./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_clear_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_clear_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 602c22a5759f33fe3c7a18e3ef1531ea38defb370e298f7d0c16de4a5734f1a7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:27:57,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:27:57,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:27:57,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:27:57,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:27:57,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:27:57,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:27:57,911 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:27:57,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:27:57,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:27:57,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:27:57,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:27:57,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:27:57,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:27:57,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:27:57,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:27:57,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:27:57,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:27:57,925 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:27:57,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:27:57,930 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:27:57,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:27:57,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:27:57,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:27:57,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:27:57,937 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:27:57,937 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:27:57,937 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:27:57,938 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:27:57,939 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:27:57,939 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:27:57,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:27:57,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:27:57,942 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:27:57,942 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:27:57,943 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:27:57,943 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:27:57,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:27:57,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:27:57,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:27:57,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:27:57,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:27:57,946 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-13 22:27:57,971 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:27:57,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:27:57,972 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:27:57,972 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:27:57,973 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:27:57,973 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:27:57,973 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:27:57,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:27:57,974 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:27:57,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:27:57,974 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:27:57,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:27:57,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:27:57,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:27:57,975 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:27:57,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:27:57,975 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:27:57,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:27:57,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:27:57,976 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:27:57,977 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:27:57,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:27:57,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:27:57,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:27:57,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:27:57,977 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:27:57,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:27:57,978 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:27:57,978 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:27:57,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:27:57,978 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 602c22a5759f33fe3c7a18e3ef1531ea38defb370e298f7d0c16de4a5734f1a7 [2022-07-13 22:27:58,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:27:58,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:27:58,224 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:27:58,225 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:27:58,226 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:27:58,227 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness.i [2022-07-13 22:27:58,280 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/758cb0e08/a99fad6400854633934d58b171acddc3/FLAGd20680f4e [2022-07-13 22:27:58,893 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:27:58,894 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness.i [2022-07-13 22:27:58,921 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/758cb0e08/a99fad6400854633934d58b171acddc3/FLAGd20680f4e [2022-07-13 22:27:59,247 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/758cb0e08/a99fad6400854633934d58b171acddc3 [2022-07-13 22:27:59,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:27:59,251 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:27:59,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:27:59,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:27:59,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:27:59,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:27:59" (1/1) ... [2022-07-13 22:27:59,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fe6c1de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:27:59, skipping insertion in model container [2022-07-13 22:27:59,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:27:59" (1/1) ... [2022-07-13 22:27:59,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:27:59,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:27:59,513 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_clear_harness.i[4494,4507] [2022-07-13 22:27:59,519 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_clear_harness.i[4554,4567] [2022-07-13 22:27:59,927 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:27:59,978 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:59,979 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:59,979 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:59,980 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:59,980 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:59,989 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:59,991 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:59,992 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:59,993 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:59,994 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:59,995 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:59,995 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:27:59,995 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:00,174 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:28:00,175 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:28:00,175 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:28:00,176 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:28:00,177 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:28:00,178 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:28:00,178 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:28:00,179 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:28:00,179 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:28:00,181 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:28:00,262 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:00,266 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:00,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:28:00,376 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:28:00,393 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_clear_harness.i[4494,4507] [2022-07-13 22:28:00,393 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_clear_harness.i[4554,4567] [2022-07-13 22:28:00,431 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:28:00,453 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:00,454 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:00,454 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:00,455 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:00,455 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:00,459 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:00,460 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:00,461 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:00,461 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:00,462 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:00,462 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:00,463 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:00,463 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:00,486 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:28:00,486 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:28:00,487 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:28:00,487 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:28:00,488 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:28:00,489 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:28:00,489 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:28:00,490 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:28:00,490 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:28:00,490 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:28:00,505 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:00,516 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:00,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:28:00,658 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:28:00,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:00 WrapperNode [2022-07-13 22:28:00,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:28:00,660 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:28:00,660 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:28:00,660 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:28:00,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:00" (1/1) ... [2022-07-13 22:28:00,744 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:00" (1/1) ... [2022-07-13 22:28:00,794 INFO L137 Inliner]: procedures = 690, calls = 1579, calls flagged for inlining = 46, calls inlined = 6, statements flattened = 585 [2022-07-13 22:28:00,794 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:28:00,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:28:00,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:28:00,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:28:00,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:00" (1/1) ... [2022-07-13 22:28:00,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:00" (1/1) ... [2022-07-13 22:28:00,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:00" (1/1) ... [2022-07-13 22:28:00,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:00" (1/1) ... [2022-07-13 22:28:00,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:00" (1/1) ... [2022-07-13 22:28:00,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:00" (1/1) ... [2022-07-13 22:28:00,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:00" (1/1) ... [2022-07-13 22:28:00,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:28:00,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:28:00,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:28:00,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:28:00,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:00" (1/1) ... [2022-07-13 22:28:00,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:28:00,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:28:00,883 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 22:28:00,893 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 22:28:00,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:28:00,915 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-07-13 22:28:00,915 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-07-13 22:28:00,916 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-13 22:28:00,916 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-13 22:28:00,916 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-13 22:28:00,917 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-13 22:28:00,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:28:00,917 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-13 22:28:00,917 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-13 22:28:00,917 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-13 22:28:00,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-13 22:28:00,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 22:28:00,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:28:00,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 22:28:00,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:28:00,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:28:00,918 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-13 22:28:00,918 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-13 22:28:00,919 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-13 22:28:00,919 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-13 22:28:00,919 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 22:28:00,919 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 22:28:00,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:28:00,920 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_clear [2022-07-13 22:28:00,920 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_clear [2022-07-13 22:28:00,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 22:28:00,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-13 22:28:00,920 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-13 22:28:00,920 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-13 22:28:00,920 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-13 22:28:00,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-13 22:28:00,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:28:00,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:28:01,141 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:28:01,148 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:28:01,640 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:28:01,646 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:28:01,646 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 22:28:01,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:28:01 BoogieIcfgContainer [2022-07-13 