./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 43b2ef256b4d1a93a084f86d3d9a0522c1b29c695f7bf9f8438f4c917cc80da0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:27:51,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:27:51,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:27:51,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:27:51,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:27:51,959 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:27:51,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:27:51,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:27:51,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:27:51,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:27:51,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:27:51,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:27:51,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:27:51,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:27:51,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:27:51,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:27:51,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:27:51,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:27:51,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:27:51,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:27:51,996 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:27:51,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:27:51,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:27:51,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:27:52,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:27:52,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:27:52,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:27:52,006 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:27:52,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:27:52,008 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:27:52,009 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:27:52,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:27:52,009 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:27:52,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:27:52,010 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:27:52,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:27:52,011 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:27:52,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:27:52,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:27:52,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:27:52,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:27:52,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:27:52,016 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-13 22:27:52,052 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:27:52,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:27:52,053 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:27:52,053 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:27:52,054 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:27:52,054 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:27:52,055 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:27:52,055 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:27:52,055 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:27:52,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:27:52,056 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:27:52,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:27:52,056 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:27:52,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:27:52,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:27:52,057 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:27:52,057 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:27:52,057 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:27:52,059 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:27:52,059 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:27:52,059 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:27:52,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:27:52,060 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:27:52,060 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:27:52,060 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:27:52,060 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:27:52,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:27:52,061 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:27:52,067 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:27:52,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:27:52,067 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43b2ef256b4d1a93a084f86d3d9a0522c1b29c695f7bf9f8438f4c917cc80da0 [2022-07-13 22:27:52,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:27:52,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:27:52,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:27:52,326 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:27:52,326 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:27:52,328 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i [2022-07-13 22:27:52,383 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/925f8b714/fa2cb2b23f6448518e09a3b8f54bf155/FLAG3faa9874b [2022-07-13 22:27:53,118 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:27:53,118 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i [2022-07-13 22:27:53,176 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/925f8b714/fa2cb2b23f6448518e09a3b8f54bf155/FLAG3faa9874b [2022-07-13 22:27:53,207 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/925f8b714/fa2cb2b23f6448518e09a3b8f54bf155 [2022-07-13 22:27:53,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:27:53,211 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:27:53,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:27:53,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:27:53,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:27:53,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:27:53" (1/1) ... [2022-07-13 22:27:53,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@246a48bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:27:53, skipping insertion in model container [2022-07-13 22:27:53,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:27:53" (1/1) ... [2022-07-13 22:27:53,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:27:53,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:27:53,514 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i[4493,4506] [2022-07-13 22:27:53,521 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i[4553,4566] [2022-07-13 22:27:54,148 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:27:54,222 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:54,223 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:54,223 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:54,224 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:54,225 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:54,247 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:54,248 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:54,249 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:54,250 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:54,251 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:54,252 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:54,252 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:54,253 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:54,574 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:27:54,575 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:27:54,576 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:27:54,579 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:27:54,581 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:27:54,583 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:27:54,583 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:27:54,585 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:27:54,586 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:27:54,586 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:27:54,726 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:54,730 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:54,796 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:27:54,833 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:27:54,853 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i[4493,4506] [2022-07-13 22:27:54,854 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i[4553,4566] [2022-07-13 22:27:54,877 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:27:54,887 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:54,887 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:54,888 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:54,888 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:54,888 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:54,893 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:54,893 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:54,894 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:54,894 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:54,895 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:54,895 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:54,896 