./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_get_at_ptr_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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_get_at_ptr_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 e0225ff20a5ba4b5245358ee525cfd28e9ed790cb06824ac87caa63c65a2c856 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 09:22:51,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 09:22:51,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 09:22:51,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 09:22:51,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 09:22:51,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 09:22:51,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 09:22:51,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 09:22:51,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 09:22:51,404 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 09:22:51,405 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 09:22:51,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 09:22:51,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 09:22:51,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 09:22:51,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 09:22:51,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 09:22:51,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 09:22:51,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 09:22:51,419 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 09:22:51,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 09:22:51,428 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 09:22:51,429 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 09:22:51,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 09:22:51,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 09:22:51,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 09:22:51,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 09:22:51,444 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 09:22:51,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 09:22:51,445 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 09:22:51,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 09:22:51,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 09:22:51,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 09:22:51,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 09:22:51,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 09:22:51,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 09:22:51,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 09:22:51,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 09:22:51,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 09:22:51,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 09:22:51,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 09:22:51,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 09:22:51,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 09:22:51,459 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 09:22:51,499 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 09:22:51,499 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 09:22:51,500 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 09:22:51,500 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 09:22:51,501 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 09:22:51,501 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 09:22:51,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 09:22:51,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 09:22:51,502 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 09:22:51,503 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 09:22:51,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 09:22:51,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 09:22:51,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 09:22:51,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 09:22:51,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 09:22:51,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 09:22:51,505 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 09:22:51,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 09:22:51,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 09:22:51,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 09:22:51,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 09:22:51,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:22:51,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 09:22:51,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 09:22:51,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 09:22:51,507 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 09:22:51,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 09:22:51,507 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 09:22:51,507 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 09:22:51,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 09:22:51,508 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0225ff20a5ba4b5245358ee525cfd28e9ed790cb06824ac87caa63c65a2c856 [2022-07-21 09:22:51,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 09:22:51,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 09:22:51,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 09:22:51,822 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 09:22:51,824 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 09:22:51,826 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_get_at_ptr_harness.i [2022-07-21 09:22:51,879 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcb601fe6/564be7379c244aa590bb5be7b31a2284/FLAG2786b930b [2022-07-21 09:22:52,674 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 09:22:52,675 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_get_at_ptr_harness.i [2022-07-21 09:22:52,710 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcb601fe6/564be7379c244aa590bb5be7b31a2284/FLAG2786b930b [2022-07-21 09:22:52,761 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcb601fe6/564be7379c244aa590bb5be7b31a2284 [2022-07-21 09:22:52,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 09:22:52,765 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 09:22:52,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 09:22:52,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 09:22:52,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 09:22:52,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:22:52" (1/1) ... [2022-07-21 09:22:52,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@618074bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:22:52, skipping insertion in model container [2022-07-21 09:22:52,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:22:52" (1/1) ... [2022-07-21 09:22:52,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 09:22:52,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 09:22:53,137 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_get_at_ptr_harness.i[4499,4512] [2022-07-21 09:22:53,144 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_get_at_ptr_harness.i[4559,4572] [2022-07-21 09:22:53,805 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:22:53,865 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:53,866 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:53,866 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:53,867 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:53,875 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:53,887 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:53,892 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:53,894 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:53,894 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:53,896 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:53,897 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:53,897 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:53,898 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:54,192 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:22:54,195 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:22:54,196 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:22:54,199 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:22:54,202 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:22:54,203 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:22:54,205 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:22:54,207 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:22:54,211 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:22:54,212 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:22:54,363 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:54,368 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:54,415 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:54,416 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:54,418 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:22:54,441 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 09:22:54,453 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_get_at_ptr_harness.i[4499,4512] [2022-07-21 09:22:54,454 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_get_at_ptr_harness.i[4559,4572] [2022-07-21 09:22:54,491 