22:28:01,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:28:01,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:28:01,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:28:01,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:28:01,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:27:59" (1/3) ... [2022-07-13 22:28:01,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c29406a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:28:01, skipping insertion in model container [2022-07-13 22:28:01,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:00" (2/3) ... [2022-07-13 22:28:01,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c29406a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:28:01, skipping insertion in model container [2022-07-13 22:28:01,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:28:01" (3/3) ... [2022-07-13 22:28:01,654 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_clear_harness.i [2022-07-13 22:28:01,663 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:28:01,663 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:28:01,713 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:28:01,720 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@3cfb5abc, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1fa4b784 [2022-07-13 22:28:01,721 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 22:28:01,724 INFO L276 IsEmpty]: Start isEmpty. Operand has 101 states, 63 states have (on average 1.1904761904761905) internal successors, (75), 64 states have internal predecessors, (75), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-13 22:28:01,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-13 22:28:01,733 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:28:01,733 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:28:01,734 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:28:01,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:28:01,739 INFO L85 PathProgramCache]: Analyzing trace with hash 118758327, now seen corresponding path program 1 times [2022-07-13 22:28:01,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:28:01,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908136780] [2022-07-13 22:28:01,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:01,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:28:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:02,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:28:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:02,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:28:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:02,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:28:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:02,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 22:28:02,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:02,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:28:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:02,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:28:02,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:02,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 22:28:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:02,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:28:02,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:02,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:28:02,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:02,242 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-13 22:28:02,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:28:02,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908136780] [2022-07-13 22:28:02,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908136780] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:28:02,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:28:02,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:28:02,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397096769] [2022-07-13 22:28:02,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:28:02,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:28:02,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:28:02,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:28:02,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:28:02,275 INFO L87 Difference]: Start difference. First operand has 101 states, 63 states have (on average 1.1904761904761905) internal successors, (75), 64 states have internal predecessors, (75), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-13 22:28:02,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:28:02,514 INFO L93 Difference]: Finished difference Result 205 states and 276 transitions. [2022-07-13 22:28:02,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:28:02,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 60 [2022-07-13 22:28:02,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:28:02,523 INFO L225 Difference]: With dead ends: 205 [2022-07-13 22:28:02,523 INFO L226 Difference]: Without dead ends: 106 [2022-07-13 22:28:02,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:28:02,538 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 24 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 22:28:02,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 146 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 22:28:02,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-07-13 22:28:02,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 96. [2022-07-13 22:28:02,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 59 states have (on average 1.1694915254237288) internal successors, (69), 60 states have internal predecessors, (69), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-07-13 22:28:02,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 118 transitions. [2022-07-13 22:28:02,583 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 118 transitions. Word has length 60 [2022-07-13 22:28:02,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:28:02,583 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 118 transitions. [2022-07-13 22:28:02,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-13 22:28:02,584 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 118 transitions. [2022-07-13 22:28:02,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-13 22:28:02,586 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:28:02,586 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:28:02,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:28:02,586 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:28:02,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:28:02,587 INFO L85 PathProgramCache]: Analyzing trace with hash 519821299, now seen corresponding path program 1 times [2022-07-13 22:28:02,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:28:02,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750184914] [2022-07-13 22:28:02,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:02,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:28:02,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:02,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:28:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:02,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:28:02,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:02,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:28:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:02,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 22:28:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:02,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:28:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:02,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:28:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:02,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 22:28:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:02,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:28:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:02,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:28:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:02,815 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 22:28:02,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:28:02,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750184914] [2022-07-13 22:28:02,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750184914] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:28:02,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886065193] [2022-07-13 22:28:02,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:02,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:02,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:28:02,818 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 22:28:02,819 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 22:28:03,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:03,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 2015 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 22:28:03,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:28:03,259 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 22:28:03,260 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:28:03,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886065193] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:28:03,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:28:03,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-07-13 22:28:03,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404511325] [2022-07-13 22:28:03,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:28:03,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:28:03,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:28:03,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:28:03,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:28:03,263 INFO L87 Difference]: Start difference. First operand 96 states and 118 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-13 22:28:03,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:28:03,439 INFO L93 Difference]: Finished difference Result 160 states and 199 transitions. [2022-07-13 22:28:03,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:28:03,439 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 60 [2022-07-13 22:28:03,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:28:03,440 INFO L225 Difference]: With dead ends: 160 [2022-07-13 22:28:03,440 INFO L226 Difference]: Without dead ends: 98 [2022-07-13 22:28:03,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-07-13 22:28:03,442 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 123 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:28:03,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 292 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:28:03,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-07-13 22:28:03,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-07-13 22:28:03,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 60 states have (on average 1.1666666666666667) internal successors, (70), 62 states have internal predecessors, (70), 25 states have call successors, (25), 11 states have call predecessors, (25), 12 states have return successors, (26), 24 states have call predecessors, (26), 24 states have call successors, (26) [2022-07-13 22:28:03,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 121 transitions. [2022-07-13 22:28:03,453 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 121 transitions. Word has length 60 [2022-07-13 22:28:03,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:28:03,453 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 121 transitions. [2022-07-13 22:28:03,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-13 22:28:03,454 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 121 transitions. [2022-07-13 22:28:03,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-13 22:28:03,455 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:28:03,455 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-07-13 22:28:03,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 22:28:03,670 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 22:28:03,670 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:28:03,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:28:03,671 INFO L85 PathProgramCache]: Analyzing trace with hash 682812913, now seen corresponding path program 1 times [2022-07-13 22:28:03,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:28:03,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334696221] [2022-07-13 22:28:03,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:03,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:28:03,771 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:28:03,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765367421] [2022-07-13 22:28:03,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:03,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:03,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:28:03,774 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 22:28:03,775 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 22:28:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:04,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 2151 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 22:28:04,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:28:04,130 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 22:28:04,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:28:04,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:28:04,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334696221] [2022-07-13 22:28:04,134 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:28:04,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765367421] [2022-07-13 22:28:04,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765367421] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:28:04,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:28:04,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:28:04,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282427484] [2022-07-13 22:28:04,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:28:04,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:28:04,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:28:04,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:28:04,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:28:04,137 INFO L87 Difference]: Start difference. First operand 98 states and 121 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 22:28:04,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:28:04,171 INFO L93 Difference]: Finished difference Result 167 states and 212 transitions. [2022-07-13 22:28:04,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:28:04,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 75 [2022-07-13 22:28:04,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:28:04,177 INFO L225 Difference]: With dead ends: 167 [2022-07-13 22:28:04,178 INFO L226 Difference]: Without dead ends: 103 [2022-07-13 22:28:04,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:28:04,181 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 10 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:28:04,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 341 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:28:04,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-07-13 