./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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_pop_back_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4e3d62ab3962e5958dc41169c7885079de47f5dcf75079068205793f151a2e2b --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 15:28:06,856 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 15:28:06,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 15:28:06,880 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 15:28:06,880 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 15:28:06,881 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 15:28:06,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 15:28:06,883 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 15:28:06,885 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 15:28:06,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 15:28:06,886 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 15:28:06,887 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 15:28:06,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 15:28:06,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 15:28:06,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 15:28:06,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 15:28:06,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 15:28:06,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 15:28:06,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 15:28:06,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 15:28:06,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 15:28:06,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 15:28:06,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 15:28:06,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 15:28:06,902 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 15:28:06,902 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 15:28:06,902 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 15:28:06,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 15:28:06,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 15:28:06,904 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 15:28:06,905 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 15:28:06,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 15:28:06,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 15:28:06,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 15:28:06,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 15:28:06,908 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 15:28:06,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 15:28:06,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 15:28:06,909 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 15:28:06,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 15:28:06,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 15:28:06,911 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 15:28:06,932 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 15:28:06,933 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 15:28:06,934 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 15:28:06,934 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 15:28:06,935 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 15:28:06,935 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 15:28:06,935 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 15:28:06,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 15:28:06,936 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 15:28:06,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 15:28:06,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 15:28:06,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 15:28:06,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 15:28:06,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 15:28:06,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 15:28:06,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 15:28:06,938 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 15:28:06,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 15:28:06,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 15:28:06,938 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 15:28:06,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 15:28:06,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:28:06,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 15:28:06,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 15:28:06,939 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 15:28:06,940 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 15:28:06,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 15:28:06,940 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 15:28:06,940 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 15:28:06,940 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 15:28:06,941 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 15:28:06,941 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e3d62ab3962e5958dc41169c7885079de47f5dcf75079068205793f151a2e2b [2021-12-21 15:28:07,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 15:28:07,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 15:28:07,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 15:28:07,187 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 15:28:07,188 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 15:28:07,189 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i [2021-12-21 15:28:07,254 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/891c37fcb/e8bb7e1ab8bd424fb1ffd1a0dc4aa89c/FLAG735065dfe [2021-12-21 15:28:07,857 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 15:28:07,858 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i [2021-12-21 15:28:07,897 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/891c37fcb/e8bb7e1ab8bd424fb1ffd1a0dc4aa89c/FLAG735065dfe [2021-12-21 15:28:07,992 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/891c37fcb/e8bb7e1ab8bd424fb1ffd1a0dc4aa89c [2021-12-21 15:28:07,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 15:28:07,998 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 15:28:08,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 15:28:08,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 15:28:08,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 15:28:08,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:28:07" (1/1) ... [2021-12-21 15:28:08,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1183b359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:28:08, skipping insertion in model container [2021-12-21 15:28:08,015 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:28:07" (1/1) ... [2021-12-21 15:28:08,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 15:28:08,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 15:28:08,305 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_pop_back_harness.i[4497,4510] [2021-12-21 15:28:08,312 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_pop_back_harness.i[4557,4570] [2021-12-21 15:28:08,880 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-21 15:28:08,963 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:08,963 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:08,964 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:08,966 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:08,968 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:08,987 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:08,988 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:08,989 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:08,990 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:08,991 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:08,991 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:08,992 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:08,992 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:09,237 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-21 15:28:09,240 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-21 15:28:09,241 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-21 15:28:09,241 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-21 15:28:09,242 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-21 15:28:09,261 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-21 15:28:09,261 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-21 15:28:09,262 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-21 15:28:09,262 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-21 