/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/openssl-simplified/s3_clnt_2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 01:41:08,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 01:41:08,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 01:41:08,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 01:41:08,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 01:41:08,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 01:41:08,808 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 01:41:08,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 01:41:08,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 01:41:08,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 01:41:08,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 01:41:08,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 01:41:08,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 01:41:08,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 01:41:08,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 01:41:08,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 01:41:08,824 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 01:41:08,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 01:41:08,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 01:41:08,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 01:41:08,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 01:41:08,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 01:41:08,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 01:41:08,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 01:41:08,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 01:41:08,853 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 01:41:08,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 01:41:08,855 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 01:41:08,856 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 01:41:08,857 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 01:41:08,857 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 01:41:08,858 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 01:41:08,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 01:41:08,860 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 01:41:08,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 01:41:08,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 01:41:08,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 01:41:08,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 01:41:08,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 01:41:08,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 01:41:08,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 01:41:08,868 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 01:41:08,910 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 01:41:08,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 01:41:08,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 01:41:08,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 01:41:08,913 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 01:41:08,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 01:41:08,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 01:41:08,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 01:41:08,914 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 01:41:08,914 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 01:41:08,914 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 01:41:08,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 01:41:08,915 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 01:41:08,915 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 01:41:08,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 01:41:08,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 01:41:08,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 01:41:08,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 01:41:08,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 01:41:08,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 01:41:08,917 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 01:41:08,917 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 01:41:08,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 01:41:08,917 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 01:41:08,917 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 01:41:08,918 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 01:41:09,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 01:41:09,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 01:41:09,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 01:41:09,358 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 01:41:09,359 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 01:41:09,360 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl-simplified/s3_clnt_2.cil-2.c [2020-12-23 01:41:09,461 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c03a3595e/53bcfa10782646b389634633620f6060/FLAGe786c893b [2020-12-23 01:41:10,251 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 01:41:10,251 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/openssl-simplified/s3_clnt_2.cil-2.c [2020-12-23 01:41:10,271 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c03a3595e/53bcfa10782646b389634633620f6060/FLAGe786c893b [2020-12-23 01:41:10,562 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c03a3595e/53bcfa10782646b389634633620f6060 [2020-12-23 01:41:10,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 01:41:10,567 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 01:41:10,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 01:41:10,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 01:41:10,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 01:41:10,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:41:10" (1/1) ... [2020-12-23 01:41:10,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d54fa48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:10, skipping insertion in model container [2020-12-23 01:41:10,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:41:10" (1/1) ... [2020-12-23 01:41:10,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 01:41:10,654 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~blastFlag~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~cb~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~skip~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~cb~0,] left hand side expression in assignment: lhs: VariableLHS[~cb~0,] left hand side expression in assignment: lhs: VariableLHS[~state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__new_session~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__server~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp55~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~s__type~0,] left hand side expression in assignment: lhs: VariableLHS[~buf~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~s__init_buf___0~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__init_num~0,] left hand side expression in assignment: lhs: VariableLHS[~s__shutdown~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~blastFlag~0,] left hand side expression in assignment: lhs: VariableLHS[~blastFlag~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__init_num~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~blastFlag~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__init_num~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp56~0,] left hand side expression in assignment: lhs: VariableLHS[~skip~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~blastFlag~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__init_num~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~blastFlag~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__init_num~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__init_num~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__init_num~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__init_num~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~l~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__s3__change_cipher_spec~0,] left hand side expression in assignment: lhs: VariableLHS[~s__init_num~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__init_num~0,] left hand side expression in assignment: lhs: VariableLHS[~s__s3__change_cipher_spec~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__init_num~0,] left hand side expression in assignment: lhs: VariableLHS[~s__session__cipher~0,] left hand side expression in assignment: lhs: VariableLHS[~s__session__compress_meth~0,] left hand side expression in assignment: lhs: VariableLHS[~s__session__compress_meth~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp57~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp58~0,] left hand side expression in assignment: lhs: VariableLHS[~s__s3__flags~0,] left hand side expression in assignment: lhs: VariableLHS[~s__s3__tmp__next_state___0~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp59~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp60~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp61~0,] left hand side expression in assignment: lhs: VariableLHS[~s__s3__flags~0,] left hand side expression in assignment: lhs: VariableLHS[~s__s3__delay_buf_pop_ret~0,] left hand side expression in assignment: lhs: VariableLHS[~s__s3__tmp__next_state___0~0,] left hand side expression in assignment: lhs: VariableLHS[~s__init_num~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__init_num~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp62~0,] left hand side expression in assignment: lhs: VariableLHS[~s__rwstate~0,] left hand side expression in assignment: lhs: VariableLHS[~num1~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp63~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~s__rwstate~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__init_buf___0~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp64~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp65~0,] left hand side expression in assignment: lhs: VariableLHS[~s__init_num~0,] left hand side expression in assignment: lhs: VariableLHS[~s__new_session~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~new_state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~skip~0,] [2020-12-23 01:41:10,890 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/openssl-simplified/s3_clnt_2.cil-2.c[35349,35362] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2020-12-23 01:41:10,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:41:10,910 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~blastFlag~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~cb~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~skip~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~cb~0,] left hand side expression in assignment: lhs: VariableLHS[~cb~0,] left hand side expression in assignment: lhs: VariableLHS[~state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__new_session~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__server~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp55~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~s__type~0,] left hand side expression in assignment: lhs: VariableLHS[~buf~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~s__init_buf___0~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__init_num~0,] left hand side expression in assignment: lhs: VariableLHS[~s__shutdown~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~blastFlag~0,] left hand side expression in assignment: lhs: VariableLHS[~blastFlag~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__init_num~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~blastFlag~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__init_num~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp56~0,] left hand side expression in assignment: lhs: VariableLHS[~skip~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~blastFlag~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__init_num~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~blastFlag~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__init_num~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__init_num~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__init_num~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__init_num~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~l~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__s3__change_cipher_spec~0,] left hand side expression in assignment: lhs: VariableLHS[~s__init_num~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__init_num~0,] left hand side expression in assignment: lhs: VariableLHS[~s__s3__change_cipher_spec~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__init_num~0,] left hand side expression in assignment: lhs: VariableLHS[~s__session__cipher~0,] left hand side expression in assignment: lhs: VariableLHS[~s__session__compress_meth~0,] left hand side expression in assignment: lhs: VariableLHS[~s__session__compress_meth~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp57~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp58~0,] left hand side expression in assignment: lhs: VariableLHS[~s__s3__flags~0,] left hand side expression in assignment: lhs: VariableLHS[~s__s3__tmp__next_state___0~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp59~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp60~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp61~0,] left hand side expression in assignment: lhs: VariableLHS[~s__s3__flags~0,] left hand side expression in assignment: lhs: VariableLHS[~s__s3__delay_buf_pop_ret~0,] left hand side expression in assignment: lhs: VariableLHS[~s__s3__tmp__next_state___0~0,] left hand side expression in assignment: lhs: VariableLHS[~s__init_num~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__init_num~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp62~0,] left hand side expression in assignment: lhs: VariableLHS[~s__rwstate~0,] left hand side expression in assignment: lhs: VariableLHS[~num1~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp63~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~s__rwstate~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__init_buf___0~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp64~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp65~0,] left hand side expression in assignment: lhs: VariableLHS[~s__init_num~0,] left hand side expression in assignment: lhs: VariableLHS[~s__new_session~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~ret~0,] left hand side expression in assignment: lhs: VariableLHS[~new_state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~skip~0,] [2020-12-23 01:41:11,008 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/openssl-simplified/s3_clnt_2.cil-2.c[35349,35362] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2020-12-23 01:41:11,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:41:11,030 INFO L208 MainTranslator]: Completed translation [2020-12-23 01:41:11,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:11 WrapperNode [2020-12-23 01:41:11,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 01:41:11,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 01:41:11,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 01:41:11,034 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 01:41:11,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:11" (1/1) ... [2020-12-23 01:41:11,055 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:11" (1/1) ... [2020-12-23 01:41:11,093 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 01:41:11,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 01:41:11,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 01:41:11,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 01:41:11,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:11" (1/1) ... [2020-12-23 01:41:11,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:11" (1/1) ... [2020-12-23 01:41:11,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:11" (1/1) ... [2020-12-23 01:41:11,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:11" (1/1) ... [2020-12-23 01:41:11,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:11" (1/1) ... [2020-12-23 01:41:11,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:11" (1/1) ... [2020-12-23 01:41:11,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:11" (1/1) ... [2020-12-23 01:41:11,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 