./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_ensure_capacity_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_array_list_ensure_capacity_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 c12ad62b7b197015493bfb3c1dd9a5de2922d9b16e39f249961c276d8b82591b --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:28:12,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:28:12,367 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:28:12,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:28:12,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:28:12,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:28:12,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:28:12,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:28:12,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:28:12,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:28:12,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:28:12,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:28:12,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:28:12,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:28:12,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:28:12,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:28:12,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:28:12,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:28:12,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:28:12,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:28:12,438 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:28:12,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:28:12,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:28:12,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:28:12,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:28:12,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:28:12,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:28:12,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:28:12,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:28:12,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:28:12,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:28:12,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:28:12,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:28:12,447 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:28:12,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:28:12,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:28:12,448 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:28:12,449 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:28:12,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:28:12,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:28:12,450 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:28:12,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:28:12,453 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-13 22:28:12,482 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:28:12,482 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:28:12,482 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:28:12,482 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:28:12,483 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:28:12,483 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:28:12,484 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:28:12,484 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:28:12,484 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:28:12,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:28:12,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:28:12,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:28:12,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:28:12,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:28:12,485 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:28:12,485 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:28:12,485 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:28:12,486 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:28:12,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:28:12,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:28:12,487 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:28:12,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:28:12,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:28:12,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:28:12,488 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:28:12,488 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:28:12,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:28:12,488 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:28:12,488 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:28:12,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:28:12,489 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c12ad62b7b197015493bfb3c1dd9a5de2922d9b16e39f249961c276d8b82591b [2022-07-13 22:28:12,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:28:12,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:28:12,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:28:12,713 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:28:12,713 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:28:12,714 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_ensure_capacity_harness.i [2022-07-13 22:28:12,760 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01d710641/7be137ae40cb4b099a4a9c7fe1013a61/FLAGe2f171e5c [2022-07-13 22:28:13,312 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:28:13,312 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_ensure_capacity_harness.i [2022-07-13 22:28:13,340 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01d710641/7be137ae40cb4b099a4a9c7fe1013a61/FLAGe2f171e5c [2022-07-13 22:28:13,792 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01d710641/7be137ae40cb4b099a4a9c7fe1013a61 [2022-07-13 22:28:13,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:28:13,798 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:28:13,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:28:13,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:28:13,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:28:13,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:28:13" (1/1) ... [2022-07-13 22:28:13,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37643736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:13, skipping insertion in model container [2022-07-13 22:28:13,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:28:13" (1/1) ... [2022-07-13 22:28:13,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:28:13,890 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:28:14,091 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_ensure_capacity_harness.i[4504,4517] [2022-07-13 22:28:14,096 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_ensure_capacity_harness.i[4564,4577] [2022-07-13 22:28:14,517 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:28:14,569 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:14,570 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:14,571 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:14,574 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:14,576 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:14,582 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:14,586 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:14,587 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:14,587 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:14,589 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:14,589 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:14,590 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:14,590 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:14,737 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:28:14,738 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:28:14,738 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:28:14,739 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:28:14,740 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:28:14,740 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:28:14,741 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:28:14,742 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:28:14,742 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:28:14,742 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:28:14,806 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:14,806 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:14,808 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:14,812 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:14,841 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:14,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:28:14,858 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:28:14,872 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_ensure_capacity_harness.i[4504,4517] [2022-07-13 22:28:14,872 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_ensure_capacity_harness.i[4564,4577] [2022-07-13 22:28:14,891 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:28:14,899 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:14,899 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:14,899 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:14,900 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:14,900 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:14,904 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:14,904 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:14,905 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:14,905 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:14,906 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:14,906 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:14,907 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:14,907 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:14,925 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:28:14,925 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:28:14,926 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:28:14,926 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:28:14,927 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:28:14,927 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:28:14,927 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:28:14,928 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:28:14,928 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:28:14,928 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:28:14,944 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:14,945 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:14,946 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:14,948 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:14,999 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:15,000 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:28:15,132 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:28:15,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:15 WrapperNode [2022-07-13 22:28:15,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:28:15,134 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:28:15,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:28:15,134 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:28:15,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:15" (1/1) ... [2022-07-13 22:28:15,192 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:15" (1/1) ... [2022-07-13 22:28:15,255 INFO L137 Inliner]: procedures = 691, calls = 1684, calls flagged for inlining = 52, calls inlined = 11, statements flattened = 804 [2022-07-13 22:28:15,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:28:15,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:28:15,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:28:15,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:28:15,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:15" (1/1) ... [2022-07-13 22:28:15,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:15" (1/1) ... [2022-07-13 22:28:15,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:15" (1/1) ... [2022-07-13 22:28:15,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:15" (1/1) ... [2022-07-13 22:28:15,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:15" (1/1) ... [2022-07-13 22:28:15,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:15" (1/1) ... [2022-07-13 22:28:15,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:15" (1/1) ... [2022-07-13 22:28:15,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:28:15,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:28:15,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:28:15,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:28:15,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:15" (1/1) ... [2022-07-13 22:28:15,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:28:15,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:28:15,395 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 22:28:15,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 22:28:15,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:28:15,469 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-07-13 22:28:15,470 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-07-13 22:28:15,470 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-13 22:28:15,470 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-13 22:28:15,470 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-13 22:28:15,470 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-13 22:28:15,470 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-07-13 22:28:15,470 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-07-13 22:28:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:28:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-13 22:28:15,471 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-13 22:28:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-13 22:28:15,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-13 22:28:15,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 22:28:15,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:28:15,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 22:28:15,473 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-07-13 22:28:15,473 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-07-13 22:28:15,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:28:15,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:28:15,474 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-13 22:28:15,474 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-13 22:28:15,474 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-13 22:28:15,474 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-13 22:28:15,474 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-13 22:28:15,474 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-13 22:28:15,475 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-07-13 22:28:15,475 