284406] [2020-12-23 09:32:07,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:07,066 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 09:32:07,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626284406] [2020-12-23 09:32:07,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:07,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:07,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322968160] [2020-12-23 09:32:07,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:07,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:07,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:07,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:07,069 INFO L87 Difference]: Start difference. First operand 4205 states and 5545 transitions. Second operand 4 states. [2020-12-23 09:32:07,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:07,684 INFO L93 Difference]: Finished difference Result 10033 states and 13234 transitions. [2020-12-23 09:32:07,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:07,685 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-12-23 09:32:07,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:07,695 INFO L225 Difference]: With dead ends: 10033 [2020-12-23 09:32:07,696 INFO L226 Difference]: Without dead ends: 5960 [2020-12-23 09:32:07,703 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 09:32:07,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5960 states. [2020-12-23 09:32:08,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5960 to 4121. [2020-12-23 09:32:08,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4121 states. [2020-12-23 09:32:08,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4121 states to 4121 states and 5388 transitions. [2020-12-23 09:32:08,079 INFO L78 Accepts]: Start accepts. Automaton has 4121 states and 5388 transitions. Word has length 135 [2020-12-23 09:32:08,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:08,080 INFO L481 AbstractCegarLoop]: Abstraction has 4121 states and 5388 transitions. [2020-12-23 09:32:08,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:08,080 INFO L276 IsEmpty]: Start isEmpty. Operand 4121 states and 5388 transitions. [2020-12-23 09:32:08,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-23 09:32:08,084 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:08,084 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:08,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-23 09:32:08,084 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:08,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:08,085 INFO L82 PathProgramCache]: Analyzing trace with hash 2071268394, now seen corresponding path program 1 times [2020-12-23 09:32:08,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:08,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272901697] [2020-12-23 09:32:08,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:08,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:08,142 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 09:32:08,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272901697] [2020-12-23 09:32:08,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:08,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:08,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370965146] [2020-12-23 09:32:08,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:08,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:08,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:08,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:08,144 INFO L87 Difference]: Start difference. First operand 4121 states and 5388 transitions. Second operand 4 states. [2020-12-23 09:32:08,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:08,685 INFO L93 Difference]: Finished difference Result 9210 states and 12026 transitions. [2020-12-23 09:32:08,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:08,685 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-12-23 09:32:08,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:08,691 INFO L225 Difference]: With dead ends: 9210 [2020-12-23 09:32:08,691 INFO L226 Difference]: Without dead ends: 5138 [2020-12-23 09:32:08,698 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 09:32:08,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5138 states. [2020-12-23 09:32:09,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5138 to 4121. [2020-12-23 09:32:09,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4121 states. [2020-12-23 09:32:09,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4121 states to 4121 states and 5313 transitions. [2020-12-23 09:32:09,012 INFO L78 Accepts]: Start accepts. Automaton has 4121 states and 5313 transitions. Word has length 135 [2020-12-23 09:32:09,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:09,013 INFO L481 AbstractCegarLoop]: Abstraction has 4121 states and 5313 transitions. [2020-12-23 09:32:09,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:09,013 INFO L276 IsEmpty]: Start isEmpty. Operand 4121 states and 5313 transitions. [2020-12-23 09:32:09,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-23 09:32:09,016 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:09,017 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:09,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-23 09:32:09,017 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:09,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:09,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1103917740, now seen corresponding path program 1 times [2020-12-23 09:32:09,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:09,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788052159] [2020-12-23 09:32:09,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:09,075 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 09:32:09,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788052159] [2020-12-23 09:32:09,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:09,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:09,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948661601] [2020-12-23 09:32:09,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:09,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:09,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:09,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:09,077 INFO L87 Difference]: Start difference. First operand 4121 states and 5313 transitions. Second operand 4 states. [2020-12-23 09:32:09,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:09,755 INFO L93 Difference]: Finished difference Result 9766 states and 12584 transitions. [2020-12-23 09:32:09,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:09,755 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-12-23 09:32:09,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:09,762 INFO L225 Difference]: With dead ends: 9766 [2020-12-23 09:32:09,762 INFO L226 Difference]: Without dead ends: 5728 [2020-12-23 09:32:09,768 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 09:32:09,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5728 states. [2020-12-23 09:32:10,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5728 to 3959. [2020-12-23 09:32:10,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3959 states. [2020-12-23 09:32:10,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3959 states to 3959 states and 5026 transitions. [2020-12-23 09:32:10,499 INFO L78 Accepts]: Start accepts. Automaton has 3959 states and 5026 transitions. Word has length 135 [2020-12-23 09:32:10,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:10,500 INFO L481 AbstractCegarLoop]: Abstraction has 3959 states and 5026 transitions. [2020-12-23 09:32:10,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:10,500 INFO L276 IsEmpty]: Start isEmpty. Operand 3959 states and 5026 transitions. [2020-12-23 09:32:10,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-23 09:32:10,504 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:10,504 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:10,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-23 09:32:10,505 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:10,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:10,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1930626767, now seen corresponding path program 1 times [2020-12-23 09:32:10,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:10,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406372092] [2020-12-23 09:32:10,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:10,588 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 09:32:10,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406372092] [2020-12-23 09:32:10,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:10,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:10,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776356459] [2020-12-23 09:32:10,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:10,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:10,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:10,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:10,592 INFO L87 Difference]: Start difference. First operand 3959 states and 5026 transitions. Second operand 4 states. [2020-12-23 09:32:11,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:11,224 INFO L93 Difference]: Finished difference Result 9306 states and 11837 transitions. [2020-12-23 09:32:11,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:11,225 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-12-23 09:32:11,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:11,230 INFO L225 Difference]: With dead ends: 9306 [2020-12-23 09:32:11,231 INFO L226 Difference]: Without dead ends: 5477 [2020-12-23 09:32:11,235 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 09:32:11,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5477 states. [2020-12-23 09:32:11,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5477 to 3875. [2020-12-23 09:32:11,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3875 states. [2020-12-23 09:32:11,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3875 states to 3875 states and 4869 transitions. [2020-12-23 09:32:11,713 INFO L78 Accepts]: Start accepts. Automaton has 3875 states and 4869 transitions. Word has length 135 [2020-12-23 09:32:11,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:11,713 INFO L481 AbstractCegarLoop]: Abstraction has 3875 states and 4869 transitions. [2020-12-23 09:32:11,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:11,713 INFO L276 IsEmpty]: Start isEmpty. Operand 3875 states and 4869 transitions. [2020-12-23 09:32:11,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-23 09:32:11,716 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:11,716 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:11,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-23 09:32:11,717 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:11,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:11,717 INFO L82 PathProgramCache]: Analyzing trace with hash -976686609, now seen corresponding path program 1 times [2020-12-23 09:32:11,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:11,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035367155] [2020-12-23 09:32:11,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:11,776 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 09:32:11,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035367155] [2020-12-23 09:32:11,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:11,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:11,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254387125] [2020-12-23 09:32:11,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:32:11,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:11,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:32:11,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:32:11,779 INFO L87 Difference]: Start difference. First operand 3875 states and 4869 transitions. Second operand 4 states. [2020-12-23 09:32:12,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:12,373 INFO L93 Difference]: Finished difference Result 10018 states and 12511 transitions. [2020-12-23 09:32:12,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:32:12,373 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-12-23 09:32:12,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:12,379 INFO L225 Difference]: With dead ends: 10018 [2020-12-23 09:32:12,380 INFO L226 Difference]: Without dead ends: 6252 [2020-12-23 09:32:12,384 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 09:32:12,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6252 