/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/kundu.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 09:28:31,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 09:28:31,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 09:28:31,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 09:28:31,256 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 09:28:31,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 09:28:31,264 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 09:28:31,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 09:28:31,274 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 09:28:31,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 09:28:31,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 09:28:31,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 09:28:31,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 09:28:31,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 09:28:31,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 09:28:31,299 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 09:28:31,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 09:28:31,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 09:28:31,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 09:28:31,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 09:28:31,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 09:28:31,325 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 09:28:31,326 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 09:28:31,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 09:28:31,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 09:28:31,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 09:28:31,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 09:28:31,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 09:28:31,353 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 09:28:31,355 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 09:28:31,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 09:28:31,356 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 09:28:31,356 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 09:28:31,357 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 09:28:31,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 09:28:31,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 09:28:31,359 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 09:28:31,413 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 09:28:31,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 09:28:31,419 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 09:28:31,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 09:28:31,420 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 09:28:31,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 09:28:31,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 09:28:31,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 09:28:31,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 09:28:31,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 09:28:31,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 09:28:31,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 09:28:31,423 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 09:28:31,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 09:28:31,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 09:28:31,424 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 09:28:31,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 09:28:31,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 09:28:31,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 09:28:31,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 09:28:31,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 09:28:31,425 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 09:28:31,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 09:28:31,455 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 09:28:31,456 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 09:28:31,456 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 09:28:31,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 09:28:31,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 09:28:31,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 09:28:31,955 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 09:28:31,955 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 09:28:31,956 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/kundu.cil.c [2020-12-23 09:28:32,037 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1bcb9f4c4/db9442f16ae3428bbb9c402e1ad3f97b/FLAGb0070df7c [2020-12-23 09:28:32,663 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 09:28:32,664 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/systemc/kundu.cil.c [2020-12-23 09:28:32,689 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1bcb9f4c4/db9442f16ae3428bbb9c402e1ad3f97b/FLAGb0070df7c [2020-12-23 09:28:32,943 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1bcb9f4c4/db9442f16ae3428bbb9c402e1ad3f97b [2020-12-23 09:28:32,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 09:28:32,949 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 09:28:32,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 09:28:32,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 09:28:32,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 09:28:32,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:28:32" (1/1) ... [2020-12-23 09:28:32,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f27cdc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:28:32, skipping insertion in model container [2020-12-23 09:28:32,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:28:32" (1/1) ... [2020-12-23 09:28:32,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 09:28:33,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 09:28:33,184 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/kundu.cil.c[330,343] left hand side expression in assignment: lhs: VariableLHS[~__retres3~0,] left hand side expression in assignment: lhs: VariableLHS[~__retres3~0,] left hand side expression in assignment: lhs: VariableLHS[~__retres3~0,] left hand side expression in assignment: lhs: VariableLHS[~data_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~data_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_1_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_1_st~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[~timer~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~e~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~e~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_2_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_2_st~0,GLOBAL] 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[~timer~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c~1,] left hand side expression in assignment: lhs: VariableLHS[~C_1_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_st~0,GLOBAL] 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[~__retres1~2,] left hand side expression in assignment: lhs: VariableLHS[~P_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_st~0,GLOBAL] 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[~__retres1~3,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~3,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~P_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~P_2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~C_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_1_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_2_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~clk~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~clk~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_1_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_2_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~P_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~1,] left hand side expression in assignment: lhs: VariableLHS[~P_2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~1,] left hand side expression in assignment: lhs: VariableLHS[~C_1_st~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___0~2,] left hand side expression in assignment: lhs: VariableLHS[~P_1_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_2_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~num~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~clk~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max_loop~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~timer~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_1_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_2_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~count~0,] left hand side expression in assignment: lhs: VariableLHS[~__retres2~1,] [2020-12-23 09:28:33,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:28:33,312 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 09:28:33,332 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/kundu.cil.c[330,343] left hand side expression in assignment: lhs: VariableLHS[~__retres3~0,] left hand side expression in assignment: lhs: VariableLHS[~__retres3~0,] left hand side expression in assignment: lhs: VariableLHS[~__retres3~0,] left hand side expression in assignment: lhs: VariableLHS[~data_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~data_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_1_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_1_st~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[~timer~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~e~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~e~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_2_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_2_st~0,GLOBAL] 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[~timer~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c~1,] left hand side expression in assignment: lhs: VariableLHS[~C_1_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_st~0,GLOBAL] 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[~__retres1~2,] left hand side expression in assignment: lhs: VariableLHS[~P_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_st~0,GLOBAL] 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[~__retres1~3,] left hand side expression in assignment: lhs: