./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-simple/sll2c_update_all_reverse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-simple/sll2c_update_all_reverse.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f6bad48b4609958b21373d95937ae7f736890e97 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 07:28:53,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 07:28:53,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 07:28:53,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 07:28:53,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 07:28:53,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 07:28:53,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 07:28:53,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 07:28:53,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 07:28:53,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 07:28:53,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 07:28:53,958 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 07:28:53,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 07:28:53,961 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 07:28:53,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 07:28:53,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 07:28:53,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 07:28:53,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 07:28:53,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 07:28:53,974 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 07:28:53,976 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 07:28:53,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 07:28:53,979 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 07:28:53,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 07:28:53,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 07:28:53,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 07:28:53,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 07:28:53,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 07:28:53,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 07:28:53,989 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 07:28:53,989 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 07:28:53,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 07:28:53,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 07:28:53,992 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 07:28:53,993 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 07:28:53,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 07:28:53,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 07:28:53,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 07:28:53,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 07:28:53,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 07:28:53,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 07:28:53,997 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 07:28:54,033 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 07:28:54,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 07:28:54,035 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 07:28:54,035 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 07:28:54,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 07:28:54,037 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 07:28:54,037 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 07:28:54,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 07:28:54,038 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 07:28:54,038 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 07:28:54,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 07:28:54,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 07:28:54,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 07:28:54,039 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 07:28:54,039 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 07:28:54,039 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 07:28:54,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 07:28:54,040 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 07:28:54,040 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 07:28:54,040 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 07:28:54,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 07:28:54,041 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 07:28:54,041 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 07:28:54,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 07:28:54,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 07:28:54,041 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 07:28:54,041 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 07:28:54,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 07:28:54,042 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 07:28:54,042 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6bad48b4609958b21373d95937ae7f736890e97 [2021-08-27 07:28:54,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 07:28:54,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 07:28:54,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 07:28:54,365 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 07:28:54,366 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 07:28:54,367 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/sll2c_update_all_reverse.i [2021-08-27 07:28:54,430 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a207f557a/1d89d360a9ea4a3c9948f41857dcee24/FLAGdfd23ee0a [2021-08-27 07:28:54,941 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 07:28:54,942 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/sll2c_update_all_reverse.i [2021-08-27 07:28:54,955 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a207f557a/1d89d360a9ea4a3c9948f41857dcee24/FLAGdfd23ee0a [2021-08-27 07:28:55,260 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a207f557a/1d89d360a9ea4a3c9948f41857dcee24 [2021-08-27 07:28:55,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 07:28:55,263 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 07:28:55,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 07:28:55,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 07:28:55,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 07:28:55,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:28:55" (1/1) ... [2021-08-27 07:28:55,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51f3f93d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:28:55, skipping insertion in model container [2021-08-27 07:28:55,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:28:55" (1/1) ... [2021-08-27 07:28:55,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 07:28:55,307 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 07:28:55,553 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/sll2c_update_all_reverse.i[24436,24449] [2021-08-27 07:28:55,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 07:28:55,562 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 07:28:55,608 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/sll2c_update_all_reverse.i[24436,24449] [2021-08-27 07:28:55,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 07:28:55,643 INFO L208 MainTranslator]: Completed translation [2021-08-27 07:28:55,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:28:55 WrapperNode [2021-08-27 07:28:55,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 07:28:55,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 07:28:55,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 07:28:55,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 07:28:55,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:28:55" (1/1) ... [2021-08-27 07:28:55,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:28:55" (1/1) ... [2021-08-27 07:28:55,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:28:55" (1/1) ... [2021-08-27 07:28:55,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:28:55" (1/1) ... [2021-08-27 07:28:55,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:28:55" (1/1) ... [2021-08-27 07:28:55,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:28:55" (1/1) ... [2021-08-27 07:28:55,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:28:55" (1/1) ... [2021-08-27 07:28:55,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 07:28:55,697 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 07:28:55,697 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 07:28:55,697 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 07:28:55,698 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:28:55" (1/1) ... [2021-08-27 07:28:55,704 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 07:28:55,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:28:55,722 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-27 07:28:55,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-27 07:28:55,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 07:28:55,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 07:28:55,766 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-27 07:28:55,766 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 07:28:55,766 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 07:28:55,767 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-08-27 07:28:55,767 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2021-08-27 07:28:55,767 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2021-08-27 07:28:55,767 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_destroy [2021-08-27 07:28:55,768 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_get_data_at [2021-08-27 07:28:55,768 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_update_at [2021-08-27 07:28:55,768 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 07:28:55,769 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 07:28:55,769 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-27 07:28:55,769 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-27 07:28:55,769 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-27 07:28:55,769 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-27 07:28:55,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 07:28:55,770 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 07:28:55,770 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 07:28:55,770 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 07:28:55,770 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 07:28:55,770 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 07:28:55,770 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 07:28:55,770 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 07:28:55,771 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 07:28:55,771 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 07:28:55,771 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 07:28:55,771 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 07:28:55,771 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 07:28:55,772 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 07:28:55,772 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 07:28:55,772 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 07:28:55,772 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 07:28:55,772 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 07:28:55,772 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 07:28:55,772 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 07:28:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 07:28:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 07:28:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 07:28:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 07:28:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 07:28:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 07:28:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 07:28:55,774 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 07:28:55,774 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 07:28:55,774 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 07:28:55,775 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 07:28:55,775 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 07:28:55,775 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 07:28:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 07:28:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 07:28:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 07:28:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 07:28:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 07:28:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 07:28:55,777 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 07:28:55,777 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 07:28:55,777 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 07:28:55,777 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 07:28:55,777 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 07:28:55,777 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 07:28:55,778 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 07:28:55,778 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 07:28:55,778 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 07:28:55,778 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 07:28:55,779 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 07:28:55,779 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 07:28:55,780 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 07:28:55,780 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 07:28:55,780 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 07:28:55,780 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 07:28:55,780 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 07:28:55,781 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 07:28:55,781 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-08-27 07:28:55,781 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 07:28:55,781 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 07:28:55,781 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 07:28:55,781 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 07:28:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 07:28:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 07:28:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 07:28:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 07:28:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 07:28:55,783 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 07:28:55,783 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 07:28:55,783 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 07:28:55,783 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 07:28:55,783 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 07:28:55,783 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 07:28:55,783 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 07:28:55,784 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 07:28:55,784 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 07:28:55,784 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 07:28:55,784 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 07:28:55,784 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 07:28:55,784 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 07:28:55,784 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 07:28:55,785 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 07:28:55,785 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 07:28:55,785 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 07:28:55,785 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 07:28:55,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 07:28:55,785 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 07:28:55,785 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 07:28:55,786 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 07:28:55,786 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 07:28:55,787 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 07:28:55,787 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 07:28:55,787 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 07:28:55,788 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 07:28:55,788 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 07:28:55,788 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 07:28:55,788 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 07:28:55,788 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 07:28:55,788 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 07:28:55,788 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 07:28:55,789 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 07:28:55,789 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 07:28:55,789 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 07:28:55,789 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 07:28:55,789 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 07:28:55,789 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-08-27 07:28:55,790 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2021-08-27 07:28:55,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 07:28:55,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 07:28:55,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 07:28:55,791 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2021-08-27 07:28:55,793 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_destroy [2021-08-27 07:28:55,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 07:28:55,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 07:28:55,794 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_get_data_at [2021-08-27 07:28:55,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 07:28:55,795 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_update_at [2021-08-27 07:28:55,795 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 07:28:55,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 07:28:55,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 07:28:55,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 07:28:56,145 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-08-27 07:28:56,385 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 07:28:56,386 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-08-27 07:28:56,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:28:56 BoogieIcfgContainer [2021-08-27 07:28:56,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 07:28:56,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 07:28:56,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 07:28:56,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 07:28:56,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 07:28:55" (1/3) ... [2021-08-27 07:28:56,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@365e783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:28:56, skipping insertion in model container [2021-08-27 07:28:56,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:28:55" (2/3) ... [2021-08-27 07:28:56,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@365e783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:28:56, skipping insertion in model container [2021-08-27 07:28:56,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:28:56" (3/3) ... [2021-08-27 07:28:56,394 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2c_update_all_reverse.i [2021-08-27 07:28:56,398 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 07:28:56,398 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2021-08-27 07:28:56,443 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 07:28:56,447 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-27 07:28:56,448 INFO L340 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2021-08-27 07:28:56,465 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 59 states have (on average 1.728813559322034) internal successors, (102), 87 states have internal predecessors, (102), 9 states have call successors, (9), 8 states have call predecessors, (9), 7 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-08-27 07:28:56,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-27 07:28:56,471 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:28:56,471 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:28:56,472 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting node_createErr0REQUIRES_VIOLATION === [node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION (and 24 more)] === [2021-08-27 07:28:56,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:28:56,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1445934727, now seen corresponding path program 1 times [2021-08-27 07:28:56,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:28:56,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023247257] [2021-08-27 07:28:56,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:28:56,488 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:28:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:28:56,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:28:56,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:28:56,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:28:56,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:28:56,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023247257] [2021-08-27 07:28:56,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023247257] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:28:56,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:28:56,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 07:28:56,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804229616] [2021-08-27 07:28:56,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 07:28:56,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:28:56,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 07:28:56,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 07:28:56,766 INFO L87 Difference]: Start difference. First operand has 104 states, 59 states have (on average 1.728813559322034) internal successors, (102), 87 states have internal predecessors, (102), 9 states have call successors, (9), 8 states have call predecessors, (9), 7 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:28:57,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:28:57,059 INFO L93 Difference]: Finished difference Result 121 states and 130 transitions. [2021-08-27 07:28:57,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 07:28:57,069 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-08-27 07:28:57,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:28:57,077 INFO L225 Difference]: With dead ends: 121 [2021-08-27 07:28:57,078 INFO L226 Difference]: Without dead ends: 115 [2021-08-27 07:28:57,079 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.9ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 07:28:57,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-08-27 07:28:57,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 96. [2021-08-27 07:28:57,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 56 states have (on average 1.5714285714285714) internal successors, (88), 81 states have internal predecessors, (88), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-27 07:28:57,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions. [2021-08-27 07:28:57,123 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 12 [2021-08-27 07:28:57,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:28:57,123 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 103 transitions. [2021-08-27 07:28:57,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:28:57,124 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 103 transitions. [2021-08-27 07:28:57,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-27 07:28:57,124 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:28:57,124 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:28:57,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 07:28:57,125 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting node_createErr1REQUIRES_VIOLATION === [node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION (and 24 more)] === [2021-08-27 07:28:57,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:28:57,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1445934728, now seen corresponding path program 1 times [2021-08-27 07:28:57,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:28:57,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254336967] [2021-08-27 07:28:57,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:28:57,126 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:28:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:28:57,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:28:57,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:28:57,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:28:57,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:28:57,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254336967] [2021-08-27 07:28:57,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254336967] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:28:57,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:28:57,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 07:28:57,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786473305] [2021-08-27 07:28:57,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 07:28:57,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:28:57,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 07:28:57,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 07:28:57,254 INFO L87 Difference]: Start difference. First operand 96 states and 103 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:28:57,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:28:57,469 INFO L93 Difference]: Finished difference Result 113 states and 121 transitions. [2021-08-27 07:28:57,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 07:28:57,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-08-27 07:28:57,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:28:57,475 INFO L225 Difference]: With dead ends: 113 [2021-08-27 07:28:57,475 INFO L226 Difference]: Without dead ends: 113 [2021-08-27 07:28:57,476 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.8ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 07:28:57,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-08-27 07:28:57,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 94. [2021-08-27 07:28:57,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 56 states have (on average 1.5357142857142858) internal successors, (86), 79 states have internal predecessors, (86), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-27 07:28:57,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 101 transitions. [2021-08-27 07:28:57,485 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 101 transitions. Word has length 12 [2021-08-27 07:28:57,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:28:57,485 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 101 transitions. [2021-08-27 07:28:57,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:28:57,486 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 101 transitions. [2021-08-27 07:28:57,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-27 07:28:57,486 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:28:57,486 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:28:57,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 07:28:57,487 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting sll_circular_createErr2REQUIRES_VIOLATION === [node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION (and 24 more)] === [2021-08-27 07:28:57,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:28:57,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1652501893, now seen corresponding path program 1 times [2021-08-27 07:28:57,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:28:57,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583110194] [2021-08-27 07:28:57,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:28:57,488 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:28:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:28:57,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:28:57,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:28:57,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-27 