01:41:11,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 01:41:11,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 01:41:11,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 01:41:11,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:11" (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 01:41:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 01:41:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 01:41:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 01:41:11,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 01:41:11,492 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-23 01:41:12,156 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-12-23 01:41:12,156 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-12-23 01:41:12,167 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 01:41:12,168 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-23 01:41:12,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:41:12 BoogieIcfgContainer [2020-12-23 01:41:12,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 01:41:12,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 01:41:12,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 01:41:12,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 01:41:12,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:41:10" (1/3) ... [2020-12-23 01:41:12,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44fe45ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:41:12, skipping insertion in model container [2020-12-23 01:41:12,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:11" (2/3) ... [2020-12-23 01:41:12,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44fe45ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:41:12, skipping insertion in model container [2020-12-23 01:41:12,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:41:12" (3/3) ... [2020-12-23 01:41:12,180 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_2.cil-2.c [2020-12-23 01:41:12,187 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 01:41:12,193 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 01:41:12,214 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 01:41:12,245 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 01:41:12,245 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 01:41:12,245 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 01:41:12,246 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 01:41:12,246 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 01:41:12,246 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 01:41:12,246 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 01:41:12,246 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 01:41:12,265 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2020-12-23 01:41:12,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-23 01:41:12,273 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:41:12,274 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] [2020-12-23 01:41:12,274 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:41:12,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:41:12,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1457695038, now seen corresponding path program 1 times [2020-12-23 01:41:12,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:41:12,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740344907] [2020-12-23 01:41:12,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:41:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:41:12,522 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 01:41:12,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740344907] [2020-12-23 01:41:12,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:41:12,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:41:12,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116974021] [2020-12-23 01:41:12,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:41:12,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:41:12,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:41:12,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:41:12,550 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 3 states. [2020-12-23 01:41:12,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:41:12,733 INFO L93 Difference]: Finished difference Result 252 states and 427 transitions. [2020-12-23 01:41:12,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:41:12,735 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-23 01:41:12,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:41:12,747 INFO L225 Difference]: With dead ends: 252 [2020-12-23 01:41:12,748 INFO L226 Difference]: Without dead ends: 115 [2020-12-23 01:41:12,752 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 01:41:12,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-23 01:41:12,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-12-23 01:41:12,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-12-23 01:41:12,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 172 transitions. [2020-12-23 01:41:12,808 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 172 transitions. Word has length 24 [2020-12-23 01:41:12,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:41:12,808 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 172 transitions. [2020-12-23 01:41:12,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:41:12,809 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 172 transitions. [2020-12-23 01:41:12,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 01:41:12,810 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:41:12,811 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 01:41:12,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 01:41:12,811 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:41:12,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:41:12,812 INFO L82 PathProgramCache]: Analyzing trace with hash 561717339, now seen corresponding path program 1 times [2020-12-23 01:41:12,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:41:12,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107796706] [2020-12-23 01:41:12,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:41:12,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:41:12,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:41:12,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107796706] [2020-12-23 01:41:12,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:41:12,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:41:12,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888260270] [2020-12-23 01:41:12,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:41:12,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:41:12,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:41:12,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:41:12,974 INFO L87 Difference]: Start difference. First operand 115 states and 172 transitions. Second operand 3 states. [2020-12-23 01:41:13,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:41:13,107 INFO L93 Difference]: Finished difference Result 239 states and 362 transitions. [2020-12-23 01:41:13,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:41:13,108 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-12-23 01:41:13,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:41:13,110 INFO L225 Difference]: With dead ends: 239 [2020-12-23 01:41:13,110 INFO L226 Difference]: Without dead ends: 134 [2020-12-23 01:41:13,112 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 01:41:13,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-12-23 01:41:13,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 130. [2020-12-23 01:41:13,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-12-23 01:41:13,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 192 transitions. [2020-12-23 01:41:13,124 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 192 transitions. Word has length 37 [2020-12-23 01:41:13,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:41:13,124 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 192 transitions. [2020-12-23 01:41:13,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:41:13,125 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 192 transitions. [2020-12-23 01:41:13,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-23 01:41:13,126 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:41:13,127 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 01:41:13,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 01:41:13,127 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:41:13,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:41:13,128 INFO L82 PathProgramCache]: Analyzing trace with hash 684962052, now seen corresponding path program 1 times [2020-12-23 01:41:13,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:41:13,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985216129] [2020-12-23 01:41:13,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:41:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:41:13,208 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 01:41:13,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985216129] [2020-12-23 01:41:13,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:41:13,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:41:13,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826888482] [2020-12-23 01:41:13,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:41:13,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:41:13,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:41:13,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:41:13,212 INFO L87 Difference]: Start difference. First operand 130 states and 192 transitions. Second operand 3 states. [2020-12-23 01:41:13,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:41:13,330 INFO L93 Difference]: Finished difference Result 271 states and 406 transitions. [2020-12-23 01:41:13,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:41:13,330 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-12-23 01:41:13,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:41:13,332 INFO L225 Difference]: With dead ends: 271 [2020-12-23 01:41:13,332 INFO L226 Difference]: Without dead ends: 151 [2020-12-23 01:41:13,334 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 01:41:13,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-12-23 01:41:13,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 147. [2020-12-23 01:41:13,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-12-23 01:41:13,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 214 transitions. [2020-12-23 01:41:13,344 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 214 transitions. Word has length 51 [2020-12-23 01:41:13,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:41:13,345 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 214 transitions. [2020-12-23 01:41:13,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:41:13,345 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 214 transitions. [2020-12-23 01:41:13,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-23 01:41:13,347 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:41:13,347 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 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 01:41:13,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 01:41:13,348 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:41:13,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:41:13,349 INFO L82 PathProgramCache]: Analyzing trace with hash -184561774, now seen corresponding path program 1 times [2020-12-23 01:41:13,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:41:13,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367413148] [2020-12-23 01:41:13,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:41:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:41:13,441 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-23 01:41:13,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367413148] [2020-12-23 01:41:13,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:41:13,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:41:13,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420841878] [2020-12-23 01:41:13,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:41:13,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:41:13,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:41:13,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:41:13,447 INFO L87 Difference]: Start difference. First operand 147 states and 214 transitions. Second operand 3 states. [2020-12-23 01:41:13,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:41:13,652 INFO L93 Difference]: Finished difference Result 335 states and 503 transitions. [2020-12-23 01:41:13,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:41:13,652 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-12-23 01:41:13,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:41:13,654 INFO L225 Difference]: With dead ends: 335 [2020-12-23 01:41:13,655 INFO L226 Difference]: Without dead ends: 197 [2020-12-23 01:41:13,656 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 01:41:13,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-12-23 01:41:13,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 188. [2020-12-23 01:41:13,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-12-23 01:41:13,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 264 transitions. [2020-12-23 01:41:13,668 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 264 transitions. Word has length 68 [2020-12-23 01:41:13,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:41:13,669 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 264 transitions. [2020-12-23 01:41:13,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:41:13,669 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 264 transitions. [2020-12-23 01:41:13,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-23 01:41:13,672 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:41:13,672 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 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 01:41:13,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 01:41:13,673 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:41:13,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:41:13,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1990000108, now seen corresponding path program 1 times [2020-12-23 01:41:13,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:41:13,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595215380] [2020-12-23 01:41:13,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:41:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:41:13,758 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-23 01:41:13,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595215380] [2020-12-23 01:41:13,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:41:13,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:41:13,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487392709] [2020-12-23 01:41:13,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:41:13,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:41:13,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:41:13,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:41:13,761 INFO L87 Difference]: Start difference. First operand 188 states and 264 transitions. Second operand 3 states. [2020-12-23 01:41:13,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:41:13,880 INFO L93 Difference]: Finished difference Result 390 states and 555 transitions. [2020-12-23 01:41:13,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:41:13,880 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-12-23 01:41:13,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:41:13,882 INFO L225 Difference]: With dead ends: 390 [2020-12-23 01:41:13,882 INFO L226 Difference]: Without dead ends: 212 [2020-12-23 01:41:13,883 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 01:41:13,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-12-23 01:41:13,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 207. [2020-12-23 01:41:13,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-12-23 01:41:13,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 288 transitions. [2020-12-23 01:41:13,892 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 288 transitions. Word has length 68 [2020-12-23 01:41:13,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:41:13,893 