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-07-13 22:28:15,475 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-07-13 22:28:15,475 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-07-13 22:28:15,475 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 22:28:15,475 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 22:28:15,475 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-07-13 22:28:15,476 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-07-13 22:28:15,476 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-07-13 22:28:15,476 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-07-13 22:28:15,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:28:15,476 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-07-13 22:28:15,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-07-13 22:28:15,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 22:28:15,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-13 22:28:15,477 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-13 22:28:15,477 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-13 22:28:15,477 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-13 22:28:15,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-13 22:28:15,477 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-07-13 22:28:15,477 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-07-13 22:28:15,477 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_ensure_capacity [2022-07-13 22:28:15,477 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_ensure_capacity [2022-07-13 22:28:15,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:28:15,478 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-07-13 22:28:15,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-07-13 22:28:15,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:28:15,761 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:28:15,762 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:28:16,398 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:28:16,408 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:28:16,409 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 22:28:16,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:28:16 BoogieIcfgContainer [2022-07-13 22:28:16,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:28:16,415 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:28:16,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:28:16,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:28:16,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:28:13" (1/3) ... [2022-07-13 22:28:16,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@783fb2aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:28:16, skipping insertion in model container [2022-07-13 22:28:16,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:15" (2/3) ... [2022-07-13 22:28:16,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@783fb2aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:28:16, skipping insertion in model container [2022-07-13 22:28:16,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:28:16" (3/3) ... [2022-07-13 22:28:16,423 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_ensure_capacity_harness.i [2022-07-13 22:28:16,434 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:28:16,434 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:28:16,496 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:28:16,505 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@323c6e25, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@406272cd [2022-07-13 22:28:16,505 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 22:28:16,509 INFO L276 IsEmpty]: Start isEmpty. Operand has 241 states, 145 states have (on average 1.206896551724138) internal successors, (175), 146 states have internal predecessors, (175), 73 states have call successors, (73), 21 states have call predecessors, (73), 21 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2022-07-13 22:28:16,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-13 22:28:16,521 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:28:16,522 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1] [2022-07-13 22:28:16,522 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:28:16,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:28:16,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1087274047, now seen corresponding path program 1 times [2022-07-13 22:28:16,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:28:16,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268222958] [2022-07-13 22:28:16,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:16,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:28:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:16,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:28:16,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:16,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:28:16,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:17,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:28:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:17,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:28:17,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:17,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:28:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:17,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 22:28:17,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:17,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 22:28:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:17,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:28:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:17,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 22:28:17,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:17,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:28:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:17,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 22:28:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:17,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 22:28:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:17,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:28:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:17,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 22:28:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:17,135 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-13 22:28:17,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:28:17,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268222958] [2022-07-13 22:28:17,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268222958] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:28:17,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:28:17,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:28:17,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634918417] [2022-07-13 22:28:17,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:28:17,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:28:17,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:28:17,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:28:17,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:28:17,167 INFO L87 Difference]: Start difference. First operand has 241 states, 145 states have (on average 1.206896551724138) internal successors, (175), 146 states have internal predecessors, (175), 73 states have call successors, (73), 21 states have call predecessors, (73), 21 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-13 22:28:17,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:28:17,701 INFO L93 Difference]: Finished difference Result 502 states and 720 transitions. [2022-07-13 22:28:17,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:28:17,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 87 [2022-07-13 22:28:17,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:28:17,712 INFO L225 Difference]: With dead ends: 502 [2022-07-13 22:28:17,712 INFO L226 Difference]: Without dead ends: 257 [2022-07-13 22:28:17,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:28:17,718 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 78 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 22:28:17,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 442 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 22:28:17,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-07-13 22:28:17,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 230. [2022-07-13 22:28:17,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 136 states have (on average 1.1838235294117647) internal successors, (161), 138 states have internal predecessors, (161), 73 states have call successors, (73), 21 states have call predecessors, (73), 20 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2022-07-13 22:28:17,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 304 transitions. [2022-07-13 22:28:17,762 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 304 transitions. Word has length 87 [2022-07-13 22:28:17,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:28:17,762 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 304 transitions. [2022-07-13 22:28:17,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-13 22:28:17,763 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 304 transitions. [2022-07-13 22:28:17,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-13 22:28:17,765 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:28:17,765 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1] [2022-07-13 22:28:17,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:28:17,766 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:28:17,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:28:17,766 INFO L85 PathProgramCache]: Analyzing trace with hash 672902535, now seen corresponding path program 1 times [2022-07-13 22:28:17,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:28:17,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535443600] [2022-07-13 22:28:17,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:17,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:28:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:17,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:28:17,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:17,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:28:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:17,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:28:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:17,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:28:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:17,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:28:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:17,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 22:28:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:17,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 22:28:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:17,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:28:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:17,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 22:28:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:18,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:28:18,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:18,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 22:28:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:18,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 22:28:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:18,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:28:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:18,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 22:28:18,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:18,044 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-13 22:28:18,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:28:18,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535443600] [2022-07-13 22:28:18,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535443600] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:28:18,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040467165] [2022-07-13 22:28:18,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:18,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:18,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:28:18,060 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:28:18,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 22:28:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:18,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 2243 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 22:28:18,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:28:18,495 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-13 22:28:18,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:28:18,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040467165] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:28:18,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:28:18,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-13 22:28:18,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820026855] [2022-07-13 22:28:18,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:28:18,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:28:18,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:28:18,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:28:18,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-13 22:28:18,499 INFO L87 Difference]: Start difference. First operand 230 states and 304 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-13 22:28:18,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:28:18,692 INFO L93 Difference]: Finished difference Result 436 states and 585 transitions. [2022-07-13 22:28:18,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:28:18,693 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 87 [2022-07-13 22:28:18,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:28:18,695 INFO L225 Difference]: With dead ends: 436 [2022-07-13 22:28:18,695 INFO L226 Difference]: Without dead ends: 232 [2022-07-13 22:28:18,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:28:18,697 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 306 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:28:18,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 970 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:28:18,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-07-13 22:28:18,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2022-07-13 22:28:18,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 137 states have (on average 1.1824817518248176) internal successors, (162), 140 states have internal predecessors, (162), 73 states have call successors, (73), 21 states have call predecessors, (73), 21 states have return successors, (80), 70 states have call