07:28:57,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:28:57,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:28:57,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:28:57,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583110194] [2021-08-27 07:28:57,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583110194] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:28:57,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:28:57,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-27 07:28:57,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551320586] [2021-08-27 07:28:57,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 07:28:57,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:28:57,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 07:28:57,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-27 07:28:57,612 INFO L87 Difference]: Start difference. First operand 94 states and 101 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 07:28:58,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:28:58,055 INFO L93 Difference]: Finished difference Result 120 states and 129 transitions. [2021-08-27 07:28:58,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 07:28:58,056 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2021-08-27 07:28:58,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:28:58,057 INFO L225 Difference]: With dead ends: 120 [2021-08-27 07:28:58,057 INFO L226 Difference]: Without dead ends: 120 [2021-08-27 07:28:58,058 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 164.7ms TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-08-27 07:28:58,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-08-27 07:28:58,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 95. [2021-08-27 07:28:58,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 57 states have (on average 1.5263157894736843) internal successors, (87), 80 states have internal predecessors, (87), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-27 07:28:58,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 102 transitions. [2021-08-27 07:28:58,065 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 102 transitions. Word has length 19 [2021-08-27 07:28:58,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:28:58,066 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 102 transitions. [2021-08-27 07:28:58,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 07:28:58,066 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 102 transitions. [2021-08-27 07:28:58,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-27 07:28:58,067 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:28:58,067 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:28:58,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 07:28:58,067 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting sll_circular_createErr0REQUIRES_VIOLATION === [node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION (and 24 more)] === [2021-08-27 07:28:58,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:28:58,068 INFO L82 PathProgramCache]: Analyzing trace with hash 173693975, now seen corresponding path program 1 times [2021-08-27 07:28:58,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:28:58,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871341218] [2021-08-27 07:28:58,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:28:58,069 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:28:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:28:58,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:28:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:28:58,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-27 07:28:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:28:58,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-27 07:28:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:28:58,189 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 07:28:58,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:28:58,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871341218] [2021-08-27 07:28:58,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871341218] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:28:58,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:28:58,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-27 07:28:58,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711494283] [2021-08-27 07:28:58,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 07:28:58,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:28:58,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 07:28:58,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-27 07:28:58,192 INFO L87 Difference]: Start difference. First operand 95 states and 102 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 07:28:58,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:28:58,540 INFO L93 Difference]: Finished difference Result 114 states and 123 transitions. [2021-08-27 07:28:58,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 07:28:58,540 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2021-08-27 07:28:58,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:28:58,542 INFO L225 Difference]: With dead ends: 114 [2021-08-27 07:28:58,542 INFO L226 Difference]: Without dead ends: 114 [2021-08-27 07:28:58,543 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 93.2ms TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-08-27 07:28:58,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-08-27 07:28:58,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 94. [2021-08-27 07:28:58,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 57 states have (on average 1.5087719298245614) internal successors, (86), 79 states have internal predecessors, (86), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-27 07:28:58,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 101 transitions. [2021-08-27 07:28:58,562 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 101 transitions. Word has length 28 [2021-08-27 07:28:58,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:28:58,562 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 101 transitions. [2021-08-27 07:28:58,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 07:28:58,562 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 101 transitions. [2021-08-27 07:28:58,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-27 07:28:58,563 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:28:58,563 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:28:58,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-27 07:28:58,564 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting sll_circular_createErr1REQUIRES_VIOLATION === [node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION (and 24 more)] === [2021-08-27 07:28:58,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:28:58,564 INFO L82 PathProgramCache]: Analyzing trace with hash 173693976, now seen corresponding path program 1 times [2021-08-27 07:28:58,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:28:58,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949662993] [2021-08-27 07:28:58,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:28:58,565 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:28:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:28:58,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:28:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:28:58,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-27 07:28:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:28:58,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-27 07:28:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:28:58,756 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 07:28:58,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:28:58,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949662993] [2021-08-27 07:28:58,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949662993] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:28:58,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:28:58,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-27 07:28:58,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780677499] [2021-08-27 07:28:58,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 07:28:58,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:28:58,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 07:28:58,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-27 07:28:58,759 INFO L87 Difference]: Start difference. First operand 94 states and 101 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 07:28:59,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:28:59,147 INFO L93 Difference]: Finished difference Result 113 states and 122 transitions. [2021-08-27 07:28:59,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 07:28:59,147 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2021-08-27 07:28:59,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:28:59,148 INFO L225 Difference]: With dead ends: 113 [2021-08-27 07:28:59,148 INFO L226 Difference]: Without dead ends: 113 [2021-08-27 07:28:59,149 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 106.7ms TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-08-27 07:28:59,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-08-27 07:28:59,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 93. [2021-08-27 07:28:59,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 57 states have (on average 1.4912280701754386) internal successors, (85), 78 states have internal predecessors, (85), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-27 07:28:59,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2021-08-27 07:28:59,153 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 28 [2021-08-27 07:28:59,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:28:59,153 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 100 transitions. [2021-08-27 07:28:59,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 07:28:59,153 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 100 transitions. [2021-08-27 07:28:59,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-27 07:28:59,154 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:28:59,154 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:28:59,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-27 07:28:59,154 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting sll_circular_createErr2REQUIRES_VIOLATION === [node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION (and 24 more)] === [2021-08-27 07:28:59,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:28:59,155 INFO L82 PathProgramCache]: Analyzing trace with hash -918257581, now seen corresponding path program 1 times [2021-08-27 07:28:59,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:28:59,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278562479] [2021-08-27 07:28:59,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:28:59,155 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:28:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:28:59,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:28:59,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:28:59,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-27 07:28:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:28:59,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-27 07:28:59,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:28:59,341 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 07:28:59,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:28:59,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278562479] [2021-08-27 07:28:59,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278562479] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:28:59,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005696164] [2021-08-27 07:28:59,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:28:59,342 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:28:59,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:28:59,344 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:28:59,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-27 07:28:59,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:28:59,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-27 07:28:59,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:28:59,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 07:28:59,841 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-27 07:28:59,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-27 07:28:59,994 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:28:59,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005696164] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:28:59,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:28:59,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2021-08-27 07:28:59,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20352476] [2021-08-27 07:28:59,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-27 07:28:59,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:28:59,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-27 07:28:59,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-08-27 07:28:59,997 INFO L87 Difference]: Start difference. First operand 93 states and 100 transitions. Second operand has 13 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 07:29:00,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:29:00,555 INFO L93 Difference]: Finished difference Result 112 states and 121 transitions. [2021-08-27 07:29:00,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 07:29:00,556 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 31 [2021-08-27 07:29:00,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:29:00,557 INFO L225 Difference]: With dead ends: 112 [2021-08-27 07:29:00,557 INFO L226 Difference]: Without dead ends: 112 [2021-08-27 07:29:00,557 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 229.3ms TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-08-27 07:29:00,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-08-27 07:29:00,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 92. [2021-08-27 07:29:00,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 57 states have (on average 1.4736842105263157) internal successors, (84), 77 states have internal predecessors, (84), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-27 07:29:00,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions. [2021-08-27 07:29:00,569 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 31 [2021-08-27 07:29:00,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:29:00,570 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 99 transitions. [2021-08-27 07:29:00,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 07:29:00,571 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions. [2021-08-27 07:29:00,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-27 07:29:00,572 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:29:00,572 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:29:00,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-27 07:29:00,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-08-27 07:29:00,789 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting sll_circular_createErr3REQUIRES_VIOLATION === [node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION (and 24 more)] === [2021-08-27 07:29:00,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:29:00,789 INFO L82 PathProgramCache]: Analyzing trace with hash -918257580, now seen corresponding path program 1 times [2021-08-27 07:29:00,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:29:00,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770735508] [2021-08-27 07:29:00,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:29:00,790 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:29:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:00,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:29:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:00,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-27 07:29:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:00,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-08-27 07:29:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:01,010 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 07:29:01,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:29:01,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770735508] [2021-08-27 07:29:01,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770735508] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:29:01,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30053508] [2021-08-27 07:29:01,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:29:01,012 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:29:01,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:29:01,013 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:29:01,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-27 07:29:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:01,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 28 conjunts are in the unsatisfiable core [2021-08-27 07:29:01,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:29:01,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 07:29:01,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 07:29:01,603 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 07:29:01,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 24 [2021-08-27 07:29:01,611 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 07:29:01,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-08-27 07:29:01,751 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:29:01,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30053508] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:29:01,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:29:01,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-08-27 07:29:01,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444920561] [2021-08-27 07:29:01,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-27 07:29:01,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:29:01,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-27 07:29:01,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-08-27 07:29:01,754 INFO L87 Difference]: Start difference. First operand 92 states and 99 transitions. Second operand has 17 states, 16 states have (on average 2.6875) internal successors, (43), 12 states have internal predecessors, (43), 3 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-27 07:29:02,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:29:02,466 INFO L93 Difference]: Finished difference Result 111 states and 120 transitions. [2021-08-27 07:29:02,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 07:29:02,467 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.6875) internal successors, (43), 12 states have internal predecessors, (43), 3 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 31 [2021-08-27 07:29:02,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:29:02,468 INFO L225 Difference]: With dead ends: 111 [2021-08-27 07:29:02,468 INFO L226 Difference]: Without dead ends: 111 [2021-08-27 07:29:02,468 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 330.1ms TimeCoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2021-08-27 07:29:02,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-08-27 07:29:02,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 91. [2021-08-27 07:29:02,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 57 states have (on average 1.456140350877193) internal successors, (83), 76 states have internal predecessors, (83), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-27 07:29:02,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 98 transitions. [2021-08-27 07:29:02,471 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 98 transitions. Word has length 31 [2021-08-27 07:29:02,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:29:02,472 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 98 transitions. [2021-08-27 07:29:02,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.6875) internal successors, (43), 12 states have internal predecessors, (43), 3 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-27 07:29:02,472 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 98 transitions. [2021-08-27 07:29:02,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-08-27 07:29:02,473 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:29:02,473 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:29:02,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-27 07:29:02,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-08-27 07:29:02,681 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting sll_circular_update_atErr2REQUIRES_VIOLATION === [node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION (and 24 more)] === [2021-08-27 07:29:02,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:29:02,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1835388011, now seen corresponding path program 1 times [2021-08-27 07:29:02,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:29:02,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998588707] [2021-08-27 07:29:02,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:29:02,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:29:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:02,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:29:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:02,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:29:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:02,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:29:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:02,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-08-27 07:29:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:02,884 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 07:29:02,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:29:02,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998588707] [2021-08-27 07:29:02,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998588707] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:29:02,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:29:02,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-08-27 07:29:02,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361167331] [2021-08-27 07:29:02,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-27 07:29:02,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:29:02,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-27 07:29:02,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-08-27 07:29:02,887 INFO L87 Difference]: Start difference. First operand 91 states and 98 transitions. Second operand has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-27 07:29:03,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:29:03,588 INFO L93 Difference]: Finished difference Result 119 states and 128 transitions. [2021-08-27 07:29:03,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-27 07:29:03,589 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 40 [2021-08-27 07:29:03,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:29:03,590 INFO L225 Difference]: With dead ends: 119 [2021-08-27 07:29:03,590 INFO L226 Difference]: Without dead ends: 119 [2021-08-27 07:29:03,593 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 236.2ms TimeCoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2021-08-27 07:29:03,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-08-27 07:29:03,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 94. [2021-08-27 07:29:03,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 60 states have (on average 1.4833333333333334) internal successors, (89), 79 states have internal predecessors, (89), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-27 07:29:03,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2021-08-27 07:29:03,597 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 40 [2021-08-27 07:29:03,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:29:03,597 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2021-08-27 07:29:03,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-27 07:29:03,600 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2021-08-27 07:29:03,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-08-27 07:29:03,606 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:29:03,606 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:29:03,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-27 07:29:03,608 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting sll_circular_update_atErr3REQUIRES_VIOLATION === [node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION (and 24 more)] === [2021-08-27 07:29:03,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:29:03,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1835388012, now seen corresponding path program 1 times [2021-08-27 07:29:03,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:29:03,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557696778] [2021-08-27 07:29:03,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:29:03,609 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:29:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:03,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:29:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:03,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:29:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:03,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:29:03,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:03,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-08-27 07:29:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:03,765 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-08-27 07:29:03,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:29:03,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557696778] [2021-08-27 07:29:03,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557696778] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:29:03,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:29:03,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-27 07:29:03,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461674817] [2021-08-27 07:29:03,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 07:29:03,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:29:03,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 07:29:03,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-08-27 07:29:03,768 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 07:29:04,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:29:04,209 INFO L93 Difference]: Finished difference Result 136 states and 150 transitions. [2021-08-27 07:29:04,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 07:29:04,210 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2021-08-27 07:29:04,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:29:04,211 INFO L225 Difference]: With dead ends: 136 [2021-08-27 07:29:04,211 INFO L226 Difference]: Without dead ends: 136 [2021-08-27 07:29:04,211 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 177.0ms TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-08-27 07:29:04,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-08-27 07:29:04,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 106. [2021-08-27 07:29:04,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 70 states have (on average 1.5) internal successors, (105), 90 states have internal predecessors, (105), 9 states have call successors, (9), 8 states have call predecessors, (9), 7 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-08-27 07:29:04,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 122 transitions. [2021-08-27 07:29:04,215 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 122 transitions. Word has length 40 [2021-08-27 07:29:04,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:29:04,215 