VariableLHS[~__retres1~3,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~P_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~P_2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~C_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_1_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_2_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~clk~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~clk~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_1_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_2_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_ev~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~P_1_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~1,] left hand side expression in assignment: lhs: VariableLHS[~P_2_st~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~1,] left hand side expression in assignment: lhs: VariableLHS[~C_1_st~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___0~2,] left hand side expression in assignment: lhs: VariableLHS[~P_1_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_2_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~num~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~clk~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max_loop~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~timer~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_1_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~P_2_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~C_1_pc~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~count~0,] left hand side expression in assignment: lhs: VariableLHS[~__retres2~1,] [2020-12-23 09:28:33,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:28:33,470 INFO L208 MainTranslator]: Completed translation [2020-12-23 09:28:33,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:28:33 WrapperNode [2020-12-23 09:28:33,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 09:28:33,474 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 09:28:33,475 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 09:28:33,475 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 09:28:33,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:28:33" (1/1) ... [2020-12-23 09:28:33,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:28:33" (1/1) ... [2020-12-23 09:28:33,622 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 09:28:33,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 09:28:33,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 09:28:33,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 09:28:33,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:28:33" (1/1) ... [2020-12-23 09:28:33,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:28:33" (1/1) ... [2020-12-23 09:28:33,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:28:33" (1/1) ... [2020-12-23 09:28:33,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:28:33" (1/1) ... [2020-12-23 09:28:33,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:28:33" (1/1) ... [2020-12-23 09:28:33,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:28:33" (1/1) ... [2020-12-23 09:28:33,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:28:33" (1/1) ... [2020-12-23 09:28:33,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 09:28:33,697 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 09:28:33,697 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 09:28:33,697 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 09:28:33,698 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:28:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 09:28:33,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 09:28:33,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 09:28:33,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 09:28:33,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 09:28:34,743 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 09:28:34,743 INFO L299 CfgBuilder]: Removed 95 assume(true) statements. [2020-12-23 09:28:34,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:28:34 BoogieIcfgContainer [2020-12-23 09:28:34,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 09:28:34,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 09:28:34,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 09:28:34,751 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 09:28:34,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 09:28:32" (1/3) ... [2020-12-23 09:28:34,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef16198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:28:34, skipping insertion in model container [2020-12-23 09:28:34,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:28:33" (2/3) ... [2020-12-23 09:28:34,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef16198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:28:34, skipping insertion in model container [2020-12-23 09:28:34,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:28:34" (3/3) ... [2020-12-23 09:28:34,755 INFO L111 eAbstractionObserver]: Analyzing ICFG kundu.cil.c [2020-12-23 09:28:34,762 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 09:28:34,768 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-23 09:28:34,788 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-23 09:28:34,818 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 09:28:34,818 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 09:28:34,819 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 09:28:34,819 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 09:28:34,819 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 09:28:34,819 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 09:28:34,819 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 09:28:34,820 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 09:28:34,842 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2020-12-23 09:28:34,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-23 09:28:34,851 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:28:34,852 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] [2020-12-23 09:28:34,853 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:28:34,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:28:34,864 INFO L82 PathProgramCache]: Analyzing trace with hash 805260304, now seen corresponding path program 1 times [2020-12-23 09:28:34,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:28:34,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799412683] [2020-12-23 09:28:34,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:28:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:28:35,105 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 09:28:35,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799412683] [2020-12-23 09:28:35,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:28:35,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:28:35,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832777796] [2020-12-23 09:28:35,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:28:35,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:28:35,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:28:35,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:28:35,130 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 3 states. [2020-12-23 09:28:35,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:28:35,201 INFO L93 Difference]: Finished difference Result 356 states and 544 transitions. [2020-12-23 09:28:35,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:28:35,204 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-12-23 09:28:35,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:28:35,219 INFO L225 Difference]: With dead ends: 356 [2020-12-23 09:28:35,220 INFO L226 Difference]: Without dead ends: 176 [2020-12-23 09:28:35,224 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 09:28:35,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-12-23 09:28:35,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2020-12-23 09:28:35,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-12-23 09:28:35,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 259 transitions. [2020-12-23 09:28:35,302 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 259 transitions. Word has length 40 [2020-12-23 09:28:35,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:28:35,303 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 259 transitions. [2020-12-23 09:28:35,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:28:35,303 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 259 transitions. [2020-12-23 09:28:35,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-23 09:28:35,307 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:28:35,307 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] [2020-12-23 09:28:35,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 09:28:35,309 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:28:35,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:28:35,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1199627090, now seen corresponding path program 1 times [2020-12-23 09:28:35,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:28:35,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46818763] [2020-12-23 09:28:35,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:28:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:28:35,471 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 09:28:35,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46818763] [2020-12-23 09:28:35,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:28:35,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:28:35,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733796492] [2020-12-23 09:28:35,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:28:35,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:28:35,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:28:35,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:28:35,477 INFO L87 Difference]: Start difference. First operand 176 states and 259 transitions. Second operand 5 states. [2020-12-23 09:28:35,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:28:35,792 INFO L93 Difference]: Finished difference Result 641 states and 944 transitions. [2020-12-23 09:28:35,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:28:35,792 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-12-23 09:28:35,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:28:35,798 INFO L225 Difference]: With dead ends: 641 [2020-12-23 09:28:35,798 INFO L226 Difference]: Without dead ends: 478 [2020-12-23 09:28:35,800 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 09:28:35,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2020-12-23 09:28:35,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 188. [2020-12-23 