predecessors, (80), 70 states have call successors, (80) [2022-07-13 22:28:18,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 315 transitions. [2022-07-13 22:28:18,713 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 315 transitions. Word has length 87 [2022-07-13 22:28:18,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:28:18,713 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 315 transitions. [2022-07-13 22:28:18,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-13 22:28:18,713 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 315 transitions. [2022-07-13 22:28:18,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-13 22:28:18,715 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:28:18,715 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1] [2022-07-13 22:28:18,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 22:28:18,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:18,936 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:28:18,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:28:18,936 INFO L85 PathProgramCache]: Analyzing trace with hash -149436210, now seen corresponding path program 1 times [2022-07-13 22:28:18,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:28:18,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833360026] [2022-07-13 22:28:18,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:18,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:28:18,993 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:28:18,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1801949890] [2022-07-13 22:28:18,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:18,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:18,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:28:19,016 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:28:19,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 22:28:19,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:19,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 2379 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 22:28:19,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:28:19,457 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-13 22:28:19,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:28:19,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:28:19,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833360026] [2022-07-13 22:28:19,458 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:28:19,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801949890] [2022-07-13 22:28:19,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801949890] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:28:19,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:28:19,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:28:19,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751767105] [2022-07-13 22:28:19,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:28:19,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:28:19,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:28:19,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:28:19,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:28:19,460 INFO L87 Difference]: Start difference. First operand 232 states and 315 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 22:28:19,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:28:19,487 INFO L93 Difference]: Finished difference Result 443 states and 614 transitions. [2022-07-13 22:28:19,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:28:19,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 102 [2022-07-13 22:28:19,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:28:19,490 INFO L225 Difference]: With dead ends: 443 [2022-07-13 22:28:19,490 INFO L226 Difference]: Without dead ends: 237 [2022-07-13 22:28:19,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:28:19,492 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 10 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:28:19,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 899 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:28:19,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-07-13 22:28:19,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 234. [2022-07-13 22:28:19,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 139 states have (on average 1.1798561151079137) internal successors, (164), 142 states have internal predecessors, (164), 73 states have call successors, (73), 21 states have call predecessors, (73), 21 states have return successors, (80), 70 states have call predecessors, (80), 70 states have call successors, (80) [2022-07-13 22:28:19,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 317 transitions. [2022-07-13 22:28:19,520 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 317 transitions. Word has length 102 [2022-07-13 22:28:19,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:28:19,520 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 317 transitions. [2022-07-13 22:28:19,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 22:28:19,521 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 317 transitions. [2022-07-13 22:28:19,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-13 22:28:19,529 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:28:19,529 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1] [2022-07-13 22:28:19,549 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-13 22:28:19,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-13 22:28:19,744 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:28:19,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:28:19,744 INFO L85 PathProgramCache]: Analyzing trace with hash -710135988, now seen corresponding path program 1 times [2022-07-13 22:28:19,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:28:19,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593498077] [2022-07-13 22:28:19,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:19,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:28:19,788 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:28:19,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [146256118] [2022-07-13 22:28:19,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:19,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:19,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:28:19,803 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:28:19,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 22:28:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:20,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 2384 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 22:28:20,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:28:20,301 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-13 22:28:20,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:28:20,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:28:20,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593498077] [2022-07-13 22:28:20,301 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:28:20,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146256118] [2022-07-13 22:28:20,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146256118] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:28:20,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:28:20,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 22:28:20,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80595408] [2022-07-13 22:28:20,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:28:20,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:28:20,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:28:20,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:28:20,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:28:20,303 INFO L87 Difference]: Start difference. First operand 234 states and 317 transitions. Second operand has 8 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-13 22:28:20,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:28:20,648 INFO L93 Difference]: Finished difference Result 432 states and 583 transitions. [2022-07-13 22:28:20,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 22:28:20,648 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 102 [2022-07-13 22:28:20,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:28:20,650 INFO L225 Difference]: With dead ends: 432 [2022-07-13 22:28:20,650 INFO L226 Difference]: Without dead ends: 234 [2022-07-13 22:28:20,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-07-13 22:28:20,651 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 354 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:28:20,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 1238 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 22:28:20,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-07-13 22:28:20,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2022-07-13 22:28:20,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 139 states have (on average 1.1798561151079137) internal successors, (164), 142 states have internal predecessors, (164), 73 states have call successors, (73), 21 states have call predecessors, (73), 21 states have return successors, (74), 70 states have call predecessors, (74), 70 states have call successors, (74) [2022-07-13 22:28:20,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 311 transitions. [2022-07-13 22:28:20,679 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 311 transitions. Word has length 102 [2022-07-13 22:28:20,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:28:20,680 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 311 transitions. [2022-07-13 22:28:20,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-13 22:28:20,680 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 311 transitions. [2022-07-13 22:28:20,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-13 22:28:20,681 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:28:20,681 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1] [2022-07-13 22:28:20,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 22:28:20,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:20,901 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:28:20,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:28:20,902 INFO L85 PathProgramCache]: Analyzing trace with hash 191134547, now seen corresponding path program 2 times [2022-07-13 22:28:20,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:28:20,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618146893] [2022-07-13 22:28:20,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:20,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:28:20,939 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:28:20,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1241518774] [2022-07-13 22:28:20,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:28:20,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:20,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:28:20,948 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:28:20,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 22:28:21,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-13 22:28:21,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:28:21,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 1918 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 22:28:21,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:28:21,270 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-07-13 22:28:21,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:28:21,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:28:21,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618146893] [2022-07-13 22:28:21,271 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:28:21,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241518774] [2022-07-13 22:28:21,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241518774] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:28:21,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:28:21,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:28:21,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959927040] [2022-07-13 22:28:21,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:28:21,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:28:21,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:28:21,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:28:21,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:28:21,273 INFO L87 Difference]: Start difference. First operand 234 states and 311 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 22:28:21,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:28:21,297 INFO L93 Difference]: Finished difference Result 409 states and 535 transitions. [2022-07-13 22:28:21,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:28:21,297 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 117 [2022-07-13 22:28:21,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:28:21,299 INFO L225 Difference]: With dead ends: 409 [2022-07-13 22:28:21,299 INFO L226 Difference]: Without dead ends: 239 [2022-07-13 22:28:21,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:28:21,300 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 2 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:28:21,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1198 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:28:21,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-07-13 22:28:21,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2022-07-13 22:28:21,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 143 states have (on average 1.1748251748251748) internal successors, (168), 146 states have internal predecessors, (168), 73 states have call successors, (73), 21 states have call predecessors, (73), 22 states have return successors, (75), 71 states have call predecessors, (75), 70 states have call successors, (75) [2022-07-13 22:28:21,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 316 transitions. [2022-07-13 22:28:21,311 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 316 transitions. Word has length 117 [2022-07-13 22:28:21,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:28:21,311 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 316 transitions. [2022-07-13 22:28:21,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 22:28:21,312 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 316 transitions. [2022-07-13 22:28:21,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-13 22:28:21,313 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:28:21,313 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:28:21,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 22:28:21,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:21,532 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:28:21,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:28:21,532 INFO L85 PathProgramCache]: Analyzing