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 122 transitions. [2021-08-27 07:29:04,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 07:29:04,215 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 122 transitions. [2021-08-27 07:29:04,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-08-27 07:29:04,216 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:29:04,216 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:29:04,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-27 07:29:04,216 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting sll_circular_update_atErr1REQUIRES_VIOLATION === [node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION (and 24 more)] === [2021-08-27 07:29:04,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:29:04,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1835388067, now seen corresponding path program 1 times [2021-08-27 07:29:04,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:29:04,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645622483] [2021-08-27 07:29:04,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:29:04,217 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:29:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:04,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:29:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:04,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:29:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:04,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:29:04,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:04,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-08-27 07:29:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:04,466 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 07:29:04,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:29:04,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645622483] [2021-08-27 07:29:04,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645622483] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:29:04,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:29:04,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-08-27 07:29:04,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061910889] [2021-08-27 07:29:04,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-27 07:29:04,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:29:04,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-27 07:29:04,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-08-27 07:29:04,468 INFO L87 Difference]: Start difference. First operand 106 states and 122 transitions. Second operand has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-27 07:29:05,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:29:05,301 INFO L93 Difference]: Finished difference Result 130 states and 145 transitions. [2021-08-27 07:29:05,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-27 07:29:05,302 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 40 [2021-08-27 07:29:05,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:29:05,305 INFO L225 Difference]: With dead ends: 130 [2021-08-27 07:29:05,306 INFO L226 Difference]: Without dead ends: 130 [2021-08-27 07:29:05,306 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 339.0ms TimeCoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2021-08-27 07:29:05,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-08-27 07:29:05,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 106. [2021-08-27 07:29:05,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 70 states have (on average 1.457142857142857) internal successors, (102), 90 states have internal predecessors, (102), 9 states have call successors, (9), 8 states have call predecessors, (9), 7 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-08-27 07:29:05,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 119 transitions. [2021-08-27 07:29:05,311 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 119 transitions. Word has length 40 [2021-08-27 07:29:05,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:29:05,312 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 119 transitions. [2021-08-27 07:29:05,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-27 07:29:05,312 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 119 transitions. [2021-08-27 07:29:05,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-08-27 07:29:05,313 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:29:05,313 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:29:05,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-27 07:29:05,314 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting sll_circular_update_atErr2REQUIRES_VIOLATION === [node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION (and 24 more)] === [2021-08-27 07:29:05,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:29:05,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1182712765, now seen corresponding path program 1 times [2021-08-27 07:29:05,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:29:05,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541421520] [2021-08-27 07:29:05,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:29:05,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:29:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:05,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:29:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:05,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:29:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:05,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:29:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:05,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-08-27 07:29:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:05,711 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 07:29:05,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:29:05,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541421520] [2021-08-27 07:29:05,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541421520] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:29:05,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213900005] [2021-08-27 07:29:05,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:29:05,712 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:29:05,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:29:05,717 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:29:05,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-27 07:29:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:05,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 62 conjunts are in the unsatisfiable core [2021-08-27 07:29:05,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:29:05,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 07:29:06,169 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 07:29:06,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-08-27 07:29:06,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-27 07:29:06,369 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-27 07:29:06,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 27 [2021-08-27 07:29:06,811 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-27 07:29:06,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 19 [2021-08-27 07:29:06,823 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:29:06,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213900005] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:29:06,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:29:06,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 34 [2021-08-27 07:29:06,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582840526] [2021-08-27 07:29:06,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-08-27 07:29:06,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:29:06,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-08-27 07:29:06,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1109, Unknown=0, NotChecked=0, Total=1190 [2021-08-27 07:29:06,826 INFO L87 Difference]: Start difference. First operand 106 states and 119 transitions. Second operand has 35 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 25 states have internal predecessors, (56), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2021-08-27 07:29:08,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:29:08,473 INFO L93 Difference]: Finished difference Result 155 states and 175 transitions. [2021-08-27 07:29:08,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-27 07:29:08,473 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 25 states have internal predecessors, (56), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) Word has length 43 [2021-08-27 07:29:08,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:29:08,476 INFO L225 Difference]: With dead ends: 155 [2021-08-27 07:29:08,477 INFO L226 Difference]: Without dead ends: 155 [2021-08-27 07:29:08,477 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 1136.5ms TimeCoverageRelationStatistics Valid=198, Invalid=2154, Unknown=0, NotChecked=0, Total=2352 [2021-08-27 07:29:08,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-08-27 07:29:08,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 125. [2021-08-27 07:29:08,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 86 states have (on average 1.4186046511627908) internal successors, (122), 106 states have internal predecessors, (122), 11 states have call successors, (11), 9 states have call predecessors, (11), 8 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) [2021-08-27 07:29:08,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 144 transitions. [2021-08-27 07:29:08,486 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 144 transitions. Word has length 43 [2021-08-27 07:29:08,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:29:08,486 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 144 transitions. [2021-08-27 07:29:08,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 25 states have internal predecessors, (56), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2021-08-27 07:29:08,487 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 144 transitions. [2021-08-27 07:29:08,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-08-27 07:29:08,489 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:29:08,489 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:29:08,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-27 07:29:08,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:29:08,705 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting sll_circular_update_atErr3REQUIRES_VIOLATION === [node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION (and 24 more)] === [2021-08-27 07:29:08,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:29:08,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1182712764, now seen corresponding path program 1 times [2021-08-27 07:29:08,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:29:08,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884107654] [2021-08-27 07:29:08,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:29:08,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:29:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:08,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:29:08,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:08,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:29:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:09,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:29:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:09,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-08-27 07:29:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:09,358 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 07:29:09,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:29:09,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884107654] [2021-08-27 07:29:09,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884107654] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:29:09,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115734363] [2021-08-27 07:29:09,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:29:09,359 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:29:09,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:29:09,365 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:29:09,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-27 07:29:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:09,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 73 conjunts are in the unsatisfiable core [2021-08-27 07:29:09,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:29:09,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 07:29:09,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 07:29:10,114 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 07:29:10,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-08-27 07:29:10,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-08-27 07:29:10,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-08-27 07:29:10,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-27 07:29:10,506 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-27 07:29:10,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 55 [2021-08-27 07:29:10,521 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-08-27 07:29:10,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 56 [2021-08-27 07:29:11,378 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-08-27 07:29:11,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 68 [2021-08-27 07:29:11,391 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-08-27 07:29:11,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 39 [2021-08-27 07:29:11,556 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:29:11,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115734363] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:29:11,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:29:11,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 41 [2021-08-27 07:29:11,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770365417] [2021-08-27 07:29:11,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-08-27 07:29:11,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:29:11,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-08-27 07:29:11,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1631, Unknown=0, NotChecked=0, Total=1722 [2021-08-27 07:29:11,558 INFO L87 Difference]: Start difference. First operand 125 states and 144 transitions. Second operand has 42 states, 41 states have (on average 1.5609756097560976) internal successors, (64), 31 states have internal predecessors, (64), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (7), 7 states have call predecessors, (7), 3 states have call successors, (7) [2021-08-27 07:29:15,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:29:15,012 INFO L93 Difference]: Finished difference Result 191 states and 223 transitions. [2021-08-27 07:29:15,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-27 07:29:15,012 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.5609756097560976) internal successors, (64), 31 states have internal predecessors, (64), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (7), 7 states have call predecessors, (7), 3 states have call successors, (7) Word has length 43 [2021-08-27 07:29:15,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:29:15,014 INFO L225 Difference]: With dead ends: 191 [2021-08-27 07:29:15,014 INFO L226 Difference]: Without dead ends: 191 [2021-08-27 07:29:15,016 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 2741.5ms TimeCoverageRelationStatistics Valid=242, Invalid=3418, Unknown=0, NotChecked=0, Total=3660 [2021-08-27 07:29:15,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-08-27 07:29:15,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 141. [2021-08-27 07:29:15,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 98 states have (on average 1.3979591836734695) internal successors, (137), 120 states have internal predecessors, (137), 12 states have call successors, (12), 10 states have call predecessors, (12), 11 states have return successors, (15), 10 states have call predecessors, (15), 11 states have call successors, (15) [2021-08-27 07:29:15,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 164 transitions. [2021-08-27 07:29:15,021 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 164 transitions. Word has length 43 [2021-08-27 07:29:15,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:29:15,021 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 164 transitions. [2021-08-27 07:29:15,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.5609756097560976) internal successors, (64), 31 states have internal predecessors, (64), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (7), 7 states have call predecessors, (7), 3 states have call successors, (7) [2021-08-27 07:29:15,021 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 164 transitions. [2021-08-27 07:29:15,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-27 07:29:15,021 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:29:15,022 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-08-27 07:29:15,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-08-27 07:29:15,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:29:15,237 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting sll_circular_update_atErr2REQUIRES_VIOLATION === [node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION (and 24 more)] === [2021-08-27 07:29:15,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:29:15,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1717411179, now seen corresponding path program 2 times [2021-08-27 07:29:15,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:29:15,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516127441] [2021-08-27 07:29:15,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:29:15,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:29:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:15,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:29:15,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:15,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:29:15,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:15,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:29:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:15,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-08-27 07:29:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:15,362 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-08-27 07:29:15,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:29:15,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516127441] [2021-08-27 07:29:15,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516127441] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:29:15,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:29:15,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-27 07:29:15,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076214671] [2021-08-27 07:29:15,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-27 07:29:15,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:29:15,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 07:29:15,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-08-27 07:29:15,364 INFO L87 Difference]: Start difference. First operand 141 states and 164 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 07:29:15,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:29:15,717 INFO L93 Difference]: Finished difference Result 155 states and 170 transitions. [2021-08-27 07:29:15,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 07:29:15,717 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2021-08-27 07:29:15,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:29:15,718 INFO L225 Difference]: With dead ends: 155 [2021-08-27 07:29:15,718 INFO L226 Difference]: Without dead ends: 155 [2021-08-27 07:29:15,719 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 170.6ms TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-08-27 07:29:15,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-08-27 07:29:15,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 136. [2021-08-27 07:29:15,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 95 states have (on average 1.3157894736842106) internal successors, (125), 115 states have internal predecessors, (125), 12 states have call successors, (12), 10 states have call predecessors, (12), 11 states have return successors, (13), 10 states have call predecessors, (13), 11 states have call successors, (13) [2021-08-27 07:29:15,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 150 transitions. [2021-08-27 07:29:15,723 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 150 transitions. Word has length 46 [2021-08-27 07:29:15,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:29:15,723 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 150 transitions. [2021-08-27 07:29:15,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 07:29:15,723 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 150 transitions. [2021-08-27 07:29:15,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-27 07:29:15,724 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:29:15,724 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:29:15,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-27 07:29:15,724 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting sll_circular_get_data_atErr2REQUIRES_VIOLATION === [node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION (and 24 more)] === [2021-08-27 07:29:15,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:29:15,725 INFO L82 PathProgramCache]: Analyzing trace with hash -227427244, now seen corresponding path program 1 times [2021-08-27 07:29:15,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:29:15,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057624578] [2021-08-27 07:29:15,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:29:15,725 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:29:15,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:15,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:29:15,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:15,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:29:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:15,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:29:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:15,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-08-27 07:29:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:15,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-08-27 07:29:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:15,938 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-08-27 07:29:15,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:29:15,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057624578] [2021-08-27 07:29:15,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057624578] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:29:15,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:29:15,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-08-27 07:29:15,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706704433] [2021-08-27 07:29:15,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-27 07:29:15,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:29:15,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-27 07:29:15,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2021-08-27 07:29:15,940 INFO L87 Difference]: Start difference. First operand 136 states and 150 transitions. Second operand has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 9 states have internal predecessors, (39), 2 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-08-27 07:29:16,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:29:16,533 INFO L93 Difference]: Finished difference Result 163 states and 178 transitions. [2021-08-27 07:29:16,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-27 07:29:16,533 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 9 states have internal predecessors, (39), 2 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 53 [2021-08-27 07:29:16,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:29:16,534 INFO L225 Difference]: With dead ends: 163 [2021-08-27 07:29:16,534 INFO L226 Difference]: Without dead ends: 163 [2021-08-27 07:29:16,534 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 230.6ms TimeCoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2021-08-27 07:29:16,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-08-27 07:29:16,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 139. [2021-08-27 07:29:16,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 98 states have (on average 1.336734693877551) internal successors, (131), 118 states have internal predecessors, (131), 12 states have call successors, (12), 10 states have call predecessors, (12), 11 states have return successors, (13), 10 states have call predecessors, (13), 11 states have call successors, (13) [2021-08-27 07:29:16,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 156 transitions. [2021-08-27 07:29:16,538 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 156 transitions. Word has length 53 [2021-08-27 07:29:16,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:29:16,539 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 156 transitions. [2021-08-27 07:29:16,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 9 states have internal predecessors, (39), 2 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-08-27 07:29:16,539 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 156 transitions. [2021-08-27 07:29:16,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-27 07:29:16,539 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:29:16,539 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:29:16,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-27 07:29:16,540 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting sll_circular_get_data_atErr3REQUIRES_VIOLATION === [node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION (and 24 more)] === [2021-08-27 07:29:16,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:29:16,540 INFO L82 PathProgramCache]: Analyzing trace with hash -227427243, now seen corresponding path program 1 times [2021-08-27 07:29:16,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:29:16,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534207512] [2021-08-27 07:29:16,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:29:16,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:29:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:16,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:29:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:16,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:29:16,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:16,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:29:16,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:16,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-08-27 07:29:16,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:16,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-08-27 07:29:16,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:16,649 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-08-27 07:29:16,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:29:16,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534207512] [2021-08-27 07:29:16,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534207512] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:29:16,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513465552] [2021-08-27 07:29:16,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:29:16,649 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:29:16,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:29:16,665 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:29:16,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-27 07:29:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:17,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 