09:28:35,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-12-23 09:28:35,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 271 transitions. [2020-12-23 09:28:35,880 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 271 transitions. Word has length 40 [2020-12-23 09:28:35,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:28:35,882 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 271 transitions. [2020-12-23 09:28:35,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:28:35,882 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 271 transitions. [2020-12-23 09:28:35,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-23 09:28:35,884 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:28:35,884 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] [2020-12-23 09:28:35,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 09:28:35,885 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:28:35,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:28:35,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1709136812, now seen corresponding path program 1 times [2020-12-23 09:28:35,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:28:35,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108271548] [2020-12-23 09:28:35,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:28:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:28:35,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:28:35,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108271548] [2020-12-23 09:28:35,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:28:35,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:28:35,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38893185] [2020-12-23 09:28:35,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:28:35,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:28:35,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:28:35,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:28:35,972 INFO L87 Difference]: Start difference. First operand 188 states and 271 transitions. Second operand 4 states. [2020-12-23 09:28:36,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:28:36,137 INFO L93 Difference]: Finished difference Result 657 states and 945 transitions. [2020-12-23 09:28:36,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:28:36,138 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-12-23 09:28:36,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:28:36,143 INFO L225 Difference]: With dead ends: 657 [2020-12-23 09:28:36,144 INFO L226 Difference]: Without dead ends: 477 [2020-12-23 09:28:36,145 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 09:28:36,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2020-12-23 09:28:36,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 421. [2020-12-23 09:28:36,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-12-23 09:28:36,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 609 transitions. [2020-12-23 09:28:36,236 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 609 transitions. Word has length 40 [2020-12-23 09:28:36,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:28:36,239 INFO L481 AbstractCegarLoop]: Abstraction has 421 states and 609 transitions. [2020-12-23 09:28:36,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:28:36,240 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 609 transitions. [2020-12-23 09:28:36,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-23 09:28:36,241 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:28:36,242 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] [2020-12-23 09:28:36,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 09:28:36,243 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:28:36,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:28:36,244 INFO L82 PathProgramCache]: Analyzing trace with hash 913312853, now seen corresponding path program 1 times [2020-12-23 09:28:36,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:28:36,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007821570] [2020-12-23 09:28:36,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:28:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:28:36,372 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 09:28:36,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007821570] [2020-12-23 09:28:36,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:28:36,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:28:36,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558161334] [2020-12-23 09:28:36,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:28:36,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:28:36,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:28:36,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:28:36,379 INFO L87 Difference]: Start difference. First operand 421 states and 609 transitions. Second operand 5 states. [2020-12-23 09:28:36,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:28:36,558 INFO L93 Difference]: Finished difference Result 1193 states and 1744 transitions. [2020-12-23 09:28:36,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:28:36,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-12-23 09:28:36,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:28:36,564 INFO L225 Difference]: With dead ends: 1193 [2020-12-23 09:28:36,564 INFO L226 Difference]: Without dead ends: 790 [2020-12-23 09:28:36,566 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 09:28:36,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2020-12-23 09:28:36,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 430. [2020-12-23 09:28:36,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-12-23 09:28:36,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 613 transitions. [2020-12-23 09:28:36,606 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 613 transitions. Word has length 40 [2020-12-23 09:28:36,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:28:36,606 INFO L481 AbstractCegarLoop]: Abstraction has 430 states and 613 transitions. [2020-12-23 09:28:36,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:28:36,606 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 613 transitions. [2020-12-23 09:28:36,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-23 09:28:36,608 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:28:36,608 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] [2020-12-23 09:28:36,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 09:28:36,608 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:28:36,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:28:36,609 INFO L82 PathProgramCache]: Analyzing trace with hash -892125481, now seen corresponding path program 1 times [2020-12-23 09:28:36,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:28:36,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921941233] [2020-12-23 09:28:36,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:28:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:28:36,655 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 09:28:36,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921941233] [2020-12-23 09:28:36,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:28:36,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:28:36,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629973481] [2020-12-23 09:28:36,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:28:36,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:28:36,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:28:36,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:28:36,657 INFO L87 Difference]: Start difference. First operand 430 states and 613 transitions. Second operand 4 states. [2020-12-23 09:28:36,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:28:36,865 INFO L93 Difference]: Finished difference Result 1588 states and 2260 transitions. [2020-12-23 09:28:36,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:28:36,866 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-12-23 09:28:36,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:28:36,872 INFO L225 Difference]: With dead ends: 1588 [2020-12-23 09:28:36,873 INFO L226 Difference]: Without dead ends: 1178 [2020-12-23 09:28:36,874 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 09:28:36,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2020-12-23 09:28:36,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1103. [2020-12-23 09:28:36,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-12-23 09:28:36,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1546 transitions. [2020-12-23 09:28:36,954 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1546 transitions. Word has length 40 [2020-12-23 09:28:36,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:28:36,954 INFO L481 AbstractCegarLoop]: Abstraction has 1103 states and 1546 transitions. [2020-12-23 09:28:36,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:28:36,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1546 transitions. [2020-12-23 09:28:36,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-23 09:28:36,956 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:28:36,956 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] [2020-12-23 09:28:36,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 09:28:36,957 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:28:36,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:28:36,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1178051785, now seen corresponding path program 1 times [2020-12-23 09:28:36,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:28:36,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554024911] [2020-12-23 09:28:36,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:28:36,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:28:37,001 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 09:28:37,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554024911] [2020-12-23 09:28:37,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:28:37,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:28:37,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776759490] [2020-12-23 09:28:37,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:28:37,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:28:37,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:28:37,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:28:37,004 INFO L87 Difference]: Start difference. First operand 1103 states and 1546 transitions. Second