trace with hash 389087133, now seen corresponding path program 1 times [2022-07-13 22:28:21,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:28:21,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512405354] [2022-07-13 22:28:21,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:21,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:28:21,576 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:28:21,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [219720814] [2022-07-13 22:28:21,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:21,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:21,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:28:21,578 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:28:21,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 22:28:21,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:21,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 2529 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 22:28:21,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:28:22,019 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-13 22:28:22,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:28:22,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:28:22,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512405354] [2022-07-13 22:28:22,020 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:28:22,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219720814] [2022-07-13 22:28:22,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219720814] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:28:22,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:28:22,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:28:22,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197240040] [2022-07-13 22:28:22,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:28:22,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:28:22,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:28:22,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:28:22,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:28:22,022 INFO L87 Difference]: Start difference. First operand 239 states and 316 transitions. Second operand has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) [2022-07-13 22:28:22,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:28:22,366 INFO L93 Difference]: Finished difference Result 439 states and 576 transitions. [2022-07-13 22:28:22,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:28:22,367 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) Word has length 123 [2022-07-13 22:28:22,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:28:22,368 INFO L225 Difference]: With dead ends: 439 [2022-07-13 22:28:22,368 INFO L226 Difference]: Without dead ends: 237 [2022-07-13 22:28:22,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:28:22,370 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 392 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 1409 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:28:22,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 1409 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 22:28:22,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-07-13 22:28:22,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2022-07-13 22:28:22,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 142 states have (on average 1.1690140845070423) internal successors, (166), 144 states have internal predecessors, (166), 73 states have call successors, (73), 21 states have call predecessors, (73), 21 states have return successors, (71), 71 states have call predecessors, (71), 70 states have call successors, (71) [2022-07-13 22:28:22,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 310 transitions. [2022-07-13 22:28:22,383 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 310 transitions. Word has length 123 [2022-07-13 22:28:22,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:28:22,391 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 310 transitions. [2022-07-13 22:28:22,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) [2022-07-13 22:28:22,391 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 310 transitions. [2022-07-13 22:28:22,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-13 22:28:22,393 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:28:22,393 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:28:22,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 22:28:22,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:22,607 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:28:22,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:28:22,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1195830657, now seen corresponding path program 1 times [2022-07-13 22:28:22,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:28:22,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071574263] [2022-07-13 22:28:22,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:22,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:28:22,721 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:28:22,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2071103975] [2022-07-13 22:28:22,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:22,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:22,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:28:22,723 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:28:22,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 22:28:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:23,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 2811 conjuncts, 327 conjunts are in the unsatisfiable core [2022-07-13 22:28:23,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:28:23,332 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-13 22:28:23,590 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-07-13 22:28:23,593 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-07-13 22:28:23,789 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-13 22:28:24,029 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-13 22:28:24,029 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 37 [2022-07-13 22:28:24,236 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-13 22:28:24,236 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-07-13 22:28:35,871 INFO L356 Elim1Store]: treesize reduction 91, result has 30.0 percent of original size [2022-07-13 22:28:35,871 INFO L390 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 [2022-07-13 22:28:35,884 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-07-13 22:28:36,392 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-07-13 22:28:36,392 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-07-13 22:28:41,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:28:41,727 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 22:28:41,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:28:41,729 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2022-07-13 22:28:41,763 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-07-13 22:28:41,763 INFO L390 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 [2022-07-13 22:29:24,565 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 28 proven. 112 refuted. 2 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 22:29:24,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:29:31,405 WARN L233 SmtUtils]: Spent 6.17s on a formula simplification that was a NOOP. DAG size: 125 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-13 22:29:41,635 WARN L233 SmtUtils]: Spent 10.23s on a formula simplification that was a NOOP. DAG size: 75 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-13 22:29:51,460 WARN L233 SmtUtils]: Spent 7.52s on a formula simplification that was a NOOP. DAG size: 81 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-13 22:29:57,630 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|v_aws_array_list_is_valid_~#required_size~0.base_14| Int)) (let ((.cse0 (let ((.cse1 (select |c_#memory_int| |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.base|))) (* (select .cse1 (+ |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.offset| 24)) (select .cse1 (+ |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.offset| 16)))))) (<= (mod .cse0 18446744073709551616) (mod (select (select (store |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_14| (store (select |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_14|) 0 .cse0)) |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.base|) (+ |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.offset| 8)) 18446744073709551616)))) (forall ((|v_aws_array_list_is_valid_~#required_size~0.base_14| Int)) (let ((.cse4 (+ |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.offset| 24))) (let ((.cse2 (let ((.cse5 (select |c_#memory_int| |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.base|))) (* (select .cse5 .cse4) (select .cse5 (+ |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.offset| 16)))))) (let ((.cse3 (select (store |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_14| (store (select |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_14|) 0 .cse2)) |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.base|))) (or (not (<= (mod .cse2 18446744073709551616) (mod (select .cse3 (+ |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.offset| 8)) 18446744073709551616))) (not (= (mod (select .cse3 .cse4) 18446744073709551616) 0)))))))) is different from false [2022-07-13 22:29:57,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:29:57,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071574263] [2022-07-13 22:29:57,634 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:29:57,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071103975] [2022-07-13 22:29:57,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071103975] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:29:57,634 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:29:57,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2022-07-13 22:29:57,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365366818] [2022-07-13 22:29:57,634 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 22:29:57,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-07-13 22:29:57,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:29:57,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-07-13 22:29:57,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=4429, Unknown=40, NotChecked=134, Total=4830 [2022-07-13 22:29:57,637 INFO L87 Difference]: Start difference. First operand 237 states and 310 transitions. Second operand has 66 states, 53 states have (on average 1.8679245283018868) internal successors, (99), 48 states have internal predecessors, (99), 20 states have call successors, (24), 11 states have call predecessors, (24), 17 states have return successors, (22), 18 states have call predecessors, (22), 18 states have call successors, (22) [2022-07-13 22:30:39,381 WARN L233 SmtUtils]: Spent 8.40s on a formula simplification. DAG size of input: 88 DAG size of output: 87 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-13 22:30:42,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:30:42,475 INFO L93 Difference]: Finished difference Result 335 states and 440 transitions. [2022-07-13 22:30:42,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-07-13 22:30:42,476 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 53 states have (on average 1.8679245283018868) internal successors, (99), 48 states have internal predecessors, (99), 20 states have call successors, (24), 11 states have call predecessors, (24), 17 states have return successors, (22), 18 states have call predecessors, (22), 18 states have call successors, (22) Word has length 153 [2022-07-13 22:30:42,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:30:42,478 INFO L225 Difference]: With dead ends: 335 [2022-07-13 22:30:42,478 INFO L226 Difference]: Without dead ends: 333 [2022-07-13 22:30:42,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 90 SyntacticMatches, 5 SemanticMatches, 101 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2831 ImplicationChecksByTransitivity, 95.1s TimeCoverageRelationStatistics Valid=561, Invalid=9694, Unknown=51, NotChecked=200, Total=10506 [2022-07-13 22:30:42,480 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 267 mSDsluCounter, 3265 mSDsCounter, 0 mSdLazyCounter, 3737 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 3528 SdHoareTripleChecker+Invalid, 8318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 3737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4272 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 22:30:42,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 3528 Invalid, 8318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 3737 Invalid, 0 Unknown, 4272 Unchecked, 2.5s Time] [2022-07-13 22:30:42,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-07-13 22:30:42,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 308. [2022-07-13 22:30:42,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 189 states have (on average 1.164021164021164) internal successors, (220), 194 states have internal predecessors, (220), 86 states have call successors, (86), 29 states have call predecessors, (86), 32 states have return successors, (105), 84 states have call predecessors, (105), 83 states have call successors, (105) [2022-07-13 22:30:42,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 411 transitions. [2022-07-13 22:30:42,521 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 411 transitions. Word has length 153 [2022-07-13 22:30:42,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:30:42,521 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 411 transitions. [2022-07-13 22:30:42,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 53 states have (on average 1.8679245283018868) internal successors, (99), 48 states have internal predecessors, (99), 20 states have call successors, (24), 11 states have call predecessors, (24), 17 states have return successors, (22), 18 states have call predecessors, (22), 18 states have call successors, (22) [2022-07-13 22:30:42,522 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 411 transitions. [2022-07-13 22:30:42,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-07-13 22:30:42,525 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:30:42,525 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:30:42,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-13 22:30:42,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:30:42,739 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:30:42,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:30:42,740 INFO L85 PathProgramCache]: Analyzing trace with hash 867805371, now seen corresponding path program 1 times [2022-07-13 22:30:42,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:30:42,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836525402] [2022-07-13 22:30:42,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:30:42,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:30:42,792 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:30:42,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1033101407] [2022-07-13 22:30:42,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:30:42,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:30:42,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:30:42,808 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:30:42,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 22:30:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:43,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 2823 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-13 22:30:43,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:30:43,321 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 126 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-13 22:30:43,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:30:43,876 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 19 proven. 