22:28:04,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 100. [2022-07-13 22:28:04,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 62 states have (on average 1.1612903225806452) internal successors, (72), 64 states have internal predecessors, (72), 25 states have call successors, (25), 11 states have call predecessors, (25), 12 states have return successors, (26), 24 states have call predecessors, (26), 24 states have call successors, (26) [2022-07-13 22:28:04,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 123 transitions. [2022-07-13 22:28:04,194 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 123 transitions. Word has length 75 [2022-07-13 22:28:04,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:28:04,195 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 123 transitions. [2022-07-13 22:28:04,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 22:28:04,196 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 123 transitions. [2022-07-13 22:28:04,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-13 22:28:04,201 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:28:04,202 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-07-13 22:28:04,231 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 22:28:04,425 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 22:28:04,426 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:28:04,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:28:04,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1526818415, now seen corresponding path program 1 times [2022-07-13 22:28:04,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:28:04,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167607703] [2022-07-13 22:28:04,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:04,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:28:04,488 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:28:04,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1588030866] [2022-07-13 22:28:04,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:04,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:04,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:28:04,490 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 22:28:04,491 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 22:28:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:04,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 2156 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 22:28:04,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:28:04,899 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-13 22:28:04,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:28:04,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:28:04,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167607703] [2022-07-13 22:28:04,900 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:28:04,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588030866] [2022-07-13 22:28:04,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588030866] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:28:04,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:28:04,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 22:28:04,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025413644] [2022-07-13 22:28:04,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:28:04,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:28:04,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:28:04,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:28:04,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:28:04,902 INFO L87 Difference]: Start difference. First operand 100 states and 123 transitions. Second operand has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-13 22:28:05,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:28:05,092 INFO L93 Difference]: Finished difference Result 161 states and 196 transitions. [2022-07-13 22:28:05,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 22:28:05,093 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 75 [2022-07-13 22:28:05,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:28:05,096 INFO L225 Difference]: With dead ends: 161 [2022-07-13 22:28:05,096 INFO L226 Difference]: Without dead ends: 98 [2022-07-13 22:28:05,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-07-13 22:28:05,100 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 128 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:28:05,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 406 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:28:05,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-07-13 22:28:05,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-07-13 22:28:05,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 61 states have (on average 1.1475409836065573) internal successors, (70), 62 states have internal predecessors, (70), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-07-13 22:28:05,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 119 transitions. [2022-07-13 22:28:05,114 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 119 transitions. Word has length 75 [2022-07-13 22:28:05,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:28:05,115 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 119 transitions. [2022-07-13 22:28:05,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-13 22:28:05,115 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 119 transitions. [2022-07-13 22:28:05,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-13 22:28:05,117 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:28:05,117 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:28:05,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 22:28:05,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:05,342 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:28:05,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:28:05,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1686649477, now seen corresponding path program 1 times [2022-07-13 22:28:05,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:28:05,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843035844] [2022-07-13 22:28:05,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:05,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:28:05,383 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:28:05,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [573535285] [2022-07-13 22:28:05,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:05,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:05,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:28:05,413 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) [2022-07-13 22:28:05,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 22:28:05,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:05,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 2438 conjuncts, 71 conjunts are in the unsatisfiable core [2022-07-13 22:28:05,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:28:06,148 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_311 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_311))) (exists ((v_ArrVal_312 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_312) |c_#memory_$Pointer$.offset|)))) is different from true [2022-07-13 22:28:06,450 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 22:28:06,450 INFO L390 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 16 treesize of output 22 [2022-07-13 22:28:06,468 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 22:28:06,469 INFO L390 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 16 treesize of output 22 [2022-07-13 22:28:06,477 INFO L390 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 7 treesize of output 3 [2022-07-13 22:28:06,479 INFO L390 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 7 treesize of output 3 [2022-07-13 22:28:06,560 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 19 treesize of output 7 [2022-07-13 22:28:06,564 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 19 treesize of output 7 [2022-07-13 22:28:06,582 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 22:28:06,582 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:28:06,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:28:06,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843035844] [2022-07-13 22:28:06,583 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:28:06,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573535285] [2022-07-13 22:28:06,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573535285] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:28:06,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:28:06,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-13 22:28:06,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613330344] [2022-07-13 22:28:06,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:28:06,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-13 22:28:06,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:28:06,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-13 22:28:06,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=244, Unknown=21, NotChecked=32, Total=342 [2022-07-13 22:28:06,585 INFO L87 Difference]: Start difference. First operand 98 states and 119 transitions. Second operand has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 18 states have internal predecessors, (65), 8 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-07-13 22:28:07,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:28:07,521 INFO L93 Difference]: Finished difference Result 223 states and 302 transitions. [2022-07-13 22:28:07,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 22:28:07,522 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 18 states have internal predecessors, (65), 8 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 105 [2022-07-13 22:28:07,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:28:07,524 INFO L225 Difference]: With dead ends: 223 [2022-07-13 22:28:07,524 INFO L226 Difference]: Without dead ends: 171 [2022-07-13 22:28:07,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 85 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=569, Unknown=32, NotChecked=50, Total=756 [2022-07-13 22:28:07,525 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 97 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 1709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 704 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 22:28:07,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 641 Invalid, 1709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 954 Invalid, 0 Unknown, 704 Unchecked, 0.7s Time] [2022-07-13 22:28:07,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-07-13 22:28:07,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 143. [2022-07-13 22:28:07,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 90 states have (on average 1.1444444444444444) internal successors, (103), 94 states have internal predecessors, (103), 34 states have call successors, (34), 13 states have call predecessors, (34), 18 states have return successors, (57), 35 states have call predecessors, (57), 33 states have call successors, (57) [2022-07-13 22:28:07,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 194 transitions. [2022-07-13 22:28:07,552 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 194 transitions. Word has length 105 [2022-07-13 22:28:07,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:28:07,553 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 194 transitions. [2022-07-13 22:28:07,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 18 states have internal predecessors, (65), 8 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-07-13 22:28:07,553 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 194 transitions. [2022-07-13 22:28:07,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-13 22:28:07,565 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:28:07,567 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:28:07,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 22:28:07,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:07,778 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:28:07,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:28:07,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1827198087, now seen corresponding path program 1 times [2022-07-13 22:28:07,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:28:07,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294392523] [2022-07-13 22:28:07,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:07,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:28:07,832 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:28:07,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [524290084] [2022-07-13 22:28:07,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:07,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:07,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:28:07,834 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) [2022-07-13 22:28:07,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 22:28:08,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:09,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 2425 conjuncts, 283 conjunts are in the unsatisfiable core [2022-07-13 22:28:09,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:28:09,032 INFO L390 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 [2022-07-13 22:28:09,216 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 22:28:09,217 INFO L390 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-13 22:28:09,223 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 22:28:09,224 INFO L390 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-13 22:28:09,364 INFO L390 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 11 treesize of output 7 [2022-07-13 22:28:10,005 INFO L356 Elim1Store]: treesize reduction 53, result has 32.9 percent of original size [2022-07-13 22:28:10,005 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 53 [2022-07-13 22:28:10,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:28:10,014 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 28 [2022-07-13 22:28:28,243 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-13 22:28:28,244 INFO L390 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 [2022-07-13 22:28:33,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:28:33,429 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 22:28:33,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:28:33,431 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 22:28:33,441 INFO L356 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2022-07-13 22:28:33,442 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 46 [2022-07-13 22:28:33,459 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-13 22:28:33,460 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 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 [2022-07-13 22:28:58,535 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 7 proven. 64 refuted. 