07:29:17,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:29:17,188 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-08-27 07:29:17,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513465552] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:29:17,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:29:17,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2021-08-27 07:29:17,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24286624] [2021-08-27 07:29:17,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-27 07:29:17,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:29:17,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-27 07:29:17,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-08-27 07:29:17,191 INFO L87 Difference]: Start difference. First operand 139 states and 156 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 8 states have internal predecessors, (44), 6 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-08-27 07:29:17,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:29:17,491 INFO L93 Difference]: Finished difference Result 169 states and 188 transitions. [2021-08-27 07:29:17,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 07:29:17,492 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 8 states have internal predecessors, (44), 6 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 53 [2021-08-27 07:29:17,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:29:17,493 INFO L225 Difference]: With dead ends: 169 [2021-08-27 07:29:17,493 INFO L226 Difference]: Without dead ends: 169 [2021-08-27 07:29:17,493 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 104.3ms TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-08-27 07:29:17,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-08-27 07:29:17,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 148. [2021-08-27 07:29:17,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 106 states have (on average 1.320754716981132) internal successors, (140), 124 states have internal predecessors, (140), 13 states have call successors, (13), 10 states have call predecessors, (13), 11 states have return successors, (14), 13 states have call predecessors, (14), 12 states have call successors, (14) [2021-08-27 07:29:17,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 167 transitions. [2021-08-27 07:29:17,501 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 167 transitions. Word has length 53 [2021-08-27 07:29:17,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:29:17,501 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 167 transitions. [2021-08-27 07:29:17,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 8 states have internal predecessors, (44), 6 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-08-27 07:29:17,502 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 167 transitions. [2021-08-27 07:29:17,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-08-27 07:29:17,502 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:29:17,504 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:29:17,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-27 07:29:17,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-08-27 07:29:17,709 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting sll_circular_update_atErr2REQUIRES_VIOLATION === [node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION (and 24 more)] === [2021-08-27 07:29:17,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:29:17,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1008365047, now seen corresponding path program 1 times [2021-08-27 07:29:17,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:29:17,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735790666] [2021-08-27 07:29:17,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:29:17,710 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:29:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:17,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:29:17,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:17,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:29:17,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:17,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:29:17,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:17,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-08-27 07:29:17,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:17,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-08-27 07:29:17,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:17,874 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-08-27 07:29:17,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:29:17,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735790666] [2021-08-27 07:29:17,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735790666] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:29:17,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151549802] [2021-08-27 07:29:17,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:29:17,874 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:29:17,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:29:17,875 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:29:17,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-27 07:29:18,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:18,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 07:29:18,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:29:18,390 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-08-27 07:29:18,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151549802] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:29:18,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 07:29:18,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 13 [2021-08-27 07:29:18,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928240729] [2021-08-27 07:29:18,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 07:29:18,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:29:18,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 07:29:18,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-08-27 07:29:18,392 INFO L87 Difference]: Start difference. First operand 148 states and 167 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-27 07:29:18,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:29:18,461 INFO L93 Difference]: Finished difference Result 138 states and 150 transitions. [2021-08-27 07:29:18,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 07:29:18,462 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 54 [2021-08-27 07:29:18,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:29:18,463 INFO L225 Difference]: With dead ends: 138 [2021-08-27 07:29:18,463 INFO L226 Difference]: Without dead ends: 138 [2021-08-27 07:29:18,464 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 102.0ms TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-08-27 07:29:18,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-08-27 07:29:18,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 128. [2021-08-27 07:29:18,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 89 states have (on average 1.3146067415730338) internal successors, (117), 107 states have internal predecessors, (117), 12 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2021-08-27 07:29:18,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 141 transitions. [2021-08-27 07:29:18,467 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 141 transitions. Word has length 54 [2021-08-27 07:29:18,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:29:18,468 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 141 transitions. [2021-08-27 07:29:18,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-27 07:29:18,468 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 141 transitions. [2021-08-27 07:29:18,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-27 07:29:18,469 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:29:18,469 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-08-27 07:29:18,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-27 07:29:18,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-08-27 07:29:18,677 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting sll_circular_update_atErr2REQUIRES_VIOLATION === [node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION (and 24 more)] === [2021-08-27 07:29:18,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:29:18,677 INFO L82 PathProgramCache]: Analyzing trace with hash 953058577, now seen corresponding path program 3 times [2021-08-27 07:29:18,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:29:18,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035766306] [2021-08-27 07:29:18,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:29:18,678 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:29:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:18,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:29:18,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:18,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:29:18,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:18,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:29:18,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:18,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-08-27 07:29:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:18,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-08-27 07:29:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:18,794 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-08-27 07:29:18,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:29:18,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035766306] [2021-08-27 07:29:18,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035766306] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:29:18,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825581466] [2021-08-27 07:29:18,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 07:29:18,795 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:29:18,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:29:18,797 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:29:18,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-27 07:29:19,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-27 07:29:19,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:29:19,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 07:29:19,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:29:19,369 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-08-27 07:29:19,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825581466] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:29:19,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:29:19,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 10 [2021-08-27 07:29:19,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635793578] [2021-08-27 07:29:19,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-27 07:29:19,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:29:19,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 07:29:19,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-08-27 07:29:19,371 INFO L87 Difference]: Start difference. First operand 128 states and 141 transitions. Second operand has 10 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 7 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (8), 5 states have call predecessors, (8), 6 states have call successors, (8) [2021-08-27 07:29:19,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:29:19,686 INFO L93 Difference]: Finished difference Result 134 states and 147 transitions. [2021-08-27 07:29:19,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 07:29:19,686 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 7 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (8), 5 states have call predecessors, (8), 6 states have call successors, (8) Word has length 55 [2021-08-27 07:29:19,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:29:19,687 INFO L225 Difference]: With dead ends: 134 [2021-08-27 07:29:19,687 INFO L226 Difference]: Without dead ends: 125 [2021-08-27 07:29:19,687 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 123.6ms TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-08-27 07:29:19,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-08-27 07:29:19,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 106. [2021-08-27 07:29:19,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 73 states have (on average 1.3287671232876712) internal successors, (97), 88 states have internal predecessors, (97), 10 states have call successors, (10), 8 states have call predecessors, (10), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-27 07:29:19,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 116 transitions. [2021-08-27 07:29:19,692 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 116 transitions. Word has length 55 [2021-08-27 07:29:19,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:29:19,692 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 116 transitions. [2021-08-27 07:29:19,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 7 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (8), 5 states have call predecessors, (8), 6 states have call successors, (8) [2021-08-27 07:29:19,692 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 116 transitions. [2021-08-27 07:29:19,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-08-27 07:29:19,693 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:29:19,693 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-08-27 07:29:19,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-27 07:29:19,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:29:19,909 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting sll_circular_get_data_atErr3REQUIRES_VIOLATION === [node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION (and 24 more)] === [2021-08-27 07:29:19,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:29:19,909 INFO L82 PathProgramCache]: Analyzing trace with hash 886011465, now seen corresponding path program 2 times [2021-08-27 07:29:19,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:29:19,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924781111] [2021-08-27 07:29:19,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:29:19,909 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:29:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:19,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:29:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:20,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:29:20,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:20,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:29:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:20,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-08-27 07:29:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:20,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-08-27 07:29:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:20,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-08-27 07:29:20,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:20,048 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-08-27 07:29:20,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:29:20,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924781111] [2021-08-27 07:29:20,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924781111] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:29:20,049 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:29:20,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-27 07:29:20,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792390237] [2021-08-27 07:29:20,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-27 07:29:20,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:29:20,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 07:29:20,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-08-27 07:29:20,051 INFO L87 Difference]: Start difference. First operand 106 states and 116 transitions. Second operand has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-08-27 07:29:20,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:29:20,425 INFO L93 Difference]: Finished difference Result 141 states and 152 transitions. [2021-08-27 07:29:20,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 07:29:20,426 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2021-08-27 07:29:20,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:29:20,426 INFO L225 Difference]: With dead ends: 141 [2021-08-27 07:29:20,427 INFO L226 Difference]: Without dead ends: 141 [2021-08-27 07:29:20,427 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 167.4ms TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-08-27 07:29:20,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-08-27 07:29:20,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 116. [2021-08-27 07:29:20,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 82 states have (on average 1.3658536585365855) internal successors, (112), 97 states have internal predecessors, (112), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-27 07:29:20,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 131 transitions. [2021-08-27 07:29:20,431 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 131 transitions. Word has length 61 [2021-08-27 07:29:20,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:29:20,431 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 131 transitions. [2021-08-27 07:29:20,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-08-27 07:29:20,431 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 131 transitions. [2021-08-27 07:29:20,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-08-27 07:29:20,432 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:29:20,432 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-08-27 07:29:20,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-27 07:29:20,432 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting sll_circular_get_data_atErr1REQUIRES_VIOLATION === [node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION (and 24 more)] === [2021-08-27 07:29:20,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:29:20,433 INFO L82 PathProgramCache]: Analyzing trace with hash 886011520, now seen corresponding path program 1 times [2021-08-27 07:29:20,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:29:20,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614407658] [2021-08-27 07:29:20,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:29:20,433 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:29:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:20,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:29:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:20,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:29:20,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:20,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:29:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:20,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-08-27 07:29:20,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:20,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-08-27 07:29:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:20,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-08-27 07:29:20,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:20,676 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-08-27 07:29:20,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:29:20,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614407658] [2021-08-27 07:29:20,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614407658] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:29:20,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:29:20,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-08-27 07:29:20,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535462025] [2021-08-27 07:29:20,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-27 07:29:20,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:29:20,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-27 07:29:20,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2021-08-27 07:29:20,678 INFO L87 Difference]: Start difference. First operand 116 states and 131 transitions. Second operand has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 9 states have internal predecessors, (41), 2 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-08-27 07:29:21,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:29:21,338 INFO L93 Difference]: Finished difference Result 140 states and 153 transitions. [2021-08-27 07:29:21,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-27 07:29:21,338 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 9 states have internal predecessors, (41), 2 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2021-08-27 07:29:21,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:29:21,339 INFO L225 Difference]: With dead ends: 140 [2021-08-27 07:29:21,339 INFO L226 Difference]: Without dead ends: 140 [2021-08-27 07:29:21,340 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 277.2ms TimeCoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2021-08-27 07:29:21,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-08-27 07:29:21,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 116. [2021-08-27 07:29:21,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 82 states have (on average 1.329268292682927) internal successors, (109), 97 states have internal predecessors, (109), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-27 07:29:21,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 128 transitions. [2021-08-27 07:29:21,343 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 128 transitions. Word has length 61 [2021-08-27 07:29:21,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:29:21,344 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 128 transitions. [2021-08-27 07:29:21,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 9 states have internal predecessors, (41), 2 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-08-27 07:29:21,344 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 128 transitions. [2021-08-27 07:29:21,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-08-27 07:29:21,344 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:29:21,345 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-08-27 07:29:21,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-27 07:29:21,345 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting sll_circular_get_data_atErr2REQUIRES_VIOLATION === [node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION (and 24 more)] === [2021-08-27 07:29:21,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:29:21,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1699691905, now seen corresponding path program 1 times [2021-08-27 07:29:21,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:29:21,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528261457] [2021-08-27 07:29:21,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:29:21,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:29:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:21,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:29:21,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:21,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:29:21,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:21,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:29:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:21,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-08-27 07:29:21,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:21,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-08-27 07:29:21,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:21,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-08-27 07:29:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:22,058 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 07:29:22,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:29:22,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528261457] [2021-08-27 07:29:22,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528261457] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:29:22,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018080290] [2021-08-27 07:29:22,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:29:22,060 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:29:22,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:29:22,065 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:29:22,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-27 07:29:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:29:22,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 84 conjunts are in the unsatisfiable core [2021-08-27 07:29:22,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:29:22,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 07:29:22,696 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 07:29:22,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-08-27 07:29:22,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-27 07:29:22,844 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-27 07:29:22,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 62 [2021-08-27 07:29:23,196 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-27 07:29:23,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 16 [2021-08-27 07:29:38,329 INFO L354 Elim1Store]: treesize reduction 127, result has 15.9 percent of original size [2021-08-27 07:29:38,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 57 [2021-08-27 07:29:38,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-08-27 07:29:49,989 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-08-27 07:29:49,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2021-08-27 07:29:51,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-08-27 07:29:51,777 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 15 refuted. 