operand 3 states. [2020-12-23 09:28:37,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:28:37,175 INFO L93 Difference]: Finished difference Result 2554 states and 3575 transitions. [2020-12-23 09:28:37,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:28:37,176 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-12-23 09:28:37,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:28:37,187 INFO L225 Difference]: With dead ends: 2554 [2020-12-23 09:28:37,187 INFO L226 Difference]: Without dead ends: 1472 [2020-12-23 09:28:37,189 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 09:28:37,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2020-12-23 09:28:37,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1440. [2020-12-23 09:28:37,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1440 states. [2020-12-23 09:28:37,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 1992 transitions. [2020-12-23 09:28:37,327 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 1992 transitions. Word has length 41 [2020-12-23 09:28:37,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:28:37,327 INFO L481 AbstractCegarLoop]: Abstraction has 1440 states and 1992 transitions. [2020-12-23 09:28:37,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:28:37,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 1992 transitions. [2020-12-23 09:28:37,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-23 09:28:37,333 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:28:37,333 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] [2020-12-23 09:28:37,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 09:28:37,334 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:28:37,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:28:37,339 INFO L82 PathProgramCache]: Analyzing trace with hash 2143426552, now seen corresponding path program 1 times [2020-12-23 09:28:37,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:28:37,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649152214] [2020-12-23 09:28:37,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:28:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:28:37,384 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 09:28:37,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649152214] [2020-12-23 09:28:37,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:28:37,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:28:37,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253799989] [2020-12-23 09:28:37,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:28:37,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:28:37,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:28:37,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:28:37,387 INFO L87 Difference]: Start difference. First operand 1440 states and 1992 transitions. Second operand 5 states. [2020-12-23 09:28:37,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:28:37,699 INFO L93 Difference]: Finished difference Result 4243 states and 5974 transitions. [2020-12-23 09:28:37,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:28:37,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-12-23 09:28:37,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:28:37,714 INFO L225 Difference]: With dead ends: 4243 [2020-12-23 09:28:37,715 INFO L226 Difference]: Without dead ends: 2828 [2020-12-23 09:28:37,717 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 09:28:37,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2828 states. [2020-12-23 09:28:37,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2828 to 1482. [2020-12-23 09:28:37,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1482 states. [2020-12-23 09:28:37,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 2019 transitions. [2020-12-23 09:28:37,835 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 2019 transitions. Word has length 41 [2020-12-23 09:28:37,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:28:37,835 INFO L481 AbstractCegarLoop]: Abstraction has 1482 states and 2019 transitions. [2020-12-23 09:28:37,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:28:37,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 2019 transitions. [2020-12-23 09:28:37,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-23 09:28:37,836 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:28:37,836 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] [2020-12-23 09:28:37,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 09:28:37,837 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:28:37,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:28:37,837 INFO L82 PathProgramCache]: Analyzing trace with hash 555078650, now seen corresponding path program 1 times [2020-12-23 09:28:37,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:28:37,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104671302] [2020-12-23 09:28:37,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:28:37,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:28:37,883 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 09:28:37,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104671302] [2020-12-23 09:28:37,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:28:37,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:28:37,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751098983] [2020-12-23 09:28:37,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:28:37,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:28:37,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:28:37,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:28:37,886 INFO L87 Difference]: Start difference. First operand 1482 states and 2019 transitions. Second operand 4 states. [2020-12-23 09:28:38,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:28:38,260 INFO L93 Difference]: Finished difference Result 5407 states and 7424 transitions. [2020-12-23 09:28:38,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:28:38,261 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-12-23 09:28:38,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:28:38,282 INFO L225 Difference]: With dead ends: 5407 [2020-12-23 09:28:38,282 INFO L226 Difference]: Without dead ends: 4038 [2020-12-23 09:28:38,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 09:28:38,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4038 states. [2020-12-23 09:28:38,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4038 to 2334. [2020-12-23 09:28:38,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2334 states. [2020-12-23 09:28:38,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3190 transitions. [2020-12-23 09:28:38,462 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3190 transitions. Word has length 41 [2020-12-23 09:28:38,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:28:38,462 INFO L481 AbstractCegarLoop]: Abstraction has 2334 states and 3190 transitions. [2020-12-23 09:28:38,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:28:38,462 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3190 transitions. [2020-12-23 09:28:38,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-23 09:28:38,463 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:28:38,463 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] [2020-12-23 09:28:38,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 09:28:38,464 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:28:38,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:28:38,464 INFO L82 PathProgramCache]: Analyzing trace with hash 2112971018, now seen corresponding path program 1 times [2020-12-23 09:28:38,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:28:38,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909331008] [2020-12-23 09:28:38,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:28:38,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:28:38,573 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 09:28:38,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909331008] [2020-12-23 09:28:38,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:28:38,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:28:38,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449024840] [2020-12-23 09:28:38,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:28:38,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:28:38,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:28:38,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:28:38,575 INFO L87 Difference]: Start difference. First operand 2334 states and 3190 transitions. Second operand 5 states. [2020-12-23 09:28:39,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:28:39,172 INFO L93 Difference]: Finished difference Result 8228 states and 11318 transitions. [2020-12-23 09:28:39,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 09:28:39,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-12-23 09:28:39,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:28:39,211 INFO L225 Difference]: With dead ends: 8228 [2020-12-23 09:28:39,211 INFO L226 Difference]: Without dead ends: 6506 [2020-12-23 09:28:39,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:28:39,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6506 states. [2020-12-23 09:28:39,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6506 to 3825. [2020-12-23 09:28:39,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3825 states. [2020-12-23 09:28:39,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3825 states to 3825 states and 5230 transitions. [2020-12-23 09:28:39,622 INFO L78 Accepts]: Start accepts. Automaton has 3825 states and 5230 transitions. Word has length 48 [2020-12-23 09:28:39,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:28:39,623 INFO L481 AbstractCegarLoop]: Abstraction has 3825 states and 5230 transitions. [2020-12-23 09:28:39,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:28:39,623 INFO L276 IsEmpty]: Start isEmpty. Operand 3825 states and 5230 transitions. [2020-12-23 09:28:39,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-23 09:28:39,624 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:28:39,625 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] [2020-12-23 09:28:39,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 09:28:39,625 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:28:39,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:28:39,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1420212558, now seen corresponding path program 1 times [2020-12-23 