15:28:09,262 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-21 15:28:09,399 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:09,406 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:09,460 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:28:09,482 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 15:28:09,492 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_pop_back_harness.i[4497,4510] [2021-12-21 15:28:09,493 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_pop_back_harness.i[4557,4570] [2021-12-21 15:28:09,515 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-21 15:28:09,526 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:09,527 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:09,527 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:09,527 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:09,528 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:09,533 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:09,533 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:09,534 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:09,534 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:09,535 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:09,536 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:09,536 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:09,536 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:09,561 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-21 15:28:09,562 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-21 15:28:09,563 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-21 15:28:09,563 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-21 15:28:09,564 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-21 15:28:09,564 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-21 15:28:09,565 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-21 15:28:09,565 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-21 15:28:09,566 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-21 15:28:09,566 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-21 15:28:09,605 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:09,624 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:28:09,668 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:28:09,870 INFO L208 MainTranslator]: Completed translation [2021-12-21 15:28:09,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:28:09 WrapperNode [2021-12-21 15:28:09,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 15:28:09,871 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 15:28:09,871 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 15:28:09,871 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 15:28:09,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:28:09" (1/1) ... [2021-12-21 15:28:09,951 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:28:09" (1/1) ... [2021-12-21 15:28:10,012 INFO L137 Inliner]: procedures = 691, calls = 1700, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 616 [2021-12-21 15:28:10,012 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 15:28:10,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 15:28:10,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 15:28:10,013 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 15:28:10,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:28:09" (1/1) ... [2021-12-21 15:28:10,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:28:09" (1/1) ... [2021-12-21 15:28:10,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:28:09" (1/1) ... [2021-12-21 15:28:10,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:28:09" (1/1) ... [2021-12-21 15:28:10,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:28:09" (1/1) ... [2021-12-21 15:28:10,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:28:09" (1/1) ... [2021-12-21 15:28:10,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:28:09" (1/1) ... [2021-12-21 15:28:10,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 15:28:10,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 15:28:10,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 15:28:10,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 15:28:10,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:28:09" (1/1) ... [2021-12-21 15:28:10,134 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:28:10,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:28:10,156 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 15:28:10,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 15:28:10,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 15:28:10,197 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-21 15:28:10,197 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-21 15:28:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-21 15:28:10,198 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-21 15:28:10,199 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-21 15:28:10,199 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-21 15:28:10,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 15:28:10,200 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-21 15:28:10,200 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-21 15:28:10,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-21 15:28:10,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-21 15:28:10,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 15:28:10,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 15:28:10,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 15:28:10,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 15:28:10,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 15:28:10,201 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-21 15:28:10,202 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-21 15:28:10,202 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-12-21 15:28:10,202 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-12-21 15:28:10,202 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-21 15:28:10,202 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-21 15:28:10,203 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-12-21 15:28:10,203 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-12-21 15:28:10,203 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 15:28:10,204 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 15:28:10,204 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2021-12-21 15:28:10,204 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2021-12-21 15:28:10,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 15:28:10,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 15:28:10,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 15:28:10,205 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-21 15:28:10,205 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-21 15:28:10,205 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-21 15:28:10,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-21 15:28:10,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 15:28:10,205 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2021-12-21 15:28:10,206 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2021-12-21 15:28:10,206 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2021-12-21 15:28:10,206 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2021-12-21 15:28:10,206 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-12-21 15:28:10,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-12-21 15:28:10,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 15:28:10,480 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 15:28:10,482 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 15:28:11,265 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 15:28:11,282 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 15:28:11,282 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 15:28:11,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:28:11 BoogieIcfgContainer [2021-12-21 15:28:11,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 15:28:11,287 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 15:28:11,287 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 15:28:11,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 15:28:11,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:28:07" (1/3) ... [2021-12-21 15:28:11,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@289cf81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:28:11, skipping insertion in model container [2021-12-21 