31 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-07-13 22:30:43,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:30:43,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836525402] [2022-07-13 22:30:43,877 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:30:43,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033101407] [2022-07-13 22:30:43,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033101407] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:30:43,877 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:30:43,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 21 [2022-07-13 22:30:43,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482770809] [2022-07-13 22:30:43,877 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:30:43,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-13 22:30:43,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:30:43,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-13 22:30:43,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2022-07-13 22:30:43,878 INFO L87 Difference]: Start difference. First operand 308 states and 411 transitions. Second operand has 21 states, 18 states have (on average 5.944444444444445) internal successors, (107), 14 states have internal predecessors, (107), 5 states have call successors, (31), 3 states have call predecessors, (31), 7 states have return successors, (32), 8 states have call predecessors, (32), 4 states have call successors, (32) [2022-07-13 22:30:44,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:30:44,258 INFO L93 Difference]: Finished difference Result 527 states and 718 transitions. [2022-07-13 22:30:44,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 22:30:44,259 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 5.944444444444445) internal successors, (107), 14 states have internal predecessors, (107), 5 states have call successors, (31), 3 states have call predecessors, (31), 7 states have return successors, (32), 8 states have call predecessors, (32), 4 states have call successors, (32) Word has length 171 [2022-07-13 22:30:44,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:30:44,261 INFO L225 Difference]: With dead ends: 527 [2022-07-13 22:30:44,261 INFO L226 Difference]: Without dead ends: 316 [2022-07-13 22:30:44,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 320 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2022-07-13 22:30:44,262 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 19 mSDsluCounter, 4358 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 4658 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:30:44,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 4658 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 22:30:44,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-07-13 22:30:44,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 315. [2022-07-13 22:30:44,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 195 states have (on average 1.1641025641025642) internal successors, (227), 201 states have internal predecessors, (227), 86 states have call successors, (86), 29 states have call predecessors, (86), 33 states have return successors, (119), 84 states have call predecessors, (119), 83 states have call successors, (119) [2022-07-13 22:30:44,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 432 transitions. [2022-07-13 22:30:44,302 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 432 transitions. Word has length 171 [2022-07-13 22:30:44,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:30:44,303 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 432 transitions. [2022-07-13 22:30:44,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 5.944444444444445) internal successors, (107), 14 states have internal predecessors, (107), 5 states have call successors, (31), 3 states have call predecessors, (31), 7 states have return successors, (32), 8 states have call predecessors, (32), 4 states have call successors, (32) [2022-07-13 22:30:44,304 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 432 transitions. [2022-07-13 22:30:44,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-07-13 22:30:44,305 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:30:44,306 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:30:44,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 22:30:44,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:30:44,527 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:30:44,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:30:44,527 INFO L85 PathProgramCache]: Analyzing trace with hash 180166188, now seen corresponding path program 1 times [2022-07-13 22:30:44,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:30:44,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096999877] [2022-07-13 22:30:44,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:30:44,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:30:44,570 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:30:44,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [3027958] [2022-07-13 22:30:44,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:30:44,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:30:44,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:30:44,572 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:30:44,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 22:30:44,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:44,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 2858 conjuncts, 43 conjunts are in the unsatisfiable core [2022-07-13 22:30:44,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:30:45,020 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-07-13 22:30:45,206 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 98 proven. 8 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-13 22:30:45,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:30:45,861 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 32 proven. 15 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-07-13 22:30:45,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:30:45,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096999877] [2022-07-13 22:30:45,861 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:30:45,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3027958] [2022-07-13 22:30:45,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3027958] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:30:45,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:30:45,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 26 [2022-07-13 22:30:45,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653607649] [2022-07-13 22:30:45,882 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:30:45,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-13 22:30:45,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:30:45,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-13 22:30:45,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=595, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:30:45,883 INFO L87 Difference]: Start difference. First operand 315 states and 432 transitions. Second operand has 26 states, 21 states have (on average 5.428571428571429) internal successors, (114), 19 states have internal predecessors, (114), 7 states have call successors, (32), 3 states have call predecessors, (32), 8 states have return successors, (33), 9 states have call predecessors, (33), 6 states have call successors, (33) [2022-07-13 22:30:46,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:30:46,726 INFO L93 Difference]: Finished difference Result 545 states and 746 transitions. [2022-07-13 22:30:46,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 22:30:46,727 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 5.428571428571429) internal successors, (114), 19 states have internal predecessors, (114), 7 states have call successors, (32), 3 states have call predecessors, (32), 8 states have return successors, (33), 9 states have call predecessors, (33), 6 states have call successors, (33) Word has length 171 [2022-07-13 22:30:46,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:30:46,729 INFO L225 Difference]: With dead ends: 545 [2022-07-13 22:30:46,729 INFO L226 Difference]: Without dead ends: 330 [2022-07-13 22:30:46,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 315 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2022-07-13 22:30:46,730 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 26 mSDsluCounter, 6293 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 6591 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 22:30:46,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 6591 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 22:30:46,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-07-13 22:30:46,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 315. [2022-07-13 22:30:46,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 195 states have (on average 1.1641025641025642) internal successors, (227), 201 states have internal predecessors, (227), 86 states have call successors, (86), 29 states have call predecessors, (86), 33 states have return successors, (117), 84 states have call predecessors, (117), 83 states have call successors, (117) [2022-07-13 22:30:46,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 430 transitions. [2022-07-13 22:30:46,761 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 430 transitions. Word has length 171 [2022-07-13 22:30:46,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:30:46,762 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 430 transitions. [2022-07-13 22:30:46,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 5.428571428571429) internal successors, (114), 19 states have internal predecessors, (114), 7 states have call successors, (32), 3 states have call predecessors, (32), 8 states have return successors, (33), 9 states have call predecessors, (33), 6 states have call successors, (33) [2022-07-13 22:30:46,762 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 430 transitions. [2022-07-13 22:30:46,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-07-13 22:30:46,764 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:30:46,764 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:30:46,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-13 22:30:46,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-13 22:30:46,971 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:30:46,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:30:46,972 INFO L85 PathProgramCache]: Analyzing trace with hash 264936878, now seen corresponding path program 2 times [2022-07-13 22:30:46,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:30:46,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793378479] [2022-07-13 22:30:46,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:30:46,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:30:47,019 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:30:47,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [263048810] [2022-07-13 22:30:47,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:30:47,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:30:47,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:30:47,020 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:30:47,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 22:30:47,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:30:47,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:30:47,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 2854 conjuncts, 67 conjunts are in the unsatisfiable core [2022-07-13 22:30:47,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:30:47,821 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-13 22:30:47,911 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 22:30:47,942 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-13 22:30:47,999 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-13 22:30:47,999 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 27 [2022-07-13 22:30:48,027 INFO L356 Elim1Store]: treesize reduction 27, result has 15.6 percent of original size [2022-07-13 22:30:48,028 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20 [2022-07-13 22:30:48,179 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1054 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1054) |c_#memory_$Pointer$.base|)) is different from true [2022-07-13 22:30:48,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:30:48,371 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 81 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-13 22:30:48,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:30:48,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:30:48,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793378479] [2022-07-13 22:30:48,583 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:30:48,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263048810] [2022-07-13 22:30:48,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263048810] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:30:48,583 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:30:48,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2022-07-13 22:30:48,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296446131] [2022-07-13 22:30:48,584 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 22:30:48,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-13 22:30:48,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:30:48,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-13 22:30:48,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=4, NotChecked=40, Total=506 [2022-07-13 22:30:48,585 INFO L87 Difference]: Start difference. First operand 315 states and 430 transitions. Second operand