states. [2020-12-23 09:32:12,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6252 to 4635. [2020-12-23 09:32:12,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4635 states. [2020-12-23 09:32:12,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4635 states to 4635 states and 5664 transitions. [2020-12-23 09:32:12,804 INFO L78 Accepts]: Start accepts. Automaton has 4635 states and 5664 transitions. Word has length 135 [2020-12-23 09:32:12,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:12,804 INFO L481 AbstractCegarLoop]: Abstraction has 4635 states and 5664 transitions. [2020-12-23 09:32:12,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:32:12,804 INFO L276 IsEmpty]: Start isEmpty. Operand 4635 states and 5664 transitions. [2020-12-23 09:32:12,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-23 09:32:12,808 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:12,808 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:12,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-23 09:32:12,808 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:12,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:12,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1193164148, now seen corresponding path program 1 times [2020-12-23 09:32:12,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:12,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114443627] [2020-12-23 09:32:12,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:12,861 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:32:12,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114443627] [2020-12-23 09:32:12,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:12,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:32:12,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375600576] [2020-12-23 09:32:12,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:32:12,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:12,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:32:12,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:32:12,863 INFO L87 Difference]: Start difference. First operand 4635 states and 5664 transitions. Second operand 5 states. [2020-12-23 09:32:13,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:13,435 INFO L93 Difference]: Finished difference Result 10395 states and 12831 transitions. [2020-12-23 09:32:13,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:32:13,435 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-12-23 09:32:13,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:13,441 INFO L225 Difference]: With dead ends: 10395 [2020-12-23 09:32:13,441 INFO L226 Difference]: Without dead ends: 5841 [2020-12-23 09:32:13,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 09:32:13,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5841 states. [2020-12-23 09:32:13,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5841 to 4647. [2020-12-23 09:32:13,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4647 states. [2020-12-23 09:32:13,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4647 states to 4647 states and 5600 transitions. [2020-12-23 09:32:13,862 INFO L78 Accepts]: Start accepts. Automaton has 4647 states and 5600 transitions. Word has length 135 [2020-12-23 09:32:13,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:13,862 INFO L481 AbstractCegarLoop]: Abstraction has 4647 states and 5600 transitions. [2020-12-23 09:32:13,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:32:13,862 INFO L276 IsEmpty]: Start isEmpty. Operand 4647 states and 5600 transitions. [2020-12-23 09:32:13,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-23 09:32:13,865 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:13,865 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:13,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-23 09:32:13,865 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:13,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:13,866 INFO L82 PathProgramCache]: Analyzing trace with hash 295770870, now seen corresponding path program 1 times [2020-12-23 09:32:13,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:13,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167104275] [2020-12-23 09:32:13,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:13,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:13,924 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:32:13,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167104275] [2020-12-23 09:32:13,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:13,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:13,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097138697] [2020-12-23 09:32:13,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:32:13,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:13,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:32:13,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:32:13,926 INFO L87 Difference]: Start difference. First operand 4647 states and 5600 transitions. Second operand 3 states. [2020-12-23 09:32:14,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:14,612 INFO L93 Difference]: Finished difference Result 12991 states and 15612 transitions. [2020-12-23 09:32:14,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:32:14,612 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 135 [2020-12-23 09:32:14,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:14,622 INFO L225 Difference]: With dead ends: 12991 [2020-12-23 09:32:14,622 INFO L226 Difference]: Without dead ends: 8571 [2020-12-23 09:32:14,629 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 09:32:14,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8571 states. [2020-12-23 09:32:15,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8571 to 8567. [2020-12-23 09:32:15,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8567 states. [2020-12-23 09:32:15,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8567 states to 8567 states and 10236 transitions. [2020-12-23 09:32:15,407 INFO L78 Accepts]: Start accepts. Automaton has 8567 states and 10236 transitions. Word has length 135 [2020-12-23 09:32:15,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:15,408 INFO L481 AbstractCegarLoop]: Abstraction has 8567 states and 10236 transitions. [2020-12-23 