2 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-13 22:28:58,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:29:11,209 WARN L233 SmtUtils]: Spent 7.79s on a formula simplification that was a NOOP. DAG size: 75 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-13 22:29:23,127 WARN L233 SmtUtils]: Spent 11.55s on a formula simplification that was a NOOP. DAG size: 81 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-13 22:29:29,268 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|v_aws_array_list_is_valid_~#required_size~0.base_15| Int)) (let ((.cse0 (let ((.cse1 (select |c_#memory_int| c_aws_array_list_clear_~list.base))) (* (select .cse1 (+ c_aws_array_list_clear_~list.offset 24)) (select .cse1 (+ 16 c_aws_array_list_clear_~list.offset)))))) (<= (mod .cse0 18446744073709551616) (mod (select (select (store |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_15| (store (select |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_15|) 0 .cse0)) c_aws_array_list_clear_~list.base) (+ c_aws_array_list_clear_~list.offset 8)) 18446744073709551616)))) (forall ((|v_aws_array_list_is_valid_~#required_size~0.base_15| Int)) (let ((.cse3 (+ c_aws_array_list_clear_~list.offset 24))) (let ((.cse4 (let ((.cse5 (select |c_#memory_int| c_aws_array_list_clear_~list.base))) (* (select .cse5 .cse3) (select .cse5 (+ 16 c_aws_array_list_clear_~list.offset)))))) (let ((.cse2 (select (store |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_15| (store (select |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_15|) 0 .cse4)) c_aws_array_list_clear_~list.base))) (or (not (= (mod (select .cse2 .cse3) 18446744073709551616) 0)) (not (<= (mod .cse4 18446744073709551616) (mod (select .cse2 (+ c_aws_array_list_clear_~list.offset 8)) 18446744073709551616))))))))) is different from false [2022-07-13 22:29:29,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:29:29,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294392523] [2022-07-13 22:29:29,296 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:29:29,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524290084] [2022-07-13 22:29:29,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524290084] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:29:29,297 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:29:29,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2022-07-13 22:29:29,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899702060] [2022-07-13 22:29:29,297 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 22:29:29,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-07-13 22:29:29,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:29:29,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-07-13 22:29:29,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=2881, Unknown=20, NotChecked=108, Total=3192 [2022-07-13 22:29:29,302 INFO L87 Difference]: Start difference. First operand 143 states and 194 transitions. Second operand has 53 states, 44 states have (on average 1.5681818181818181) internal successors, (69), 40 states have internal predecessors, (69), 15 states have call successors, (16), 10 states have call predecessors, (16), 13 states have return successors, (14), 12 states have call predecessors, (14), 13 states have call successors, (14) [2022-07-13 22:29:43,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:29:43,982 INFO L93 Difference]: Finished difference Result 191 states and 256 transitions. [2022-07-13 22:29:43,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-07-13 22:29:43,983 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 44 states have (on average 1.5681818181818181) internal successors, (69), 40 states have internal predecessors, (69), 15 states have call successors, (16), 10 states have call predecessors, (16), 13 states have return successors, (14), 12 states have call predecessors, (14), 13 states have call successors, (14) Word has length 105 [2022-07-13 22:29:43,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:29:43,984 INFO L225 Difference]: With dead ends: 191 [2022-07-13 22:29:43,984 INFO L226 Difference]: Without dead ends: 189 [2022-07-13 22:29:43,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 52 SyntacticMatches, 4 SemanticMatches, 73 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1675 ImplicationChecksByTransitivity, 60.0s TimeCoverageRelationStatistics Valid=310, Invalid=5075, Unknown=21, NotChecked=144, Total=5550 [2022-07-13 22:29:43,986 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 88 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 1956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1256 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 22:29:43,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 1090 Invalid, 1956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 640 Invalid, 0 Unknown, 1256 Unchecked, 0.5s Time] [2022-07-13 22:29:43,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-07-13 22:29:44,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 188. [2022-07-13 22:29:44,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 120 states have (on average 1.125) internal successors, (135), 125 states have internal predecessors, (135), 42 states have call successors, (42), 21 states have call predecessors, (42), 25 states have return successors, (76), 41 states have call predecessors, (76), 41 states have call successors, (76) [2022-07-13 22:29:44,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 253 transitions. [2022-07-13 22:29:44,017 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 253 transitions. Word has length 105 [2022-07-13 22:29:44,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:29:44,018 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 253 transitions. [2022-07-13 22:29:44,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 44 states have (on average 1.5681818181818181) internal successors, (69), 40 states have internal predecessors, (69), 15 states have call successors, (16), 10 states have call predecessors, (16), 13 states have return successors, (14), 12 states have call predecessors, (14), 13 states have call successors, (14) [2022-07-13 22:29:44,018 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 253 transitions. [2022-07-13 22:29:44,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-13 22:29:44,019 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:29:44,019 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:29:44,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 22:29:44,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:29:44,231 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:29:44,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:29:44,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1756805470, now seen corresponding path program 1 times [2022-07-13 22:29:44,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:29:44,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456067640] [2022-07-13 22:29:44,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:29:44,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:29:44,295 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:29:44,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [74234756] [2022-07-13 22:29:44,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:29:44,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:29:44,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:29:44,297 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) [2022-07-13 22:29:44,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 22:29:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:29:44,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 2472 conjuncts, 43 conjunts are in the unsatisfiable core [2022-07-13 22:29:44,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:29:44,665 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 21 treesize of output 9 [2022-07-13 22:29:44,865 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-13 22:29:44,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:29:45,433 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-13 22:29:45,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:29:45,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456067640] [2022-07-13 22:29:45,433 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:29:45,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74234756] [2022-07-13 22:29:45,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74234756] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:29:45,433 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:29:45,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 26 [2022-07-13 22:29:45,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791219285] [2022-07-13 22:29:45,434 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:29:45,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-13 22:29:45,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:29:45,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-13 22:29:45,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=595, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:29:45,435 INFO L87 Difference]: Start difference. First operand 188 states and 253 transitions. Second operand has 26 states, 21 states have (on average 4.523809523809524) internal successors, (95), 19 states have internal predecessors, (95), 7 states have call successors, (23), 3 states have call predecessors, (23), 8 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) [2022-07-13 22:29:46,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:29:46,036 INFO L93 Difference]: Finished difference Result 282 states and 382 transitions. [2022-07-13 22:29:46,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 22:29:46,037 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 4.523809523809524) internal successors, (95), 19 states have internal predecessors, (95), 7 states have call successors, (23), 3 states have call predecessors, (23), 8 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) Word has length 123 [2022-07-13 22:29:46,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:29:46,038 INFO L225 Difference]: With dead ends: 282 [2022-07-13 22:29:46,038 INFO L226 Difference]: Without dead ends: 194 [2022-07-13 22:29:46,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 219 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2022-07-13 22:29:46,039 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 24 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 2545 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 22:29:46,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 2545 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 22:29:46,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-07-13 22:29:46,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 180. [2022-07-13 22:29:46,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 116 states have (on average 1.1206896551724137) internal successors, (130), 121 states have internal predecessors, (130), 39 states have call successors, (39), 21 states have call predecessors, (39), 24 states have return successors, (63), 37 states have call predecessors, (63), 38 states have call successors, (63) [2022-07-13 22:29:46,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 232 transitions. [2022-07-13 22:29:46,053 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 232 transitions. Word has length 123 [2022-07-13 22:29:46,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:29:46,054 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 232 transitions. [2022-07-13 22:29:46,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 4.523809523809524) internal successors, (95), 19 states have internal predecessors, (95), 7 states have call successors, (23), 3 states have call predecessors, (23), 8 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) [2022-07-13 22:29:46,055 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 232 transitions. [2022-07-13 22:29:46,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-13 22:29:46,068 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:29:46,068 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:29:46,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 22:29:46,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:29:46,269 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:29:46,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:29:46,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1186176802, now seen corresponding path program 1 times [2022-07-13 22:29:46,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:29:46,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882603699] [2022-07-13 22:29:46,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:29:46,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:29:46,329 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:29:46,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1806064240] [2022-07-13 22:29:46,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:29:46,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:29:46,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:29:46,330 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) [2022-07-13 22:29:46,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 22:29:46,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:29:46,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 2464 conjuncts, 57 conjunts are in the unsatisfiable core [2022-07-13 22:29:46,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:29:46,705 INFO L390 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 [2022-07-13 22:29:46,784 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-13 22:29:46,784 INFO L390 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 1 case distinctions, treesize of input 12 treesize of output 14 [2022-07-13 22:29:46,803 INFO L390 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 13 treesize of output 9 [2022-07-13 22:29:46,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:29:46,928 INFO L390 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 33 treesize of output 26 [2022-07-13 22:29:47,023 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_648 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_648) |c_#memory_$Pointer$.base|)) is different from true [2022-07-13 22:29:47,164 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 54 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-13 22:29:47,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:29:47,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:29:47,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882603699] [2022-07-13 22:29:47,337 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:29:47,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806064240] [2022-07-13 22:29:47,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806064240] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:29:47,337 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:29:47,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2022-07-13 22:29:47,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335474811] [2022-07-13 22:29:47,338 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 22:29:47,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-13 22:29:47,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:29:47,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-13 22:29:47,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=4, NotChecked=38, Total=462 [2022-07-13 22:29:47,339 INFO L87 Difference]: Start difference. First operand 180 states and 232 transitions. Second operand has 21 states, 20 states