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 288 transitions. [2020-12-23 01:41:13,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:41:13,893 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 288 transitions. [2020-12-23 01:41:13,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-23 01:41:13,895 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:41:13,895 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-12-23 01:41:13,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 01:41:13,896 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:41:13,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:41:13,897 INFO L82 PathProgramCache]: Analyzing trace with hash -843012112, now seen corresponding path program 1 times [2020-12-23 01:41:13,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:41:13,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922663661] [2020-12-23 01:41:13,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:41:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:41:13,966 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-12-23 01:41:13,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922663661] [2020-12-23 01:41:13,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:41:13,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:41:13,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003765719] [2020-12-23 01:41:13,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:41:13,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:41:13,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:41:13,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:41:13,969 INFO L87 Difference]: Start difference. First operand 207 states and 288 transitions. Second operand 3 states. [2020-12-23 01:41:14,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:41:14,091 INFO L93 Difference]: Finished difference Result 428 states and 604 transitions. [2020-12-23 01:41:14,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:41:14,091 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-12-23 01:41:14,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:41:14,093 INFO L225 Difference]: With dead ends: 428 [2020-12-23 01:41:14,094 INFO L226 Difference]: Without dead ends: 231 [2020-12-23 01:41:14,094 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 01:41:14,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-12-23 01:41:14,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 228. [2020-12-23 01:41:14,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-12-23 01:41:14,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 314 transitions. [2020-12-23 01:41:14,118 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 314 transitions. Word has length 85 [2020-12-23 01:41:14,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:41:14,118 INFO L481 AbstractCegarLoop]: Abstraction has 228 states and 314 transitions. [2020-12-23 01:41:14,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:41:14,119 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 314 transitions. [2020-12-23 01:41:14,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 01:41:14,120 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:41:14,121 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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 01:41:14,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 01:41:14,121 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:41:14,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:41:14,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1725839848, now seen corresponding path program 1 times [2020-12-23 01:41:14,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:41:14,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666461678] [2020-12-23 01:41:14,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:41:14,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:41:14,213 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-12-23 01:41:14,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666461678] [2020-12-23 01:41:14,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:41:14,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:41:14,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547575070] [2020-12-23 01:41:14,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:41:14,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:41:14,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:41:14,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:41:14,222 INFO L87 Difference]: Start difference. First operand 228 states and 314 transitions. Second operand 3 states. [2020-12-23 01:41:14,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:41:14,266 INFO L93 Difference]: Finished difference Result 661 states and 912 transitions. [2020-12-23 01:41:14,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:41:14,266 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-23 01:41:14,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:41:14,274 INFO L225 Difference]: With dead ends: 661 [2020-12-23 01:41:14,274 INFO L226 Difference]: Without dead ends: 443 [2020-12-23 01:41:14,276 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 01:41:14,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2020-12-23 01:41:14,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2020-12-23 01:41:14,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-12-23 01:41:14,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 606 transitions. [2020-12-23 01:41:14,294 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 606 transitions. Word has length 105 [2020-12-23 01:41:14,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:41:14,295 INFO L481 AbstractCegarLoop]: Abstraction has 443 states and 606 transitions. [2020-12-23 01:41:14,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:41:14,296 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 606 transitions. [2020-12-23 01:41:14,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 01:41:14,304 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:41:14,304 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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 01:41:14,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 01:41:14,305 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:41:14,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:41:14,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1889855194, now seen corresponding path program 1 times [2020-12-23 01:41:14,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:41:14,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184314034] [2020-12-23 01:41:14,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:41:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:41:14,397 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-12-23 01:41:14,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184314034] [2020-12-23 01:41:14,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:41:14,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:41:14,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446407754] [2020-12-23 01:41:14,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:41:14,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:41:14,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:41:14,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:41:14,399 INFO L87 Difference]: Start difference. First operand 443 states and 606 transitions. Second operand 3 states. [2020-12-23 01:41:14,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:41:14,424 INFO L93 Difference]: Finished difference Result 897 states and 1226 transitions. [2020-12-23 01:41:14,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:41:14,425 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-23 01:41:14,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:41:14,428 INFO L225 Difference]: With dead ends: 897 [2020-12-23 01:41:14,428 INFO L226 Difference]: Without dead ends: 464 [2020-12-23 01:41:14,429 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 01:41:14,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-12-23 01:41:14,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2020-12-23 01:41:14,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-12-23 01:41:14,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 633 transitions. [2020-12-23 01:41:14,441 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 633 transitions. Word has length 105 [2020-12-23 01:41:14,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:41:14,441 INFO L481 AbstractCegarLoop]: Abstraction has 464 states and 633 transitions. [2020-12-23 01:41:14,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:41:14,442 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 633 transitions. [2020-12-23 01:41:14,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-23 01:41:14,443 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:41:14,443 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2020-12-23 01:41:14,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 01:41:14,444 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:41:14,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:41:14,444 INFO L82 PathProgramCache]: Analyzing trace with hash -810746188, now seen corresponding path program 1 times [2020-12-23 01:41:14,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:41:14,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366119710] [2020-12-23 01:41:14,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:41:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:41:14,492 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-12-23 01:41:14,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366119710] [2020-12-23 01:41:14,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:41:14,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:41:14,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092398037] [2020-12-23 01:41:14,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:41:14,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:41:14,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:41:14,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:41:14,494 INFO L87 Difference]: Start difference. First operand 464 states and 633 transitions. Second operand 3 states. [2020-12-23 01:41:14,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:41:14,519 INFO L93 Difference]: Finished difference Result 945 states and 1287 transitions. [2020-12-23 01:41:14,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:41:14,519 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-23 01:41:14,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:41:14,522 INFO L225 Difference]: With dead ends: 945 [2020-12-23 01:41:14,522 INFO L226 Difference]: Without dead ends: 491 [2020-12-23 01:41:14,523 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 01:41:14,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2020-12-23 01:41:14,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 491. [2020-12-23 01:41:14,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-12-23 01:41:14,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 667 transitions. [2020-12-23 01:41:14,538 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 667 transitions. Word has length 106 [2020-12-23 01:41:14,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:41:14,539 INFO L481 AbstractCegarLoop]: Abstraction has 491 states and 667 transitions. [2020-12-23 01:41:14,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:41:14,539 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 667 transitions. [2020-12-23 01:41:14,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-23 01:41:14,540 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:41:14,541 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2020-12-23 01:41:14,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 01:41:14,541 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:41:14,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:41:14,542 INFO L82 PathProgramCache]: Analyzing trace with hash 625791090, now seen corresponding path program 1 times [2020-12-23 01:41:14,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:41:14,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699497420] [2020-12-23 01:41:14,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:41:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:41:14,610 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-12-23 01:41:14,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699497420] [2020-12-23 01:41:14,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:41:14,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:41:14,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483775993] [2020-12-23 01:41:14,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:41:14,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:41:14,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:41:14,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:41:14,613 INFO L87 Difference]: Start difference. First operand 491 states and 667 transitions. Second operand 3 states. [2020-12-23 01:41:14,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:41:14,653 INFO L93 Difference]: Finished difference Result 709 states and 967 transitions. [2020-12-23 01:41:14,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:41:14,653 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-23 01:41:14,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:41:14,657 INFO L225 Difference]: With dead ends: 709 [2020-12-23 01:41:14,658 INFO L226 Difference]: Without dead ends: 707 [2020-12-23 01:41:14,658 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 01:41:14,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-12-23 01:41:14,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 707. [2020-12-23 01:41:14,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 707 states. [2020-12-23 01:41:14,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 965 transitions. [2020-12-23 01:41:14,676 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 965 transitions. Word has length 107 [2020-12-23 01:41:14,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:41:14,676 INFO L481 AbstractCegarLoop]: Abstraction has 707 states and 965 transitions. [2020-12-23 01:41:14,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:41:14,676 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 965 transitions. [2020-12-23 01:41:14,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-12-23 01:41:14,679 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:41:14,680 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 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] [2020-12-23 01:41:14,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 01:41:14,680 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:41:14,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:41:14,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1290635395, now seen corresponding path program 1 times [2020-12-23 01:41:14,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:41:14,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443910650] [2020-12-23 01:41:14,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:41:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:41:14,760 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 311 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2020-12-23 01:41:14,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443910650] [2020-12-23 01:41:14,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:41:14,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:41:14,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580956554] [2020-12-23 01:41:14,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:41:14,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:41:14,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:41:14,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:41:14,763 INFO L87 Difference]: Start difference. First operand 707 states and 965 transitions. Second operand 3 states. [2020-12-23 01:41:14,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:41:15,000 INFO L93 Difference]: Finished difference Result 1530 states and 2149 transitions. [2020-12-23 01:41:15,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:41:15,000 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 176 [2020-12-23 01:41:15,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:41:15,007 INFO L225 Difference]: With dead ends: 