has 22 states, 20 states have (on average 3.85) internal successors, (77), 18 states have internal predecessors, (77), 8 states have call successors, (23), 7 states have call predecessors, (23), 8 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2022-07-13 22:30:49,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:30:49,637 INFO L93 Difference]: Finished difference Result 564 states and 765 transitions. [2022-07-13 22:30:49,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 22:30:49,637 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.85) internal successors, (77), 18 states have internal predecessors, (77), 8 states have call successors, (23), 7 states have call predecessors, (23), 8 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) Word has length 165 [2022-07-13 22:30:49,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:30:49,639 INFO L225 Difference]: With dead ends: 564 [2022-07-13 22:30:49,639 INFO L226 Difference]: Without dead ends: 336 [2022-07-13 22:30:49,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 253 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=699, Unknown=12, NotChecked=54, Total=870 [2022-07-13 22:30:49,640 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 197 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 1531 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 3105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1378 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 22:30:49,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 1301 Invalid, 3105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1531 Invalid, 0 Unknown, 1378 Unchecked, 0.9s Time] [2022-07-13 22:30:49,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2022-07-13 22:30:49,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 318. [2022-07-13 22:30:49,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 197 states have (on average 1.1624365482233503) internal successors, (229), 203 states have internal predecessors, (229), 86 states have call successors, (86), 30 states have call predecessors, (86), 34 states have return successors, (116), 84 states have call predecessors, (116), 83 states have call successors, (116) [2022-07-13 22:30:49,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 431 transitions. [2022-07-13 22:30:49,668 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 431 transitions. Word has length 165 [2022-07-13 22:30:49,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:30:49,668 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 431 transitions. [2022-07-13 22:30:49,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.85) internal successors, (77), 18 states have internal predecessors, (77), 8 states have call successors, (23), 7 states have call predecessors, (23), 8 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2022-07-13 22:30:49,669 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 431 transitions. [2022-07-13 22:30:49,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-13 22:30:49,670 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:30:49,670 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:30:49,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-13 22:30:49,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-13 22:30:49,887 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:30:49,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:30:49,888 INFO L85 PathProgramCache]: Analyzing trace with hash 939814841, now seen corresponding path program 1 times [2022-07-13 22:30:49,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:30:49,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207468426] [2022-07-13 22:30:49,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:30:49,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:30:49,935 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:30:49,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [100779552] [2022-07-13 22:30:49,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:30:49,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:30:49,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:30:49,952 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:30:49,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 22:30:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:50,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 2811 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 22:30:50,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:30:50,445 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-13 22:30:50,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:30:50,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:30:50,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207468426] [2022-07-13 22:30:50,445 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:30:50,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100779552] [2022-07-13 22:30:50,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100779552] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:30:50,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:30:50,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:30:50,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912140707] [2022-07-13 22:30:50,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:30:50,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:30:50,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:30:50,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:30:50,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:30:50,447 INFO L87 Difference]: Start difference. First operand 318 states and 431 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-13 22:30:50,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:30:50,654 INFO L93 Difference]: Finished difference Result 556 states and 812 transitions. [2022-07-13 22:30:50,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:30:50,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 155 [2022-07-13 22:30:50,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:30:50,656 INFO L225 Difference]: With dead ends: 556 [2022-07-13 22:30:50,657 INFO L226 Difference]: Without dead ends: 328 [2022-07-13 22:30:50,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:30:50,658 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 7 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 22:30:50,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1151 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 22:30:50,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-07-13 22:30:50,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 320. [2022-07-13 22:30:50,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 199 states have (on average 1.1608040201005025) internal successors, (231), 205 states have internal predecessors, (231), 86 states have call successors, (86), 30 states have call predecessors, (86), 34 states have return successors, (116), 84 states have call predecessors, (116), 83 states have call successors, (116) [2022-07-13 22:30:50,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 433 transitions. [2022-07-13 22:30:50,674 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 433 transitions. Word has length 155 [2022-07-13 22:30:50,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:30:50,676 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 433 transitions. [2022-07-13 22:30:50,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-13 22:30:50,676 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 433 transitions. [2022-07-13 22:30:50,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-13 22:30:50,677 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:30:50,677 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:30:50,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-13 22:30:50,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-13 22:30:50,897 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:30:50,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:30:50,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1063071274, now seen corresponding path program 1 times [2022-07-13 22:30:50,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:30:50,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79544531] [2022-07-13 22:30:50,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:30:50,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:30:50,941 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:30:50,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [367410057] [2022-07-13 22:30:50,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:30:50,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:30:50,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:30:50,943 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:30:50,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-13 22:30:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:51,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 2855 conjuncts, 102 conjunts are in the unsatisfiable core [2022-07-13 22:30:51,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:30:51,389 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-13 22:30:51,519 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-07-13 22:30:51,704 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 22:30:51,750 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2022-07-13 22:30:55,859 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-13 22:30:55,859 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 32 [2022-07-13 22:30:55,922 INFO L356 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2022-07-13 22:30:55,923 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2022-07-13 22:30:56,180 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_1379 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1379)))) is different from true [2022-07-13 22:31:02,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:31:02,501 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2022-07-13 22:31:02,508 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-13 22:31:02,508 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-13 22:31:21,213 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-07-13 22:31:21,215 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-07-13 22:31:21,265 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 82 proven. 11 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-13 22:31:21,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:31:21,683 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2022-07-13 22:31:21,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:31:21,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79544531] [2022-07-13 22:31:21,727 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:31:21,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367410057] [2022-07-13 22:31:21,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367410057] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:31:21,727 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:31:21,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2022-07-13 22:31:21,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051054469] [2022-07-13 22:31:21,728 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 22:31:21,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-13 22:31:21,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:31:21,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-13 22:31:21,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1122, Unknown=20, NotChecked=68, Total=1332 [2022-07-13 22:31:21,729 INFO L87 Difference]: Start difference. First operand 320 states and 433 transitions. Second operand has 31 states, 27 states have (on average 2.962962962962963) internal successors, (80), 22 states have internal predecessors, (80), 9 states have call successors, (22), 8 states have call predecessors, (22), 10 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2022-07-13 22:31:32,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:31:32,230 INFO L93 Difference]: Finished difference Result 767 states and 1074 transitions. [2022-07-13 22:31:32,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-07-13 22:31:32,230 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 2.962962962962963) internal successors, (80), 22 states have internal predecessors, (80), 9 states have call successors, (22), 8 states have call predecessors, (22), 10 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) Word has length 161 [2022-07-13 22:31:32,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:31:32,233 INFO L225 Difference]: With dead ends: 767 [2022-07-13 22:31:32,233 INFO L226 Difference]: Without dead ends: 543 [2022-07-13 22:31:32,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 226 SyntacticMatches, 5 SemanticMatches, 56 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 38.3s TimeCoverageRelationStatistics Valid=283, Invalid=2865, Unknown=48, NotChecked=110, Total=3306 [2022-07-13 22:31:32,235 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 292 mSDsluCounter, 2042 mSDsCounter, 0 mSdLazyCounter, 2332 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 2473 SdHoareTripleChecker+Invalid, 5513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 2332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2920 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 22:31:32,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 2473 Invalid, 5513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 2332 Invalid, 0 Unknown, 2920 Unchecked, 1.6s Time] [2022-07-13 22:31:32,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-07-13 22:31:32,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 482. [2022-07-13 22:31:32,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 299 states have (on average 1.1705685618729098) internal successors, (350), 311 states have internal predecessors, (350), 128 states have call successors, (128), 47 states have call predecessors, (128), 54 states have return successors, (206), 123 states have call predecessors, (206), 125 states have call successors, (206) [2022-07-13 22:31:32,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 684 transitions. [2022-07-13 22:31:32,257 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 684 transitions. Word has length 161 [2022-07-13 22:31:32,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:31:32,259 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 684 transitions. [2022-07-13 22:31:32,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 2.962962962962963) internal successors, (80), 22 states have internal predecessors, (80), 9 states have call successors, (22), 8 states have call predecessors, (22), 10 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2022-07-13 22:31:32,260 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 684 transitions. [2022-07-13 22:31:32,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-13 22:31:32,261 