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:54,896 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:54,937 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:27:54,938 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:27:54,939 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:27:54,939 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:27:54,940 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:27:54,940 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:27:54,941 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:27:54,941 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:27:54,941 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:27:54,942 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:27:54,962 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:54,966 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:54,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:27:55,157 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:27:55,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:27:55 WrapperNode [2022-07-13 22:27:55,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:27:55,159 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:27:55,159 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:27:55,159 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:27:55,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:27:55" (1/1) ... [2022-07-13 22:27:55,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:27:55" (1/1) ... [2022-07-13 22:27:55,349 INFO L137 Inliner]: procedures = 691, calls = 1682, calls flagged for inlining = 53, calls inlined = 9, statements flattened = 656 [2022-07-13 22:27:55,350 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:27:55,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:27:55,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:27:55,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:27:55,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:27:55" (1/1) ... [2022-07-13 22:27:55,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:27:55" (1/1) ... [2022-07-13 22:27:55,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:27:55" (1/1) ... [2022-07-13 22:27:55,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:27:55" (1/1) ... [2022-07-13 22:27:55,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:27:55" (1/1) ... [2022-07-13 22:27:55,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:27:55" (1/1) ... [2022-07-13 22:27:55,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:27:55" (1/1) ... [2022-07-13 22:27:55,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:27:55,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:27:55,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:27:55,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:27:55,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:27:55" (1/1) ... [2022-07-13 22:27:55,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:27:55,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:27:55,488 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) [2022-07-13 22:27:55,515 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 [2022-07-13 22:27:55,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:27:55,535 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-07-13 22:27:55,535 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-07-13 22:27:55,536 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-13 22:27:55,536 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-13 22:27:55,537 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-13 22:27:55,537 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-13 22:27:55,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:27:55,537 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-13 22:27:55,537 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-13 22:27:55,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-13 22:27:55,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-13 22:27:55,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 22:27:55,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:27:55,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 22:27:55,538 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-07-13 22:27:55,538 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-07-13 22:27:55,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:27:55,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:27:55,539 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-13 22:27:55,540 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-13 22:27:55,540 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-13 22:27:55,540 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-13 22:27:55,541 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-13 22:27:55,541 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-13 22:27:55,541 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-07-13 22:27:55,541 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-07-13 22:27:55,541 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-07-13 22:27:55,541 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-07-13 22:27:55,541 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 22:27:55,542 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 22:27:55,542 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-07-13 22:27:55,542 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-07-13 22:27:55,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:27:55,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 22:27:55,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-13 22:27:55,543 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-13 22:27:55,543 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-13 22:27:55,543 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-13 22:27:55,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-13 22:27:55,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:27:55,543 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-07-13 22:27:55,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-07-13 22:27:55,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:27:55,834 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:27:55,840 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:27:56,655 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:27:56,666 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:27:56,666 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 22:27:56,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:27:56 BoogieIcfgContainer [2022-07-13 22:27:56,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:27:56,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:27:56,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:27:56,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:27:56,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:27:53" (1/3) ... [2022-07-13 22:27:56,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df932b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:27:56, skipping insertion in model container [2022-07-13 22:27:56,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:27:55" (2/3) ... [2022-07-13 22:27:56,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df932b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:27:56, skipping insertion in model container [2022-07-13 22:27:56,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:27:56" (3/3) ... [2022-07-13 22:27:56,678 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_back_harness.i [2022-07-13 22:27:56,691 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:27:56,692 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:27:56,739 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:27:56,750 INFO L357 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6efce728, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3b31bdcc [2022-07-13 22:27:56,751 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 22:27:56,757 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 109 states have (on average 1.2110091743119267) internal successors, (132), 110 states have internal predecessors, (132), 53 states have call successors, (53), 16 states have call predecessors, (53), 16 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-07-13 22:27:56,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 22:27:56,770 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:27:56,771 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:27:56,772 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:27:56,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:27:56,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1489749117, now seen corresponding path program 1 times [2022-07-13 22:27:56,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:27:56,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020228999] [2022-07-13 22:27:56,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:27:56,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:27:57,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:57,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:27:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:57,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:27:57,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:57,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:27:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:57,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:27:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:57,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:27:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:57,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 