09:32:15,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:32:15,408 INFO L276 IsEmpty]: Start isEmpty. Operand 8567 states and 10236 transitions. [2020-12-23 09:32:15,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-23 09:32:15,413 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:15,414 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:15,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-23 09:32:15,414 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:15,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:15,415 INFO L82 PathProgramCache]: Analyzing trace with hash -950651702, now seen corresponding path program 1 times [2020-12-23 09:32:15,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:15,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61078767] [2020-12-23 09:32:15,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:15,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:15,490 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:32:15,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61078767] [2020-12-23 09:32:15,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:15,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:15,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539085711] [2020-12-23 09:32:15,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:32:15,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:15,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:32:15,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:32:15,492 INFO L87 Difference]: Start difference. First operand 8567 states and 10236 transitions. Second operand 3 states. [2020-12-23 09:32:16,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:16,801 INFO L93 Difference]: Finished difference Result 24596 states and 29338 transitions. [2020-12-23 09:32:16,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:32:16,803 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 136 [2020-12-23 09:32:16,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:16,817 INFO L225 Difference]: With dead ends: 24596 [2020-12-23 09:32:16,817 INFO L226 Difference]: Without dead ends: 16256 [2020-12-23 09:32:16,827 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 09:32:16,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16256 states. [2020-12-23 09:32:18,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16256 to 16252. [2020-12-23 09:32:18,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16252 states. [2020-12-23 09:32:18,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16252 states to 16252 states and 19318 transitions. [2020-12-23 09:32:18,196 INFO L78 Accepts]: Start accepts. Automaton has 16252 states and 19318 transitions. Word has length 136 [2020-12-23 09:32:18,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:18,196 INFO L481 AbstractCegarLoop]: Abstraction has 16252 states and 19318 transitions. [2020-12-23 09:32:18,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:32:18,196 INFO L276 IsEmpty]: Start isEmpty. Operand 16252 states and 19318 transitions. [2020-12-23 09:32:18,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-23 09:32:18,205 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:18,205 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:18,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-23 09:32:18,206 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:18,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:18,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1495524276, now seen corresponding path program 1 times [2020-12-23 09:32:18,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:18,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052030954] [2020-12-23 09:32:18,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:18,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:18,242 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 09:32:18,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052030954] [2020-12-23 09:32:18,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:18,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:18,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181111471] [2020-12-23 09:32:18,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:32:18,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:18,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:32:18,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:32:18,245 INFO L87 Difference]: Start difference. First operand 16252 states and 19318 transitions. Second operand 3 states. [2020-12-23 09:32:19,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:19,578 INFO L93 Difference]: Finished difference Result 32056 states and 38128 transitions. [2020-12-23 09:32:19,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:32:19,579 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 136 [2020-12-23 09:32:19,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:19,594 INFO L225 Difference]: With dead ends: 32056 [2020-12-23 09:32:19,594 INFO L226 Difference]: Without dead ends: 16031 [2020-12-23 09:32:19,605 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 09:32:19,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16031 states. [2020-12-23 09:32:21,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16031 to 16031. [2020-12-23 09:32:21,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16031 states. [2020-12-23 09:32:21,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16031 states to 16031 states and 19067 transitions. [2020-12-23 09:32:21,128 INFO L78 Accepts]: Start accepts. Automaton has 16031 states and 19067 transitions. Word has length 136 [2020-12-23 09:32:21,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:21,129 INFO L481 AbstractCegarLoop]: Abstraction has 16031 states and 19067 transitions. [2020-12-23 09:32:21,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:32:21,129 INFO L276 IsEmpty]: Start isEmpty. Operand 16031 states and 19067 transitions. [2020-12-23 09:32:21,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-12-23 09:32:21,134 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:21,135 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:21,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-23 09:32:21,135 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:21,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:21,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1209179887, now