have (on average 3.0) internal successors, (60), 18 states have internal predecessors, (60), 8 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (14), 7 states have call predecessors, (14), 8 states have call successors, (14) [2022-07-13 22:29:47,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:29:47,788 INFO L93 Difference]: Finished difference Result 276 states and 353 transitions. [2022-07-13 22:29:47,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-13 22:29:47,788 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.0) internal successors, (60), 18 states have internal predecessors, (60), 8 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (14), 7 states have call predecessors, (14), 8 states have call successors, (14) Word has length 111 [2022-07-13 22:29:47,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:29:47,789 INFO L225 Difference]: With dead ends: 276 [2022-07-13 22:29:47,789 INFO L226 Difference]: Without dead ends: 180 [2022-07-13 22:29:47,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 148 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=548, Unknown=10, NotChecked=48, Total=702 [2022-07-13 22:29:47,790 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 73 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 429 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 22:29:47,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 517 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 583 Invalid, 0 Unknown, 429 Unchecked, 0.4s Time] [2022-07-13 22:29:47,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-07-13 22:29:47,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2022-07-13 22:29:47,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 116 states have (on average 1.1206896551724137) internal successors, (130), 121 states have internal predecessors, (130), 39 states have call successors, (39), 21 states have call predecessors, (39), 24 states have return successors, (62), 37 states have call predecessors, (62), 38 states have call successors, (62) [2022-07-13 22:29:47,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 231 transitions. [2022-07-13 22:29:47,800 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 231 transitions. Word has length 111 [2022-07-13 22:29:47,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:29:47,800 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 231 transitions. [2022-07-13 22:29:47,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.0) internal successors, (60), 18 states have internal predecessors, (60), 8 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (14), 7 states have call predecessors, (14), 8 states have call successors, (14) [2022-07-13 22:29:47,800 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 231 transitions. [2022-07-13 22:29:47,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-13 22:29:47,801 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:29:47,801 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:29:47,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 22:29:48,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:29:48,002 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:29:48,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:29:48,002 INFO L85 PathProgramCache]: Analyzing trace with hash -39744083, now seen corresponding path program 1 times [2022-07-13 22:29:48,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:29:48,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821315499] [2022-07-13 22:29:48,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:29:48,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:29:48,059 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:29:48,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [941210025] [2022-07-13 22:29:48,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:29:48,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:29:48,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:29:48,061 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) [2022-07-13 22:29:48,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 22:29:48,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:29:48,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 2438 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 22:29:48,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:29:48,454 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-13 22:29:48,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:29:48,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:29:48,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821315499] [2022-07-13 22:29:48,454 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:29:48,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941210025] [2022-07-13 22:29:48,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941210025] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:29:48,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:29:48,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:29:48,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081378641] [2022-07-13 22:29:48,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:29:48,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:29:48,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:29:48,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:29:48,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:29:48,456 INFO L87 Difference]: Start difference. First operand 180 states and 231 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 22:29:48,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:29:48,632 INFO L93 Difference]: Finished difference Result 278 states and 384 transitions. [2022-07-13 22:29:48,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:29:48,633 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 107 [2022-07-13 22:29:48,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:29:48,635 INFO L225 Difference]: With dead ends: 278 [2022-07-13 22:29:48,635 INFO L226 Difference]: Without dead ends: 190 [2022-07-13 22:29:48,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:29:48,637 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 7 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:29:48,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 421 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:29:48,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-07-13 22:29:48,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 182. [2022-07-13 22:29:48,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 118 states have (on average 1.11864406779661) internal successors, (132), 123 states have internal predecessors, (132), 39 states have call successors, (39), 21 states have call predecessors, (39), 24 states have return successors, (62), 37 states have call predecessors, (62), 38 states have call successors, (62) [2022-07-13 22:29:48,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 233 transitions. [2022-07-13 22:29:48,665 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 233 transitions. Word has length 107 [2022-07-13 22:29:48,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:29:48,666 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 233 transitions. [2022-07-13 22:29:48,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 22:29:48,666 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 233 transitions. [2022-07-13 22:29:48,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-13 22:29:48,667 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:29:48,667 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 22:29:48,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-13 22:29:48,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-13 22:29:48,875 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:29:48,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:29:48,876 INFO L85 PathProgramCache]: Analyzing trace with hash 988935645, now seen corresponding path program 1 times [2022-07-13 22:29:48,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:29:48,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914975917] [2022-07-13 22:29:48,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:29:48,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:29:48,919 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:29:48,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [695602985] [2022-07-13 22:29:48,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:29:48,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:29:48,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:29:48,920 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) [2022-07-13 22:29:48,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 22:29:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:29:49,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 2447 conjuncts, 32 conjunts are in the unsatisfiable core [2022-07-13 22:29:49,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:29:49,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:29:49,281 INFO L390 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 35 treesize of output 34 [2022-07-13 22:29:49,287 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 22:29:49,288 INFO L390 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 35 treesize of output 34 [2022-07-13 22:29:49,469 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-13 22:29:49,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:29:49,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:29:49,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914975917] [2022-07-13 22:29:49,469 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:29:49,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695602985] [2022-07-13 22:29:49,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695602985] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:29:49,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:29:49,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:29:49,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621350323] [2022-07-13 22:29:49,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:29:49,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:29:49,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:29:49,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:29:49,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:29:49,471 INFO L87 Difference]: Start difference. First operand 182 states and 233 transitions. Second operand has 9 states, 8 states have (on average 7.0) internal successors, (56), 9 states have internal predecessors, (56), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-13 22:29:50,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:29:50,061 INFO L93 Difference]: Finished difference Result 262 states and 334 transitions. [2022-07-13 22:29:50,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:29:50,061 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 9 states have internal predecessors, (56), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 113 [2022-07-13 22:29:50,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:29:50,064 INFO L225 Difference]: With dead ends: 262 [2022-07-13 22:29:50,064 INFO L226 Difference]: Without dead ends: 189 [2022-07-13 22:29:50,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-07-13 22:29:50,065 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 49 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 22:29:50,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 424 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 22:29:50,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-07-13 22:29:50,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 183. [2022-07-13 22:29:50,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 118 states have (on average 1.11864406779661) internal successors, (132), 124 states have internal predecessors, (132), 40 states have call successors, (40), 21 states have call predecessors, (40), 24 states have return successors, (65), 37 states have call predecessors, (65), 39 states have call successors, (65) [2022-07-13 22:29:50,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 237 transitions. [2022-07-13 22:29:50,074 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 237 transitions. Word has length 113 [2022-07-13 22:29:50,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:29:50,074 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 237 transitions. [2022-07-13 22:29:50,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 9 states have internal predecessors, (56), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-13 22:29:50,075 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 237 transitions. [2022-07-13 22:29:50,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-13 22:29:50,076 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:29:50,076 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:29:50,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-13 22:29:50,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-13 22:29:50,287 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:29:50,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:29:50,288 INFO L85 PathProgramCache]: Analyzing trace with hash -114998613, now seen corresponding path program 1 times [2022-07-13 22:29:50,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:29:50,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340368701] [2022-07-13 22:29:50,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:29:50,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:29:50,327 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:29:50,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2035963615] [2022-07-13 22:29:50,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:29:50,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:29:50,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:29:50,329 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) [2022-07-13 22:29:50,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 22:29:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:29:50,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 2443 conjuncts, 89 conjunts are in the unsatisfiable core [2022-07-13 22:29:50,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:29:50,693 INFO L390 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 [2022-07-13 22:29:50,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:29:50,993 INFO L390 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 21 treesize of output 20 [2022-07-13 22:29:51,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:29:51,002 INFO L390 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 21 treesize of output 20 [2022-07-13 22:29:51,124 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1002 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1002))) (exists ((v_ArrVal_1003 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1003) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-13 22:29:51,509 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 53 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-13 22:29:51,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:29:52,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:29:52,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340368701] [2022-07-13 22:29:52,078 