22:27:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:57,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 22:27:57,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:57,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 22:27:57,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:57,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 22:27:57,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:57,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:27:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:57,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:27:57,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:57,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 22:27:57,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:57,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:27:57,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:57,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:27:57,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:57,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 22:27:57,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:57,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 22:27:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:57,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 22:27:57,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:57,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 22:27:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:57,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 22:27:57,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:57,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 22:27:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:57,683 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-07-13 22:27:57,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:27:57,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020228999] [2022-07-13 22:27:57,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020228999] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:27:57,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:27:57,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:27:57,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007354577] [2022-07-13 22:27:57,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:27:57,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:27:57,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:27:57,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:27:57,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:27:57,725 INFO L87 Difference]: Start difference. First operand has 180 states, 109 states have (on average 1.2110091743119267) internal successors, (132), 110 states have internal predecessors, (132), 53 states have call successors, (53), 16 states have call predecessors, (53), 16 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-13 22:27:58,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:27:58,235 INFO L93 Difference]: Finished difference Result 374 states and 541 transitions. [2022-07-13 22:27:58,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:27:58,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 124 [2022-07-13 22:27:58,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:27:58,255 INFO L225 Difference]: With dead ends: 374 [2022-07-13 22:27:58,255 INFO L226 Difference]: Without dead ends: 192 [2022-07-13 22:27:58,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:27:58,282 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 114 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 22:27:58,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 285 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 22:27:58,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-07-13 22:27:58,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 171. [2022-07-13 22:27:58,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 102 states have (on average 1.1666666666666667) internal successors, (119), 103 states have internal predecessors, (119), 53 states have call successors, (53), 16 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-07-13 22:27:58,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 223 transitions. [2022-07-13 22:27:58,339 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 223 transitions. Word has length 124 [2022-07-13 22:27:58,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:27:58,339 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 223 transitions. [2022-07-13 22:27:58,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-13 22:27:58,340 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 223 transitions. [2022-07-13 22:27:58,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 22:27:58,345 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:27:58,346 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:27:58,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:27:58,346 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:27:58,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:27:58,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1640985525, now seen corresponding path program 1 times [2022-07-13 22:27:58,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:27:58,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574750126] [2022-07-13 22:27:58,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:27:58,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:27:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:58,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:27:58,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:58,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:27:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:58,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:27:58,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:58,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:27:58,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:58,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:27:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:58,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 22:27:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:58,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 22:27:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:58,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 22:27:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:58,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 22:27:58,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:58,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:27:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:58,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:27:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:58,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 22:27:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:58,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:27:58,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:58,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:27:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:58,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 22:27:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:58,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 22:27:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:58,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 22:27:58,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:58,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 22:27:58,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:58,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 22:27:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:58,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 22:27:58,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:58,819 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2022-07-13 22:27:58,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:27:58,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574750126] [2022-07-13 22:27:58,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574750126] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:27:58,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639301543] [2022-07-13 22:27:58,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:27:58,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:27:58,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:27:58,823 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) [2022-07-13 22:27:58,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 22:27:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:27:59,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 2239 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 22:27:59,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:27:59,456 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-07-13 