15:28:11,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:28:09" (2/3) ... [2021-12-21 15:28:11,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@289cf81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:28:11, skipping insertion in model container [2021-12-21 15:28:11,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:28:11" (3/3) ... [2021-12-21 15:28:11,294 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_pop_back_harness.i [2021-12-21 15:28:11,299 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 15:28:11,300 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 15:28:11,355 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 15:28:11,361 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 15:28:11,361 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 15:28:11,381 INFO L276 IsEmpty]: Start isEmpty. Operand has 169 states, 103 states have (on average 1.203883495145631) internal successors, (124), 104 states have internal predecessors, (124), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-12-21 15:28:11,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-21 15:28:11,390 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:28:11,391 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:28:11,392 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:28:11,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:28:11,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1276829709, now seen corresponding path program 1 times [2021-12-21 15:28:11,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:28:11,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107084616] [2021-12-21 15:28:11,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:28:11,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:28:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:11,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:28:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:11,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:28:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:11,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:28:11,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:12,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:28:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:12,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 15:28:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:12,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 15:28:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:12,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 15:28:12,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:12,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-21 15:28:12,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:12,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 15:28:12,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:12,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 15:28:12,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:12,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 15:28:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:12,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 15:28:12,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:12,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 15:28:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:12,136 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-21 15:28:12,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:28:12,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107084616] [2021-12-21 15:28:12,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107084616] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:28:12,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:28:12,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 15:28:12,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261000369] [2021-12-21 15:28:12,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:28:12,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 15:28:12,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:28:12,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 15:28:12,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-21 15:28:12,177 INFO L87 Difference]: Start difference. First operand has 169 states, 103 states have (on average 1.203883495145631) internal successors, (124), 104 states have internal predecessors, (124), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 15:28:12,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:28:12,722 INFO L93 Difference]: Finished difference Result 364 states and 532 transitions. [2021-12-21 15:28:12,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 15:28:12,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 84 [2021-12-21 15:28:12,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:28:12,741 INFO L225 Difference]: With dead ends: 364 [2021-12-21 15:28:12,742 INFO L226 Difference]: Without dead ends: 197 [2021-12-21 15:28:12,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-21 15:28:12,750 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 111 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 15:28:12,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 243 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 15:28:12,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-12-21 15:28:12,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 164. [2021-12-21 15:28:12,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 99 states have (on average 1.1818181818181819) internal successors, (117), 100 states have internal predecessors, (117), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-12-21 15:28:12,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 212 transitions. [2021-12-21 15:28:12,800 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 212 transitions. Word has length 84 [2021-12-21 15:28:12,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:28:12,800 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 212 transitions. [2021-12-21 15:28:12,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 15:28:12,801 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 212 transitions. [2021-12-21 15:28:12,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-21 15:28:12,804 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:28:12,804 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:28:12,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 15:28:12,805 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:28:12,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:28:12,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1354789231, now seen corresponding path program 1 times [2021-12-21 15:28:12,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:28:12,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602181140] [2021-12-21 15:28:12,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:28:12,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:28:12,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:12,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:28:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:12,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:28:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:12,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:28:12,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:12,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:28:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:12,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 15:28:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:13,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 15:28:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:13,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 15:28:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:13,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-21 15:28:13,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:13,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 15:28:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:13,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 15:28:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:13,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 15:28:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:13,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 15:28:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:13,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 15:28:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:13,136 