2 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 07:29:51,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018080290] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:29:51,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:29:51,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 43 [2021-08-27 07:29:51,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446716431] [2021-08-27 07:29:51,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-08-27 07:29:51,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:29:51,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-08-27 07:29:51,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1725, Unknown=40, NotChecked=0, Total=1892 [2021-08-27 07:29:51,780 INFO L87 Difference]: Start difference. First operand 116 states and 128 transitions. Second operand has 44 states, 43 states have (on average 1.813953488372093) internal successors, (78), 33 states have internal predecessors, (78), 6 states have call successors, (15), 8 states have call predecessors, (15), 9 states have return successors, (9), 8 states have call predecessors, (9), 5 states have call successors, (9) [2021-08-27 07:30:34,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:30:34,001 INFO L93 Difference]: Finished difference Result 152 states and 168 transitions. [2021-08-27 07:30:34,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-08-27 07:30:34,001 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 1.813953488372093) internal successors, (78), 33 states have internal predecessors, (78), 6 states have call successors, (15), 8 states have call predecessors, (15), 9 states have return successors, (9), 8 states have call predecessors, (9), 5 states have call successors, (9) Word has length 64 [2021-08-27 07:30:34,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:30:34,002 INFO L225 Difference]: With dead ends: 152 [2021-08-27 07:30:34,002 INFO L226 Difference]: Without dead ends: 152 [2021-08-27 07:30:34,003 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 50 SyntacticMatches, 8 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 620 ImplicationChecksByTransitivity, 36029.4ms TimeCoverageRelationStatistics Valid=385, Invalid=3729, Unknown=46, NotChecked=0, Total=4160 [2021-08-27 07:30:34,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-08-27 07:30:34,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 124. [2021-08-27 07:30:34,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 90 states have (on average 1.3666666666666667) internal successors, (123), 105 states have internal predecessors, (123), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-27 07:30:34,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 142 transitions. [2021-08-27 07:30:34,007 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 142 transitions. Word has length 64 [2021-08-27 07:30:34,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:30:34,007 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 142 transitions. [2021-08-27 07:30:34,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 1.813953488372093) internal successors, (78), 33 states have internal predecessors, (78), 6 states have call successors, (15), 8 states have call predecessors, (15), 9 states have return successors, (9), 8 states have call predecessors, (9), 5 states have call successors, (9) [2021-08-27 07:30:34,008 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 142 transitions. [2021-08-27 07:30:34,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-08-27 07:30:34,008 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:30:34,008 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-08-27 07:30:34,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-08-27 07:30:34,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:30:34,209 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting sll_circular_get_data_atErr3REQUIRES_VIOLATION === [node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION (and 24 more)] === [2021-08-27 07:30:34,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:30:34,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1699691904, now seen corresponding path program 1 times [2021-08-27 07:30:34,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:30:34,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124433782] [2021-08-27 07:30:34,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:30:34,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:30:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:30:34,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:30:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:30:34,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:30:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:30:34,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:30:34,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:30:34,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-08-27 07:30:34,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:30:34,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-08-27 07:30:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:30:35,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-08-27 07:30:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:30:35,300 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 07:30:35,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:30:35,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124433782] [2021-08-27 07:30:35,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124433782] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:30:35,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782260410] [2021-08-27 07:30:35,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:30:35,302 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:30:35,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:30:35,305 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:30:35,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-27 07:30:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:30:35,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 104 conjunts are in the unsatisfiable core [2021-08-27 07:30:35,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:30:35,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 07:30:35,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 07:30:36,282 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 07:30:36,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-08-27 07:30:36,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-08-27 07:30:36,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-27 07:30:36,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-08-27 07:30:36,719 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-27 07:30:36,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 55 [2021-08-27 07:30:36,734 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-08-27 07:30:36,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 56 [2021-08-27 07:30:37,315 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-27 07:30:37,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 45 [2021-08-27 07:30:37,324 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-27 07:30:37,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2021-08-27 07:30:45,748 INFO L354 Elim1Store]: treesize reduction 74, result has 22.1 percent of original size [2021-08-27 07:30:45,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 119 treesize of output 97 [2021-08-27 07:30:45,770 INFO L354 Elim1Store]: treesize reduction 90, result has 21.7 percent of original size [2021-08-27 07:30:45,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 94 treesize of output 71 [2021-08-27 07:30:45,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 29 [2021-08-27 07:30:45,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-08-27 07:30:50,561 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-08-27 07:30:50,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 53 [2021-08-27 07:30:50,575 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-08-27 07:30:50,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 34 [2021-08-27 07:30:50,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 39 [2021-08-27 07:30:50,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2021-08-27 07:30:51,012 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 07:30:51,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782260410] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:30:51,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:30:51,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 28] total 58 [2021-08-27 07:30:51,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510697471] [2021-08-27 07:30:51,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2021-08-27 07:30:51,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:30:51,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-08-27 07:30:51,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=3229, Unknown=8, NotChecked=0, Total=3422 [2021-08-27 07:30:51,014 INFO L87 Difference]: Start difference. First operand 124 states and 142 transitions. Second operand has 59 states, 58 states have (on average 1.6724137931034482) internal successors, (97), 46 states have internal predecessors, (97), 8 states have call successors, (15), 8 states have call predecessors, (15), 11 states have return successors, (11), 10 states have call predecessors, (11), 7 states have call successors, (11) [2021-08-27 07:30:56,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:30:56,410 INFO L93 Difference]: Finished difference Result 154 states and 169 transitions. [2021-08-27 07:30:56,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-27 07:30:56,411 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 1.6724137931034482) internal successors, (97), 46 states have internal predecessors, (97), 8 states have call successors, (15), 8 states have call predecessors, (15), 11 states have return successors, (11), 10 states have call predecessors, (11), 7 states have call successors, (11) Word has length 64 [2021-08-27 07:30:56,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:30:56,411 INFO L225 Difference]: With dead ends: 154 [2021-08-27 07:30:56,411 INFO L226 Difference]: Without dead ends: 154 [2021-08-27 07:30:56,413 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1177 ImplicationChecksByTransitivity, 18073.6ms TimeCoverageRelationStatistics Valid=460, Invalid=6174, Unknown=8, NotChecked=0, Total=6642 [2021-08-27 07:30:56,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-08-27 07:30:56,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 123. [2021-08-27 07:30:56,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 89 states have (on average 1.3258426966292134) internal successors, (118), 104 states have internal predecessors, (118), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-27 07:30:56,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 137 transitions. [2021-08-27 07:30:56,416 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 137 transitions. Word has length 64 [2021-08-27 07:30:56,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:30:56,417 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 137 transitions. [2021-08-27 07:30:56,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 1.6724137931034482) internal successors, (97), 46 states have internal predecessors, (97), 8 states have call successors, (15), 8 states have call predecessors, (15), 11 states have return successors, (11), 10 states have call predecessors, (11), 7 states have call successors, (11) [2021-08-27 07:30:56,417 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 137 transitions. [2021-08-27 07:30:56,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-27 07:30:56,418 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:30:56,418 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-08-27 07:30:56,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-27 07:30:56,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:30:56,631 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting sll_circular_get_data_atErr2REQUIRES_VIOLATION === [node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION (and 24 more)] === [2021-08-27 07:30:56,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:30:56,631 INFO L82 PathProgramCache]: Analyzing trace with hash 2144663272, now seen corresponding path program 2 times [2021-08-27 07:30:56,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:30:56,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419593086] [2021-08-27 07:30:56,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:30:56,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:30:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:30:56,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:30:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:30:56,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:30:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:30:56,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:30:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:30:56,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-08-27 07:30:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:30:56,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-08-27 07:30:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:30:56,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-08-27 07:30:56,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:30:56,810 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-08-27 07:30:56,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:30:56,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419593086] [2021-08-27 07:30:56,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419593086] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:30:56,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:30:56,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-27 07:30:56,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503144247] [2021-08-27 07:30:56,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-27 07:30:56,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:30:56,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-27 07:30:56,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-08-27 07:30:56,814 INFO L87 Difference]: Start difference. First operand 123 states and 137 transitions. Second operand has 11 states, 10 states have (on average 4.1) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-08-27 07:30:57,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:30:57,190 INFO L93 Difference]: Finished difference Result 128 states and 135 transitions. [2021-08-27 07:30:57,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 07:30:57,191 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.1) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67 [2021-08-27 07:30:57,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:30:57,191 INFO L225 Difference]: With dead ends: 128 [2021-08-27 07:30:57,191 INFO L226 Difference]: Without dead ends: 128 [2021-08-27 07:30:57,192 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 194.3ms TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-08-27 07:30:57,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-08-27 07:30:57,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 109. [2021-08-27 07:30:57,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 79 states have (on average 1.2151898734177216) internal successors, (96), 90 states have internal predecessors, (96), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-27 07:30:57,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 115 transitions. [2021-08-27 07:30:57,194 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 115 transitions. Word has length 67 [2021-08-27 07:30:57,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:30:57,194 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 115 transitions. [2021-08-27 07:30:57,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.1) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-08-27 07:30:57,195 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 115 transitions. [2021-08-27 07:30:57,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-08-27 07:30:57,195 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:30:57,196 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-08-27 07:30:57,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-27 07:30:57,196 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION (and 24 more)] === [2021-08-27 07:30:57,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:30:57,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1624212225, now seen corresponding path program 1 times [2021-08-27 07:30:57,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:30:57,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973615873] [2021-08-27 07:30:57,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:30:57,197 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:30:57,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:30:57,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:30:57,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:30:57,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:30:57,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:30:57,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:30:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:30:57,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-08-27 07:30:57,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:30:57,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-08-27 07:30:57,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:30:58,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-08-27 07:30:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:30:58,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-08-27 07:30:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:30:58,547 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 07:30:58,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:30:58,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973615873] [2021-08-27 07:30:58,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973615873] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:30:58,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057100734] [2021-08-27 07:30:58,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:30:58,548 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:30:58,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:30:58,550 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:30:58,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-27 07:30:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:30:59,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 116 conjunts are in the unsatisfiable core [2021-08-27 07:30:59,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:30:59,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 07:30:59,493 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 07:30:59,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-08-27 07:30:59,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-27 07:30:59,763 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-27 07:30:59,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2021-08-27 07:31:00,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 96 [2021-08-27 07:31:00,542 INFO L354 Elim1Store]: treesize reduction 31, result has 38.0 percent of original size [2021-08-27 07:31:00,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 90 [2021-08-27 07:31:00,685 INFO L354 Elim1Store]: treesize reduction 86, result has 22.5 percent of original size [2021-08-27 07:31:00,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 75 [2021-08-27 07:31:02,025 WARN L860 $PredicateComparison]: unable to prove that (exists ((sll_circular_update_at_~head.offset Int) (sll_circular_update_at_~data Int)) (let ((.cse0 (+ sll_circular_update_at_~head.offset 4))) (and (= |c_#memory_int| (store |c_old(#memory_int)| |c_sll_circular_update_at_#in~head.base| (store (select |c_old(#memory_int)| |c_sll_circular_update_at_#in~head.base|) .cse0 sll_circular_update_at_~data))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_sll_circular_update_at_#in~head.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_sll_circular_update_at_#in~head.base|) .cse0 (select (select |c_#memory_$Pointer$.offset| |c_sll_circular_update_at_#in~head.base|) .cse0)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_sll_circular_update_at_#in~head.base| (store (select |c_old(#memory_$Pointer$.base)| |c_sll_circular_update_at_#in~head.base|) .cse0 (select (select |c_#memory_$Pointer$.base| |c_sll_circular_update_at_#in~head.base|) .cse0)))) (<= |c_sll_circular_update_at_#in~head.offset| sll_circular_update_at_~head.offset)))) is different from true [2021-08-27 07:31:02,082 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-08-27 07:31:02,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 64 [2021-08-27 07:31:02,095 INFO L354 Elim1Store]: treesize reduction 59, result has 22.4 percent of original size [2021-08-27 07:31:02,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 64 [2021-08-27 07:31:02,106 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-08-27 07:31:02,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 36 [2021-08-27 07:31:03,341 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-08-27 07:31:03,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 80 [2021-08-27 07:31:03,356 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-08-27 07:31:03,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 76 [2021-08-27 07:31:03,371 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-27 07:31:03,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 62 [2021-08-27 07:31:03,494 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 2 not checked. [2021-08-27 07:31:03,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057100734] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:31:03,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:31:03,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36] total 68 [2021-08-27 07:31:03,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265721878] [2021-08-27 07:31:03,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2021-08-27 07:31:03,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:31:03,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-08-27 07:31:03,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=4247, Unknown=1, NotChecked=130, Total=4556 [2021-08-27 07:31:03,497 INFO L87 Difference]: Start difference. First operand 109 states and 115 transitions. Second operand has 68 states, 64 states have (on average 1.578125) internal successors, (101), 56 states have internal predecessors, (101), 9 states have call successors, (15), 7 states have call predecessors, (15), 12 states have return successors, (13), 12 states have call predecessors, (13), 9 states have call successors, (13) [2021-08-27 07:31:16,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:31:16,338 INFO L93 Difference]: Finished difference Result 132 states and 138 transitions. [2021-08-27 07:31:16,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-27 07:31:16,338 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 64 states have (on average 1.578125) internal successors, (101), 56 states have internal predecessors, (101), 9 states have call successors, (15), 7 states have call predecessors, (15), 12 states have return successors, (13), 12 states have call predecessors, (13), 9 states have call successors, (13) Word has length 70 [2021-08-27 07:31:16,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:31:16,339 INFO L225 Difference]: With dead ends: 132 [2021-08-27 07:31:16,339 INFO L226 Difference]: Without dead ends: 132 [2021-08-27 07:31:16,341 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1357 ImplicationChecksByTransitivity, 14271.9ms TimeCoverageRelationStatistics Valid=498, Invalid=9196, Unknown=12, NotChecked=194, Total=9900 [2021-08-27 07:31:16,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-08-27 07:31:16,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 109. [2021-08-27 07:31:16,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 79 states have (on average 1.2025316455696202) internal successors, (95), 90 states have internal predecessors, (95), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-27 07:31:16,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 114 transitions. [2021-08-27 07:31:16,344 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 114 transitions. Word has length 70 [2021-08-27 07:31:16,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:31:16,344 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 114 transitions. [2021-08-27 07:31:16,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 64 states have (on average 1.578125) internal successors, (101), 56 states have internal predecessors, (101), 9 states have call successors, (15), 7 states have call predecessors, (15), 12 states have return successors, (13), 12 states have call predecessors, (13), 9 states have call successors, (13) [2021-08-27 07:31:16,345 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 114 transitions. [2021-08-27 07:31:16,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-08-27 07:31:16,346 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:31:16,346 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-08-27 07:31:16,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-08-27 07:31:16,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-08-27 07:31:16,571 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION (and 24 more)] === [2021-08-27 07:31:16,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:31:16,572 INFO L82 PathProgramCache]: Analyzing trace with hash -734251570, now seen corresponding path program 1 times [2021-08-27 07:31:16,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:31:16,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317166984] [2021-08-27 07:31:16,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:31:16,572 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:31:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:16,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:31:16,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:16,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:31:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:16,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:31:16,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:16,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-08-27 07:31:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:16,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-08-27 07:31:16,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:16,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-08-27 07:31:16,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:17,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-08-27 07:31:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:17,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-08-27 07:31:17,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:17,149 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-08-27 07:31:17,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:31:17,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317166984] [2021-08-27 07:31:17,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317166984] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:31:17,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563287020] [2021-08-27 07:31:17,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:31:17,150 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:31:17,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:31:17,153 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:31:17,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-08-27 07:31:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:17,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 56 conjunts are in the unsatisfiable core [2021-08-27 07:31:17,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:31:18,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-08-27 07:31:18,633 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-08-27 07:31:18,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 10 [2021-08-27 07:31:18,683 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-08-27 07:31:18,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563287020] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:31:18,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:31:18,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 17] total 40 [2021-08-27 07:31:18,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415223888] [2021-08-27 07:31:18,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-08-27 07:31:18,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:31:18,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-08-27 07:31:18,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1448, Unknown=0, NotChecked=0, Total=1560 [2021-08-27 07:31:18,685 INFO L87 Difference]: Start difference. First operand 109 states and 114 transitions. Second operand has 40 states, 36 states have (on average 2.9444444444444446) internal successors, (106), 35 states have internal predecessors, (106), 10 states have call successors, (17), 5 states have call predecessors, (17), 8 states have return successors, (14), 12 states have call predecessors, (14), 10 states have call successors, (14) [2021-08-27 07:31:20,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:31:20,532 INFO L93 Difference]: Finished difference Result 140 states and 146 transitions. [2021-08-27 07:31:20,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-08-27 07:31:20,533 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 36 states have (on average 2.9444444444444446) internal successors, (106), 35 states have internal predecessors, (106), 10 states have call successors, (17), 5 states have call predecessors, (17), 8 states have return successors, (14), 12 states have call predecessors, (14), 10 states have call successors, (14) Word has length 81 [2021-08-27 07:31:20,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:31:20,533 INFO L225 Difference]: With dead ends: 140 [2021-08-27 07:31:20,534 INFO L226 Difference]: Without dead ends: 140 [2021-08-27 