1530 [2020-12-23 01:41:15,008 INFO L226 Difference]: Without dead ends: 857 [2020-12-23 01:41:15,009 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 01:41:15,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2020-12-23 01:41:15,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 824. [2020-12-23 01:41:15,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 824 states. [2020-12-23 01:41:15,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1154 transitions. [2020-12-23 01:41:15,038 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1154 transitions. Word has length 176 [2020-12-23 01:41:15,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:41:15,039 INFO L481 AbstractCegarLoop]: Abstraction has 824 states and 1154 transitions. [2020-12-23 01:41:15,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:41:15,039 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1154 transitions. [2020-12-23 01:41:15,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-12-23 01:41:15,046 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:41:15,046 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 9, 9, 9, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-23 01:41:15,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 01:41:15,047 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:41:15,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:41:15,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1154586908, now seen corresponding path program 2 times [2020-12-23 01:41:15,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:41:15,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39712986] [2020-12-23 01:41:15,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:41:15,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:41:15,219 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 327 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2020-12-23 01:41:15,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39712986] [2020-12-23 01:41:15,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:41:15,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:41:15,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880791456] [2020-12-23 01:41:15,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:41:15,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:41:15,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:41:15,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:41:15,227 INFO L87 Difference]: Start difference. First operand 824 states and 1154 transitions. Second operand 3 states. [2020-12-23 01:41:15,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:41:15,495 INFO L93 Difference]: Finished difference Result 1892 states and 2730 transitions. [2020-12-23 01:41:15,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:41:15,496 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 189 [2020-12-23 01:41:15,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:41:15,502 INFO L225 Difference]: With dead ends: 1892 [2020-12-23 01:41:15,503 INFO L226 Difference]: Without dead ends: 1054 [2020-12-23 01:41:15,505 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 01:41:15,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2020-12-23 01:41:15,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 1013. [2020-12-23 01:41:15,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1013 states. [2020-12-23 01:41:15,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1406 transitions. [2020-12-23 01:41:15,566 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1406 transitions. Word has length 189 [2020-12-23 01:41:15,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:41:15,567 INFO L481 AbstractCegarLoop]: Abstraction has 1013 states and 1406 transitions. [2020-12-23 01:41:15,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:41:15,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1406 transitions. [2020-12-23 01:41:15,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-12-23 01:41:15,572 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:41:15,572 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-23 01:41:15,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 01:41:15,572 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:41:15,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:41:15,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1143144718, now seen corresponding path program 1 times [2020-12-23 01:41:15,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:41:15,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155268258] [2020-12-23 01:41:15,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:41:15,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:41:15,684 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 404 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2020-12-23 01:41:15,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155268258] [2020-12-23 01:41:15,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:41:15,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:41:15,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744335497] [2020-12-23 01:41:15,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:41:15,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:41:15,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:41:15,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:41:15,688 INFO L87 Difference]: Start difference. First operand 1013 states and 1406 transitions. Second operand 3 states. [2020-12-23 01:41:15,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:41:15,885 INFO L93 Difference]: Finished difference Result 2148 states and 3007 transitions. [2020-12-23 01:41:15,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:41:15,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 210 [2020-12-23 01:41:15,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:41:15,892 INFO L225 Difference]: With dead ends: 2148 [2020-12-23 01:41:15,892 INFO L226 Difference]: Without dead ends: 1127 [2020-12-23 01:41:15,894 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 01:41:15,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2020-12-23 01:41:15,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1088. [2020-12-23 01:41:15,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1088 states. [2020-12-23 01:41:15,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 1502 transitions. [2020-12-23 01:41:15,921 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 1502 transitions. Word has length 210 [2020-12-23 01:41:15,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:41:15,922 INFO L481 AbstractCegarLoop]: Abstraction has 1088 states and 1502 transitions. [2020-12-23 01:41:15,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:41:15,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 1502 transitions. [2020-12-23 01:41:15,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-12-23 01:41:15,926 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:41:15,927 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 11, 11, 11, 11, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-23 01:41:15,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 01:41:15,927 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:41:15,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:41:15,928 INFO L82 PathProgramCache]: Analyzing trace with hash 455987487, now seen corresponding path program 1 times [2020-12-23 01:41:15,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:41:15,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745126903] [2020-12-23 01:41:15,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:41:15,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:41:16,044 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 479 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2020-12-23 01:41:16,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745126903] [2020-12-23 01:41:16,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:41:16,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:41:16,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193650338] [2020-12-23 01:41:16,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:41:16,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:41:16,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:41:16,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:41:16,046 INFO L87 Difference]: Start difference. First operand 1088 states and 1502 transitions. Second operand 3 states. [2020-12-23 01:41:16,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:41:16,301 INFO L93 Difference]: Finished difference Result 2298 states and 3196 transitions. [2020-12-23 01:41:16,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:41:16,302 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 234 [2020-12-23 01:41:16,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:41:16,311 INFO L225 Difference]: With dead ends: 2298 [2020-12-23 01:41:16,312 INFO L226 Difference]: Without dead ends: 1208 [2020-12-23 01:41:16,314 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 01:41:16,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2020-12-23 01:41:16,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 1172. [2020-12-23 01:41:16,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1172 states. [2020-12-23 01:41:16,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1613 transitions. [2020-12-23 01:41:16,355 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1613 transitions. Word has length 234 [2020-12-23 01:41:16,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:41:16,356 INFO L481 AbstractCegarLoop]: Abstraction has 1172 states and 1613 transitions. [2020-12-23 01:41:16,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:41:16,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1613 transitions. [2020-12-23 01:41:16,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-12-23 01:41:16,365 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:41:16,366 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 11, 11, 11, 11, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-23 01:41:16,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 01:41:16,366 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:41:16,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:41:16,367 INFO L82 PathProgramCache]: Analyzing trace with hash 574428961, now seen corresponding path program 1 times [2020-12-23 01:41:16,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:41:16,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360254464] [2020-12-23 01:41:16,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:41:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:41:16,520 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 479 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2020-12-23 01:41:16,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360254464] [2020-12-23 01:41:16,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:41:16,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:41:16,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058818548] [2020-12-23 01:41:16,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:41:16,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:41:16,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:41:16,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:41:16,523 INFO L87 Difference]: Start difference. First operand 1172 states and 1613 transitions. Second operand 3 states. [2020-12-23 01:41:16,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:41:16,727 INFO L93 Difference]: Finished difference Result 2466 states and 3421 transitions. [2020-12-23 01:41:16,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:41:16,727 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 234 [2020-12-23 01:41:16,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:41:16,735 INFO L225 Difference]: With dead ends: 2466 [2020-12-23 01:41:16,735 INFO L226 Difference]: Without dead ends: 1304 [2020-12-23 01:41:16,737 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 01:41:16,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2020-12-23 01:41:16,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1265. [2020-12-23 01:41:16,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1265 states. [2020-12-23 01:41:16,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1745 transitions. [2020-12-23 01:41:16,772 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 1745 transitions. Word has length 234 [2020-12-23 01:41:16,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:41:16,773 INFO L481 AbstractCegarLoop]: Abstraction has 1265 states and 1745 transitions. [2020-12-23 01:41:16,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:41:16,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 1745 transitions. [2020-12-23 01:41:16,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-12-23 01:41:16,778 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:41:16,779 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 12, 12, 12, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-23 01:41:16,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 01:41:16,779 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:41:16,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:41:16,780 INFO L82 PathProgramCache]: Analyzing trace with hash 172133823, now seen corresponding path program 1 times [2020-12-23 01:41:16,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:41:16,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784018179] [2020-12-23 01:41:16,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:41:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:41:16,925 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 622 proven. 0 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2020-12-23 01:41:16,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784018179] [2020-12-23 01:41:16,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:41:16,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:41:16,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867934331] [2020-12-23 01:41:16,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:41:16,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:41:16,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:41:16,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:41:16,927 INFO L87 Difference]: Start difference. First operand 1265 states and 1745 transitions. Second operand 3 states. [2020-12-23 01:41:16,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:41:16,979 INFO L93 Difference]: Finished difference Result 3718 states and 5136 transitions. [2020-12-23 01:41:16,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:41:16,980 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 264 [2020-12-23 01:41:16,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:41:16,993 INFO L225 Difference]: With dead ends: 3718 [2020-12-23 01:41:16,993 INFO L226 Difference]: Without dead ends: 2490 [2020-12-23 01:41:16,996 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 01:41:16,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2490 states. [2020-12-23 01:41:17,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2490 to 2488. [2020-12-23 01:41:17,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2488 states. [2020-12-23 01:41:17,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2488 states to 2488 states and 3435 transitions. [2020-12-23 01:41:17,084 INFO L78 Accepts]: Start accepts. Automaton has 2488 states and 3435 transitions. Word has length 264 [2020-12-23 01:41:17,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:41:17,085 INFO L481 AbstractCegarLoop]: Abstraction has 2488 states and 3435 transitions. [2020-12-23 01:41:17,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:41:17,085 INFO L276 IsEmpty]: Start isEmpty. Operand 2488 states and 3435 transitions. [2020-12-23 01:41:17,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-12-23 01:41:17,093 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:41:17,094 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 12, 12, 12, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-23 01:41:17,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 01:41:17,094 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:41:17,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:41:17,095 INFO L82 PathProgramCache]: Analyzing trace with hash 290575297, now seen corresponding path program 1 times [2020-12-23 01:41:17,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:41:17,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269027806] [2020-12-23 01:41:17,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:41:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:41:17,225 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 554 proven. 