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:29:52,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035963615] [2022-07-13 22:29:52,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035963615] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:29:52,078 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:29:52,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2022-07-13 22:29:52,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021861645] [2022-07-13 22:29:52,079 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 22:29:52,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-13 22:29:52,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:29:52,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-13 22:29:52,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=569, Unknown=11, NotChecked=48, Total=702 [2022-07-13 22:29:52,080 INFO L87 Difference]: Start difference. First operand 183 states and 237 transitions. Second operand has 21 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 7 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2022-07-13 22:29:52,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:29:52,455 INFO L93 Difference]: Finished difference Result 274 states and 360 transitions. [2022-07-13 22:29:52,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 22:29:52,456 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 7 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) Word has length 107 [2022-07-13 22:29:52,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:29:52,457 INFO L225 Difference]: With dead ends: 274 [2022-07-13 22:29:52,457 INFO L226 Difference]: Without dead ends: 187 [2022-07-13 22:29:52,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 134 SyntacticMatches, 7 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=106, Invalid=817, Unknown=11, NotChecked=58, Total=992 [2022-07-13 22:29:52,458 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 43 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 660 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:29:52,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 566 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 382 Invalid, 0 Unknown, 660 Unchecked, 0.3s Time] [2022-07-13 22:29:52,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-07-13 22:29:52,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2022-07-13 22:29:52,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 121 states have (on average 1.115702479338843) internal successors, (135), 128 states have internal predecessors, (135), 40 states have call successors, (40), 21 states have call predecessors, (40), 25 states have return successors, (74), 37 states have call predecessors, (74), 39 states have call successors, (74) [2022-07-13 22:29:52,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 249 transitions. [2022-07-13 22:29:52,472 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 249 transitions. Word has length 107 [2022-07-13 22:29:52,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:29:52,472 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 249 transitions. [2022-07-13 22:29:52,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 7 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2022-07-13 22:29:52,472 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 249 transitions. [2022-07-13 22:29:52,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-13 22:29:52,473 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:29:52,474 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:29:52,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-13 22:29:52,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-13 22:29:52,691 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:29:52,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:29:52,692 INFO L85 PathProgramCache]: Analyzing trace with hash -434110869, now seen corresponding path program 2 times [2022-07-13 22:29:52,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:29:52,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901040983] [2022-07-13 22:29:52,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:29:52,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:29:52,735 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:29:52,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1280258897] [2022-07-13 22:29:52,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:29:52,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:29:52,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:29:52,737 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) [2022-07-13 22:29:52,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-13 22:29:53,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:29:53,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:29:53,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 2443 conjuncts, 52 conjunts are in the unsatisfiable core [2022-07-13 22:29:53,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:29:53,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:29:53,793 INFO L390 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 35 treesize of output 34 [2022-07-13 22:29:53,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:29:53,798 INFO L390 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 35 treesize of output 34 [2022-07-13 22:29:55,886 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1140 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1139 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1139)) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1140))))) is different from true [2022-07-13 22:30:09,507 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-13 22:30:09,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:30:09,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:30:09,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901040983] [2022-07-13 22:30:09,508 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:30:09,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280258897] [2022-07-13 22:30:09,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280258897] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:30:09,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:30:09,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-13 22:30:09,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076644804] [2022-07-13 22:30:09,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:30:09,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-13 22:30:09,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:30:09,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-13 22:30:09,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=176, Unknown=3, NotChecked=26, Total=240 [2022-07-13 22:30:09,510 INFO L87 Difference]: Start difference. First operand 187 states and 249 transitions. Second operand has 16 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-07-13 22:30:09,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:30:09,991 INFO L93 Difference]: Finished difference Result 283 states and 370 transitions. [2022-07-13 22:30:09,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:30:09,992 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 107 [2022-07-13 22:30:09,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:30:09,993 INFO L225 Difference]: With dead ends: 283 [2022-07-13 22:30:09,993 INFO L226 Difference]: Without dead ends: 206 [2022-07-13 22:30:09,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=45, Invalid=228, Unknown=3, NotChecked=30, Total=306 [2022-07-13 22:30:09,994 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 75 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 638 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 22:30:09,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 548 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 630 Invalid, 0 Unknown, 638 Unchecked, 0.4s Time] [2022-07-13 22:30:09,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-07-13 22:30:10,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 187. [2022-07-13 22:30:10,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 121 states have (on average 1.115702479338843) internal successors, (135), 128 states have internal predecessors, (135), 40 states have call successors, (40), 21 states have call predecessors, (40), 25 states have return successors, (73), 37 states have call predecessors, (73), 39 states have call successors, (73) [2022-07-13 22:30:10,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 248 transitions. [2022-07-13 22:30:10,004 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 248 transitions. Word has length 107 [2022-07-13 22:30:10,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:30:10,004 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 248 transitions. [2022-07-13 22:30:10,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-07-13 22:30:10,005 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 248 transitions. [2022-07-13 22:30:10,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-13 22:30:10,006 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:30:10,006 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:30:10,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-13 22:30:10,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-13 22:30:10,210 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:30:10,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:30:10,210 INFO L85 PathProgramCache]: Analyzing trace with hash -293562259, now seen corresponding path program 1 times [2022-07-13 22:30:10,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:30:10,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152119233] [2022-07-13 22:30:10,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:30:10,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:30:10,248 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:30:10,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2065032370] [2022-07-13 22:30:10,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:30:10,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:30:10,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:30:10,249 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) [2022-07-13 22:30:10,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-13 22:30:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:10,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 2430 conjuncts, 114 conjunts are in the unsatisfiable core [2022-07-13 22:30:10,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:30:10,747 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 19 treesize of output 7 [2022-07-13 22:30:10,752 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 19 treesize of output 7 [2022-07-13 22:30:11,186 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_1244 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1244) |c_#memory_int|)) (exists ((v_ArrVal_1245 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1245))))) is different from true [2022-07-13 22:30:11,671 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 43 treesize of output 31 [2022-07-13 22:30:11,675 INFO L390 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 0 case distinctions, treesize of input 16 treesize of output 13 [2022-07-13 22:30:11,677 INFO L390 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 7 treesize of output 3 [2022-07-13 22:30:11,679 INFO L390 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 10 treesize of output 6 [2022-07-13 22:30:11,771 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 31 treesize of output 19 [2022-07-13 22:30:11,773 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 25 treesize of output 13 [2022-07-13 22:30:11,805 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 49 proven. 25 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-13 22:30:11,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:30:12,808 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-13 22:30:12,808 INFO L390 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 30 treesize of output 25 [2022-07-13 22:30:13,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:30:13,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152119233] [2022-07-13 22:30:13,084 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:30:13,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065032370] [2022-07-13 22:30:13,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065032370] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:30:13,084 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:30:13,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2022-07-13 22:30:13,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148552284] [2022-07-13 22:30:13,084 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 22:30:13,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-13 22:30:13,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:30:13,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-13 22:30:13,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1667, Unknown=10, NotChecked=82, Total=1892 [2022-07-13 22:30:13,085 INFO L87 Difference]: Start difference. First operand 187 states and 248 transitions. Second operand has 30 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 27 states have internal predecessors, (70), 11 states have call successors, (17), 6 states have call predecessors, (17), 8 states have return successors, (15), 10 states have call predecessors, (15), 11 states have call successors, (15) [2022-07-13 22:30:14,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:30:14,881 INFO L93 Difference]: Finished difference Result 295 states and 395 transitions. [2022-07-13 22:30:14,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-07-13 22:30:14,887 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 27 states have internal predecessors, (70), 11 states have call successors, (17), 6 states have call predecessors, (17), 8 states have return successors, (15), 10 states have call predecessors, (15), 11 states have call successors, (15) Word has length 107 [2022-07-13 22:30:14,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:30:14,889 INFO L225 Difference]: With dead ends: 295 [2022-07-13 22:30:14,889 INFO L226 Difference]: Without dead ends: 208 [2022-07-13 22:30:14,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 102 SyntacticMatches, 4 SemanticMatches, 65 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=331, Invalid=3938, Unknown=25, NotChecked=128, Total=4422 [2022-07-13 22:30:14,893 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 116 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 2174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 977 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 22:30:14,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 870 Invalid, 2174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1140 Invalid, 0 Unknown, 977 Unchecked, 0.8s Time] [2022-07-13 22:30:14,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-07-13 22:30:14,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 202. [2022-07-13 22:30:14,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 130 states have (on average 1.1076923076923078) internal successors, (144), 136 states have internal predecessors, (144), 45 states have call successors, (45), 24 states have call predecessors, (45), 26 states have return successors, (81), 