09:28:39,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:28:39,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924919816] [2020-12-23 09:28:39,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:28:39,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:28:39,707 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 09:28:39,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924919816] [2020-12-23 09:28:39,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:28:39,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:28:39,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500497141] [2020-12-23 09:28:39,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:28:39,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:28:39,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:28:39,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:28:39,712 INFO L87 Difference]: Start difference. First operand 3825 states and 5230 transitions. Second operand 3 states. [2020-12-23 09:28:40,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:28:40,369 INFO L93 Difference]: Finished difference Result 10814 states and 14716 transitions. [2020-12-23 09:28:40,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:28:40,371 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-12-23 09:28:40,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:28:40,413 INFO L225 Difference]: With dead ends: 10814 [2020-12-23 09:28:40,413 INFO L226 Difference]: Without dead ends: 7014 [2020-12-23 09:28:40,420 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 09:28:40,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7014 states. [2020-12-23 09:28:40,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7014 to 6929. [2020-12-23 09:28:40,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6929 states. [2020-12-23 09:28:40,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6929 states to 6929 states and 9289 transitions. [2020-12-23 09:28:40,996 INFO L78 Accepts]: Start accepts. Automaton has 6929 states and 9289 transitions. Word has length 52 [2020-12-23 09:28:40,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:28:40,996 INFO L481 AbstractCegarLoop]: Abstraction has 6929 states and 9289 transitions. [2020-12-23 09:28:40,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:28:40,996 INFO L276 IsEmpty]: Start isEmpty. Operand 6929 states and 9289 transitions. [2020-12-23 09:28:40,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-23 09:28:40,998 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:28:40,998 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] [2020-12-23 09:28:40,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 09:28:40,998 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:28:40,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:28:40,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1475283929, now seen corresponding path program 1 times [2020-12-23 09:28:40,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:28:40,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652303916] [2020-12-23 09:28:41,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:28:41,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:28:41,117 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 09:28:41,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652303916] [2020-12-23 09:28:41,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:28:41,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 09:28:41,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162350928] [2020-12-23 09:28:41,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:28:41,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:28:41,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:28:41,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:28:41,121 INFO L87 Difference]: Start difference. First operand 6929 states and 9289 transitions. Second operand 6 states. [2020-12-23 09:28:42,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:28:42,392 INFO L93 Difference]: Finished difference Result 19477 states and 26259 transitions. [2020-12-23 09:28:42,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 09:28:42,393 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-12-23 09:28:42,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:28:42,451 INFO L225 Difference]: With dead ends: 19477 [2020-12-23 09:28:42,451 INFO L226 Difference]: Without dead ends: 13516 [2020-12-23 09:28:42,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-23 09:28:42,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13516 states. [2020-12-23 09:28:43,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13516 to 8699. [2020-12-23 09:28:43,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8699 states. [2020-12-23 09:28:43,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8699 states to 8699 states and 11682 transitions. [2020-12-23 09:28:43,244 INFO L78 Accepts]: Start accepts. Automaton has 8699 states and 11682 transitions. Word has length 53 [2020-12-23 09:28:43,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:28:43,246 INFO L481 AbstractCegarLoop]: Abstraction has 8699 states and 11682 transitions. [2020-12-23 09:28:43,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:28:43,246 INFO L276 IsEmpty]: Start isEmpty. Operand 8699 states and 11682 transitions. [2020-12-23 09:28:43,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-23 09:28:43,247 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:28:43,248 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2020-12-23 09:28:43,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 09:28:43,248 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:28:43,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:28:43,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1170295472, now seen corresponding path program 1 times [2020-12-23 09:28:43,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:28:43,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695101207] [2020-12-23 09:28:43,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:28:43,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:28:43,304 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-23 09:28:43,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695101207] [2020-12-23 09:28:43,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:28:43,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:28:43,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429253005] [2020-12-23 09:28:43,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:28:43,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:28:43,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:28:43,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:28:43,307 INFO L87 Difference]: Start difference. First operand 8699 states and 11682 transitions. Second operand 3 states. [2020-12-23 09:28:44,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:28:44,270 INFO L93 Difference]: Finished difference Result 25130 states and 33481 transitions. [2020-12-23 09:28:44,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:28:44,270 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-12-23 09:28:44,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:28:44,309 INFO L225 Difference]: With dead ends: 25130 [2020-12-23 09:28:44,309 INFO L226 Difference]: Without dead ends: 16456 [2020-12-23 09:28:44,324 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 09:28:44,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16456 states. [2020-12-23 09:28:45,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16456 to 16450. [2020-12-23 09:28:45,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16450 states. [2020-12-23 09:28:45,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16450 states to 16450 states and 21503 transitions. [2020-12-23 09:28:45,899 INFO L78 Accepts]: Start accepts. Automaton has 16450 states and 21503 transitions. Word has length 57 [2020-12-23 09:28:45,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:28:45,899 INFO L481 AbstractCegarLoop]: Abstraction has 16450 states and 21503 transitions. [2020-12-23 09:28:45,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:28:45,899 INFO L276 IsEmpty]: Start isEmpty. Operand 16450 states and 21503 transitions. [2020-12-23 09:28:45,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-23 09:28:45,901 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:28:45,901 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] [2020-12-23 09:28:45,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 09:28:45,902 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:28:45,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:28:45,903 INFO L82 PathProgramCache]: Analyzing trace with hash 171117839, now seen corresponding path program 1 times [2020-12-23 09:28:45,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:28:45,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566513638] [2020-12-23 09:28:45,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:28:45,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:28:45,945 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 09:28:45,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566513638] [2020-12-23 09:28:45,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:28:45,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:28:45,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762775824] [2020-12-23 09:28:45,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:28:45,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:28:45,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:28:45,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:28:45,947 INFO L87 Difference]: Start difference. First operand 16450 states and 21503 transitions. Second operand 5 states. [2020-12-23 09:28:47,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:28:47,163 INFO L93 Difference]: Finished difference Result 34582 states and 45486 transitions. [2020-12-23 09:28:47,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:28:47,164 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-12-23 09:28:47,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:28:47,208 INFO L225 Difference]: With dead ends: 34582 [2020-12-23 09:28:47,208 INFO L226 Difference]: Without dead ends: 21744 [2020-12-23 09:28:47,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:28:47,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21744 states. [2020-12-23 09:28:48,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21744 to 21614. [2020-12-23 