0 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2020-12-23 01:41:17,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269027806] [2020-12-23 01:41:17,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:41:17,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:41:17,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345229754] [2020-12-23 01:41:17,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:41:17,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:41:17,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:41:17,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:41:17,228 INFO L87 Difference]: Start difference. First operand 2488 states and 3435 transitions. Second operand 3 states. [2020-12-23 01:41:17,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:41:17,454 INFO L93 Difference]: Finished difference Result 5251 states and 7296 transitions. [2020-12-23 01:41:17,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:41:17,454 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 264 [2020-12-23 01:41:17,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:41:17,470 INFO L225 Difference]: With dead ends: 5251 [2020-12-23 01:41:17,471 INFO L226 Difference]: Without dead ends: 2770 [2020-12-23 01:41:17,475 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 01:41:17,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2770 states. [2020-12-23 01:41:17,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2770 to 2698. [2020-12-23 01:41:17,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2698 states. [2020-12-23 01:41:17,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2698 states to 2698 states and 3747 transitions. [2020-12-23 01:41:17,569 INFO L78 Accepts]: Start accepts. Automaton has 2698 states and 3747 transitions. Word has length 264 [2020-12-23 01:41:17,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:41:17,570 INFO L481 AbstractCegarLoop]: Abstraction has 2698 states and 3747 transitions. [2020-12-23 01:41:17,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:41:17,570 INFO L276 IsEmpty]: Start isEmpty. Operand 2698 states and 3747 transitions. [2020-12-23 01:41:17,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-12-23 01:41:17,578 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:41:17,579 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 13, 13, 13, 13, 13, 11, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 01:41:17,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 01:41:17,579 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:41:17,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:41:17,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1239310138, now seen corresponding path program 1 times [2020-12-23 01:41:17,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:41:17,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476749549] [2020-12-23 01:41:17,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:41:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:41:17,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1169 backedges. 629 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2020-12-23 01:41:17,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476749549] [2020-12-23 01:41:17,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:41:17,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:41:17,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155468465] [2020-12-23 01:41:17,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:41:17,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:41:17,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:41:17,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:41:17,720 INFO L87 Difference]: Start difference. First operand 2698 states and 3747 transitions. Second operand 3 states. [2020-12-23 01:41:17,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:41:17,958 INFO L93 Difference]: Finished difference Result 5443 states and 7548 transitions. [2020-12-23 01:41:17,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:41:17,959 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 299 [2020-12-23 01:41:17,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:41:17,973 INFO L225 Difference]: With dead ends: 5443 [2020-12-23 01:41:17,973 INFO L226 Difference]: Without dead ends: 2764 [2020-12-23 01:41:17,977 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 01:41:17,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2020-12-23 01:41:18,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 2692. [2020-12-23 01:41:18,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2692 states. [2020-12-23 01:41:18,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 3711 transitions. [2020-12-23 01:41:18,052 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 3711 transitions. Word has length 299 [2020-12-23 01:41:18,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:41:18,052 INFO L481 AbstractCegarLoop]: Abstraction has 2692 states and 3711 transitions. [2020-12-23 01:41:18,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:41:18,053 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 3711 transitions. [2020-12-23 01:41:18,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-12-23 01:41:18,061 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:41:18,061 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:41:18,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-23 01:41:18,062 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:41:18,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:41:18,062 INFO L82 PathProgramCache]: Analyzing trace with hash 918915254, now seen corresponding path program 1 times [2020-12-23 01:41:18,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:41:18,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802144099] [2020-12-23 01:41:18,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:41:18,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:41:18,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 663 proven. 0 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2020-12-23 01:41:18,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802144099] [2020-12-23 01:41:18,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:41:18,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:41:18,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809982496] [2020-12-23 01:41:18,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:41:18,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:41:18,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:41:18,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:41:18,231 INFO L87 Difference]: Start difference. First operand 2692 states and 3711 transitions. Second operand 3 states. [2020-12-23 01:41:18,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:41:18,422 INFO L93 Difference]: Finished difference Result 5407 states and 7446 transitions. [2020-12-23 01:41:18,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:41:18,423 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 322 [2020-12-23 01:41:18,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:41:18,437 INFO L225 Difference]: With dead ends: 5407 [2020-12-23 01:41:18,437 INFO L226 Difference]: Without dead ends: 2752 [2020-12-23 01:41:18,441 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 01:41:18,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2752 states. [2020-12-23 01:41:18,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2752 to 2692. [2020-12-23 01:41:18,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2692 states. [2020-12-23 01:41:18,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 3657 transitions. [2020-12-23 01:41:18,517 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 3657 transitions. Word has length 322 [2020-12-23 01:41:18,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:41:18,518 INFO L481 AbstractCegarLoop]: Abstraction has 2692 states and 3657 transitions. [2020-12-23 01:41:18,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:41:18,518 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 3657 transitions. [2020-12-23 01:41:18,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-12-23 01:41:18,527 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:41:18,527 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 14, 14, 14, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2020-12-23 01:41:18,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-23 01:41:18,528 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:41:18,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:41:18,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1665023372, now seen corresponding path program 1 times [2020-12-23 01:41:18,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:41:18,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639789647] [2020-12-23 01:41:18,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:41:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:41:18,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 731 proven. 0 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2020-12-23 01:41:18,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639789647] [2020-12-23 01:41:18,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:41:18,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:41:18,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591062656] [2020-12-23 01:41:18,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:41:18,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:41:18,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:41:18,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:41:18,734 INFO L87 Difference]: Start difference. First operand 2692 states and 3657 transitions. Second operand 3 states. [2020-12-23 01:41:18,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:41:18,957 INFO L93 Difference]: Finished difference Result 5653 states and 7626 transitions. [2020-12-23 01:41:18,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:41:18,958 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 336 [2020-12-23 01:41:18,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:41:18,976 INFO L225 Difference]: With dead ends: 5653 [2020-12-23 01:41:18,976 INFO L226 Difference]: Without dead ends: 2998 [2020-12-23 01:41:18,986 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 01:41:18,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2998 states. [2020-12-23 01:41:19,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2998 to 2782. [2020-12-23 01:41:19,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2782 states. [2020-12-23 01:41:19,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2782 states to 2782 states and 3777 transitions. [2020-12-23 01:41:19,100 INFO L78 Accepts]: Start accepts. Automaton has 2782 states and 3777 transitions. Word has length 336 [2020-12-23 01:41:19,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:41:19,100 INFO L481 AbstractCegarLoop]: Abstraction has 2782 states and 3777 transitions. [2020-12-23 01:41:19,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:41:19,100 INFO L276 IsEmpty]: Start isEmpty. Operand 2782 states and 3777 transitions. [2020-12-23 01:41:19,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-12-23 01:41:19,110 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:41:19,111 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 14, 14, 14, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:41:19,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-23 01:41:19,111 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:41:19,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:41:19,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1597112402, now seen corresponding path program 1 times [2020-12-23 01:41:19,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:41:19,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703812263] [2020-12-23 01:41:19,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:41:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:41:19,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 871 proven. 0 refuted. 0 times theorem prover too weak. 549 trivial. 0 not checked. [2020-12-23 01:41:19,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703812263] [2020-12-23 01:41:19,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:41:19,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:41:19,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790106321] [2020-12-23 01:41:19,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:41:19,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:41:19,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:41:19,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:41:19,389 INFO L87 Difference]: Start difference. First operand 2782 states and 3777 transitions. Second operand 3 states. [2020-12-23 01:41:19,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:41:19,508 INFO L93 Difference]: Finished difference Result 7882 states and 10755 transitions. [2020-12-23 01:41:19,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:41:19,508 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 337 [2020-12-23 01:41:19,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:41:19,549 INFO L225 Difference]: With dead ends: 7882 [2020-12-23 01:41:19,549 INFO L226 Difference]: Without dead ends: 5137 [2020-12-23 01:41:19,555 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 01:41:19,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5137 states. [2020-12-23 01:41:19,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5137 to 5135. [2020-12-23 01:41:19,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5135 states. [2020-12-23 01:41:19,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5135 states to 5135 states and 7007 transitions. [2020-12-23 01:41:19,704 INFO L78 Accepts]: Start accepts. Automaton has 5135 states and 7007 transitions. Word has length 337 [2020-12-23 01:41:19,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:41:19,705 INFO L481 AbstractCegarLoop]: Abstraction has 5135 states and 7007 transitions. [2020-12-23 01:41:19,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:41:19,705 INFO L276 IsEmpty]: Start isEmpty. Operand 5135 states and 7007 transitions. [2020-12-23 01:41:19,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-12-23 01:41:19,717 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:41:19,717 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 13, 13, 11, 11, 9, 9, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:41:19,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-23 01:41:19,717 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:41:19,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:41:19,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1354743787, now seen corresponding path program 1 times [2020-12-23 01:41:19,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:41:19,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070331807] [2020-12-23 01:41:19,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:41:19,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:41:19,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1563 backedges. 904 proven. 10 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2020-12-23 01:41:19,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070331807] [2020-12-23 01:41:19,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978529862] [2020-12-23 01:41:19,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:41:20,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:41:20,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 01:41:20,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:41:20,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1563 backedges. 904 proven. 