seen corresponding path program 1 times [2020-12-23 09:32:21,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:21,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216034018] [2020-12-23 09:32:21,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:21,237 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:32:21,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216034018] [2020-12-23 09:32:21,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:21,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:21,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891902673] [2020-12-23 09:32:21,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:32:21,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:21,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:32:21,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:32:21,239 INFO L87 Difference]: Start difference. First operand 16031 states and 19067 transitions. Second operand 3 states. [2020-12-23 09:32:23,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:23,745 INFO L93 Difference]: Finished difference Result 46259 states and 54999 transitions. [2020-12-23 09:32:23,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:32:23,745 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 137 [2020-12-23 09:32:23,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:23,784 INFO L225 Difference]: With dead ends: 46259 [2020-12-23 09:32:23,785 INFO L226 Difference]: Without dead ends: 30455 [2020-12-23 09:32:23,802 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 09:32:23,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30455 states. [2020-12-23 09:32:26,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30455 to 30451. [2020-12-23 09:32:26,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30451 states. [2020-12-23 09:32:26,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30451 states to 30451 states and 36131 transitions. [2020-12-23 09:32:26,504 INFO L78 Accepts]: Start accepts. Automaton has 30451 states and 36131 transitions. Word has length 137 [2020-12-23 09:32:26,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:26,505 INFO L481 AbstractCegarLoop]: Abstraction has 30451 states and 36131 transitions. [2020-12-23 09:32:26,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:32:26,505 INFO L276 IsEmpty]: Start isEmpty. Operand 30451 states and 36131 transitions. [2020-12-23 09:32:26,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-12-23 09:32:26,516 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:26,516 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:26,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-23 09:32:26,517 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:26,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:26,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1754052461, now seen corresponding path program 1 times [2020-12-23 09:32:26,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:26,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262229727] [2020-12-23 09:32:26,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:26,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:26,551 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 09:32:26,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262229727] [2020-12-23 09:32:26,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:26,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:26,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157228139] [2020-12-23 09:32:26,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:32:26,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:26,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:32:26,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:32:26,553 INFO L87 Difference]: Start difference. First operand 30451 states and 36131 transitions. Second operand 3 states. [2020-12-23 09:32:29,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:29,427 INFO L93 Difference]: Finished difference Result 60455 states and 71757 transitions. [2020-12-23 09:32:29,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:32:29,428 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 137 [2020-12-23 09:32:29,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:29,458 INFO L225 Difference]: With dead ends: 60455 [2020-12-23 09:32:29,458 INFO L226 Difference]: Without dead ends: 30231 [2020-12-23 09:32:29,489 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 09:32:29,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30231 states. [2020-12-23 09:32:32,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30231 to 30231. [2020-12-23 09:32:32,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30231 states. [2020-12-23 09:32:32,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30231 states to 30231 states and 35882 transitions. [2020-12-23 09:32:32,400 INFO L78 Accepts]: Start accepts. Automaton has 30231 states and 35882 transitions. Word has length 137 [2020-12-23 09:32:32,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:32,400 INFO L481 AbstractCegarLoop]: Abstraction has 30231 states and 35882 transitions. [2020-12-23 09:32:32,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:32:32,400 INFO L276 IsEmpty]: Start isEmpty. Operand 30231 states and 35882 transitions. [2020-12-23 09:32:32,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-23 09:32:32,409 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:32,409 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:32,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-23 09:32:32,410 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:32,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:32,410 INFO L82 PathProgramCache]: Analyzing trace with hash 465916591, now seen corresponding path program 1 times [2020-12-23 09:32:32,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:32,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609299214] [2020-12-23 09:32:32,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:32,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:32,491 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:32:32,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609299214] [2020-12-23 09:32:32,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:32,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:32,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242935419] [2020-12-23 