41 states have call predecessors, (81), 44 states have call successors, (81) [2022-07-13 22:30:14,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 270 transitions. [2022-07-13 22:30:14,906 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 270 transitions. Word has length 107 [2022-07-13 22:30:14,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:30:14,907 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 270 transitions. [2022-07-13 22:30:14,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 27 states have internal predecessors, (70), 11 states have call successors, (17), 6 states have call predecessors, (17), 8 states have return successors, (15), 10 states have call predecessors, (15), 11 states have call successors, (15) [2022-07-13 22:30:14,908 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 270 transitions. [2022-07-13 22:30:14,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-13 22:30:14,909 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:30:14,909 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2022-07-13 22:30:14,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-13 22:30:15,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-13 22:30:15,127 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:30:15,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:30:15,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1296096621, now seen corresponding path program 1 times [2022-07-13 22:30:15,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:30:15,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033200523] [2022-07-13 22:30:15,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:30:15,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:30:15,181 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:30:15,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [147667207] [2022-07-13 22:30:15,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:30:15,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:30:15,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:30:15,196 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) [2022-07-13 22:30:15,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-13 22:30:15,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:15,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 2430 conjuncts, 81 conjunts are in the unsatisfiable core [2022-07-13 22:30:15,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:30:15,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:30:15,689 INFO L390 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 21 treesize of output 20 [2022-07-13 22:30:15,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:30:15,692 INFO L390 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 21 treesize of output 20 [2022-07-13 22:30:17,785 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1371 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1373 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1371))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1373)) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-13 22:30:52,626 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 22:30:52,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:30:52,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:30:52,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033200523] [2022-07-13 22:30:52,627 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:30:52,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147667207] [2022-07-13 22:30:52,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147667207] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:30:52,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:30:52,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-13 22:30:52,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132463527] [2022-07-13 22:30:52,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:30:52,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-13 22:30:52,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:30:52,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-13 22:30:52,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=319, Unknown=11, NotChecked=36, Total=420 [2022-07-13 22:30:52,629 INFO L87 Difference]: Start difference. First operand 202 states and 270 transitions. Second operand has 21 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 20 states have internal predecessors, (58), 7 states have call successors, (15), 4 states have call predecessors, (15), 6 states have return successors, (13), 5 states have call predecessors, (13), 7 states have call successors, (13) [2022-07-13 22:30:59,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:30:59,116 INFO L93 Difference]: Finished difference Result 297 states and 400 transitions. [2022-07-13 22:30:59,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 22:30:59,116 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 20 states have internal predecessors, (58), 7 states have call successors, (15), 4 states have call predecessors, (15), 6 states have return successors, (13), 5 states have call predecessors, (13), 7 states have call successors, (13) Word has length 107 [2022-07-13 22:30:59,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:30:59,117 INFO L225 Difference]: With dead ends: 297 [2022-07-13 22:30:59,117 INFO L226 Difference]: Without dead ends: 206 [2022-07-13 22:30:59,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 43.0s TimeCoverageRelationStatistics Valid=76, Invalid=466, Unknown=14, NotChecked=44, Total=600 [2022-07-13 22:30:59,119 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 79 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 710 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:30:59,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 520 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 513 Invalid, 0 Unknown, 710 Unchecked, 0.3s Time] [2022-07-13 22:30:59,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-07-13 22:30:59,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2022-07-13 22:30:59,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 133 states have (on average 1.105263157894737) internal successors, (147), 140 states have internal predecessors, (147), 45 states have call successors, (45), 24 states have call predecessors, (45), 27 states have return successors, (91), 41 states have call predecessors, (91), 44 states have call successors, (91) [2022-07-13 22:30:59,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 283 transitions. [2022-07-13 22:30:59,129 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 283 transitions. Word has length 107 [2022-07-13 22:30:59,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:30:59,130 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 283 transitions. [2022-07-13 22:30:59,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 20 states have internal predecessors, (58), 7 states have call successors, (15), 4 states have call predecessors, (15), 6 states have return successors, (13), 5 states have call predecessors, (13), 7 states have call successors, (13) [2022-07-13 22:30:59,130 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 283 transitions. [2022-07-13 22:30:59,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-13 22:30:59,131 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:30:59,131 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:30:59,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-13 22:30:59,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-13 22:30:59,347 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:30:59,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:30:59,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1934802821, now seen corresponding path program 1 times [2022-07-13 22:30:59,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:30:59,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111500456] [2022-07-13 22:30:59,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:30:59,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:30:59,393 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:30:59,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [53301369] [2022-07-13 22:30:59,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:30:59,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:30:59,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:30:59,395 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) [2022-07-13 22:30:59,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-13 22:30:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:59,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 2434 conjuncts, 55 conjunts are in the unsatisfiable core [2022-07-13 22:30:59,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:30:59,854 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 15 treesize of output 7 [2022-07-13 22:30:59,857 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 15 treesize of output 7 [2022-07-13 22:30:59,995 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 50 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-13 22:30:59,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:31:00,550 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-13 22:31:00,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:31:00,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111500456] [2022-07-13 22:31:00,551 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:31:00,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53301369] [2022-07-13 22:31:00,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53301369] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:31:00,551 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:31:00,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 26 [2022-07-13 22:31:00,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265132434] [2022-07-13 22:31:00,551 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:31:00,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-13 22:31:00,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:31:00,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-13 22:31:00,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=588, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:31:00,553 INFO L87 Difference]: Start difference. First operand 206 states and 283 transitions. Second operand has 26 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 19 states have internal predecessors, (94), 7 states have call successors, (24), 4 states have call predecessors, (24), 8 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) [2022-07-13 22:31:00,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:31:00,985 INFO L93 Difference]: Finished difference Result 315 states and 421 transitions. [2022-07-13 22:31:00,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 22:31:00,986 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 19 states have internal predecessors, (94), 7 states have call successors, (24), 4 states have call predecessors, (24), 8 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) Word has length 113 [2022-07-13 22:31:00,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:31:00,987 INFO L225 Difference]: With dead ends: 315 [2022-07-13 22:31:00,987 INFO L226 Difference]: Without dead ends: 184 [2022-07-13 22:31:00,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 198 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=956, Unknown=0, NotChecked=0, Total=1056 [2022-07-13 22:31:00,988 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 43 mSDsluCounter, 1941 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 2061 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:31:00,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 2061 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 425 Invalid, 0 Unknown, 33 Unchecked, 0.3s Time] [2022-07-13 22:31:00,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-07-13 22:31:01,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2022-07-13 22:31:01,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 121 states have (on average 1.115702479338843) internal successors, (135), 128 states have internal predecessors, (135), 37 states have call successors, (37), 20 states have call predecessors, (37), 25 states have return successors, (66), 35 states have call predecessors, (66), 36 states have call successors, (66) [2022-07-13 22:31:01,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 238 transitions. [2022-07-13 22:31:01,002 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 238 transitions. Word has length 113 [2022-07-13 22:31:01,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:31:01,002 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 238 transitions. [2022-07-13 22:31:01,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 19 states have internal predecessors, (94), 7 states have call successors, (24), 4 states have call predecessors, (24), 8 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) [2022-07-13 22:31:01,002 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 238 transitions. [2022-07-13 22:31:01,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-13 22:31:01,003 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:31:01,004 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2022-07-13 22:31:01,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-13 22:31:01,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:31:01,211 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:31:01,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:31:01,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1946171693, now seen corresponding path program 2 times [2022-07-13 22:31:01,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:31:01,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525642457] [2022-07-13 22:31:01,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:31:01,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:31:01,246 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:31:01,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [768632065] [2022-07-13 22:31:01,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:31:01,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:31:01,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:31:01,248 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) [2022-07-13 22:31:01,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-13 22:31:02,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:31:02,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:31:02,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 2430 conjuncts, 45 conjunts are in the unsatisfiable core [2022-07-13 22:31:02,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:31:02,285 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-13 22:31:02,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:31:02,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:31:02,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525642457] [2022-07-13 22:31:02,285 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:31:02,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768632065] [2022-07-13 22:31:02,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768632065] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:31:02,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:31:02,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-13 