10 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2020-12-23 01:41:20,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:41:20,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-12-23 01:41:20,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302902021] [2020-12-23 01:41:20,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 01:41:20,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:41:20,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 01:41:20,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 01:41:20,902 INFO L87 Difference]: Start difference. First operand 5135 states and 7007 transitions. Second operand 4 states. [2020-12-23 01:41:21,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:41:21,406 INFO L93 Difference]: Finished difference Result 10175 states and 13865 transitions. [2020-12-23 01:41:21,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 01:41:21,407 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 361 [2020-12-23 01:41:21,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:41:21,426 INFO L225 Difference]: With dead ends: 10175 [2020-12-23 01:41:21,427 INFO L226 Difference]: Without dead ends: 7688 [2020-12-23 01:41:21,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 363 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 01:41:21,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7688 states. [2020-12-23 01:41:21,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7688 to 5669. [2020-12-23 01:41:21,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5669 states. [2020-12-23 01:41:21,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5669 states to 5669 states and 7643 transitions. [2020-12-23 01:41:21,619 INFO L78 Accepts]: Start accepts. Automaton has 5669 states and 7643 transitions. Word has length 361 [2020-12-23 01:41:21,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:41:21,620 INFO L481 AbstractCegarLoop]: Abstraction has 5669 states and 7643 transitions. [2020-12-23 01:41:21,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 01:41:21,620 INFO L276 IsEmpty]: Start isEmpty. Operand 5669 states and 7643 transitions. [2020-12-23 01:41:21,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-12-23 01:41:21,633 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:41:21,633 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 15, 15, 15, 15, 15, 13, 13, 11, 11, 9, 9, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:41:21,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-23 01:41:21,848 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:41:21,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:41:21,849 INFO L82 PathProgramCache]: Analyzing trace with hash 290805068, now seen corresponding path program 2 times [2020-12-23 01:41:21,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:41:21,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99345127] [2020-12-23 01:41:21,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:41:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:41:22,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1649 backedges. 955 proven. 5 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2020-12-23 01:41:22,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99345127] [2020-12-23 01:41:22,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394151293] [2020-12-23 01:41:22,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:41:22,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 01:41:22,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:41:22,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 01:41:22,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:41:22,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1649 backedges. 955 proven. 5 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2020-12-23 01:41:22,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:41:22,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-12-23 01:41:22,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142895218] [2020-12-23 01:41:22,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 01:41:22,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:41:22,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 01:41:22,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 01:41:22,752 INFO L87 Difference]: Start difference. First operand 5669 states and 7643 transitions. Second operand 4 states. [2020-12-23 01:41:23,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:41:23,149 INFO L93 Difference]: Finished difference Result 12703 states and 17150 transitions. [2020-12-23 01:41:23,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 01:41:23,150 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 374 [2020-12-23 01:41:23,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:41:23,167 INFO L225 Difference]: With dead ends: 12703 [2020-12-23 01:41:23,167 INFO L226 Difference]: Without dead ends: 7058 [2020-12-23 01:41:23,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 376 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 01:41:23,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7058 states. [2020-12-23 01:41:23,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7058 to 5789. [2020-12-23 01:41:23,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5789 states. [2020-12-23 01:41:23,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5789 states to 5789 states and 7724 transitions. [2020-12-23 01:41:23,344 INFO L78 Accepts]: Start accepts. Automaton has 5789 states and 7724 transitions. Word has length 374 [2020-12-23 01:41:23,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:41:23,345 INFO L481 AbstractCegarLoop]: Abstraction has 5789 states and 7724 transitions. [2020-12-23 01:41:23,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 01:41:23,345 INFO L276 IsEmpty]: Start isEmpty. Operand 5789 states and 7724 transitions. [2020-12-23 01:41:23,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-12-23 01:41:23,356 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:41:23,357 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 16, 16, 16, 14, 14, 12, 12, 10, 10, 8, 8, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:41:23,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-23 01:41:23,572 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:41:23,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:41:23,572 INFO L82 PathProgramCache]: Analyzing trace with hash -939951161, now seen corresponding path program 1 times [2020-12-23 01:41:23,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:41:23,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693992004] [2020-12-23 01:41:23,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:41:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:41:23,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1970 backedges. 885 proven. 0 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2020-12-23 01:41:23,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693992004] [2020-12-23 01:41:23,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:41:23,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:41:23,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077617507] [2020-12-23 01:41:23,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:41:23,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:41:23,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:41:23,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:41:23,812 INFO L87 Difference]: Start difference. First operand 5789 states and 7724 transitions. Second operand 3 states. [2020-12-23 01:41:24,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:41:24,065 INFO L93 Difference]: Finished difference Result 11133 states and 14642 transitions. [2020-12-23 01:41:24,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:41:24,066 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 413 [2020-12-23 01:41:24,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:41:24,076 INFO L225 Difference]: With dead ends: 11133 [2020-12-23 01:41:24,077 INFO L226 Difference]: Without dead ends: 3109 [2020-12-23 01:41:24,088 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 01:41:24,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3109 states. [2020-12-23 01:41:24,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3109 to 3043. [2020-12-23 01:41:24,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3043 states. [2020-12-23 01:41:24,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3043 states to 3043 states and 4063 transitions. [2020-12-23 01:41:24,170 INFO L78 Accepts]: Start accepts. Automaton has 3043 states and 4063 transitions. Word has length 413 [2020-12-23 01:41:24,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:41:24,170 INFO L481 AbstractCegarLoop]: Abstraction has 3043 states and 4063 transitions. [2020-12-23 01:41:24,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:41:24,171 INFO L276 IsEmpty]: Start isEmpty. Operand 3043 states and 4063 transitions. [2020-12-23 01:41:24,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2020-12-23 01:41:24,178 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:41:24,179 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 19, 19, 17, 17, 15, 15, 13, 13, 11, 11, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2020-12-23 01:41:24,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-23 01:41:24,179 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:41:24,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:41:24,180 INFO L82 PathProgramCache]: Analyzing trace with hash -826650578, now seen corresponding path program 1 times [2020-12-23 01:41:24,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:41:24,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848364356] [2020-12-23 01:41:24,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:41:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:41:24,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2898 backedges. 1648 proven. 14 refuted. 0 times theorem prover too weak. 1236 trivial. 0 not checked. [2020-12-23 01:41:24,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848364356] [2020-12-23 01:41:24,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271570980] [2020-12-23 01:41:24,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:41:24,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:41:24,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 866 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 01:41:24,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:41:25,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2898 backedges. 1075 proven. 0 refuted. 0 times theorem prover too weak. 1823 trivial. 0 not checked. [2020-12-23 01:41:25,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:41:25,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-23 01:41:25,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072385448] [2020-12-23 01:41:25,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:41:25,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:41:25,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:41:25,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 01:41:25,564 INFO L87 Difference]: Start difference. First operand 3043 states and 4063 transitions. Second operand 3 states. [2020-12-23 01:41:25,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:41:25,613 INFO L93 Difference]: Finished difference Result 3068 states and 4093 transitions. [2020-12-23 01:41:25,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:41:25,613 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 511 [2020-12-23 01:41:25,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:41:25,620 INFO L225 Difference]: With dead ends: 3068 [2020-12-23 01:41:25,620 INFO L226 Difference]: Without dead ends: 2571 [2020-12-23 01:41:25,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 511 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 01:41:25,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2571 states. [2020-12-23 01:41:25,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2571 to 2548. [2020-12-23 01:41:25,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2548 states. [2020-12-23 01:41:25,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 3399 transitions. [2020-12-23 01:41:25,686 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 3399 transitions. Word has length 511 [2020-12-23 01:41:25,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:41:25,687 INFO L481 AbstractCegarLoop]: Abstraction has 2548 states and 3399 transitions. [2020-12-23 01:41:25,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:41:25,687 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 3399 transitions. [2020-12-23 01:41:25,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2020-12-23 01:41:25,694 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:41:25,695 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 18, 16, 16, 14, 14, 13, 13, 12, 12, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2020-12-23 01:41:25,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-23 01:41:25,909 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:41:25,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:41:25,910 INFO L82 PathProgramCache]: Analyzing trace with hash -301655084, now seen corresponding path program 1 times [2020-12-23 01:41:25,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:41:25,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289385909] [2020-12-23 01:41:25,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:41:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:41:26,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2784 backedges. 1623 proven. 14 refuted. 0 times theorem prover too weak. 1147 trivial. 0 not checked. [2020-12-23 01:41:26,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289385909] [2020-12-23 01:41:26,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423620428] [2020-12-23 01:41:26,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:41:26,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:41:26,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-23 01:41:26,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:41:26,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2784 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 2506 trivial. 0 not checked. [2020-12-23 01:41:26,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:41:26,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-23 01:41:26,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018259269] [2020-12-23 01:41:26,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:41:26,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:41:26,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:41:26,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 01:41:26,838 INFO L87 Difference]: Start difference. First operand 2548 states and 3399 transitions. Second operand 3 states. [2020-12-23 01:41:27,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:41:27,026 INFO L93 Difference]: Finished difference Result 5167 states and 6909 transitions. [2020-12-23 01:41:27,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:41:27,026 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 512 [2020-12-23 01:41:27,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:41:27,033 INFO L225 Difference]: With dead ends: 5167 [2020-12-23 01:41:27,033 INFO L226 Difference]: Without dead ends: 2656 [2020-12-23 01:41:27,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 01:41:27,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2656 states. [2020-12-23 01:41:27,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2656 to 2653. [2020-12-23 01:41:27,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2653 states. [2020-12-23 01:41:27,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2653 states to 2653 states and 3411 transitions. [2020-12-23 01:41:27,100 INFO L78 Accepts]: Start accepts. Automaton has 2653 states and 3411 transitions. Word has length 512 [2020-12-23 01:41:27,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:41:27,101 INFO L481 AbstractCegarLoop]: Abstraction has 2653 states and 3411 transitions. [2020-12-23 01:41:27,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:41:27,102 INFO L276 IsEmpty]: Start isEmpty. Operand 2653 states and 3411 transitions. [2020-12-23 01:41:27,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2020-12-23 01:41:27,109 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:41:27,110 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 21, 21, 19, 19, 17, 17, 16, 16, 15, 15, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1] [2020-12-23 01:41:27,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:41:27,323 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:41:27,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:41:27,325 INFO L82 PathProgramCache]: Analyzing trace with hash 44620561, now seen corresponding path program 2 times [2020-12-23 01:41:27,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:41:27,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31467649] [2020-12-23 01:41:27,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:41:27,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:41:27,625 INFO L134 CoverageAnalysis]: Checked inductivity of 4135 backedges. 