07:31:20,535 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 1543.7ms TimeCoverageRelationStatistics Valid=360, Invalid=3800, Unknown=0, NotChecked=0, Total=4160 [2021-08-27 07:31:20,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-08-27 07:31:20,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 115. [2021-08-27 07:31:20,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 84 states have (on average 1.1904761904761905) internal successors, (100), 95 states have internal predecessors, (100), 10 states have call successors, (10), 9 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) [2021-08-27 07:31:20,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 120 transitions. [2021-08-27 07:31:20,538 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 120 transitions. Word has length 81 [2021-08-27 07:31:20,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:31:20,538 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 120 transitions. [2021-08-27 07:31:20,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 36 states have (on average 2.9444444444444446) internal successors, (106), 35 states have internal predecessors, (106), 10 states have call successors, (17), 5 states have call predecessors, (17), 8 states have return successors, (14), 12 states have call predecessors, (14), 10 states have call successors, (14) [2021-08-27 07:31:20,538 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 120 transitions. [2021-08-27 07:31:20,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-08-27 07:31:20,539 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:31:20,539 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-08-27 07:31:20,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-08-27 07:31:20,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-08-27 07:31:20,745 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION (and 24 more)] === [2021-08-27 07:31:20,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:31:20,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1897701511, now seen corresponding path program 2 times [2021-08-27 07:31:20,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:31:20,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296966510] [2021-08-27 07:31:20,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:31:20,746 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:31:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:20,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:31:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:20,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:31:20,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:20,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:31:20,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:20,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-08-27 07:31:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:20,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-08-27 07:31:20,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:20,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-08-27 07:31:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:20,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-08-27 07:31:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:20,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-08-27 07:31:20,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:20,931 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-08-27 07:31:20,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:31:20,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296966510] [2021-08-27 07:31:20,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296966510] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:31:20,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249773769] [2021-08-27 07:31:20,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 07:31:20,932 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:31:20,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:31:20,937 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:31:20,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-08-27 07:31:21,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 07:31:21,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:31:21,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 07:31:21,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:31:21,916 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-08-27 07:31:21,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249773769] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:31:21,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:31:21,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 15 [2021-08-27 07:31:21,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133961939] [2021-08-27 07:31:21,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-27 07:31:21,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:31:21,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-27 07:31:21,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-08-27 07:31:21,918 INFO L87 Difference]: Start difference. First operand 115 states and 120 transitions. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 12 states have internal predecessors, (74), 6 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2021-08-27 07:31:22,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:31:22,311 INFO L93 Difference]: Finished difference Result 130 states and 135 transitions. [2021-08-27 07:31:22,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 07:31:22,311 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 12 states have internal predecessors, (74), 6 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) Word has length 84 [2021-08-27 07:31:22,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:31:22,312 INFO L225 Difference]: With dead ends: 130 [2021-08-27 07:31:22,313 INFO L226 Difference]: Without dead ends: 123 [2021-08-27 07:31:22,313 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 221.3ms TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2021-08-27 07:31:22,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-08-27 07:31:22,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 104. [2021-08-27 07:31:22,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 75 states have (on average 1.1866666666666668) internal successors, (89), 85 states have internal predecessors, (89), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-27 07:31:22,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 108 transitions. [2021-08-27 07:31:22,316 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 108 transitions. Word has length 84 [2021-08-27 07:31:22,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:31:22,317 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 108 transitions. [2021-08-27 07:31:22,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 12 states have internal predecessors, (74), 6 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2021-08-27 07:31:22,317 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 108 transitions. [2021-08-27 07:31:22,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-08-27 07:31:22,318 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:31:22,318 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-08-27 07:31:22,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-08-27 07:31:22,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-08-27 07:31:22,525 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting sll_circular_destroyErr0REQUIRES_VIOLATION === [node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION (and 24 more)] === [2021-08-27 07:31:22,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:31:22,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1533729650, now seen corresponding path program 1 times [2021-08-27 07:31:22,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:31:22,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574167467] [2021-08-27 07:31:22,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:31:22,525 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:31:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:22,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:31:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:22,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:31:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:22,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:31:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:22,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-08-27 07:31:22,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:22,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-08-27 07:31:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:22,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-08-27 07:31:22,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:22,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-08-27 07:31:22,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:22,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-08-27 07:31:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:22,657 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-08-27 07:31:22,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:31:22,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574167467] [2021-08-27 07:31:22,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574167467] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:31:22,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:31:22,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-27 07:31:22,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630883343] [2021-08-27 07:31:22,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-27 07:31:22,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:31:22,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 07:31:22,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-08-27 07:31:22,659 INFO L87 Difference]: Start difference. First operand 104 states and 108 transitions. Second operand has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-08-27 07:31:23,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:31:23,030 INFO L93 Difference]: Finished difference Result 124 states and 128 transitions. [2021-08-27 07:31:23,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 07:31:23,030 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 86 [2021-08-27 07:31:23,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:31:23,031 INFO L225 Difference]: With dead ends: 124 [2021-08-27 07:31:23,031 INFO L226 Difference]: Without dead ends: 124 [2021-08-27 07:31:23,032 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 188.0ms TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-08-27 07:31:23,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-08-27 07:31:23,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 107. [2021-08-27 07:31:23,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 79 states have (on average 1.2025316455696202) internal successors, (95), 88 states have internal predecessors, (95), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-27 07:31:23,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 114 transitions. [2021-08-27 07:31:23,034 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 114 transitions. Word has length 86 [2021-08-27 07:31:23,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:31:23,034 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 114 transitions. [2021-08-27 07:31:23,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-08-27 07:31:23,035 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 114 transitions. [2021-08-27 07:31:23,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-08-27 07:31:23,035 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:31:23,035 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-08-27 07:31:23,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-27 07:31:23,035 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting sll_circular_destroyErr1REQUIRES_VIOLATION === [node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION (and 24 more)] === [2021-08-27 07:31:23,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:31:23,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1533729649, now seen corresponding path program 1 times [2021-08-27 07:31:23,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:31:23,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465119896] [2021-08-27 07:31:23,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:31:23,036 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:31:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:23,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:31:23,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:23,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:31:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:23,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:31:23,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:23,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-08-27 07:31:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:23,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-08-27 07:31:23,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:23,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-08-27 07:31:23,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:23,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-08-27 07:31:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:23,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-08-27 07:31:23,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:23,311 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-08-27 07:31:23,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:31:23,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465119896] [2021-08-27 07:31:23,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465119896] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:31:23,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:31:23,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-08-27 07:31:23,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537528513] [2021-08-27 07:31:23,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-27 07:31:23,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:31:23,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-27 07:31:23,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2021-08-27 07:31:23,314 INFO L87 Difference]: Start difference. First operand 107 states and 114 transitions. Second operand has 15 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-08-27 07:31:23,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:31:23,847 INFO L93 Difference]: Finished difference Result 118 states and 123 transitions. [2021-08-27 07:31:23,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-27 07:31:23,847 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 86 [2021-08-27 07:31:23,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:31:23,848 INFO L225 Difference]: With dead ends: 118 [2021-08-27 07:31:23,848 INFO L226 Difference]: Without dead ends: 118 [2021-08-27 07:31:23,848 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 299.5ms TimeCoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2021-08-27 07:31:23,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-08-27 07:31:23,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 105. [2021-08-27 07:31:23,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 79 states have (on average 1.1645569620253164) internal successors, (92), 86 states have internal predecessors, (92), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-27 07:31:23,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 111 transitions. [2021-08-27 07:31:23,851 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 111 transitions. Word has length 86 [2021-08-27 07:31:23,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:31:23,852 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 111 transitions. [2021-08-27 07:31:23,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-08-27 07:31:23,852 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 111 transitions. [2021-08-27 07:31:23,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-08-27 07:31:23,853 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:31:23,853 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-08-27 07:31:23,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-08-27 07:31:23,853 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting sll_circular_destroyErr2REQUIRES_VIOLATION === [node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION (and 24 more)] === [2021-08-27 07:31:23,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:31:23,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1477834531, now seen corresponding path program 1 times [2021-08-27 07:31:23,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:31:23,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644805135] [2021-08-27 07:31:23,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:31:23,854 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:31:23,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:23,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:31:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:23,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:31:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:23,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:31:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:23,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-08-27 07:31:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:23,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-08-27 07:31:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:23,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-08-27 07:31:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:23,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-08-27 07:31:23,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:24,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-08-27 07:31:24,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:24,043 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-08-27 07:31:24,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:31:24,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644805135] [2021-08-27 07:31:24,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644805135] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:31:24,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191301007] [2021-08-27 07:31:24,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:31:24,044 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:31:24,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:31:24,049 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:31:24,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-08-27 07:31:24,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:24,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 56 conjunts are in the unsatisfiable core [2021-08-27 07:31:24,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:31:25,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-08-27 07:31:25,445 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-08-27 07:31:25,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191301007] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:31:25,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:31:25,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 19] total 25 [2021-08-27 07:31:25,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597650961] [2021-08-27 07:31:25,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-08-27 07:31:25,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:31:25,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-08-27 07:31:25,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2021-08-27 07:31:25,447 INFO L87 Difference]: Start difference. First operand 105 states and 111 transitions. Second operand has 26 states, 25 states have (on average 3.68) internal successors, (92), 19 states have internal predecessors, (92), 4 states have call successors, (17), 7 states have call predecessors, (17), 5 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2021-08-27 07:31:26,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:31:26,494 INFO L93 Difference]: Finished difference Result 118 states and 122 transitions. [2021-08-27 07:31:26,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-27 07:31:26,494 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.68) internal successors, (92), 19 states have internal predecessors, (92), 4 states have call successors, (17), 7 states have call predecessors, (17), 5 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 89 [2021-08-27 07:31:26,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:31:26,495 INFO L225 Difference]: With dead ends: 118 [2021-08-27 07:31:26,495 INFO L226 Difference]: Without dead ends: 118 [2021-08-27 07:31:26,496 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 801.1ms TimeCoverageRelationStatistics Valid=185, Invalid=1537, Unknown=0, NotChecked=0, Total=1722 [2021-08-27 07:31:26,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-08-27 07:31:26,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 105. [2021-08-27 07:31:26,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 80 states have (on average 1.1625) internal successors, (93), 86 states have internal predecessors, (93), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-27 07:31:26,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 112 transitions. [2021-08-27 07:31:26,498 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 112 transitions. Word has length 89 [2021-08-27 07:31:26,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:31:26,499 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 112 transitions. [2021-08-27 07:31:26,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.68) internal successors, (92), 19 states have internal predecessors, (92), 4 states have call successors, (17), 7 states have call predecessors, (17), 5 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2021-08-27 07:31:26,499 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 112 transitions. [2021-08-27 07:31:26,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-08-27 07:31:26,500 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:31:26,500 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-08-27 07:31:26,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-08-27 07:31:26,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-08-27 07:31:26,709 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting sll_circular_destroyErr3REQUIRES_VIOLATION === [node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION (and 24 more)] === [2021-08-27 07:31:26,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:31:26,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1477834530, now seen corresponding path program 1 times [2021-08-27 07:31:26,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:31:26,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969092355] [2021-08-27 07:31:26,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:31:26,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:31:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:26,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:31:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:26,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:31:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:27,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:31:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:27,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-08-27 07:31:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:27,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-08-27 07:31:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:27,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-08-27 07:31:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:27,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-08-27 07:31:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:27,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-08-27 07:31:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:27,824 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 23 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-08-27 07:31:27,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:31:27,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969092355] [2021-08-27 07:31:27,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969092355] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:31:27,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634738521] [2021-08-27 07:31:27,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:31:27,825 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:31:27,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:31:27,829 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:31:27,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-08-27 07:31:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:28,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 110 conjunts are in the unsatisfiable core [2021-08-27 07:31:28,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:31:28,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 07:31:29,033 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 07:31:29,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-08-27 07:31:29,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-27 07:31:29,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-27 07:31:29,389 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-27 07:31:29,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 49 [2021-08-27 07:31:29,401 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-08-27 07:31:29,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 50 [2021-08-27 07:31:30,825 WARN L860 $PredicateComparison]: unable to prove that (exists ((sll_circular_update_at_~head.offset Int)) (= |c_#memory_$Pointer$.offset| (let ((.cse0 (select (select |c_old(#memory_$Pointer$.base)| |c_sll_circular_update_at_#in~head.base|) |c_sll_circular_update_at_#in~head.offset|))) (store |c_old(#memory_$Pointer$.offset)| .cse0 (let ((.cse1 (+ sll_circular_update_at_~head.offset 4))) (store (select |c_old(#memory_$Pointer$.offset)| .cse0) .cse1 (select (select |c_#memory_$Pointer$.offset| .cse0) .cse1))))))) is different from true [2021-08-27 07:31:30,852 INFO L354 Elim1Store]: treesize reduction 25, result has 24.2 percent of original size [2021-08-27 07:31:30,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 65 [2021-08-27 07:31:30,906 INFO L354 Elim1Store]: treesize reduction 60, result has 36.8 percent of original size [2021-08-27 07:31:30,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 62 [2021-08-27 07:31:32,271 WARN L860 $PredicateComparison]: unable to prove that (exists ((sll_circular_update_at_~head.offset Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_sll_circular_update_at_#in~head.base| (let ((.cse0 (+ sll_circular_update_at_~head.offset 4))) (store (select |c_old(#memory_$Pointer$.offset)| |c_sll_circular_update_at_#in~head.base|) .cse0 (select (select |c_#memory_$Pointer$.offset| |c_sll_circular_update_at_#in~head.base|) .cse0))))) (<= |c_sll_circular_update_at_#in~head.offset| sll_circular_update_at_~head.offset))) is different from true [2021-08-27 07:31:32,295 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 07:31:32,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-27 07:31:32,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2021-08-27 07:31:32,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988950113] [2021-08-27 07:31:32,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-08-27 07:31:32,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:31:32,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-08-27 07:31:32,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=2918, Unknown=2, NotChecked=218, Total=3306 [2021-08-27 07:31:32,297 INFO L87 Difference]: Start difference. First operand 105 states and 112 transitions. Second operand has 37 states, 36 states have (on average 1.8888888888888888) internal successors, (68), 