09:28:48,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21614 states. [2020-12-23 09:28:48,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21614 states to 21614 states and 28291 transitions. [2020-12-23 09:28:48,624 INFO L78 Accepts]: Start accepts. Automaton has 21614 states and 28291 transitions. Word has length 58 [2020-12-23 09:28:48,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:28:48,624 INFO L481 AbstractCegarLoop]: Abstraction has 21614 states and 28291 transitions. [2020-12-23 09:28:48,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:28:48,625 INFO L276 IsEmpty]: Start isEmpty. Operand 21614 states and 28291 transitions. [2020-12-23 09:28:48,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-23 09:28:48,627 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:28:48,627 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2020-12-23 09:28:48,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 09:28:48,628 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:28:48,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:28:48,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1927952390, now seen corresponding path program 1 times [2020-12-23 09:28:48,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:28:48,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28712579] [2020-12-23 09:28:48,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:28:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:28:48,686 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:28:48,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28712579] [2020-12-23 09:28:48,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:28:48,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:28:48,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647708908] [2020-12-23 09:28:48,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:28:48,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:28:48,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:28:48,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:28:48,689 INFO L87 Difference]: Start difference. First operand 21614 states and 28291 transitions. Second operand 4 states. [2020-12-23 09:28:50,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:28:50,974 INFO L93 Difference]: Finished difference Result 57325 states and 74908 transitions. [2020-12-23 09:28:50,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:28:50,974 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-12-23 09:28:50,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:28:51,036 INFO L225 Difference]: With dead ends: 57325 [2020-12-23 09:28:51,037 INFO L226 Difference]: Without dead ends: 35757 [2020-12-23 09:28:51,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 09:28:51,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35757 states. [2020-12-23 09:28:53,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35757 to 31601. [2020-12-23 09:28:53,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31601 states. [2020-12-23 09:28:53,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31601 states to 31601 states and 41064 transitions. [2020-12-23 09:28:53,126 INFO L78 Accepts]: Start accepts. Automaton has 31601 states and 41064 transitions. Word has length 59 [2020-12-23 09:28:53,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:28:53,127 INFO L481 AbstractCegarLoop]: Abstraction has 31601 states and 41064 transitions. [2020-12-23 09:28:53,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:28:53,127 INFO L276 IsEmpty]: Start isEmpty. Operand 31601 states and 41064 transitions. [2020-12-23 09:28:53,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-23 09:28:53,131 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:28:53,131 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] [2020-12-23 09:28:53,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 09:28:53,132 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:28:53,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:28:53,132 INFO L82 PathProgramCache]: Analyzing trace with hash -348509553, now seen corresponding path program 1 times [2020-12-23 09:28:53,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:28:53,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288371111] [2020-12-23 09:28:53,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:28:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:28:53,207 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 09:28:53,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288371111] [2020-12-23 09:28:53,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:28:53,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 09:28:53,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583749206] [2020-12-23 09:28:53,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:28:53,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:28:53,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:28:53,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:28:53,209 INFO L87 Difference]: Start difference. First operand 31601 states and 41064 transitions. Second operand 6 states. [2020-12-23 09:28:57,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:28:57,608 INFO L93 Difference]: Finished difference Result 98909 states and 129770 transitions. [2020-12-23 09:28:57,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 09:28:57,609 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-12-23 09:28:57,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:28:57,703 INFO L225 Difference]: With dead ends: 98909 [2020-12-23 09:28:57,703 INFO L226 Difference]: Without dead ends: 74877 [2020-12-23 09:28:57,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 09:28:57,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74877 states. [2020-12-23 09:29:00,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74877 to 43651. [2020-12-23 09:29:00,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43651 states. [2020-12-23 09:29:01,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43651 states to 43651 states and 56948 transitions. [2020-12-23 09:29:01,002 INFO L78 Accepts]: Start accepts. Automaton has 43651 states and 56948 transitions. Word has length 61 [2020-12-23 09:29:01,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:29:01,002 INFO L481 AbstractCegarLoop]: Abstraction has 43651 states and 56948 transitions. [2020-12-23 09:29:01,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:29:01,003 INFO L276 IsEmpty]: Start isEmpty. Operand 43651 states and 56948 transitions. [2020-12-23 09:29:01,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-23 09:29:01,007 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:29:01,008 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2020-12-23 09:29:01,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 09:29:01,008 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:29:01,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:29:01,009 INFO L82 PathProgramCache]: Analyzing trace with hash 807662601, now seen corresponding path program 1 times [2020-12-23 09:29:01,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:29:01,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553836007] [2020-12-23 09:29:01,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:29:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:29:01,037 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:29:01,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553836007] [2020-12-23 09:29:01,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:29:01,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:29:01,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168674639] [2020-12-23 09:29:01,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:29:01,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:29:01,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:29:01,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:29:01,039 INFO L87 Difference]: Start difference. First operand 43651 states and 56948 transitions. Second operand 3 states. [2020-12-23 09:29:03,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:29:03,786 INFO L93 Difference]: Finished difference Result 82740 states and 108197 transitions. [2020-12-23 09:29:03,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:29:03,786 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-23 09:29:03,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:29:03,831 INFO L225 Difference]: With dead ends: 82740 [2020-12-23 09:29:03,832 INFO L226 Difference]: Without dead ends: 43655 [2020-12-23 09:29:03,851 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 09:29:03,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43655 states. [2020-12-23 09:29:06,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43655 to 43651. [2020-12-23 09:29:06,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43651 states. [2020-12-23 09:29:06,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43651 states to 43651 states and 56591 transitions. [2020-12-23 09:29:06,359 INFO L78 Accepts]: Start accepts. Automaton has 43651 states and 56591 transitions. Word has length 65 [2020-12-23 09:29:06,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:29:06,359 INFO L481 AbstractCegarLoop]: Abstraction has 43651 states and 56591 transitions. [2020-12-23 09:29:06,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:29:06,359 INFO L276 IsEmpty]: Start isEmpty. Operand 43651 states and 56591 transitions. [2020-12-23 09:29:06,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-23 09:29:06,364 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:29:06,364 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2020-12-23 09:29:06,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 09:29:06,365 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:29:06,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:29:06,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1009486535, now seen corresponding path program 1 times [2020-12-23 09:29:06,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:29:06,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911367663] [2020-12-23 09:29:06,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:29:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:29:06,385 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-23 09:29:06,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911367663] [2020-12-23 09:29:06,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:29:06,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:29:06,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902872637] [2020-12-23 