2131 proven. 14 refuted. 0 times theorem prover too weak. 1990 trivial. 0 not checked. [2020-12-23 01:41:27,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31467649] [2020-12-23 01:41:27,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120928935] [2020-12-23 01:41:27,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:41:27,831 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 01:41:27,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:41:27,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 1007 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 01:41:27,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:41:28,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4135 backedges. 2131 proven. 14 refuted. 0 times theorem prover too weak. 1990 trivial. 0 not checked. [2020-12-23 01:41:28,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:41:28,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-12-23 01:41:28,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229418512] [2020-12-23 01:41:28,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 01:41:28,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:41:28,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 01:41:28,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 01:41:28,457 INFO L87 Difference]: Start difference. First operand 2653 states and 3411 transitions. Second operand 4 states. [2020-12-23 01:41:28,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:41:28,664 INFO L93 Difference]: Finished difference Result 2888 states and 3708 transitions. [2020-12-23 01:41:28,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 01:41:28,664 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 623 [2020-12-23 01:41:28,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:41:28,665 INFO L225 Difference]: With dead ends: 2888 [2020-12-23 01:41:28,665 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 01:41:28,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 625 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 01:41:28,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 01:41:28,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 01:41:28,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 01:41:28,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 01:41:28,669 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 623 [2020-12-23 01:41:28,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:41:28,669 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 01:41:28,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 01:41:28,669 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 01:41:28,669 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 01:41:28,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-23 01:41:28,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-23 01:41:29,413 WARN L197 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 115 [2020-12-23 01:41:30,426 WARN L197 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 53 [2020-12-23 01:41:30,603 INFO L189 CegarLoopUtils]: For program point L531(lines 531 535) no Hoare annotation was computed. [2020-12-23 01:41:30,603 INFO L189 CegarLoopUtils]: For program point L433(lines 433 435) no Hoare annotation was computed. [2020-12-23 01:41:30,603 INFO L189 CegarLoopUtils]: For program point L334(lines 334 336) no Hoare annotation was computed. [2020-12-23 01:41:30,604 INFO L192 CegarLoopUtils]: At program point L202(lines 201 489) the Hoare annotation is: true [2020-12-23 01:41:30,604 INFO L189 CegarLoopUtils]: For program point L169(lines 169 499) no Hoare annotation was computed. [2020-12-23 01:41:30,604 INFO L189 CegarLoopUtils]: For program point L136(lines 136 510) no Hoare annotation was computed. [2020-12-23 01:41:30,604 INFO L189 CegarLoopUtils]: For program point L103(lines 103 521) no Hoare annotation was computed. [2020-12-23 01:41:30,604 INFO L185 CegarLoopUtils]: At program point L170(lines 166 500) the Hoare annotation is: (and (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0) (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) (<= ULTIMATE.start_ssl3_connect_~s__state~0 4512) (= ULTIMATE.start_ssl3_connect_~s__hit~0 0)) [2020-12-23 01:41:30,604 INFO L185 CegarLoopUtils]: At program point L104(lines 103 521) the Hoare annotation is: (and (= ULTIMATE.start_ssl3_connect_~blastFlag~0 0) (= 12292 ULTIMATE.start_ssl3_connect_~s__state~0)) [2020-12-23 01:41:30,604 INFO L189 CegarLoopUtils]: For program point L468(lines 468 470) no Hoare annotation was computed. [2020-12-23 01:41:30,604 INFO L189 CegarLoopUtils]: For program point L468-2(lines 468 470) no Hoare annotation was computed. [2020-12-23 01:41:30,605 INFO L189 CegarLoopUtils]: For program point L436(lines 436 440) no Hoare annotation was computed. [2020-12-23 01:41:30,605 INFO L189 CegarLoopUtils]: For program point L436-2(lines 436 440) no Hoare annotation was computed. [2020-12-23 01:41:30,605 INFO L189 CegarLoopUtils]: For program point L337(lines 337 341) no Hoare annotation was computed. [2020-12-23 01:41:30,605 INFO L189 CegarLoopUtils]: For program point L271(lines 271 273) no Hoare annotation was computed. [2020-12-23 01:41:30,606 INFO L189 CegarLoopUtils]: For program point L337-2(lines 337 341) no Hoare annotation was computed. [2020-12-23 01:41:30,607 INFO L189 CegarLoopUtils]: For program point L271-2(lines 203 486) no Hoare annotation was computed. [2020-12-23 01:41:30,607 INFO L189 CegarLoopUtils]: For program point L172(lines 172 498) no Hoare annotation was computed. [2020-12-23 01:41:30,607 INFO L189 CegarLoopUtils]: For program point L139(lines 139 509) no Hoare annotation was computed. [2020-12-23 01:41:30,607 INFO L189 CegarLoopUtils]: For program point L106(lines 106 520) no Hoare annotation was computed. [2020-12-23 01:41:30,608 INFO L185 CegarLoopUtils]: At program point L140(lines 136 510) the Hoare annotation is: (and (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) (<= ULTIMATE.start_ssl3_connect_~s__state~0 4432) (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0) (= ULTIMATE.start_ssl3_connect_~s__hit~0 0)) [2020-12-23 01:41:30,610 INFO L189 CegarLoopUtils]: For program point L306(lines 306 308) no Hoare annotation was computed. [2020-12-23 01:41:30,610 INFO L189 CegarLoopUtils]: For program point L240(lines 240 243) no Hoare annotation was computed. [2020-12-23 01:41:30,610 INFO L189 CegarLoopUtils]: For program point L306-2(lines 203 486) no Hoare annotation was computed. [2020-12-23 01:41:30,610 INFO L189 CegarLoopUtils]: For program point L406(lines 406 408) no Hoare annotation was computed. [2020-12-23 01:41:30,610 INFO L189 CegarLoopUtils]: For program point L373(lines 373 375) no Hoare annotation was computed. [2020-12-23 01:41:30,611 INFO L185 CegarLoopUtils]: At program point L208(lines 106 520) the Hoare annotation is: (and (<= ULTIMATE.start_ssl3_connect_~s__state~0 4352) (= ULTIMATE.start_ssl3_connect_~blastFlag~0 0)) [2020-12-23 01:41:30,611 INFO L189 CegarLoopUtils]: For program point L175(lines 175 497) no Hoare annotation was computed. [2020-12-23 01:41:30,611 INFO L189 CegarLoopUtils]: For program point L142(lines 142 508) no Hoare annotation was computed. [2020-12-23 01:41:30,611 INFO L189 CegarLoopUtils]: For program point L109(lines 109 519) no Hoare annotation was computed. [2020-12-23 01:41:30,611 INFO L185 CegarLoopUtils]: At program point L176(lines 172 498) the Hoare annotation is: (and (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0) (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) (<= ULTIMATE.start_ssl3_connect_~s__state~0 4512) (= ULTIMATE.start_ssl3_connect_~s__hit~0 0)) [2020-12-23 01:41:30,611 INFO L189 CegarLoopUtils]: For program point L474(lines 474 476) no Hoare annotation was computed. [2020-12-23 01:41:30,612 INFO L189 CegarLoopUtils]: For program point L474-2(lines 474 476) no Hoare annotation was computed. [2020-12-23 01:41:30,612 INFO L192 CegarLoopUtils]: At program point L541(lines 99 542) the Hoare annotation is: true [2020-12-23 01:41:30,612 INFO L189 CegarLoopUtils]: For program point L277(lines 277 281) no Hoare annotation was computed. [2020-12-23 01:41:30,612 INFO L189 CegarLoopUtils]: For program point L277-2(lines 277 281) no Hoare annotation was computed. [2020-12-23 01:41:30,613 INFO L189 CegarLoopUtils]: For program point L178(lines 178 496) no Hoare annotation was computed. [2020-12-23 01:41:30,613 INFO L189 CegarLoopUtils]: For program point L145(lines 145 507) no Hoare annotation was computed. [2020-12-23 01:41:30,613 INFO L189 CegarLoopUtils]: For program point L112(lines 112 518) no Hoare annotation was computed. [2020-12-23 01:41:30,613 INFO L185 CegarLoopUtils]: At program point L146(lines 142 508) the Hoare annotation is: (and (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0) (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) (<= ULTIMATE.start_ssl3_connect_~s__state~0 4448) (= ULTIMATE.start_ssl3_connect_~s__hit~0 0)) [2020-12-23 01:41:30,613 INFO L189 CegarLoopUtils]: For program point L213(lines 213 215) no Hoare annotation was computed. [2020-12-23 01:41:30,613 INFO L189 CegarLoopUtils]: For program point L213-2(lines 213 215) no Hoare annotation was computed. [2020-12-23 01:41:30,613 INFO L189 CegarLoopUtils]: For program point L181(lines 181 495) no Hoare annotation was computed. [2020-12-23 01:41:30,615 INFO L189 CegarLoopUtils]: For program point L148(lines 148 506) no Hoare annotation was computed. [2020-12-23 01:41:30,615 INFO L189 CegarLoopUtils]: For program point L115(lines 115 517) no Hoare annotation was computed. [2020-12-23 01:41:30,615 INFO L189 CegarLoopUtils]: For program point L479(lines 479 481) no Hoare annotation was computed. [2020-12-23 01:41:30,615 INFO L189 CegarLoopUtils]: For program point L446(lines 446 457) no Hoare annotation was computed. [2020-12-23 01:41:30,615 INFO L189 CegarLoopUtils]: For program point L413(lines 413 427) no Hoare annotation was computed. [2020-12-23 01:41:30,615 INFO L189 CegarLoopUtils]: For program point L413-1(lines 413 427) no Hoare annotation was computed. [2020-12-23 01:41:30,615 INFO L189 CegarLoopUtils]: For program point L446-2(lines 446 457) no Hoare annotation was computed. [2020-12-23 01:41:30,615 INFO L189 CegarLoopUtils]: For program point L314(lines 314 317) no Hoare annotation was computed. [2020-12-23 01:41:30,616 INFO L185 CegarLoopUtils]: At program point L182(lines 178 496) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4528))) (or (and .cse0 (<= 4512 ULTIMATE.start_ssl3_connect_~s__state~0) (= ULTIMATE.start_ssl3_connect_~blastFlag~0 2)) (and .cse0 (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0) (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) (= ULTIMATE.start_ssl3_connect_~s__hit~0 0)))) [2020-12-23 01:41:30,616 INFO L189 CegarLoopUtils]: For program point L546(lines 546 548) no Hoare annotation was computed. [2020-12-23 01:41:30,616 INFO L189 CegarLoopUtils]: For program point L546-2(lines 546 548) no Hoare annotation was computed. [2020-12-23 01:41:30,616 INFO L189 CegarLoopUtils]: For program point L349(lines 349 351) no Hoare annotation was computed. [2020-12-23 01:41:30,616 INFO L189 CegarLoopUtils]: For program point L184(lines 184 494) no Hoare annotation was computed. [2020-12-23 01:41:30,616 INFO L189 CegarLoopUtils]: For program point L151(lines 151 505) no Hoare annotation was computed. [2020-12-23 01:41:30,616 INFO L189 CegarLoopUtils]: For program point L118(lines 118 516) no Hoare annotation was computed. [2020-12-23 01:41:30,616 INFO L189 CegarLoopUtils]: For program point L383(lines 383 385) no Hoare annotation was computed. [2020-12-23 01:41:30,616 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-23 01:41:30,617 INFO L189 CegarLoopUtils]: For program point L218(lines 218 221) no Hoare annotation was computed. [2020-12-23 01:41:30,617 INFO L185 CegarLoopUtils]: At program point L152(lines 148 506) the Hoare annotation is: (and (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0) (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) (<= ULTIMATE.start_ssl3_connect_~s__state~0 4464) (= ULTIMATE.start_ssl3_connect_~s__hit~0 0)) [2020-12-23 01:41:30,617 INFO L189 CegarLoopUtils]: For program point L86(lines 86 92) no Hoare annotation was computed. [2020-12-23 01:41:30,617 INFO L189 CegarLoopUtils]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-12-23 01:41:30,617 INFO L189 CegarLoopUtils]: For program point L252(lines 252 258) no Hoare annotation was computed. [2020-12-23 01:41:30,618 INFO L189 CegarLoopUtils]: For program point L451(lines 451 454) no Hoare annotation was computed. [2020-12-23 01:41:30,618 INFO L189 CegarLoopUtils]: For program point L187(lines 187 493) no Hoare annotation was computed. [2020-12-23 01:41:30,618 INFO L189 CegarLoopUtils]: For program point L154(lines 154 504) no Hoare annotation was computed. [2020-12-23 01:41:30,618 INFO L189 CegarLoopUtils]: For program point L121(lines 121 515) no Hoare annotation was computed. [2020-12-23 01:41:30,618 INFO L192 CegarLoopUtils]: At program point L551(lines 12 553) the Hoare annotation is: true [2020-12-23 01:41:30,618 INFO L185 CegarLoopUtils]: At program point L188(lines 184 494) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4560)) (.cse1 (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0)) (.cse2 (= ULTIMATE.start_ssl3_connect_~s__hit~0 0))) (or (and .cse0 .cse1 (<= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 4560) .cse2) (and .cse0 (<= 4512 ULTIMATE.start_ssl3_connect_~s__state~0) (= ULTIMATE.start_ssl3_connect_~blastFlag~0 2)) (and .cse0 .cse1 (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) .cse2))) [2020-12-23 01:41:30,618 INFO L185 CegarLoopUtils]: At program point L122(lines 118 516) the Hoare annotation is: (and (= ULTIMATE.start_ssl3_connect_~blastFlag~0 0) (<= ULTIMATE.start_ssl3_connect_~s__state~0 4432) (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0)) [2020-12-23 01:41:30,619 INFO L189 CegarLoopUtils]: For program point L89(lines 89 91) no Hoare annotation was computed. [2020-12-23 01:41:30,619 INFO L189 CegarLoopUtils]: For program point L89-2(lines 86 92) no Hoare annotation was computed. [2020-12-23 01:41:30,619 INFO L189 CegarLoopUtils]: For program point L288(lines 288 298) no Hoare annotation was computed. [2020-12-23 01:41:30,619 INFO L189 CegarLoopUtils]: For program point L255(lines 255 257) no Hoare annotation was computed. [2020-12-23 01:41:30,619 INFO L189 CegarLoopUtils]: For program point L288-2(lines 288 298) no Hoare annotation was computed. [2020-12-23 01:41:30,619 INFO L189 CegarLoopUtils]: For program point L255-2(lines 203 486) no Hoare annotation was computed. [2020-12-23 01:41:30,620 INFO L185 CegarLoopUtils]: At program point L487(lines 100 540) the Hoare annotation is: (let ((.cse7 (= ULTIMATE.start_ssl3_connect_~s__hit~0 0))) (let ((.cse8 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4560)) (.cse1 (not .cse7)) (.cse10 (<= 4560 ULTIMATE.start_ssl3_connect_~s__state~0)) (.cse0 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4352)) (.cse9 (<= 4560 ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0)) (.cse3 (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0)) (.cse11 (<= ULTIMATE.start_ssl3_connect_~s__state~0 3)) (.cse6 (<= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 4560)) (.cse12 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4528)) (.cse4 (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4)) (.cse2 (= ULTIMATE.start_ssl3_connect_~blastFlag~0 2)) (.cse5 (= 4400 ULTIMATE.start_ssl3_connect_~s__state~0))) (or (and .cse0 .cse1 (<= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 3) .cse2 .cse3) (and .cse4 .cse5 .cse6 .cse7) (and .cse8 .cse9 .cse6 .cse10 .cse7) (and .cse8 .cse1 .cse2 .cse10) (and .cse0 .cse9 .cse3 .cse6 .cse7) (and .cse4 (= ULTIMATE.start_ssl3_connect_~s__state~0 4416) .cse7) (and (= ULTIMATE.start_ssl3_connect_~blastFlag~0 1) (= ULTIMATE.start_ssl3_connect_~s__state~0 4384)) (and .cse2 .cse11 .cse7) (and .cse12 (<= 4512 ULTIMATE.start_ssl3_connect_~s__state~0) .cse2) (and .cse11 .cse6) (and .cse12 (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0) .cse4 .cse7) (and (= ULTIMATE.start_ssl3_connect_~blastFlag~0 