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-12-21 15:28:13,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:28:13,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602181140] [2021-12-21 15:28:13,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602181140] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:28:13,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881041550] [2021-12-21 15:28:13,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:28:13,137 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:28:13,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:28:13,143 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:28:13,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 15:28:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:13,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 2131 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 15:28:13,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:28:13,732 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-21 15:28:13,732 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:28:13,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881041550] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:28:13,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:28:13,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-12-21 15:28:13,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11053243] [2021-12-21 15:28:13,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:28:13,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:28:13,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:28:13,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:28:13,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-21 15:28:13,737 INFO L87 Difference]: Start difference. First operand 164 states and 212 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-21 15:28:13,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:28:13,970 INFO L93 Difference]: Finished difference Result 293 states and 387 transitions. [2021-12-21 15:28:13,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:28:13,971 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 84 [2021-12-21 15:28:13,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:28:13,975 INFO L225 Difference]: With dead ends: 293 [2021-12-21 15:28:13,976 INFO L226 Difference]: Without dead ends: 166 [2021-12-21 15:28:13,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-12-21 15:28:13,978 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 223 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 15:28:13,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 639 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 15:28:13,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-12-21 15:28:13,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-12-21 15:28:13,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 100 states have (on average 1.18) internal successors, (118), 102 states have internal predecessors, (118), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (52), 47 states have call predecessors, (52), 47 states have call successors, (52) [2021-12-21 15:28:13,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 218 transitions. [2021-12-21 15:28:13,996 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 218 transitions. Word has length 84 [2021-12-21 15:28:13,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:28:13,997 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 218 transitions. [2021-12-21 15:28:13,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-21 15:28:13,997 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 218 transitions. [2021-12-21 15:28:13,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-21 15:28:13,999 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:28:13,999 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:28:14,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 15:28:14,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:28:14,224 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:28:14,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:28:14,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1275658481, now seen corresponding path program 1 times [2021-12-21 15:28:14,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:28:14,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093968769] [2021-12-21 15:28:14,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:28:14,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:28:14,302 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:28:14,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [537125627] [2021-12-21 15:28:14,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:28:14,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:28:14,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:28:14,304 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:28:14,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 15:28:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:14,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 2272 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 15:28:14,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:28:14,934 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-21 15:28:14,934 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:28:14,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:28:14,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093968769] [2021-12-21 15:28:14,935 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:28:14,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537125627] [2021-12-21 15:28:14,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537125627] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:28:14,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:28:14,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:28:14,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589660132] [2021-12-21 15:28:14,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:28:14,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:28:14,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:28:14,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:28:14,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:28:14,938 INFO L87 Difference]: Start difference. First operand 166 states and 218 transitions. Second operand has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-21 15:28:15,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:28:15,227 INFO L93 Difference]: Finished difference Result 285 states and 376 transitions. [2021-12-21 15:28:15,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 15:28:15,228 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 99 [2021-12-21 15:28:15,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:28:15,230 INFO L225 Difference]: With dead ends: 285 [2021-12-21 15:28:15,230 INFO L226 Difference]: Without dead ends: 166 [2021-12-21 15:28:15,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-12-21 15:28:15,231 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 229 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 15:28:15,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 888 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 15:28:15,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-12-21 15:28:15,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-12-21 15:28:15,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 100 states have (on average 1.18) internal successors, (118), 102 states have internal predecessors, (118), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2021-12-21 15:28:15,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 215 transitions. [2021-12-21 15:28:15,246 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 215 transitions. Word has length 99 [2021-12-21 15:28:15,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:28:15,246 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 215 transitions. [2021-12-21 15:28:15,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-21 15:28:15,247 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 215 transitions. [2021-12-21 15:28:15,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-21 15:28:15,248 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:28:15,249 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:28:15,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 15:28:15,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-21 15:28:15,459 