09:29:06,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:29:06,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:29:06,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:29:06,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:29:06,389 INFO L87 Difference]: Start difference. First operand 43651 states and 56591 transitions. Second operand 3 states. [2020-12-23 09:29:08,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:29:08,924 INFO L93 Difference]: Finished difference Result 46535 states and 60111 transitions. [2020-12-23 09:29:08,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:29:08,925 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-23 09:29:08,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:29:08,963 INFO L225 Difference]: With dead ends: 46535 [2020-12-23 09:29:08,963 INFO L226 Difference]: Without dead ends: 43613 [2020-12-23 09:29:08,971 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 09:29:08,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43613 states. [2020-12-23 09:29:11,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43613 to 43613. [2020-12-23 09:29:11,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43613 states. [2020-12-23 09:29:11,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43613 states to 43613 states and 56551 transitions. [2020-12-23 09:29:11,434 INFO L78 Accepts]: Start accepts. Automaton has 43613 states and 56551 transitions. Word has length 65 [2020-12-23 09:29:11,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:29:11,434 INFO L481 AbstractCegarLoop]: Abstraction has 43613 states and 56551 transitions. [2020-12-23 09:29:11,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:29:11,434 INFO L276 IsEmpty]: Start isEmpty. Operand 43613 states and 56551 transitions. [2020-12-23 09:29:11,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-23 09:29:11,439 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:29:11,440 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2020-12-23 09:29:11,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 09:29:11,440 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:29:11,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:29:11,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1172878516, now seen corresponding path program 1 times [2020-12-23 09:29:11,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:29:11,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198318952] [2020-12-23 09:29:11,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:29:11,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:29:11,488 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:29:11,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198318952] [2020-12-23 09:29:11,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:29:11,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:29:11,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116667566] [2020-12-23 09:29:11,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:29:11,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:29:11,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:29:11,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:29:11,496 INFO L87 Difference]: Start difference. First operand 43613 states and 56551 transitions. Second operand 4 states. [2020-12-23 09:29:14,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:29:14,267 INFO L93 Difference]: Finished difference Result 87652 states and 113597 transitions. [2020-12-23 09:29:14,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:29:14,268 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-12-23 09:29:14,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:29:14,315 INFO L225 Difference]: With dead ends: 87652 [2020-12-23 09:29:14,315 INFO L226 Difference]: Without dead ends: 44085 [2020-12-23 09:29:14,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 09:29:14,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44085 states. [2020-12-23 09:29:16,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44085 to 43613. [2020-12-23 09:29:16,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43613 states. [2020-12-23 09:29:17,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43613 states to 43613 states and 55711 transitions. [2020-12-23 09:29:17,182 INFO L78 Accepts]: Start accepts. Automaton has 43613 states and 55711 transitions. Word has length 66 [2020-12-23 09:29:17,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:29:17,183 INFO L481 AbstractCegarLoop]: Abstraction has 43613 states and 55711 transitions. [2020-12-23 09:29:17,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:29:17,183 INFO L276 IsEmpty]: Start isEmpty. Operand 43613 states and 55711 transitions. [2020-12-23 09:29:17,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-23 09:29:17,187 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:29:17,187 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2020-12-23 09:29:17,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-23 09:29:17,187 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:29:17,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:29:17,188 INFO L82 PathProgramCache]: Analyzing trace with hash 2075083770, now seen corresponding path program 1 times [2020-12-23 09:29:17,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:29:17,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230456411] [2020-12-23 09:29:17,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:29:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:29:17,221 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:29:17,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230456411] [2020-12-23 09:29:17,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:29:17,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:29:17,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869978115] [2020-12-23 09:29:17,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:29:17,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:29:17,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:29:17,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:29:17,223 INFO L87 Difference]: Start difference. First operand 43613 states and 55711 transitions. Second operand 4 states. [2020-12-23 09:29:20,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:29:20,546 INFO L93 Difference]: Finished difference Result 88332 states and 112741 transitions. [2020-12-23 09:29:20,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:29:20,546 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-12-23 09:29:20,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:29:20,597 INFO L225 Difference]: With dead ends: 88332 [2020-12-23 09:29:20,597 INFO L226 Difference]: Without dead ends: 44380 [2020-12-23 09:29:20,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 09:29:20,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44380 states. [2020-12-23 09:29:23,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44380 to 42903. [2020-12-23 09:29:23,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42903 states. [2020-12-23 09:29:23,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42903 states to 42903 states and 54372 transitions. [2020-12-23 09:29:23,270 INFO L78 Accepts]: Start accepts. Automaton has 42903 states and 54372 transitions. Word has length 68 [2020-12-23 09:29:23,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:29:23,270 INFO L481 AbstractCegarLoop]: Abstraction has 42903 states and 54372 transitions. [2020-12-23 09:29:23,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:29:23,270 INFO L276 IsEmpty]: Start isEmpty. Operand 42903 states and 54372 transitions. [2020-12-23 09:29:23,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-23 09:29:23,272 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:29:23,273 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:29:23,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-23 09:29:23,273 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:29:23,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:29:23,273 INFO L82 PathProgramCache]: Analyzing trace with hash 556975009, now seen corresponding path program 1 times [2020-12-23 09:29:23,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:29:23,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785913836] [2020-12-23 09:29:23,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:29:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:29:23,356 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 09:29:23,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785913836] [2020-12-23 09:29:23,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:29:23,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:29:23,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774233099] [2020-12-23 09:29:23,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:29:23,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:29:23,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:29:23,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:29:23,361 INFO L87 Difference]: Start difference. First operand 42903 states and 54372 transitions. Second operand 5 states. [2020-12-23 09:29:29,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:29:29,703 INFO L93 Difference]: Finished difference Result 130746 states and 166486 transitions. [2020-12-23 09:29:29,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 09:29:29,703 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-12-23 09:29:29,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:29:29,808 INFO L225 Difference]: With dead ends: 130746 [2020-12-23 09:29:29,808 INFO L226 Difference]: Without dead ends: 96122 [2020-12-23 09:29:29,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-23 09:29:29,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96122 states. [2020-12-23 09:29:33,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96122 to 47799. [2020-12-23 09:29:33,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47799 states. [2020-12-23 09:29:33,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47799 states to 47799 states and 60509 transitions. [2020-12-23 09:29:33,352 INFO L78 Accepts]: Start accepts. Automaton has 47799 states and 60509 transitions. Word has length 69 [2020-12-23 09:29:33,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:29:33,353 INFO L481 AbstractCegarLoop]: Abstraction has 47799 states and 60509 transitions. [2020-12-23 09:29:33,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:29:33,353 