22:31:02,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807818726] [2022-07-13 22:31:02,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:31:02,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 22:31:02,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:31:02,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 22:31:02,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-13 22:31:02,287 INFO L87 Difference]: Start difference. First operand 184 states and 238 transitions. Second operand has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 10 states have internal predecessors, (63), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) [2022-07-13 22:31:02,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:31:02,750 INFO L93 Difference]: Finished difference Result 297 states and 388 transitions. [2022-07-13 22:31:02,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:31:02,751 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 10 states have internal predecessors, (63), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) Word has length 107 [2022-07-13 22:31:02,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:31:02,752 INFO L225 Difference]: With dead ends: 297 [2022-07-13 22:31:02,752 INFO L226 Difference]: Without dead ends: 215 [2022-07-13 22:31:02,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-07-13 22:31:02,753 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 53 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:31:02,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 903 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 391 Invalid, 0 Unknown, 48 Unchecked, 0.3s Time] [2022-07-13 22:31:02,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-07-13 22:31:02,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 189. [2022-07-13 22:31:02,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 124 states have (on average 1.1129032258064515) internal successors, (138), 131 states have internal predecessors, (138), 38 states have call successors, (38), 21 states have call predecessors, (38), 26 states have return successors, (67), 36 states have call predecessors, (67), 37 states have call successors, (67) [2022-07-13 22:31:02,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 243 transitions. [2022-07-13 22:31:02,765 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 243 transitions. Word has length 107 [2022-07-13 22:31:02,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:31:02,765 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 243 transitions. [2022-07-13 22:31:02,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 10 states have internal predecessors, (63), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) [2022-07-13 22:31:02,765 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 243 transitions. [2022-07-13 22:31:02,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-13 22:31:02,767 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:31:02,767 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:31:02,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-13 22:31:02,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-13 22:31:02,983 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:31:02,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:31:02,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1815581560, now seen corresponding path program 1 times [2022-07-13 22:31:02,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:31:02,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711886169] [2022-07-13 22:31:02,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:31:02,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:31:03,021 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:31:03,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1587373851] [2022-07-13 22:31:03,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:31:03,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:31:03,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:31:03,022 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) [2022-07-13 22:31:03,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-13 22:31:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:31:03,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 2469 conjuncts, 99 conjunts are in the unsatisfiable core [2022-07-13 22:31:03,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:31:03,455 INFO L390 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 [2022-07-13 22:31:03,538 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-13 22:31:03,538 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 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 [2022-07-13 22:31:03,562 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2022-07-13 22:31:03,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:31:03,651 INFO L390 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 32 treesize of output 25 [2022-07-13 22:31:03,727 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1690 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1690) |c_#memory_$Pointer$.base|)) is different from true [2022-07-13 22:31:03,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:31:03,780 INFO L390 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 27 treesize of output 27 [2022-07-13 22:31:03,786 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-13 22:31:03,786 INFO L390 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 [2022-07-13 22:31:12,031 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1692 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1692)) |c_#memory_$Pointer$.base|)) is different from true [2022-07-13 22:31:29,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:31:29,622 INFO L390 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 32 treesize of output 25 [2022-07-13 22:31:29,625 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 54 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 3 not checked. [2022-07-13 22:31:29,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:31:30,957 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_102| Int) (v_ArrVal_1699 Int)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_102| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_102|) 0 v_ArrVal_1699)) c_aws_array_list_clear_~list.base) (+ 32 c_aws_array_list_clear_~list.offset)) 0))) is different from false [2022-07-13 22:31:30,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:31:30,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711886169] [2022-07-13 22:31:30,959 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:31:30,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587373851] [2022-07-13 22:31:30,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587373851] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:31:30,959 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:31:30,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2022-07-13 22:31:30,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735177324] [2022-07-13 22:31:30,959 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 22:31:30,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-13 22:31:30,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:31:30,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-13 22:31:30,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=716, Unknown=13, NotChecked=168, Total=992 [2022-07-13 22:31:30,961 INFO L87 Difference]: Start difference. First operand 189 states and 243 transitions. Second operand has 29 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 26 states have internal predecessors, (77), 12 states have call successors, (18), 9 states have call predecessors, (18), 10 states have return successors, (16), 10 states have call predecessors, (16), 12 states have call successors, (16) [2022-07-13 22:31:47,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:31:47,423 INFO L93 Difference]: Finished difference Result 292 states and 377 transitions. [2022-07-13 22:31:47,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-13 22:31:47,424 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 26 states have internal predecessors, (77), 12 states have call successors, (18), 9 states have call predecessors, (18), 10 states have return successors, (16), 10 states have call predecessors, (16), 12 states have call successors, (16) Word has length 113 [2022-07-13 22:31:47,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:31:47,426 INFO L225 Difference]: With dead ends: 292 [2022-07-13 22:31:47,426 INFO L226 Difference]: Without dead ends: 202 [2022-07-13 22:31:47,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 110 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 43.2s TimeCoverageRelationStatistics Valid=166, Invalid=1374, Unknown=32, NotChecked=234, Total=1806 [2022-07-13 22:31:47,428 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 110 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 942 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:31:47,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 553 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 470 Invalid, 0 Unknown, 942 Unchecked, 0.3s Time] [2022-07-13 22:31:47,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-07-13 22:31:47,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 198. [2022-07-13 22:31:47,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 129 states have (on average 1.1085271317829457) internal successors, (143), 136 states have internal predecessors, (143), 41 states have call successors, (41), 23 states have call predecessors, (41), 27 states have return successors, (72), 38 states have call predecessors, (72), 40 states have call successors, (72) [2022-07-13 22:31:47,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 256 transitions. [2022-07-13 22:31:47,439 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 256 transitions. Word has length 113 [2022-07-13 22:31:47,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:31:47,439 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 256 transitions. [2022-07-13 22:31:47,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 26 states have internal predecessors, (77), 12 states have call successors, (18), 9 states have call predecessors, (18), 10 states have return successors, (16), 10 states have call predecessors, (16), 12 states have call successors, (16) [2022-07-13 22:31:47,439 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 256 transitions. [2022-07-13 22:31:47,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-13 22:31:47,441 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:31:47,441 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:31:47,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-13 22:31:47,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-13 22:31:47,650 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:31:47,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:31:47,650 INFO L85 PathProgramCache]: Analyzing trace with hash -162788614, now seen corresponding path program 1 times [2022-07-13 22:31:47,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:31:47,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407487164] [2022-07-13 22:31:47,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:31:47,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:31:47,684 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:31:47,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1285913150] [2022-07-13 22:31:47,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:31:47,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:31:47,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:31:47,686 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) [2022-07-13 22:31:47,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-13 22:31:48,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:31:48,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 2473 conjuncts, 95 conjunts are in the unsatisfiable core [2022-07-13 22:31:48,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:31:48,088 INFO L390 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 [2022-07-13 22:31:48,172 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-13 22:31:48,172 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 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 [2022-07-13 22:31:48,192 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2022-07-13 22:31:48,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:31:48,276 INFO L390 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 32 treesize of output 25 [2022-07-13 22:31:48,355 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1812 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1812))) is different from true [2022-07-13 22:31:48,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:31:48,418 INFO L390 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 27 treesize of output 27 [2022-07-13 22:31:48,423 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-13 22:31:48,423 INFO L390 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 [2022-07-13 22:31:58,646 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1813 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1813)))) is different from true [2022-07-13 22:32:16,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:32:16,673 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 54 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 3 not checked. [2022-07-13 22:32:16,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:32:17,920 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_114| Int) (v_ArrVal_1821 Int)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_114| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_114|) 0 v_ArrVal_1821)) c_aws_array_list_clear_~list.base) (+ 32 c_aws_array_list_clear_~list.offset)) 0))) is different from false [2022-07-13 22:32:17,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:32:17,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407487164] [2022-07-13 22:32:17,921 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:32:17,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285913150] [2022-07-13 22:32:17,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285913150] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:32:17,921 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:32:17,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2022-07-13 22:32:17,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160197732] [2022-07-13 22:32:17,921 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 22:32:17,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-13 22:32:17,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:32:17,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-13 22:32:17,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=610, Unknown=14, NotChecked=156, Total=870 [2022-07-13 22:32:17,922 INFO L87 Difference]: Start difference. First operand 198 states and 256 transitions. Second operand has 29 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 26 states have internal predecessors, (81), 12 states have call successors, (19), 9 states have call predecessors, (19), 10 states have return successors, (17), 10 states have call predecessors, (17), 12 states have call successors, (17)