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:28:15,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:28:15,460 INFO L85 PathProgramCache]: Analyzing trace with hash -170213077, now seen corresponding path program 2 times [2021-12-21 15:28:15,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:28:15,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094432300] [2021-12-21 15:28:15,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:28:15,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:28:15,530 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:28:15,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [613927196] [2021-12-21 15:28:15,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 15:28:15,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:28:15,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:28:15,532 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:28:15,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 15:28:16,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 15:28:16,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:28:16,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 2413 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 15:28:16,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:28:16,282 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-21 15:28:16,282 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:28:16,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:28:16,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094432300] [2021-12-21 15:28:16,283 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:28:16,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613927196] [2021-12-21 15:28:16,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613927196] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:28:16,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:28:16,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 15:28:16,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196747642] [2021-12-21 15:28:16,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:28:16,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 15:28:16,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:28:16,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 15:28:16,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-21 15:28:16,286 INFO L87 Difference]: Start difference. First operand 166 states and 215 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-21 15:28:16,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:28:16,664 INFO L93 Difference]: Finished difference Result 282 states and 368 transitions. [2021-12-21 15:28:16,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 15:28:16,665 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 114 [2021-12-21 15:28:16,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:28:16,667 INFO L225 Difference]: With dead ends: 282 [2021-12-21 15:28:16,667 INFO L226 Difference]: Without dead ends: 164 [2021-12-21 15:28:16,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-12-21 15:28:16,669 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 231 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 15:28:16,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 1144 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 15:28:16,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-12-21 15:28:16,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2021-12-21 15:28:16,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 99 states have (on average 1.1717171717171717) internal successors, (116), 100 states have internal predecessors, (116), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-12-21 15:28:16,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 211 transitions. [2021-12-21 15:28:16,682 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 211 transitions. Word has length 114 [2021-12-21 15:28:16,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:28:16,683 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 211 transitions. [2021-12-21 15:28:16,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-21 15:28:16,683 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 211 transitions. [2021-12-21 15:28:16,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-21 15:28:16,685 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:28:16,685 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:28:16,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-21 15:28:16,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:28:16,900 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:28:16,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:28:16,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1405660739, now seen corresponding path program 1 times [2021-12-21 15:28:16,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:28:16,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297186048] [2021-12-21 15:28:16,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:28:16,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:28:16,979 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:28:16,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [424198964] [2021-12-21 15:28:16,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:28:16,979 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:28:16,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:28:16,981 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:28:16,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 15:28:17,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:17,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 277 conjunts are in the unsatisfiable core [2021-12-21 15:28:17,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:28:17,604 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-21 15:28:17,974 INFO L387 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 6 treesize of output 5 [2021-12-21 15:28:18,161 INFO L353 Elim1Store]: treesize reduction 53, result has 32.9 percent of original size [2021-12-21 15:28:18,161 INFO L387 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 [2021-12-21 15:28:18,255 INFO L353 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-12-21 15:28:18,255 INFO L387 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 29 treesize of output 37 [2021-12-21 15:28:18,873 INFO L353 Elim1Store]: treesize reduction 91, result has 30.0 percent of original size [2021-12-21 15:28:18,874 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 46 treesize of output 69 [2021-12-21 15:28:18,882 INFO L387 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 6 treesize of output 5 [2021-12-21 15:28:20,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:28:20,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:28:20,783 INFO L387 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 [2021-12-21 15:28:20,817 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-21 15:28:20,817 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-12-21 15:28:34,597 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 69 [2021-12-21 15:28:35,111 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 50 proven. 102 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-21 15:28:35,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:28:46,155 WARN L227 SmtUtils]: Spent 10.33s on a formula simplification that was a NOOP. DAG size: 125 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-12-21 15:28:55,003 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_aws_mul_size_checked_#in~r#1.base_7| Int)) (let ((.cse0 (let ((.cse1 (select |c_#memory_int| c_aws_array_list_length_~list.base))) (* (select .cse1 (+ c_aws_array_list_length_~list.offset 16)) (select .cse1 (+ c_aws_array_list_length_~list.offset 24)))))) (<= (mod .cse0 18446744073709551616) (mod (select (select (store |c_#memory_int| |v_aws_mul_size_checked_#in~r#1.base_7| (store (select |c_#memory_int| |v_aws_mul_size_checked_#in~r#1.base_7|) 0 .cse0)) c_aws_array_list_length_~list.base) (+ c_aws_array_list_length_~list.offset 8)) 18446744073709551616)))) (forall ((|v_aws_mul_size_checked_#in~r#1.base_7| Int)) (let ((.cse3 (+ c_aws_array_list_length_~list.offset 24))) (let ((.cse4 (let ((.cse5 (select |c_#memory_int| c_aws_array_list_length_~list.base))) (* (select .cse5 (+ c_aws_array_list_length_~list.offset 16)) (select .cse5 .cse3))))) (let ((.cse2 (select (store |c_#memory_int| |v_aws_mul_size_checked_#in~r#1.base_7| (store (select |c_#memory_int| |v_aws_mul_size_checked_#in~r#1.base_7|) 0 .cse4)) c_aws_array_list_length_~list.base))) (or (not (= (mod (select .cse2 .cse3) 18446744073709551616) 0)) (not (<= (mod .cse4 18446744073709551616) (mod (select .cse2 (+ c_aws_array_list_length_~list.offset 8)) 18446744073709551616))))))))) is different from false [2021-12-21 15:28:55,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:28:55,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297186048] [2021-12-21 15:28:55,026 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:28:55,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424198964] [2021-12-21 15:28:55,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424198964] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:28:55,026 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:28:55,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2021-12-21 15:28:55,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997253371] [2021-12-21 15:28:55,026 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-21 15:28:55,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-12-21 15:28:55,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:28:55,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-12-21 15:28:55,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=2568, Unknown=23, NotChecked=102, Total=2862 [2021-12-21 15:28:55,029 INFO L87 Difference]: Start difference. First operand 164 states and 211 transitions. Second operand has 50 states, 42 states have (on average 2.0476190476190474) internal successors, (86), 39 states have internal predecessors, (86), 15 states have call successors, (22), 10 states have call predecessors, (22), 14 states have return successors, (19), 13 states have call predecessors, (19), 13 states have call successors, (19) [2021-12-21 15:29:08,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:29:08,232 INFO L93 Difference]: Finished difference Result 258 states and 332 transitions. [2021-12-21 15:29:08,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-12-21 15:29:08,233 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 42 states have (on average 2.0476190476190474) internal successors, (86), 39 states have internal predecessors, (86), 15 states have call successors, (22), 10 states have call predecessors, (22), 14 states have return successors, (19), 13 states have call predecessors, (19), 13 states have call successors, (19) Word has length 144 [2021-12-21 15:29:08,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:29:08,236 INFO L225 Difference]: With dead ends: 258 [2021-12-21 15:29:08,236 INFO L226 Difference]: Without dead ends: 256 [2021-12-21 15:29:08,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 87 SyntacticMatches, 11 SemanticMatches, 76 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1783 ImplicationChecksByTransitivity, 23.7s TimeCoverageRelationStatistics Valid=364, Invalid=5453, Unknown=39, NotChecked=150, Total=6006 [2021-12-21 15:29:08,239 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 132 mSDsluCounter, 2097 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 2294 SdHoareTripleChecker+Invalid, 3446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2243 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 15:29:08,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 2294 Invalid, 3446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1094 Invalid, 0 Unknown, 2243 Unchecked, 1.2s Time] [2021-12-21 15:29:08,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-12-21 15:29:08,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 243. [2021-12-21 15:29:08,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 151 states have (on average 1.1655629139072847) internal successors, (176), 154 states have internal predecessors, (176), 64 states have call successors, (64), 27 states have call predecessors, (64), 27 states have return successors, (75), 61 states have call predecessors, (75), 63 states have call successors, (75) [2021-12-21 15:29:08,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 315 transitions. [2021-12-21 15:29:08,262 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 315 transitions. Word has length 144 [2021-12-21 15:29:08,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:29:08,263 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 315 transitions. [2021-12-21 15:29:08,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 42 states have (on average 2.0476190476190474) internal successors, (86), 39 states have internal predecessors, (86), 15 states have call successors, (22), 10 states have call predecessors, (22), 14 states have return successors, (19), 13 states have call predecessors, (19), 13 states have call successors, (19) [2021-12-21 15:29:08,264 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 315 transitions. [2021-12-21 15:29:08,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-21 15:29:08,266 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:29:08,266 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:29:08,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-21 15:29:08,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:29:08,491 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:29:08,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:29:08,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1456570214, now seen corresponding path program 1 times [2021-12-21 15:29:08,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:29:08,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441947779] [2021-12-21 15:29:08,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:08,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:29:08,548 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:29:08,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1843399447] [2021-12-21 15:29:08,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:08,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:29:08,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:29:08,550 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:29:08,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-21 15:29:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:09,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 2699 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-21 15:29:09,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:29:09,346 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-12-21 15:29:09,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:29:09,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:29:09,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441947779] [2021-12-21 15:29:09,347 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:29:09,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843399447] [2021-12-21 15:29:09,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843399447] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:29:09,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:29:09,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-21 15:29:09,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162197613] [2021-12-21 15:29:09,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:29:09,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-21 15:29:09,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:29:09,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-21 15:29:09,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-12-21 15:29:09,348 INFO L87 Difference]: Start difference. First operand 243 states and 315 transitions. Second operand has 13 states, 11 states have (on average 6.545454545454546) internal successors, (72), 10 states have internal predecessors, (72), 4 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-21 15:29:09,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:29:09,598 INFO L93 Difference]: Finished difference Result 394 states and 525 transitions. [2021-12-21 15:29:09,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 15:29:09,600 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.545454545454546) internal successors, (72), 10 states have internal predecessors, (72), 4 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 150 [2021-12-21 15:29:09,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:29:09,602 INFO L225 Difference]: With dead ends: 394 [2021-12-21 15:29:09,603 INFO L226 Difference]: Without dead ends: 258 [2021-12-21 15:29:09,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-12-21 15:29:09,604 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 12 mSDsluCounter, 2311 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2526 