INFO L276 IsEmpty]: Start isEmpty. Operand 47799 states and 60509 transitions. [2020-12-23 09:29:33,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-23 09:29:33,359 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:29:33,359 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2020-12-23 09:29:33,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-23 09:29:33,359 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:29:33,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:29:33,360 INFO L82 PathProgramCache]: Analyzing trace with hash -636342002, now seen corresponding path program 1 times [2020-12-23 09:29:33,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:29:33,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463099986] [2020-12-23 09:29:33,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:29:33,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:29:33,395 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:29:33,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463099986] [2020-12-23 09:29:33,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:29:33,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:29:33,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439592558] [2020-12-23 09:29:33,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:29:33,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:29:33,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:29:33,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:29:33,397 INFO L87 Difference]: Start difference. First operand 47799 states and 60509 transitions. Second operand 3 states. [2020-12-23 09:29:38,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:29:38,719 INFO L93 Difference]: Finished difference Result 126093 states and 160418 transitions. [2020-12-23 09:29:38,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:29:38,720 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-12-23 09:29:38,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:29:38,812 INFO L225 Difference]: With dead ends: 126093 [2020-12-23 09:29:38,813 INFO L226 Difference]: Without dead ends: 81633 [2020-12-23 09:29:38,844 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 09:29:38,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81633 states. [2020-12-23 09:29:43,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81633 to 73237. [2020-12-23 09:29:43,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73237 states. [2020-12-23 09:29:43,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73237 states to 73237 states and 93375 transitions. [2020-12-23 09:29:43,852 INFO L78 Accepts]: Start accepts. Automaton has 73237 states and 93375 transitions. Word has length 85 [2020-12-23 09:29:43,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:29:43,852 INFO L481 AbstractCegarLoop]: Abstraction has 73237 states and 93375 transitions. [2020-12-23 09:29:43,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:29:43,852 INFO L276 IsEmpty]: Start isEmpty. Operand 73237 states and 93375 transitions. [2020-12-23 09:29:43,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-23 09:29:43,868 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:29:43,869 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-12-23 09:29:43,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-23 09:29:43,869 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:29:43,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:29:43,869 INFO L82 PathProgramCache]: Analyzing trace with hash 929392569, now seen corresponding path program 1 times [2020-12-23 09:29:43,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:29:43,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002897667] [2020-12-23 09:29:43,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:29:43,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:29:43,922 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-23 09:29:43,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002897667] [2020-12-23 09:29:43,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:29:43,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:29:43,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747476224] [2020-12-23 09:29:43,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:29:43,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:29:43,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:29:43,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:29:43,924 INFO L87 Difference]: Start difference. First operand 73237 states and 93375 transitions. Second operand 5 states. [2020-12-23 09:29:54,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:29:54,298 INFO L93 Difference]: Finished difference Result 228402 states and 289207 transitions. [2020-12-23 09:29:54,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:29:54,300 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-12-23 09:29:54,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:29:54,652 INFO L225 Difference]: With dead ends: 228402 [2020-12-23 09:29:54,652 INFO L226 Difference]: Without dead ends: 155211 [2020-12-23 09:29:54,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:29:54,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155211 states. [2020-12-23 09:30:03,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155211 to 130982. [2020-12-23 09:30:03,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130982 states. [2020-12-23 09:30:03,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130982 states to 130982 states and 162011 transitions. [2020-12-23 09:30:03,986 INFO L78 Accepts]: Start accepts. Automaton has 130982 states and 162011 transitions. Word has length 98 [2020-12-23 09:30:03,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:30:03,986 INFO L481 AbstractCegarLoop]: Abstraction has 130982 states and 162011 transitions. [2020-12-23 09:30:03,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:30:03,986 INFO L276 IsEmpty]: Start isEmpty. Operand 130982 states and 162011 transitions. [2020-12-23 09:30:04,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-23 09:30:04,005 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:30:04,005 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 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] [2020-12-23 09:30:04,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-23 09:30:04,005 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:30:04,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:30:04,006 INFO L82 PathProgramCache]: Analyzing trace with hash -424178660, now seen corresponding path program 1 times [2020-12-23 09:30:04,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:30:04,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157276408] [2020-12-23 09:30:04,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:30:04,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:30:04,045 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 09:30:04,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157276408] [2020-12-23 09:30:04,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:30:04,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:30:04,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580110737] [2020-12-23 09:30:04,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:30:04,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:30:04,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:30:04,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:30:04,047 INFO L87 Difference]: Start difference. First operand 130982 states and 162011 transitions. Second operand 5 states. [2020-12-23 09:30:10,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:30:10,017 INFO L93 Difference]: Finished difference Result 203946 states and 253728 transitions. [2020-12-23 09:30:10,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 09:30:10,018 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-12-23 09:30:10,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:30:10,106 INFO L225 Difference]: With dead ends: 203946 [2020-12-23 09:30:10,106 INFO L226 Difference]: Without dead ends: 73010 [2020-12-23 09:30:10,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 09:30:10,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73010 states. [2020-12-23 09:30:14,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73010 to 64376. [2020-12-23 09:30:14,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64376 states. [2020-12-23 09:30:15,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64376 states to 64376 states and 80869 transitions. [2020-12-23 09:30:15,002 INFO L78 Accepts]: Start accepts. Automaton has 64376 states and 80869 transitions. Word has length 100 [2020-12-23 09:30:15,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:30:15,002 INFO L481 AbstractCegarLoop]: Abstraction has 64376 states and 80869 transitions. [2020-12-23 09:30:15,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:30:15,002 INFO L276 IsEmpty]: Start isEmpty. Operand 64376 states and 80869 transitions. [2020-12-23 09:30:15,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-23 09:30:15,010 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:30:15,010 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-12-23 09:30:15,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-23 09:30:15,010 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:30:15,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:30:15,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1632792131, now seen corresponding path program 1 times [2020-12-23 09:30:15,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:30:15,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919769237] [2020-12-23 09:30:15,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:30:15,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:30:15,035 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-12-23 09:30:15,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919769237] [2020-12-23 09:30:15,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:30:15,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:30:15,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830657403] [2020-12-23 09:30:15,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:30:15,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:30:15,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:30:15,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:30:15,037 INFO L87 Difference]: Start difference. First operand 64376 states and 80869 transitions. Second operand 3 states.