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:31:32,261 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:31:32,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-13 22:31:32,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-13 22:31:32,483 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:31:32,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:31:32,483 INFO L85 PathProgramCache]: Analyzing trace with hash -179029957, now seen corresponding path program 1 times [2022-07-13 22:31:32,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:31:32,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824801973] [2022-07-13 22:31:32,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:31:32,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:31:32,528 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:31:32,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [450410193] [2022-07-13 22:31:32,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:31:32,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:31:32,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:31:32,530 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:31:32,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-13 22:31:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:31:33,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 2816 conjuncts, 111 conjunts are in the unsatisfiable core [2022-07-13 22:31:33,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:31:33,014 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-13 22:31:33,364 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-07-13 22:31:35,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:31:35,607 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-13 22:31:35,612 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-07-13 22:31:35,800 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_1535 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1535) |c_#memory_$Pointer$.base|))) is different from true [2022-07-13 22:31:36,416 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-07-13 22:31:36,422 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-13 22:31:36,423 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-13 22:31:50,802 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-07-13 22:31:50,802 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 11 [2022-07-13 22:31:50,804 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-07-13 22:31:50,839 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 85 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-13 22:31:50,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:31:51,766 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 44 [2022-07-13 22:31:51,772 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-07-13 22:31:51,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:31:51,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824801973] [2022-07-13 22:31:51,893 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:31:51,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450410193] [2022-07-13 22:31:51,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450410193] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:31:51,893 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:31:51,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2022-07-13 22:31:51,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502792290] [2022-07-13 22:31:51,893 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 22:31:51,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-13 22:31:51,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:31:51,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-13 22:31:51,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1404, Unknown=11, NotChecked=76, Total=1640 [2022-07-13 22:31:51,894 INFO L87 Difference]: Start difference. First operand 482 states and 684 transitions. Second operand has 32 states, 28 states have (on average 2.7142857142857144) internal successors, (76), 23 states have internal predecessors, (76), 8 states have call successors, (21), 8 states have call predecessors, (21), 9 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) [2022-07-13 22:31:56,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:31:56,277 INFO L93 Difference]: Finished difference Result 1131 states and 1613 transitions. [2022-07-13 22:31:56,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-13 22:31:56,278 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 2.7142857142857144) internal successors, (76), 23 states have internal predecessors, (76), 8 states have call successors, (21), 8 states have call predecessors, (21), 9 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) Word has length 155 [2022-07-13 22:31:56,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:31:56,281 INFO L225 Difference]: With dead ends: 1131 [2022-07-13 22:31:56,281 INFO L226 Difference]: Without dead ends: 764 [2022-07-13 22:31:56,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 217 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=263, Invalid=2484, Unknown=13, NotChecked=102, Total=2862 [2022-07-13 22:31:56,283 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 261 mSDsluCounter, 4123 mSDsCounter, 0 mSdLazyCounter, 3165 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 4576 SdHoareTripleChecker+Invalid, 7690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 3165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4296 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:31:56,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 4576 Invalid, 7690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 3165 Invalid, 0 Unknown, 4296 Unchecked, 2.1s Time] [2022-07-13 22:31:56,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-07-13 22:31:56,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 712. [2022-07-13 22:31:56,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 440 states have (on average 1.1636363636363636) internal successors, (512), 453 states have internal predecessors, (512), 193 states have call successors, (193), 69 states have call predecessors, (193), 78 states have return successors, (313), 189 states have call predecessors, (313), 187 states have call successors, (313) [2022-07-13 22:31:56,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1018 transitions. [2022-07-13 22:31:56,314 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1018 transitions. Word has length 155 [2022-07-13 22:31:56,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:31:56,314 INFO L495 AbstractCegarLoop]: Abstraction has 712 states and 1018 transitions. [2022-07-13 22:31:56,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 2.7142857142857144) internal successors, (76), 23 states have internal predecessors, (76), 8 states have call successors, (21), 8 states have call predecessors, (21), 9 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) [2022-07-13 22:31:56,314 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1018 transitions. [2022-07-13 22:31:56,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-13 22:31:56,316 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:31:56,316 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:31:56,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-13 22:31:56,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-13 22:31:56,535 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:31:56,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:31:56,535 INFO L85 PathProgramCache]: Analyzing trace with hash 459672185, now seen corresponding path program 1 times [2022-07-13 22:31:56,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:31:56,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458927683] [2022-07-13 22:31:56,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:31:56,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:31:56,609 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:31:56,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1201290081] [2022-07-13 22:31:56,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:31:56,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:31:56,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:31:56,612 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:31:56,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-13 22:31:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:31:57,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 2820 conjuncts, 148 conjunts are in the unsatisfiable core [2022-07-13 22:31:57,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:31:57,256 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-07-13 22:31:57,258 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-07-13 22:31:57,989 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1672 Int) (v_ArrVal_1673 (Array Int Int)) (v_ArrVal_1676 Int)) (and (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1673)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1676)) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1672))))) is different from true [2022-07-13 22:31:58,713 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2022-07-13 22:31:58,717 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-07-13 22:31:58,720 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-07-13 22:31:58,721 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2022-07-13 22:31:58,764 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 108 proven. 20 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 22:31:58,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:31:59,818 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_139| Int) (v_ArrVal_1695 Int) (v_ArrVal_1696 Int) (v_ArrVal_1694 (Array Int Int))) (or (= (mod (select (select (store |c_#memory_int| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_139| v_ArrVal_1694) |c_aws_array_list_ensure_capacity_~list#1.base|) (+ |c_aws_array_list_ensure_capacity_~list#1.offset| 8)) 18446744073709551616) 0) (let ((.cse0 (+ |c_aws_array_list_ensure_capacity_~list#1.offset| 32))) (and (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_139| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_139|) 0 v_ArrVal_1695)) |c_aws_array_list_ensure_capacity_~list#1.base|) .cse0) 0) (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_139| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_139|) 0 v_ArrVal_1696)) |c_aws_array_list_ensure_capacity_~list#1.base|) .cse0) 0))))) is different from false [2022-07-13 22:31:59,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:31:59,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458927683] [2022-07-13 22:31:59,821 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:31:59,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201290081] [2022-07-13 22:31:59,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201290081] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:31:59,821 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:31:59,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2022-07-13 22:31:59,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575277681] [2022-07-13 22:31:59,821 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 22:31:59,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-13 22:31:59,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:31:59,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-13 22:31:59,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1222, Unknown=9, NotChecked=142, Total=1482 [2022-07-13 22:31:59,823 INFO L87 Difference]: Start difference. First operand 712 states and 1018 transitions. Second operand has 33 states, 28 states have (on average 3.2142857142857144) internal successors, (90), 27 states have internal predecessors, (90), 12 states have call successors, (24), 7 states have call predecessors, (24), 9 states have return successors, (22), 10 states have call predecessors, (22), 12 states have call successors, (22) [2022-07-13 22:32:03,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:32:03,801 INFO L93 Difference]: Finished difference Result 1432 states and 2067 transitions. [2022-07-13 22:32:03,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-07-13 22:32:03,801 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 28 states have (on average 3.2142857142857144) internal successors, (90), 27 states have internal predecessors, (90), 12 states have call successors, (24), 7 states have call predecessors, (24), 9 states have return successors, (22), 10 states have call predecessors, (22), 12 states have call successors, (22) Word has length 161 [2022-07-13 22:32:03,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:32:03,805 INFO L225 Difference]: With dead ends: 1432 [2022-07-13 22:32:03,805 INFO L226 Difference]: Without dead ends: 854 [2022-07-13 22:32:03,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 201 SyntacticMatches, 4 SemanticMatches, 62 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=326, Invalid=3444, Unknown=20, NotChecked=242, Total=4032 [2022-07-13 22:32:03,820 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 213 mSDsluCounter, 2019 mSDsCounter, 0 mSdLazyCounter, 3264 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 2283 SdHoareTripleChecker+Invalid, 5398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 3264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1996 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 22:32:03,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 2283 Invalid, 5398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 3264 Invalid, 0 Unknown, 1996 Unchecked, 2.7s Time] [2022-07-13 22:32:03,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2022-07-13 22:32:03,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 748. [2022-07-13 22:32:03,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 464 states have (on average 1.1594827586206897) internal successors, (538), 478 states have internal predecessors, (538), 201 states have call successors, (201), 76 states have call predecessors, (201), 82 states have return successors, (330), 193 states have call predecessors, (330), 195 states have call successors, (330) [2022-07-13 22:32:03,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1069 transitions. [2022-07-13 22:32:03,913 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1069 transitions. Word has length 161 [2022-07-13 22:32:03,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:32:03,914 INFO L495 AbstractCegarLoop]: Abstraction has 748 states and 1069 transitions. [2022-07-13 22:32:03,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 28 states have (on average 3.2142857142857144) internal successors, (90), 27 states have internal predecessors, (90), 12 states have call successors, (24), 7 states have call predecessors, (24), 9 states have return successors, (22), 10 states have call predecessors, (22), 12 states have call successors, (22) [2022-07-13 22:32:03,914 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1069 transitions. [2022-07-13 22:32:03,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-07-13 22:32:03,916 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:32:03,916 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:32:03,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-13 22:32:04,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-13 22:32:04,152 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:32:04,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:32:04,152 INFO L85 PathProgramCache]: Analyzing trace with hash 118296445, now seen corresponding path program 2 times [2022-07-13 22:32:04,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:32:04,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139367063] [2022-07-13 22:32:04,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:32:04,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:32:04,208 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:32:04,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [94348067] [2022-07-13 22:32:04,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:32:04,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:32:04,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:32:04,213 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:32:04,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-13 22:32:05,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:32:05,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:32:05,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 2819 conjuncts, 66 conjunts are in the unsatisfiable core [2022-07-13 22:32:05,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:32:05,301 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-13 22:32:05,303 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-13 22:32:05,438 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 91 proven. 