09:32:32,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:32:32,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:32,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:32:32,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:32:32,494 INFO L87 Difference]: Start difference. First operand 30231 states and 35882 transitions. Second operand 3 states. [2020-12-23 09:32:37,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:37,746 INFO L93 Difference]: Finished difference Result 88722 states and 105220 transitions. [2020-12-23 09:32:37,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:32:37,746 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2020-12-23 09:32:37,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:37,810 INFO L225 Difference]: With dead ends: 88722 [2020-12-23 09:32:37,810 INFO L226 Difference]: Without dead ends: 58718 [2020-12-23 09:32:37,834 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 09:32:37,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58718 states. [2020-12-23 09:32:43,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58718 to 58714. [2020-12-23 09:32:43,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58714 states. [2020-12-23 09:32:43,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58714 states to 58714 states and 69504 transitions. [2020-12-23 09:32:43,382 INFO L78 Accepts]: Start accepts. Automaton has 58714 states and 69504 transitions. Word has length 138 [2020-12-23 09:32:43,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:43,383 INFO L481 AbstractCegarLoop]: Abstraction has 58714 states and 69504 transitions. [2020-12-23 09:32:43,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:32:43,383 INFO L276 IsEmpty]: Start isEmpty. Operand 58714 states and 69504 transitions. [2020-12-23 09:32:43,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-23 09:32:43,399 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:43,399 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:43,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-23 09:32:43,399 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:43,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:43,400 INFO L82 PathProgramCache]: Analyzing trace with hash -78955983, now seen corresponding path program 1 times [2020-12-23 09:32:43,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:43,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689193196] [2020-12-23 09:32:43,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:43,439 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 09:32:43,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689193196] [2020-12-23 09:32:43,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:43,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:43,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723470146] [2020-12-23 09:32:43,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:32:43,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:43,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:32:43,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:32:43,441 INFO L87 Difference]: Start difference. First operand 58714 states and 69504 transitions. Second operand 3 states. [2020-12-23 09:32:48,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:32:48,962 INFO L93 Difference]: Finished difference Result 116982 states and 138506 transitions. [2020-12-23 09:32:48,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:32:48,962 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2020-12-23 09:32:48,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:32:49,026 INFO L225 Difference]: With dead ends: 116982 [2020-12-23 09:32:49,026 INFO L226 Difference]: Without dead ends: 58495 [2020-12-23 09:32:49,062 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 09:32:49,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58495 states. [2020-12-23 09:32:54,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58495 to 58495. [2020-12-23 09:32:54,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58495 states. [2020-12-23 09:32:54,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58495 states to 58495 states and 69257 transitions. [2020-12-23 09:32:54,480 INFO L78 Accepts]: Start accepts. Automaton has 58495 states and 69257 transitions. Word has length 138 [2020-12-23 09:32:54,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:32:54,480 INFO L481 AbstractCegarLoop]: Abstraction has 58495 states and 69257 transitions. [2020-12-23 09:32:54,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:32:54,480 INFO L276 IsEmpty]: Start isEmpty. Operand 58495 states and 69257 transitions. [2020-12-23 09:32:54,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-23 09:32:54,491 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:32:54,492 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:32:54,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-23 09:32:54,492 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:32:54,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:32:54,492 INFO L82 PathProgramCache]: Analyzing trace with hash 889768748, now seen corresponding path program 1 times [2020-12-23 09:32:54,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:32:54,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644879819] [2020-12-23 09:32:54,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:32:54,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:32:54,552 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:32:54,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644879819] [2020-12-23 09:32:54,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:32:54,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:32:54,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713578913] [2020-12-23 09:32:54,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:32:54,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:32:54,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:32:54,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:32:54,555 INFO L87 Difference]: Start difference. First operand 58495 states and 69257 transitions. Second operand 3 states. [2020-12-23 09:33:04,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:04,473 INFO L93 Difference]: Finished