30 states have internal predecessors, (68), 6 states have call successors, (10), 5 states have call predecessors, (10), 7 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2021-08-27 07:31:35,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:31:35,758 INFO L93 Difference]: Finished difference Result 115 states and 120 transitions. [2021-08-27 07:31:35,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-27 07:31:35,759 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.8888888888888888) internal successors, (68), 30 states have internal predecessors, (68), 6 states have call successors, (10), 5 states have call predecessors, (10), 7 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) Word has length 89 [2021-08-27 07:31:35,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:31:35,760 INFO L225 Difference]: With dead ends: 115 [2021-08-27 07:31:35,760 INFO L226 Difference]: Without dead ends: 115 [2021-08-27 07:31:35,761 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 5361.2ms TimeCoverageRelationStatistics Valid=467, Invalid=6017, Unknown=4, NotChecked=318, Total=6806 [2021-08-27 07:31:35,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-08-27 07:31:35,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 107. [2021-08-27 07:31:35,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 82 states have (on average 1.146341463414634) internal successors, (94), 88 states have internal predecessors, (94), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-27 07:31:35,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 113 transitions. [2021-08-27 07:31:35,764 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 113 transitions. Word has length 89 [2021-08-27 07:31:35,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:31:35,765 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 113 transitions. [2021-08-27 07:31:35,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.8888888888888888) internal successors, (68), 30 states have internal predecessors, (68), 6 states have call successors, (10), 5 states have call predecessors, (10), 7 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2021-08-27 07:31:35,765 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 113 transitions. [2021-08-27 07:31:35,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-08-27 07:31:35,765 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:31:35,766 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-08-27 07:31:35,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-08-27 07:31:35,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:31:35,969 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr1ENSURES_VIOLATIONMEMORY_LEAK === [node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION (and 24 more)] === [2021-08-27 07:31:35,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:31:35,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1445302179, now seen corresponding path program 1 times [2021-08-27 07:31:35,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:31:35,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994671568] [2021-08-27 07:31:35,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:31:35,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:31:35,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:36,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:31:36,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:36,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:31:36,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:36,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:31:36,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:36,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-08-27 07:31:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:36,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-08-27 07:31:36,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:36,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-08-27 07:31:36,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:36,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-08-27 07:31:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:36,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-08-27 07:31:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:36,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-08-27 07:31:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:36,183 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-08-27 07:31:36,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:31:36,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994671568] [2021-08-27 07:31:36,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994671568] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:31:36,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:31:36,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-27 07:31:36,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033740844] [2021-08-27 07:31:36,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-27 07:31:36,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:31:36,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-27 07:31:36,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2021-08-27 07:31:36,185 INFO L87 Difference]: Start difference. First operand 107 states and 113 transitions. Second operand has 16 states, 16 states have (on average 3.4375) internal successors, (55), 10 states have internal predecessors, (55), 2 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) [2021-08-27 07:31:36,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:31:36,674 INFO L93 Difference]: Finished difference Result 113 states and 117 transitions. [2021-08-27 07:31:36,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-27 07:31:36,674 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 10 states have internal predecessors, (55), 2 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) Word has length 89 [2021-08-27 07:31:36,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:31:36,675 INFO L225 Difference]: With dead ends: 113 [2021-08-27 07:31:36,676 INFO L226 Difference]: Without dead ends: 111 [2021-08-27 07:31:36,676 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 242.0ms TimeCoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2021-08-27 07:31:36,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-08-27 07:31:36,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 107. [2021-08-27 07:31:36,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 82 states have (on average 1.1341463414634145) internal successors, (93), 88 states have internal predecessors, (93), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-27 07:31:36,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 112 transitions. [2021-08-27 07:31:36,679 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 112 transitions. Word has length 89 [2021-08-27 07:31:36,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:31:36,679 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 112 transitions. [2021-08-27 07:31:36,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 10 states have internal predecessors, (55), 2 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) [2021-08-27 07:31:36,680 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 112 transitions. [2021-08-27 07:31:36,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-08-27 07:31:36,680 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:31:36,680 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-08-27 07:31:36,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-08-27 07:31:36,681 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting sll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE === [node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION (and 24 more)] === [2021-08-27 07:31:36,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:31:36,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1431768405, now seen corresponding path program 1 times [2021-08-27 07:31:36,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:31:36,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232846603] [2021-08-27 07:31:36,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:31:36,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:31:36,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:36,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:31:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:36,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:31:36,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:36,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:31:36,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:36,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-08-27 07:31:36,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:36,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-08-27 07:31:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:36,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-08-27 07:31:36,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:36,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-08-27 07:31:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:36,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-08-27 07:31:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:36,886 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-08-27 07:31:36,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:31:36,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232846603] [2021-08-27 07:31:36,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232846603] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:31:36,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:31:36,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-08-27 07:31:36,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82763811] [2021-08-27 07:31:36,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-27 07:31:36,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:31:36,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-27 07:31:36,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2021-08-27 07:31:36,889 INFO L87 Difference]: Start difference. First operand 107 states and 112 transitions. Second operand has 15 states, 14 states have (on average 4.071428571428571) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-08-27 07:31:37,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:31:37,399 INFO L93 Difference]: Finished difference Result 109 states and 113 transitions. [2021-08-27 07:31:37,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-27 07:31:37,400 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.071428571428571) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 90 [2021-08-27 07:31:37,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:31:37,400 INFO L225 Difference]: With dead ends: 109 [2021-08-27 07:31:37,400 INFO L226 Difference]: Without dead ends: 109 [2021-08-27 07:31:37,401 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 244.8ms TimeCoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2021-08-27 07:31:37,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-08-27 07:31:37,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2021-08-27 07:31:37,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 82 states have (on average 1.1097560975609757) internal successors, (91), 87 states have internal predecessors, (91), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-27 07:31:37,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2021-08-27 07:31:37,406 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 90 [2021-08-27 07:31:37,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:31:37,406 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 110 transitions. [2021-08-27 07:31:37,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.071428571428571) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-08-27 07:31:37,407 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 110 transitions. [2021-08-27 07:31:37,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-08-27 07:31:37,407 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:31:37,407 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-08-27 07:31:37,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-08-27 07:31:37,408 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting sll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE === [node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION (and 24 more)] === [2021-08-27 07:31:37,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:31:37,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1541324730, now seen corresponding path program 1 times [2021-08-27 07:31:37,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:31:37,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970676506] [2021-08-27 07:31:37,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:31:37,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:31:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:37,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:31:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:37,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:31:37,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:37,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:31:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:37,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-08-27 07:31:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:37,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-08-27 07:31:37,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:38,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-08-27 07:31:38,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:38,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-08-27 07:31:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:38,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-08-27 07:31:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:38,145 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-08-27 07:31:38,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:31:38,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970676506] [2021-08-27 07:31:38,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970676506] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:31:38,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215636381] [2021-08-27 07:31:38,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:31:38,147 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:31:38,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:31:38,162 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:31:38,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-08-27 07:31:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:39,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 87 conjunts are in the unsatisfiable core [2021-08-27 07:31:39,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:31:39,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 07:31:39,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-08-27 07:31:39,302 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 07:31:39,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-08-27 07:31:39,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-27 07:31:39,434 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-27 07:31:39,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 27 [2021-08-27 07:31:39,742 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-27 07:31:39,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 16 [2021-08-27 07:31:40,763 WARN L860 $PredicateComparison]: unable to prove that (exists ((sll_circular_update_at_~head.offset Int)) (= |c_#memory_$Pointer$.base| (let ((.cse0 (select (select |c_old(#memory_$Pointer$.base)| |c_sll_circular_update_at_#in~head.base|) |c_sll_circular_update_at_#in~head.offset|))) (store |c_old(#memory_$Pointer$.base)| .cse0 (let ((.cse1 (+ sll_circular_update_at_~head.offset 4))) (store (select |c_old(#memory_$Pointer$.base)| .cse0) .cse1 (select (select |c_#memory_$Pointer$.base| .cse0) .cse1))))))) is different from true [2021-08-27 07:31:40,810 INFO L354 Elim1Store]: treesize reduction 127, result has 15.9 percent of original size [2021-08-27 07:31:40,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 57 [2021-08-27 07:31:40,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-08-27 07:31:41,471 WARN L860 $PredicateComparison]: unable to prove that (exists ((sll_circular_update_at_~head.offset Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_sll_circular_update_at_#in~head.base| (let ((.cse0 (+ sll_circular_update_at_~head.offset 4))) (store (select |c_old(#memory_$Pointer$.base)| |c_sll_circular_update_at_#in~head.base|) .cse0 (select (select |c_#memory_$Pointer$.base| |c_sll_circular_update_at_#in~head.base|) .cse0))))) (<= |c_sll_circular_update_at_#in~head.offset| sll_circular_update_at_~head.offset))) is different from true [2021-08-27 07:31:41,494 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-08-27 07:31:41,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2021-08-27 07:31:41,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-08-27 07:31:42,033 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 2 not checked. [2021-08-27 07:31:42,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215636381] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:31:42,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:31:42,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 45 [2021-08-27 07:31:42,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559893813] [2021-08-27 07:31:42,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-08-27 07:31:42,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:31:42,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-08-27 07:31:42,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1752, Unknown=2, NotChecked=170, Total=2070 [2021-08-27 07:31:42,035 INFO L87 Difference]: Start difference. First operand 106 states and 110 transitions. Second operand has 46 states, 45 states have (on average 2.4) internal successors, (108), 35 states have internal predecessors, (108), 6 states have call successors, (17), 9 states have call predecessors, (17), 10 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2021-08-27 07:31:46,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:31:46,237 INFO L93 Difference]: Finished difference Result 110 states and 114 transitions. [2021-08-27 07:31:46,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-27 07:31:46,238 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.4) internal successors, (108), 35 states have internal predecessors, (108), 6 states have call successors, (17), 9 states have call predecessors, (17), 10 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) Word has length 92 [2021-08-27 07:31:46,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:31:46,238 INFO L225 Difference]: With dead ends: 110 [2021-08-27 07:31:46,238 INFO L226 Difference]: Without dead ends: 110 [2021-08-27 07:31:46,239 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 80 SyntacticMatches, 9 SemanticMatches, 66 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 5797.3ms TimeCoverageRelationStatistics Valid=432, Invalid=3864, Unknown=2, NotChecked=258, Total=4556 [2021-08-27 07:31:46,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-08-27 07:31:46,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 107. [2021-08-27 07:31:46,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 83 states have (on average 1.108433734939759) internal successors, (92), 88 states have internal predecessors, (92), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-27 07:31:46,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2021-08-27 07:31:46,242 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 92 [2021-08-27 07:31:46,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:31:46,242 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2021-08-27 07:31:46,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.4) internal successors, (108), 35 states have internal predecessors, (108), 6 states have call successors, (17), 9 states have call predecessors, (17), 10 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2021-08-27 07:31:46,242 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2021-08-27 07:31:46,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-08-27 07:31:46,243 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:31:46,243 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-08-27 07:31:46,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-08-27 07:31:46,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:31:46,449 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting sll_circular_destroyErr2REQUIRES_VIOLATION === [node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION (and 24 more)] === [2021-08-27 07:31:46,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:31:46,449 INFO L82 PathProgramCache]: Analyzing trace with hash 109821506, now seen corresponding path program 1 times [2021-08-27 07:31:46,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:31:46,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133485211] [2021-08-27 07:31:46,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:31:46,449 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:31:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:46,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:31:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:46,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:31:46,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:47,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:31:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:47,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-08-27 07:31:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:47,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-08-27 07:31:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:47,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-08-27 07:31:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:47,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-08-27 07:31:47,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:47,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-08-27 07:31:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:47,812 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-08-27 07:31:47,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:31:47,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133485211] [2021-08-27 07:31:47,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133485211] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:31:47,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115962947] [2021-08-27 07:31:47,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:31:47,813 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:31:47,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:31:47,814 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:31:47,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-08-27 07:31:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:31:48,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 122 conjunts are in the unsatisfiable core [2021-08-27 07:31:48,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:31:48,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 07:31:49,066 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 07:31:49,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-08-27 07:31:49,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-27 07:31:49,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-27 07:31:49,308 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-08-27 07:31:49,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 48 [2021-08-27 07:31:49,317 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-08-27 07:31:49,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 44 [2021-08-27 07:31:51,084 WARN L860 $PredicateComparison]: unable to prove that (exists ((sll_circular_update_at_~head.offset Int)) (let ((.cse0 (select (select |c_old(#memory_$Pointer$.base)| |c_sll_circular_update_at_#in~head.base|) |c_sll_circular_update_at_#in~head.offset|)) (.cse1 (+ sll_circular_update_at_~head.offset 4))) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| .cse0 (store (select |c_old(#memory_$Pointer$.base)| .cse0) .cse1 (select (select |c_#memory_$Pointer$.base| .cse0) .cse1)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| .cse0 (store (select |c_old(#memory_$Pointer$.offset)| .cse0) .cse1 (select (select |c_#memory_$Pointer$.offset| .cse0) .cse1)))) (<= (select (select |c_old(#memory_$Pointer$.offset)| |c_sll_circular_update_at_#in~head.base|) |c_sll_circular_update_at_#in~head.offset|) sll_circular_update_at_~head.offset)))) is different from true [2021-08-27 07:31:51,135 INFO L354 Elim1Store]: treesize reduction 149, result has 14.9 percent of original size [2021-08-27 07:31:51,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 115 treesize of output 98 [2021-08-27 07:31:51,162 INFO L354 Elim1Store]: treesize reduction 189, result has 10.4 percent of original size [2021-08-27 07:31:51,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 84 treesize of output 53 [2021-08-27 07:31:52,230 WARN L860 $PredicateComparison]: unable to prove that (exists ((sll_circular_update_at_~head.offset Int)) (let ((.cse0 (+ sll_circular_update_at_~head.offset 4))) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_sll_circular_update_at_#in~head.