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 15:29:09,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 2526 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 15:29:09,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-12-21 15:29:09,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 255. [2021-12-21 15:29:09,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 161 states have (on average 1.173913043478261) internal successors, (189), 165 states have internal predecessors, (189), 64 states have call successors, (64), 27 states have call predecessors, (64), 29 states have return successors, (85), 62 states have call predecessors, (85), 63 states have call successors, (85) [2021-12-21 15:29:09,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 338 transitions. [2021-12-21 15:29:09,625 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 338 transitions. Word has length 150 [2021-12-21 15:29:09,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:29:09,626 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 338 transitions. [2021-12-21 15:29:09,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.545454545454546) internal successors, (72), 10 states have internal predecessors, (72), 4 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-21 15:29:09,627 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 338 transitions. [2021-12-21 15:29:09,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-21 15:29:09,629 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:29:09,629 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:29:09,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-21 15:29:09,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:29:09,853 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:29:09,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:29:09,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1800027525, now seen corresponding path program 1 times [2021-12-21 15:29:09,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:29:09,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956650549] [2021-12-21 15:29:09,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:09,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:29:09,923 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:29:09,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [443032686] [2021-12-21 15:29:09,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:09,923 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:29:09,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:29:09,925 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:29:09,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-21 15:29:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:10,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 2690 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 15:29:10,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:29:10,594 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-21 15:29:10,594 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:29:10,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:29:10,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956650549] [2021-12-21 15:29:10,594 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:29:10,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443032686] [2021-12-21 15:29:10,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443032686] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:29:10,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:29:10,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 15:29:10,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318035717] [2021-12-21 15:29:10,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:29:10,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 15:29:10,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:29:10,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 15:29:10,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 15:29:10,596 INFO L87 Difference]: Start difference. First operand 255 states and 338 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-21 15:29:10,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:29:10,627 INFO L93 Difference]: Finished difference Result 425 states and 591 transitions. [2021-12-21 15:29:10,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 15:29:10,636 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 144 [2021-12-21 15:29:10,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:29:10,638 INFO L225 Difference]: With dead ends: 425 [2021-12-21 15:29:10,640 INFO L226 Difference]: Without dead ends: 265 [2021-12-21 15:29:10,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:29:10,642 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 7 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:29:10,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 625 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:29:10,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-12-21 15:29:10,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 259. [2021-12-21 15:29:10,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 165 states have (on average 1.1696969696969697) internal successors, (193), 169 states have internal predecessors, (193), 64 states have call successors, (64), 27 states have call predecessors, (64), 29 states have return successors, (85), 62 states have call predecessors, (85), 63 states have call successors, (85) [2021-12-21 15:29:10,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 342 transitions. [2021-12-21 15:29:10,662 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 342 transitions. Word has length 144 [2021-12-21 15:29:10,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:29:10,662 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 342 transitions. [2021-12-21 15:29:10,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-21 15:29:10,663 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 342 transitions. [2021-12-21 15:29:10,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-21 15:29:10,664 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:29:10,664 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:29:10,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-21 15:29:10,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:29:10,865 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:29:10,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:29:10,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1304087383, now seen corresponding path program 1 times [2021-12-21 15:29:10,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:29:10,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173192658] [2021-12-21 15:29:10,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:10,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:29:10,919 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:29:10,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1537075010] [2021-12-21 15:29:10,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:10,920 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:29:10,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:29:10,921 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:29:10,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-21 15:29:11,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:11,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 2700 conjuncts, 123 conjunts are in the unsatisfiable core [2021-12-21 15:29:11,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:29:11,654 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_738 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_738))) is different from true [2021-12-21 15:29:11,936 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-21 15:29:11,937 INFO L387 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 [2021-12-21 15:29:11,945 INFO L387 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 [2021-12-21 15:29:12,433 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_740 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_740))) (exists ((v_ArrVal_739 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_739) |c_#memory_$Pointer$.offset|)))) is different from true [2021-12-21 15:29:12,953 INFO L353 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2021-12-21 15:29:12,954 INFO L387 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 14 treesize of output 14 [2021-12-21 15:29:12,958 INFO L387 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 14 treesize of output 11