difference Result 169041 states and 200145 transitions. [2020-12-23 09:33:04,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:33:04,474 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2020-12-23 09:33:04,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:04,645 INFO L225 Difference]: With dead ends: 169041 [2020-12-23 09:33:04,645 INFO L226 Difference]: Without dead ends: 110773 [2020-12-23 09:33:04,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:33:04,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110773 states. [2020-12-23 09:33:15,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110773 to 110769. [2020-12-23 09:33:15,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110769 states. [2020-12-23 09:33:15,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110769 states to 110769 states and 130989 transitions. [2020-12-23 09:33:15,484 INFO L78 Accepts]: Start accepts. Automaton has 110769 states and 130989 transitions. Word has length 139 [2020-12-23 09:33:15,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:15,484 INFO L481 AbstractCegarLoop]: Abstraction has 110769 states and 130989 transitions. [2020-12-23 09:33:15,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:33:15,485 INFO L276 IsEmpty]: Start isEmpty. Operand 110769 states and 130989 transitions. [2020-12-23 09:33:15,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-23 09:33:15,514 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:15,527 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:33:15,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-12-23 09:33:15,527 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:15,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:15,528 INFO L82 PathProgramCache]: Analyzing trace with hash 344896174, now seen corresponding path program 1 times [2020-12-23 09:33:15,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:15,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556472520] [2020-12-23 09:33:15,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:15,569 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 09:33:15,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556472520] [2020-12-23 09:33:15,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:15,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:33:15,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234943876] [2020-12-23 09:33:15,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:33:15,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:15,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:33:15,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:33:15,572 INFO L87 Difference]: Start difference. First operand 110769 states and 130989 transitions. Second operand 3 states. [2020-12-23 09:33:26,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:26,143 INFO L93 Difference]: Finished difference Result 221109 states and 261497 transitions. [2020-12-23 09:33:26,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:33:26,143 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2020-12-23 09:33:26,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:26,305 INFO L225 Difference]: With dead ends: 221109 [2020-12-23 09:33:26,306 INFO L226 Difference]: Without dead ends: 110551 [2020-12-23 09:33:26,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:33:26,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110551 states. [2020-12-23 09:33:36,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110551 to 110551. [2020-12-23 09:33:36,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110551 states. [2020-12-23 09:33:36,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110551 states to 110551 states and 130744 transitions. [2020-12-23 09:33:36,911 INFO L78 Accepts]: Start accepts. Automaton has 110551 states and 130744 transitions. Word has length 139 [2020-12-23 09:33:36,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:33:36,912 INFO L481 AbstractCegarLoop]: Abstraction has 110551 states and 130744 transitions. [2020-12-23 09:33:36,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:33:36,912 INFO L276 IsEmpty]: Start isEmpty. Operand 110551 states and 130744 transitions. [2020-12-23 09:33:36,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-12-23 09:33:36,929 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:33:36,930 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:33:36,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-12-23 09:33:36,930 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:33:36,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:33:36,930 INFO L82 PathProgramCache]: Analyzing trace with hash 314143892, now seen corresponding path program 1 times [2020-12-23 09:33:36,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:33:36,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464241867] [2020-12-23 09:33:36,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:33:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:33:37,006 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:33:37,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464241867] [2020-12-23 09:33:37,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:33:37,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:33:37,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447225333] [2020-12-23 09:33:37,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:33:37,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:33:37,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:33:37,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:33:37,011 INFO L87 Difference]: Start difference. First operand 110551 states and 130744 transitions. Second operand 4 states. [2020-12-23 09:33:56,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:33:56,638 INFO L93 Difference]: Finished difference Result 322190 states and 379757 transitions. [2020-12-23 09:33:56,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:33:56,639 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2020-12-23 09:33:56,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:33:57,051 INFO L225 Difference]: With dead ends: 322190 [2020-12-23 09:33:57,051 INFO L226 Difference]: Without dead ends: 160883 [2020-12-23 09:33:57,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:33:57,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160883 states.