0) (= ULTIMATE.start_ssl3_connect_~s__state~0 4368)) (and .cse2 .cse5 .cse7)))) [2020-12-23 01:41:30,620 INFO L189 CegarLoopUtils]: For program point L322(lines 322 324) no Hoare annotation was computed. [2020-12-23 01:41:30,620 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-23 01:41:30,620 INFO L189 CegarLoopUtils]: For program point L190(lines 190 492) no Hoare annotation was computed. [2020-12-23 01:41:30,620 INFO L189 CegarLoopUtils]: For program point L157(lines 157 503) no Hoare annotation was computed. [2020-12-23 01:41:30,620 INFO L189 CegarLoopUtils]: For program point L124(lines 124 514) no Hoare annotation was computed. [2020-12-23 01:41:30,620 INFO L189 CegarLoopUtils]: For program point L389(lines 389 393) no Hoare annotation was computed. [2020-12-23 01:41:30,620 INFO L185 CegarLoopUtils]: At program point L323(lines 77 552) the Hoare annotation is: false [2020-12-23 01:41:30,620 INFO L189 CegarLoopUtils]: For program point L389-2(lines 203 486) no Hoare annotation was computed. [2020-12-23 01:41:30,621 INFO L189 CegarLoopUtils]: For program point L224(lines 224 235) no Hoare annotation was computed. [2020-12-23 01:41:30,621 INFO L189 CegarLoopUtils]: For program point L224-2(lines 203 486) no Hoare annotation was computed. [2020-12-23 01:41:30,621 INFO L189 CegarLoopUtils]: For program point L522(lines 522 538) no Hoare annotation was computed. [2020-12-23 01:41:30,622 INFO L189 CegarLoopUtils]: For program point L523(lines 523 537) no Hoare annotation was computed. [2020-12-23 01:41:30,622 INFO L189 CegarLoopUtils]: For program point L358(lines 358 360) no Hoare annotation was computed. [2020-12-23 01:41:30,622 INFO L189 CegarLoopUtils]: For program point L325(lines 325 327) no Hoare annotation was computed. [2020-12-23 01:41:30,622 INFO L189 CegarLoopUtils]: For program point L292(lines 292 294) no Hoare annotation was computed. [2020-12-23 01:41:30,622 INFO L189 CegarLoopUtils]: For program point L226(lines 226 229) no Hoare annotation was computed. [2020-12-23 01:41:30,622 INFO L189 CegarLoopUtils]: For program point L292-2(lines 290 298) no Hoare annotation was computed. [2020-12-23 01:41:30,622 INFO L189 CegarLoopUtils]: For program point L193(lines 193 491) no Hoare annotation was computed. [2020-12-23 01:41:30,622 INFO L189 CegarLoopUtils]: For program point L160(lines 160 502) no Hoare annotation was computed. [2020-12-23 01:41:30,622 INFO L189 CegarLoopUtils]: For program point L127(lines 127 513) no Hoare annotation was computed. [2020-12-23 01:41:30,622 INFO L189 CegarLoopUtils]: For program point L94(lines 94 98) no Hoare annotation was computed. [2020-12-23 01:41:30,623 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-23 01:41:30,623 INFO L189 CegarLoopUtils]: For program point L524(lines 524 529) no Hoare annotation was computed. [2020-12-23 01:41:30,623 INFO L189 CegarLoopUtils]: For program point L524-2(lines 523 537) no Hoare annotation was computed. [2020-12-23 01:41:30,623 INFO L185 CegarLoopUtils]: At program point L194(lines 190 492) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4560)) (.cse2 (= ULTIMATE.start_ssl3_connect_~s__hit~0 0)) (.cse1 (<= 4560 ULTIMATE.start_ssl3_connect_~s__state~0))) (or (and .cse0 (<= 4560 ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0) (<= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 4560) .cse1 .cse2) (and .cse0 (not .cse2) (= ULTIMATE.start_ssl3_connect_~blastFlag~0 2) .cse1))) [2020-12-23 01:41:30,623 INFO L185 CegarLoopUtils]: At program point L128(lines 124 514) the Hoare annotation is: (and (<= ULTIMATE.start_ssl3_connect_~s__state~0 4432) (= ULTIMATE.start_ssl3_connect_~blastFlag~0 1) (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0)) [2020-12-23 01:41:30,623 INFO L189 CegarLoopUtils]: For program point L95(lines 95 97) no Hoare annotation was computed. [2020-12-23 01:41:30,623 INFO L189 CegarLoopUtils]: For program point L526(lines 526 528) no Hoare annotation was computed. [2020-12-23 01:41:30,623 INFO L189 CegarLoopUtils]: For program point L196(lines 196 490) no Hoare annotation was computed. [2020-12-23 01:41:30,624 INFO L189 CegarLoopUtils]: For program point L163(lines 163 501) no Hoare annotation was computed. [2020-12-23 01:41:30,624 INFO L189 CegarLoopUtils]: For program point L130(lines 130 512) no Hoare annotation was computed. [2020-12-23 01:41:30,624 INFO L189 CegarLoopUtils]: For program point L362(lines 362 367) no Hoare annotation was computed. [2020-12-23 01:41:30,624 INFO L189 CegarLoopUtils]: For program point L362-2(lines 362 367) no Hoare annotation was computed. [2020-12-23 01:41:30,624 INFO L189 CegarLoopUtils]: For program point L230(lines 230 233) no Hoare annotation was computed. [2020-12-23 01:41:30,624 INFO L185 CegarLoopUtils]: At program point L197(lines 196 490) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4352)) (.cse2 (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0)) (.cse1 (= ULTIMATE.start_ssl3_connect_~s__hit~0 0))) (or (and .cse0 (not .cse1) (<= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 3) (= ULTIMATE.start_ssl3_connect_~blastFlag~0 2) .cse2) (and .cse0 (<= 4560 ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0) .cse2 (<= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 4560) .cse1))) [2020-12-23 01:41:30,624 INFO L185 CegarLoopUtils]: At program point L164(lines 154 504) the Hoare annotation is: (and (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0) (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) (<= ULTIMATE.start_ssl3_connect_~s__state~0 4480) (= ULTIMATE.start_ssl3_connect_~s__hit~0 0)) [2020-12-23 01:41:30,624 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-23 01:41:30,625 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 550) no Hoare annotation was computed. [2020-12-23 01:41:30,625 INFO L189 CegarLoopUtils]: For program point L462-1(lines 462 464) no Hoare annotation was computed. [2020-12-23 01:41:30,625 INFO L189 CegarLoopUtils]: For program point L264(lines 264 266) no Hoare annotation was computed. [2020-12-23 01:41:30,625 INFO L192 CegarLoopUtils]: At program point L562(lines 554 564) the Hoare annotation is: true [2020-12-23 01:41:30,625 INFO L189 CegarLoopUtils]: For program point L199(lines 199 489) no Hoare annotation was computed. [2020-12-23 01:41:30,625 INFO L189 CegarLoopUtils]: For program point L166(lines 166 500) no Hoare annotation was computed. [2020-12-23 01:41:30,625 INFO L189 CegarLoopUtils]: For program point L133(lines 133 511) no Hoare annotation was computed. [2020-12-23 01:41:30,625 INFO L189 CegarLoopUtils]: For program point L100-1(lines 77 552) no Hoare annotation was computed. [2020-12-23 01:41:30,625 INFO L189 CegarLoopUtils]: For program point L398(lines 398 401) no Hoare annotation was computed. [2020-12-23 01:41:30,625 INFO L192 CegarLoopUtils]: At program point L200(lines 199 489) the Hoare annotation is: true [2020-12-23 01:41:30,626 INFO L185 CegarLoopUtils]: At program point L134(lines 130 512) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4432)) (.cse1 (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0)) (.cse2 (= ULTIMATE.start_ssl3_connect_~s__hit~0 0))) (or (and (<= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) .cse0 .cse1 (<= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 4560) .cse2) (and (= ULTIMATE.start_ssl3_connect_~blastFlag~0 2) .cse0 .cse1 .cse2))) [2020-12-23 01:41:30,626 INFO L189 CegarLoopUtils]: For program point L101(line 101) no Hoare annotation was computed. [2020-12-23 01:41:30,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:41:30 BoogieIcfgContainer [2020-12-23 01:41:30,672 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 01:41:30,673 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 01:41:30,673 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 01:41:30,673 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 01:41:30,674 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:41:12" (3/4) ... [2020-12-23 01:41:30,677 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 01:41:30,696 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-23 01:41:30,697 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 01:41:30,698 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 01:41:30,699 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 01:41:30,798 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/openssl-simplified/s3_clnt_2.cil-2.c-witness.graphml [2020-12-23 01:41:30,799 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 01:41:30,800 INFO L168 Benchmark]: Toolchain (without parser) took 20233.18 ms. Allocated memory was 151.0 MB in the beginning and 1.3 GB in the end (delta: 1.2 GB). Free memory was 125.8 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 48.5 MB. Max. memory is 8.0 GB. [2020-12-23 01:41:30,800 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 124.5 MB in the end (delta: 81.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 01:41:30,801 INFO L168 Benchmark]: CACSL2BoogieTranslator took 463.82 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 111.1 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-12-23 01:41:30,801 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.03 ms. Allocated memory is still 151.0 MB. Free memory was 111.1 MB in the beginning and 108.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 01:41:30,802 INFO L168 Benchmark]: Boogie Preprocessor took 58.56 ms. Allocated memory is still 151.0 MB. Free memory was 108.3 MB in the beginning and 106.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 01:41:30,802 INFO L168 Benchmark]: RCFGBuilder took 1013.72 ms. Allocated memory is still 151.0 MB. Free memory was 106.2 MB in the beginning and 89.3 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.7 MB. Max. memory is 8.0 GB. [2020-12-23 01:41:30,802 INFO L168 Benchmark]: TraceAbstraction took 18500.46 ms. Allocated memory was 151.0 MB in the beginning and 1.3 GB in the end (delta: 1.2 GB). Free memory was 88.8 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 743.8 MB. Max. memory is 8.0 GB. [2020-12-23 01:41:30,803 INFO L168 Benchmark]: Witness Printer took 126.06 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 01:41:30,805 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 124.5 MB in the end (delta: 81.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 463.82 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 111.1 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 60.03 ms. Allocated memory is still 151.0 MB. Free memory was 111.1 MB in the beginning and 108.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 58.56 ms. Allocated memory is still 151.0 MB. Free memory was 108.3 MB in the beginning and 106.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1013.72 ms. Allocated memory is still 151.0 MB. Free memory was 106.2 MB in the beginning and 89.3 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 18500.46 ms. Allocated memory was 151.0 MB in the beginning and 1.3 GB in the end (delta: 1.2 GB). Free memory was 88.8 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 743.8 MB. Max. memory is 8.0 GB. * Witness Printer took 126.06 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 550]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 118]: Loop Invariant Derived loop invariant: (blastFlag == 0 && s__state <= 4432) && 4352 <= s__state - InvariantResult [Line: 196]: Loop Invariant Derived loop invariant: ((((s__state <= 4352 && !(s__hit == 0)) && s__s3__tmp__next_state___0 <= 3) && blastFlag == 2) && 4352 <= s__state) || ((((s__state <= 4352 && 4560 <= s__s3__tmp__next_state___0) && 4352 <= s__state) && s__s3__tmp__next_state___0 <= 4560) && s__hit == 0) - InvariantResult [Line: 106]: Loop Invariant Derived loop invariant: s__state <= 4352 && blastFlag == 0 - InvariantResult [Line: 77]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 172]: Loop Invariant Derived loop invariant: ((4432 <= s__state && blastFlag <= 4) && s__state <= 4512) && s__hit == 0 - InvariantResult [Line: 130]: Loop Invariant Derived loop invariant: ((((blastFlag <= 4 && s__state <= 4432) && 4352 <= s__state) && s__s3__tmp__next_state___0 <= 4560) && s__hit == 0) || (((blastFlag == 2 && s__state <= 4432) && 4352 <= s__state) && s__hit == 0) - InvariantResult [Line: 184]: Loop Invariant Derived loop invariant: ((((s__state <= 4560 && 4432 <= s__state) && s__s3__tmp__next_state___0 <= 4560) && s__hit == 0) || ((s__state <= 4560 && 4512 <= s__state) && blastFlag == 2)) || (((s__state <= 4560 && 4432 <= s__state) && blastFlag <= 4) && s__hit == 0) - InvariantResult [Line: 142]: Loop Invariant Derived loop invariant: ((4432 <= s__state && blastFlag <= 4) && s__state <= 4448) && s__hit == 0 - InvariantResult [Line: 103]: Loop Invariant Derived loop invariant: blastFlag == 0 && 12292 == s__state - InvariantResult [Line: 199]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 166]: Loop Invariant Derived loop invariant: ((4432 <= s__state && blastFlag <= 4) && s__state <= 4512) && s__hit == 0 - InvariantResult [Line: 201]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 124]: Loop Invariant Derived loop invariant: (s__state <= 4432 && blastFlag == 1) && 4352 <= s__state - InvariantResult [Line: 99]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 178]: Loop Invariant Derived loop invariant: ((s__state <= 4528 && 4512 <= s__state) && blastFlag == 2) || (((s__state <= 4528 && 4432 <= s__state) && blastFlag <= 4) && s__hit == 0) - InvariantResult [Line: 554]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: (((((((((((((((s__state <= 4352 && !(s__hit == 0)) && s__s3__tmp__next_state___0 <= 3) && blastFlag == 2) && 4352 <= s__state) || (((blastFlag <= 4 && 4400 == s__state) && s__s3__tmp__next_state___0 <= 4560) && s__hit == 0)) || ((((s__state <= 4560 && 4560 <= s__s3__tmp__next_state___0) && s__s3__tmp__next_state___0 <= 4560) && 4560 <= s__state) && s__hit == 0)) || (((s__state <= 4560 && !(s__hit == 0)) && blastFlag == 2) && 4560 <= s__state)) || ((((s__state <= 4352 && 4560 <= s__s3__tmp__next_state___0) && 4352 <= s__state) && s__s3__tmp__next_state___0 <= 4560) && s__hit == 0)) || ((blastFlag <= 4 && s__state == 4416) && s__hit == 0)) || (blastFlag == 1 && s__state == 4384)) || ((blastFlag == 2 && s__state <= 3) && s__hit == 0)) || ((s__state <= 4528 && 4512 <= s__state) && blastFlag == 2)) || (s__state <= 3 && s__s3__tmp__next_state___0 <= 4560)) || (((s__state <= 4528 && 4432 <= s__state) && blastFlag <= 4) && s__hit == 0)) || (blastFlag == 0 && s__state == 4368)) || ((blastFlag == 2 && 4400 == s__state) && s__hit == 0) - InvariantResult [Line: 136]: Loop Invariant Derived loop invariant: ((blastFlag <= 4 && s__state <= 4432) && 4352 <= s__state) && s__hit == 0 - InvariantResult [Line: 190]: Loop Invariant Derived loop invariant: ((((s__state <= 4560 && 4560 <= s__s3__tmp__next_state___0) && s__s3__tmp__next_state___0 <= 4560) && 4560 <= s__state) && s__hit == 0) || (((s__state <= 4560 && !(s__hit == 0)) && blastFlag == 2) && 4560 <= s__state) - InvariantResult [Line: 148]: Loop Invariant Derived loop invariant: ((4432 <= s__state && blastFlag <= 4) && s__state <= 4464) && s__hit == 0 - InvariantResult [Line: 154]: Loop Invariant Derived loop invariant: ((4432 <= s__state && blastFlag <= 4) && s__state <= 4480) && s__hit == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 128 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 16.6s, OverallIterations: 27, TraceHistogramMax: 22, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4907 SDtfs, 2135 SDslu, 2647 SDs, 0 SdLazy, 2485 SolverSat, 611 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2468 GetRequests, 2431 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5789occurred in iteration=23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 27 MinimizatonAttempts, 4017 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 22 LocationsWithAnnotation, 22 PreInvPairs, 155 NumberOfFragments, 425 HoareAnnotationTreeSize, 22 FomulaSimplifications, 9035 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 22 FomulaSimplificationsInter, 2018 FormulaSimplificationTreeSizeReductionInter, 1.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 8796 NumberOfCodeBlocks, 8796 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 8764 ConstructedInterpolants, 0 QuantifiedInterpolants, 4603118 SizeOfPredicates, 3 NumberOfNonLiveVariables, 4093 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 32 InterpolantComputations, 24 PerfectInterpolantSequences, 39205/39291 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...