8 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-07-13 22:32:05,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:32:06,257 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 6 proven. 41 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-07-13 22:32:06,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:32:06,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139367063] [2022-07-13 22:32:06,257 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:32:06,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94348067] [2022-07-13 22:32:06,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94348067] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:32:06,257 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:32:06,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 26 [2022-07-13 22:32:06,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438804911] [2022-07-13 22:32:06,258 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:32:06,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-13 22:32:06,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:32:06,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-13 22:32:06,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:32:06,259 INFO L87 Difference]: Start difference. First operand 748 states and 1069 transitions. Second operand has 26 states, 22 states have (on average 5.409090909090909) internal successors, (119), 18 states have internal predecessors, (119), 8 states have call successors, (38), 5 states have call predecessors, (38), 9 states have return successors, (39), 10 states have call predecessors, (39), 7 states have call successors, (39) [2022-07-13 22:32:08,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:32:08,559 INFO L93 Difference]: Finished difference Result 1366 states and 1964 transitions. [2022-07-13 22:32:08,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-13 22:32:08,560 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 5.409090909090909) internal successors, (119), 18 states have internal predecessors, (119), 8 states have call successors, (38), 5 states have call predecessors, (38), 9 states have return successors, (39), 10 states have call predecessors, (39), 7 states have call successors, (39) Word has length 165 [2022-07-13 22:32:08,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:32:08,563 INFO L225 Difference]: With dead ends: 1366 [2022-07-13 22:32:08,563 INFO L226 Difference]: Without dead ends: 744 [2022-07-13 22:32:08,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 303 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=150, Invalid=1656, Unknown=0, NotChecked=0, Total=1806 [2022-07-13 22:32:08,566 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 114 mSDsluCounter, 3701 mSDsCounter, 0 mSdLazyCounter, 2822 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 3984 SdHoareTripleChecker+Invalid, 3140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 233 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-13 22:32:08,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 3984 Invalid, 3140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2822 Invalid, 0 Unknown, 233 Unchecked, 1.9s Time] [2022-07-13 22:32:08,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2022-07-13 22:32:08,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 723. [2022-07-13 22:32:08,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 448 states have (on average 1.1607142857142858) internal successors, (520), 462 states have internal predecessors, (520), 194 states have call successors, (194), 71 states have call predecessors, (194), 80 states have return successors, (314), 189 states have call predecessors, (314), 188 states have call successors, (314) [2022-07-13 22:32:08,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1028 transitions. [2022-07-13 22:32:08,597 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1028 transitions. Word has length 165 [2022-07-13 22:32:08,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:32:08,597 INFO L495 AbstractCegarLoop]: Abstraction has 723 states and 1028 transitions. [2022-07-13 22:32:08,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 5.409090909090909) internal successors, (119), 18 states have internal predecessors, (119), 8 states have call successors, (38), 5 states have call predecessors, (38), 9 states have return successors, (39), 10 states have call predecessors, (39), 7 states have call successors, (39) [2022-07-13 22:32:08,598 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1028 transitions. [2022-07-13 22:32:08,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-13 22:32:08,599 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:32:08,599 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:32:08,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-07-13 22:32:08,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:32:08,820 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:32:08,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:32:08,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1482041927, now seen corresponding path program 1 times [2022-07-13 22:32:08,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:32:08,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733106252] [2022-07-13 22:32:08,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:32:08,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:32:08,883 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:32:08,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [180791720] [2022-07-13 22:32:08,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:32:08,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:32:08,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:32:08,885 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:32:08,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-13 22:32:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:32:09,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 2820 conjuncts, 76 conjunts are in the unsatisfiable core [2022-07-13 22:32:09,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:32:09,375 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-13 22:32:13,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:32:13,615 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-13 22:32:13,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:32:13,622 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-13 22:32:14,782 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1947 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1947) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_1946 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1946)))) is different from true [2022-07-13 22:32:15,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:32:15,061 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-07-13 22:32:15,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:32:15,066 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-07-13 22:32:15,068 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-13 22:32:15,070 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 81 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-13 22:32:15,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:32:15,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:32:15,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733106252] [2022-07-13 22:32:15,332 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:32:15,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180791720] [2022-07-13 22:32:15,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180791720] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:32:15,333 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:32:15,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-07-13 22:32:15,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700801279] [2022-07-13 22:32:15,333 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 22:32:15,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-13 22:32:15,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:32:15,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-13 22:32:15,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=191, Unknown=13, NotChecked=28, Total=272 [2022-07-13 22:32:15,334 INFO L87 Difference]: Start difference. First operand 723 states and 1028 transitions. Second operand has 16 states, 15 states have (on average 5.0) internal successors, (75), 14 states have internal predecessors, (75), 5 states have call successors, (22), 5 states have call predecessors, (22), 6 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2022-07-13 22:32:18,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:32:18,424 INFO L93 Difference]: Finished difference Result 1159 states and 1638 transitions. [2022-07-13 22:32:18,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:32:18,425 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.0) internal successors, (75), 14 states have internal predecessors, (75), 5 states have call successors, (22), 5 states have call predecessors, (22), 6 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) Word has length 161 [2022-07-13 22:32:18,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:32:18,428 INFO L225 Difference]: With dead ends: 1159 [2022-07-13 22:32:18,428 INFO L226 Difference]: Without dead ends: 774 [2022-07-13 22:32:18,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 254 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=50, Invalid=245, Unknown=15, NotChecked=32, Total=342 [2022-07-13 22:32:18,430 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 185 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 3086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1955 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 22:32:18,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 1096 Invalid, 3086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 942 Invalid, 0 Unknown, 1955 Unchecked, 0.7s Time] [2022-07-13 22:32:18,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2022-07-13 22:32:18,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 723. [2022-07-13 22:32:18,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 448 states have (on average 1.1584821428571428) internal successors, (519), 464 states have internal predecessors, (519), 193 states have call successors, (193), 71 states have call predecessors, (193), 81 states have return successors, (313), 187 states have call predecessors, (313), 187 states have call successors, (313) [2022-07-13 22:32:18,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1025 transitions. [2022-07-13 22:32:18,495 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1025 transitions. Word has length 161 [2022-07-13 22:32:18,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:32:18,495 INFO L495 AbstractCegarLoop]: Abstraction has 723 states and 1025 transitions. [2022-07-13 22:32:18,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.0) internal successors, (75), 14 states have internal predecessors, (75), 5 states have call successors, (22), 5 states have call predecessors, (22), 6 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2022-07-13 22:32:18,496 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1025 transitions. [2022-07-13 22:32:18,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-13 22:32:18,497 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:32:18,497 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:32:18,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-13 22:32:18,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-13 22:32:18,711 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:32:18,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:32:18,712 INFO L85 PathProgramCache]: Analyzing trace with hash -626943109, now seen corresponding path program 1 times [2022-07-13 22:32:18,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:32:18,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807687971] [2022-07-13 22:32:18,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:32:18,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:32:18,756 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:32:18,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2036047391] [2022-07-13 22:32:18,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:32:18,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:32:18,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:32:18,772 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:32:18,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-13 22:32:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:32:19,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 2816 conjuncts, 78 conjunts are in the unsatisfiable core [2022-07-13 22:32:19,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:32:21,618 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2106 Int) (v_ArrVal_2107 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2107))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2106))))) is different from true