22:27:59,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:27:59,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639301543] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:27:59,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:27:59,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-13 22:27:59,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666110576] [2022-07-13 22:27:59,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:27:59,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:27:59,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:27:59,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:27:59,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-13 22:27:59,462 INFO L87 Difference]: Start difference. First operand 171 states and 223 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-13 22:27:59,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:27:59,768 INFO L93 Difference]: Finished difference Result 315 states and 417 transitions. [2022-07-13 22:27:59,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:27:59,769 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 124 [2022-07-13 22:27:59,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:27:59,775 INFO L225 Difference]: With dead ends: 315 [2022-07-13 22:27:59,775 INFO L226 Difference]: Without dead ends: 173 [2022-07-13 22:27:59,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:27:59,779 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 232 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 22:27:59,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 625 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 22:27:59,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-07-13 22:27:59,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-07-13 22:27:59,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 103 states have (on average 1.1650485436893203) internal successors, (120), 105 states have internal predecessors, (120), 53 states have call successors, (53), 16 states have call predecessors, (53), 16 states have return successors, (56), 51 states have call predecessors, (56), 51 states have call successors, (56) [2022-07-13 22:27:59,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 229 transitions. [2022-07-13 22:27:59,823 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 229 transitions. Word has length 124 [2022-07-13 22:27:59,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:27:59,823 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 229 transitions. [2022-07-13 22:27:59,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-13 22:27:59,824 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 229 transitions. [2022-07-13 22:27:59,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-13 22:27:59,827 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:27:59,827 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:27:59,850 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 22:28:00,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:00,035 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:28:00,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:28:00,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1623021021, now seen corresponding path program 1 times [2022-07-13 22:28:00,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:28:00,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216644072] [2022-07-13 22:28:00,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:00,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:28:00,109 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:28:00,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1796278376] [2022-07-13 22:28:00,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:00,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:00,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:28:00,111 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) [2022-07-13 22:28:00,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 22:28:00,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:00,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 2521 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 22:28:00,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:28:00,715 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-13 22:28:00,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:28:00,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:28:00,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216644072] [2022-07-13 22:28:00,716 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:28:00,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796278376] [2022-07-13 22:28:00,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796278376] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:28:00,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:28:00,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:28:00,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674313966] [2022-07-13 22:28:00,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:28:00,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:28:00,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:28:00,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:28:00,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:28:00,721 INFO L87 Difference]: Start difference. First operand 173 states and 229 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2022-07-13 22:28:01,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:28:01,072 INFO L93 Difference]: Finished difference Result 283 states and 374 transitions. [2022-07-13 22:28:01,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:28:01,073 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) Word has length 154 [2022-07-13 22:28:01,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:28:01,075 INFO L225 Difference]: With dead ends: 283 [2022-07-13 22:28:01,075 INFO L226 Difference]: Without dead ends: 173 [2022-07-13 22:28:01,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:28:01,077 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 249 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:28:01,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 748 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 22:28:01,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-07-13 22:28:01,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-07-13 22:28:01,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 103 states have (on average 1.1650485436893203) internal successors, (120), 105 states have internal predecessors, (120), 53 states have call successors, (53), 16 states have call predecessors, (53), 16 states have return successors, (53), 51 states have call predecessors, (53), 51 states have call successors, (53) [2022-07-13 22:28:01,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 226 transitions. [2022-07-13 22:28:01,105 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 226 transitions. Word has length 154 [2022-07-13 22:28:01,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:28:01,106 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 226 transitions. [2022-07-13 22:28:01,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2022-07-13 22:28:01,106 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 226 transitions. [2022-07-13 22:28:01,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-13 22:28:01,108 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:28:01,108 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:28:01,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 22:28:01,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-13 22:28:01,328 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:28:01,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:28:01,328 INFO L85 PathProgramCache]: Analyzing trace with hash 2016135159, now seen corresponding path program 2 times [2022-07-13 22:28:01,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:28:01,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930869772] [2022-07-13 22:28:01,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:01,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:28:01,418 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:28:01,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [837420861] [2022-07-13 22:28:01,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:28:01,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:01,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:28:01,420 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) [2022-07-13 22:28:01,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 22:28:02,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:28:02,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:28:02,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 2662 conjuncts, 93 conjunts are in the unsatisfiable core [2022-07-13 22:28:02,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:28:02,254 INFO L390 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 9 treesize of output 3 [2022-07-13 22:28:02,704 INFO L356 Elim1Store]: treesize reduction 120, result has 50.2 percent of original size [2022-07-13 22:28:02,705 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 31 select indices, 31 select index equivalence classes, 435 disjoint index pairs (out of 465 index pairs), introduced 31 new quantified variables, introduced 30 case distinctions, treesize of input 156 treesize of output 214