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_sll_circular_update_at_#in~head.base|) .cse0 (select (select |c_#memory_$Pointer$.offset| |c_sll_circular_update_at_#in~head.base|) .cse0)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_sll_circular_update_at_#in~head.base| (store (select |c_old(#memory_$Pointer$.base)| |c_sll_circular_update_at_#in~head.base|) .cse0 (select (select |c_#memory_$Pointer$.base| |c_sll_circular_update_at_#in~head.base|) .cse0)))) (<= |c_sll_circular_update_at_#in~head.offset| sll_circular_update_at_~head.offset)))) is different from true [2021-08-27 07:31:52,273 INFO L354 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2021-08-27 07:31:52,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 69 [2021-08-27 07:31:52,294 INFO L354 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2021-08-27 07:31:52,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 50 [2021-08-27 07:31:55,372 INFO L354 Elim1Store]: treesize reduction 69, result has 9.2 percent of original size [2021-08-27 07:31:55,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 55 [2021-08-27 07:31:55,388 INFO L354 Elim1Store]: treesize reduction 53, result has 11.7 percent of original size [2021-08-27 07:31:55,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 29 [2021-08-27 07:31:55,618 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 2 not checked. [2021-08-27 07:31:55,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115962947] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:31:55,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:31:55,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 33] total 63 [2021-08-27 07:31:55,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016996862] [2021-08-27 07:31:55,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2021-08-27 07:31:55,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:31:55,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-08-27 07:31:55,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=3470, Unknown=2, NotChecked=238, Total=3906 [2021-08-27 07:31:55,620 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand has 63 states, 63 states have (on average 1.9841269841269842) internal successors, (125), 50 states have internal predecessors, (125), 7 states have call successors, (16), 9 states have call predecessors, (16), 11 states have return successors, (13), 10 states have call predecessors, (13), 7 states have call successors, (13) [2021-08-27 07:32:25,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:32:25,114 INFO L93 Difference]: Finished difference Result 96 states and 98 transitions. [2021-08-27 07:32:25,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-27 07:32:25,114 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.9841269841269842) internal successors, (125), 50 states have internal predecessors, (125), 7 states have call successors, (16), 9 states have call predecessors, (16), 11 states have return successors, (13), 10 states have call predecessors, (13), 7 states have call successors, (13) Word has length 95 [2021-08-27 07:32:25,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:32:25,115 INFO L225 Difference]: With dead ends: 96 [2021-08-27 07:32:25,115 INFO L226 Difference]: Without dead ends: 96 [2021-08-27 07:32:25,116 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 84 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1141 ImplicationChecksByTransitivity, 19267.6ms TimeCoverageRelationStatistics Valid=499, Invalid=6476, Unknown=5, NotChecked=330, Total=7310 [2021-08-27 07:32:25,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-08-27 07:32:25,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-08-27 07:32:25,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 76 states have (on average 1.0394736842105263) internal successors, (79), 77 states have internal predecessors, (79), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-27 07:32:25,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 98 transitions. [2021-08-27 07:32:25,118 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 98 transitions. Word has length 95 [2021-08-27 07:32:25,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:32:25,118 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 98 transitions. [2021-08-27 07:32:25,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.9841269841269842) internal successors, (125), 50 states have internal predecessors, (125), 7 states have call successors, (16), 9 states have call predecessors, (16), 11 states have return successors, (13), 10 states have call predecessors, (13), 7 states have call successors, (13) [2021-08-27 07:32:25,118 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 98 transitions. [2021-08-27 07:32:25,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-08-27 07:32:25,119 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:32:25,119 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-08-27 07:32:25,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-08-27 07:32:25,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-08-27 07:32:25,321 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting sll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE === [node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION (and 24 more)] === [2021-08-27 07:32:25,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:32:25,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1835758062, now seen corresponding path program 1 times [2021-08-27 07:32:25,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:32:25,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992047728] [2021-08-27 07:32:25,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:32:25,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:32:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:32:25,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:32:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:32:25,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:32:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:32:25,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:32:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:32:25,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-08-27 07:32:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:32:25,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-08-27 07:32:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:32:26,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-08-27 07:32:26,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:32:26,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-08-27 07:32:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:32:26,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-08-27 07:32:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:32:26,087 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-08-27 07:32:26,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:32:26,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992047728] [2021-08-27 07:32:26,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992047728] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:32:26,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575099730] [2021-08-27 07:32:26,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:32:26,087 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:32:26,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:32:26,088 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:32:26,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-08-27 07:32:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:32:27,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-27 07:32:27,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:32:27,591 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-08-27 07:32:27,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 26 [2021-08-27 07:32:27,793 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-08-27 07:32:27,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575099730] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:32:27,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:32:27,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 7] total 35 [2021-08-27 07:32:27,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855259291] [2021-08-27 07:32:27,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-08-27 07:32:27,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:32:27,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-08-27 07:32:27,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1167, Unknown=0, NotChecked=0, Total=1260 [2021-08-27 07:32:27,794 INFO L87 Difference]: Start difference. First operand 96 states and 98 transitions. Second operand has 36 states, 35 states have (on average 3.2857142857142856) internal successors, (115), 29 states have internal predecessors, (115), 4 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2021-08-27 07:32:29,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:32:29,399 INFO L93 Difference]: Finished difference Result 95 states and 97 transitions. [2021-08-27 07:32:29,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-27 07:32:29,399 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 3.2857142857142856) internal successors, (115), 29 states have internal predecessors, (115), 4 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 97 [2021-08-27 07:32:29,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:32:29,400 INFO L225 Difference]: With dead ends: 95 [2021-08-27 07:32:29,400 INFO L226 Difference]: Without dead ends: 95 [2021-08-27 07:32:29,401 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 1455.1ms TimeCoverageRelationStatistics Valid=284, Invalid=2686, Unknown=0, NotChecked=0, Total=2970 [2021-08-27 07:32:29,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-08-27 07:32:29,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-08-27 07:32:29,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 76 states have internal predecessors, (78), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-27 07:32:29,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2021-08-27 07:32:29,403 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 97 [2021-08-27 07:32:29,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:32:29,403 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2021-08-27 07:32:29,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 3.2857142857142856) internal successors, (115), 29 states have internal predecessors, (115), 4 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2021-08-27 07:32:29,404 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2021-08-27 07:32:29,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-08-27 07:32:29,404 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:32:29,405 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-08-27 07:32:29,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-08-27 07:32:29,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:32:29,609 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr1ENSURES_VIOLATIONMEMORY_LEAK === [node_createErr0REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION (and 24 more)] === [2021-08-27 07:32:29,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:32:29,609 INFO L82 PathProgramCache]: Analyzing trace with hash -85323018, now seen corresponding path program 1 times [2021-08-27 07:32:29,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:32:29,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102391602] [2021-08-27 07:32:29,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:32:29,611 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:32:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:32:29,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:32:29,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:32:29,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:32:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:32:30,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-08-27 07:32:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:32:30,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-08-27 07:32:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:32:30,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-08-27 07:32:30,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:32:30,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-08-27 07:32:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:32:30,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-08-27 07:32:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:32:30,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-08-27 07:32:30,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:32:30,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-08-27 07:32:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:32:30,897 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-08-27 07:32:30,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:32:30,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102391602] [2021-08-27 07:32:30,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102391602] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:32:30,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279667304] [2021-08-27 07:32:30,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:32:30,898 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:32:30,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:32:30,899 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:32:30,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-08-27 07:32:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:32:32,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 99 conjunts are in the unsatisfiable core [2021-08-27 07:32:32,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:32:32,348 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-08-27 07:32:32,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 31 [2021-08-27 07:32:32,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-27 07:32:32,671 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-27 07:32:32,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 32 [2021-08-27 07:32:33,077 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-27 07:32:33,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 31 [2021-08-27 07:32:33,081 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-27 07:32:33,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 21 [2021-08-27 07:32:42,541 INFO L354 Elim1Store]: treesize reduction 74, result has 22.1 percent of original size [2021-08-27 07:32:42,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 69 treesize of output 59 [2021-08-27 07:32:42,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-08-27 07:32:42,695 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-27 07:32:42,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 21 [2021-08-27 07:32:42,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-08-27 07:32:43,103 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-27 07:32:43,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 29 [2021-08-27 07:32:43,414 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-27 07:32:43,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 29 [2021-08-27 07:32:43,682 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-27 07:32:43,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 29 [2021-08-27 07:32:43,697 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-27 07:32:43,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2021-08-27 07:33:08,641 INFO L354 Elim1Store]: treesize reduction 17, result has 41.4 percent of original size [2021-08-27 07:33:08,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 55 [2021-08-27 07:33:08,652 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-08-27 07:33:08,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 43 [2021-08-27 07:33:08,786 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-08-27 07:33:08,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279667304] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:33:08,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:33:08,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33] total 61 [2021-08-27 07:33:08,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595801201] [2021-08-27 07:33:08,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2021-08-27 07:33:08,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:33:08,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-08-27 07:33:08,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=3572, Unknown=13, NotChecked=0, Total=3782 [2021-08-27 07:33:08,788 INFO L87 Difference]: Start difference. First operand 95 states and 97 transitions. Second operand has 62 states, 61 states have (on average 2.2459016393442623) internal successors, (137), 52 states have internal predecessors, (137), 8 states have call successors, (17), 8 states have call predecessors, (17), 13 states have return successors, (14), 11 states have call predecessors, (14), 8 states have call successors, (14) [2021-08-27 07:33:49,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:33:49,060 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2021-08-27 07:33:49,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-27 07:33:49,061 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 2.2459016393442623) internal successors, (137), 52 states have internal predecessors, (137), 8 states have call successors, (17), 8 states have call predecessors, (17), 13 states have return successors, (14), 11 states have call predecessors, (14), 8 states have call successors, (14) Word has length 101 [2021-08-27 07:33:49,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:33:49,061 INFO L225 Difference]: With dead ends: 94 [2021-08-27 07:33:49,061 INFO L226 Difference]: Without dead ends: 0 [2021-08-27 07:33:49,062 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 81 SyntacticMatches, 7 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1538 ImplicationChecksByTransitivity, 52511.5ms TimeCoverageRelationStatistics Valid=518, Invalid=7298, Unknown=16, NotChecked=0, Total=7832 [2021-08-27 07:33:49,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-27 07:33:49,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-27 07:33:49,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 07:33:49,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-27 07:33:49,062 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 101 [2021-08-27 07:33:49,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:33:49,062 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 07:33:49,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 2.2459016393442623) internal successors, (137), 52 states have internal predecessors, (137), 8 states have call successors, (17), 8 states have call predecessors, (17), 13 states have return successors, (14), 11 states have call predecessors, (14), 8 states have call successors, (14) [2021-08-27 07:33:49,062 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-27 07:33:49,062 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-27 07:33:49,064 INFO L764 garLoopResultBuilder]: Registering result SAFE for location node_createErr0REQUIRES_VIOLATION [2021-08-27 07:33:49,064 INFO L764 garLoopResultBuilder]: Registering result SAFE for location node_createErr1REQUIRES_VIOLATION [2021-08-27 07:33:49,064 INFO L764 garLoopResultBuilder]: Registering result SAFE for location node_createErr2REQUIRES_VIOLATION [2021-08-27 07:33:49,065 INFO L764 garLoopResultBuilder]: Registering result SAFE for location node_createErr3REQUIRES_VIOLATION [2021-08-27 07:33:49,065 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-08-27 07:33:49,065 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr1ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 07:33:49,065 INFO L764 garLoopResultBuilder]: Registering result SAFE for location sll_circular_update_atErr0REQUIRES_VIOLATION [2021-08-27 07:33:49,065 INFO L764 garLoopResultBuilder]: Registering result SAFE for location sll_circular_update_atErr1REQUIRES_VIOLATION [2021-08-27 07:33:49,065 INFO L764 garLoopResultBuilder]: Registering result SAFE for location sll_circular_update_atErr2REQUIRES_VIOLATION [2021-08-27 07:33:49,065 INFO L764 garLoopResultBuilder]: Registering result SAFE for location sll_circular_update_atErr3REQUIRES_VIOLATION [2021-08-27 07:33:49,065 INFO L764 garLoopResultBuilder]: Registering result SAFE for location sll_circular_destroyErr0REQUIRES_VIOLATION [2021-08-27 07:33:49,065 INFO L764 garLoopResultBuilder]: Registering result SAFE for location sll_circular_destroyErr1REQUIRES_VIOLATION [2021-08-27 07:33:49,065 INFO L764 garLoopResultBuilder]: Registering result SAFE for location sll_circular_destroyErr2REQUIRES_VIOLATION [2021-08-27 07:33:49,065 INFO L764 garLoopResultBuilder]: Registering result SAFE for location sll_circular_destroyErr3REQUIRES_VIOLATION [2021-08-27 07:33:49,065 INFO L764 garLoopResultBuilder]: Registering result SAFE for location sll_circular_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 07:33:49,065 INFO L764 garLoopResultBuilder]: Registering result SAFE for location sll_circular_destroyErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 07:33:49,065 INFO L764 garLoopResultBuilder]: Registering result SAFE for location sll_circular_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 07:33:49,065 INFO L764 garLoopResultBuilder]: Registering result SAFE for location sll_circular_destroyErr7ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 07:33:49,065 INFO L764 garLoopResultBuilder]: Registering result SAFE for location sll_circular_destroyErr8ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 07:33:49,066 INFO L764 garLoopResultBuilder]: Registering result SAFE for location sll_circular_destroyErr9ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 07:33:49,066 INFO L764 garLoopResultBuilder]: Registering result SAFE for location sll_circular_createErr0REQUIRES_VIOLATION [2021-08-27 07:33:49,066 INFO L764 garLoopResultBuilder]: Registering result SAFE for location sll_circular_createErr1REQUIRES_VIOLATION [2021-08-27 07:33:49,066 INFO L764 garLoopResultBuilder]: Registering result SAFE for location sll_circular_createErr2REQUIRES_VIOLATION [2021-08-27 07:33:49,066 INFO L764 garLoopResultBuilder]: Registering result SAFE for location sll_circular_createErr3REQUIRES_VIOLATION [2021-08-27 07:33:49,066 INFO L764 garLoopResultBuilder]: Registering result SAFE for location sll_circular_get_data_atErr0REQUIRES_VIOLATION [2021-08-27 07:33:49,066 INFO L764 garLoopResultBuilder]: Registering result SAFE for location sll_circular_get_data_atErr1REQUIRES_VIOLATION [2021-08-27 07:33:49,066 INFO L764 garLoopResultBuilder]: Registering result SAFE for location sll_circular_get_data_atErr2REQUIRES_VIOLATION [2021-08-27 07:33:49,066 INFO L764 garLoopResultBuilder]: Registering result SAFE for location sll_circular_get_data_atErr3REQUIRES_VIOLATION [2021-08-27 07:33:49,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-08-27 07:33:49,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:33:49,273 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 07:33:49,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 07:33:49 BoogieIcfgContainer [2021-08-27 07:33:49,277 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 07:33:49,278 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 07:33:49,278 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 07:33:49,278 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 07:33:49,278 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:28:56" (3/4) ... [2021-08-27 07:33:49,293 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-27 07:33:49,299 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2021-08-27 07:33:49,299 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-08-27 07:33:49,299 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure myexit [2021-08-27 07:33:49,299 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure sll_circular_get_data_at [2021-08-27 07:33:49,299 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2021-08-27 07:33:49,299 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2021-08-27 07:33:49,300 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure sll_circular_create [2021-08-27 07:33:49,300 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure sll_circular_destroy [2021-08-27 07:33:49,300 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-08-27 07:33:49,300 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure sll_circular_update_at [2021-08-27 07:33:49,300 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure node_create [2021-08-27 07:33:49,305 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2021-08-27 07:33:49,306 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-08-27 07:33:49,306 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-27 07:33:49,306 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-27 07:33:49,364 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 07:33:49,365 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 07:33:49,366 INFO L168 Benchmark]: Toolchain (without parser) took 294102.38 ms. Allocated memory was 65.0 MB in the beginning and 522.2 MB in the end (delta: 457.2 MB). Free memory was 44.3 MB in the beginning and 385.0 MB in the end (delta: -340.7 MB). Peak memory consumption was 114.7 MB. Max. memory is 16.1 GB. [2021-08-27 07:33:49,366 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 65.0 MB. Free memory is still 47.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 07:33:49,366 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.17 ms. Allocated memory is still 65.0 MB. Free memory was 44.1 MB in the beginning and 42.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 07:33:49,367 INFO L168 Benchmark]: Boogie Preprocessor took 51.30 ms. Allocated memory is still 65.0 MB. Free memory was 41.8 MB in the beginning and 39.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 07:33:49,367 INFO L168 Benchmark]: RCFGBuilder took 690.66 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 39.1 MB in the beginning and 39.4 MB in the end (delta: -262.6 kB). Peak memory consumption was 22.0 MB. Max. memory is 16.1 GB. [2021-08-27 07:33:49,367 INFO L168 Benchmark]: TraceAbstraction took 292888.30 ms. Allocated memory was 79.7 MB in the beginning and 522.2 MB in the end (delta: 442.5 MB). Free memory was 38.6 MB in the beginning and 389.5 MB in the end (delta: -350.9 MB). Peak memory consumption was 91.4 MB. Max. memory is 16.1 GB. [2021-08-27 07:33:49,367 INFO L168 Benchmark]: Witness Printer took 87.51 ms. Allocated memory is still 522.2 MB. Free memory was 389.5 MB in the beginning and 385.0 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 07:33:49,369 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 65.0 MB. Free memory is still 47.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 380.17 ms. Allocated memory is still 65.0 MB. Free memory was 44.1 MB in the beginning and 42.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.30 ms. Allocated memory is still 65.0 MB. Free memory was 41.8 MB in the beginning and 39.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 690.66 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 39.1 MB in the beginning and 39.4 MB in the end (delta: -262.6 kB). Peak memory consumption was 22.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 292888.30 ms. Allocated memory was 79.7 MB in the beginning and 522.2 MB in the end (delta: 442.5 MB). Free memory was 38.6 MB in the beginning and 389.5 MB in the end (delta: -350.9 MB). Peak memory consumption was 91.4 MB. Max. memory is 16.1 GB. * Witness Printer took 87.51 ms. Allocated memory is still 522.2 MB. Free memory was 389.5 MB in the beginning and 385.0 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 579]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 579]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 580]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 580]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 637]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 620]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 615]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 615]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 618]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 618]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 597]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 597]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 599]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 599]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 600]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 600]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 600]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 603]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 603]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 603]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 588]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 588]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 592]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 592]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 608]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 608]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 611]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 611]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 114 locations, 28 error locations. Started 1 CEGAR loops. OverallTime: 292830.5ms, OverallIterations: 35, TraceHistogramMax: 3, EmptinessCheckTime: 34.8ms, AutomataDifference: 157891.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2142 SDtfs, 6213 SDslu, 11126 SDs, 0 SdLazy, 39476 SolverSat, 1487 SolverUnsat, 60 SolverUnknown, 0 SolverNotchecked, 90193.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2436 GetRequests, 1246 SyntacticMatches, 36 SemanticMatches, 1154 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 10157 ImplicationChecksByTransitivity, 163280.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=148occurred in iteration=15, InterpolantAutomatonStates: 616, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 183.3ms AutomataMinimizationTime, 35 MinimizatonAttempts, 650 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 381.1ms SsaConstructionTime, 1209.9ms SatisfiabilityAnalysisTime, 115705.6ms InterpolantComputationTime, 3241 NumberOfCodeBlocks, 3231 NumberOfCodeBlocksAsserted, 54 NumberOfCheckSat, 3189 ConstructedInterpolants, 222 QuantifiedInterpolants, 32980 SizeOfPredicates, 237 NumberOfNonLiveVariables, 6042 ConjunctsInSsa, 932 ConjunctsInUnsatCore, 52 InterpolantComputations, 18 PerfectInterpolantSequences, 773/1109 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 - AllSpecificationsHoldResult: All specifications hold 28 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-27 07:33:49,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...