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:22:54,505 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:54,505 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:54,506 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:54,506 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:54,507 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:54,513 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:54,513 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:54,514 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:54,515 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:54,516 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:54,516 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:54,517 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:54,517 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:54,545 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:22:54,546 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:22:54,547 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:22:54,548 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:22:54,549 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:22:54,549 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:22:54,550 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:22:54,550 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:22:54,551 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:22:54,551 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:22:54,597 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:54,612 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:54,643 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:54,644 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:54,645 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:22:55,049 INFO L208 MainTranslator]: Completed translation [2022-07-21 09:22:55,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:22:55 WrapperNode [2022-07-21 09:22:55,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 09:22:55,051 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 09:22:55,056 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 09:22:55,056 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 09:22:55,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:22:55" (1/1) ... [2022-07-21 09:22:55,172 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:22:55" (1/1) ... [2022-07-21 09:22:55,247 INFO L137 Inliner]: procedures = 691, calls = 1679, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 607 [2022-07-21 09:22:55,247 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 09:22:55,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 09:22:55,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 09:22:55,249 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 09:22:55,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:22:55" (1/1) ... [2022-07-21 09:22:55,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:22:55" (1/1) ... [2022-07-21 09:22:55,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:22:55" (1/1) ... [2022-07-21 09:22:55,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:22:55" (1/1) ... [2022-07-21 09:22:55,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:22:55" (1/1) ... [2022-07-21 09:22:55,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:22:55" (1/1) ... [2022-07-21 09:22:55,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:22:55" (1/1) ... [2022-07-21 09:22:55,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 09:22:55,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 09:22:55,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 09:22:55,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 09:22:55,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:22:55" (1/1) ... [2022-07-21 09:22:55,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:22:55,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:22:55,372 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) [2022-07-21 09:22:55,398 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 [2022-07-21 09:22:55,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 09:22:55,415 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-07-21 09:22:55,416 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-07-21 09:22:55,416 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-21 09:22:55,416 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-21 09:22:55,416 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-21 09:22:55,416 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-21 09:22:55,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 09:22:55,417 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-21 09:22:55,417 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-21 09:22:55,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 09:22:55,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 09:22:55,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 09:22:55,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 09:22:55,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 09:22:55,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 09:22:55,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 09:22:55,419 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-21 09:22:55,419 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-21 09:22:55,420 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-21 09:22:55,420 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-21 09:22:55,420 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-21 09:22:55,420 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-21 09:22:55,420 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-07-21 09:22:55,420 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-07-21 09:22:55,420 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-07-21 09:22:55,421 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-07-21 09:22:55,421 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 09:22:55,421 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 09:22:55,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 09:22:55,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 09:22:55,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 09:22:55,422 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2022-07-21 09:22:55,422 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2022-07-21 09:22:55,422 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-21 09:22:55,422 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-21 09:22:55,422 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-21 09:22:55,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-21 09:22:55,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 09:22:55,423 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-07-21 09:22:55,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-07-21 09:22:55,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 09:22:55,717 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 09:22:55,720 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 09:22:56,569 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 09:22:56,577 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 09:22:56,578 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 09:22:56,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:22:56 BoogieIcfgContainer [2022-07-21 09:22:56,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 09:22:56,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 09:22:56,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 09:22:56,584 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 09:22:56,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:22:52" (1/3) ... [2022-07-21 09:22:56,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12509989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:22:56, skipping insertion in model container [2022-07-21 09:22:56,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:22:55" (2/3) ... [2022-07-21 09:22:56,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12509989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:22:56, skipping insertion in model container [2022-07-21 09:22:56,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:22:56" (3/3) ... [2022-07-21 09:22:56,587 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_get_at_ptr_harness.i [2022-07-21 09:22:56,600 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 09:22:56,601 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 09:22:56,659 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 09:22:56,674 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@2bfdacd4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5434b1cc [2022-07-21 09:22:56,674 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 09:22:56,679 INFO L276 IsEmpty]: Start isEmpty. Operand has 159 states, 95 states have (on average 1.2) internal successors, (114), 96 states have internal predecessors, (114), 47 states have call successors, (47), 15 states have call predecessors, (47), 15 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-07-21 09:22:56,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-21 09:22:56,702 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:22:56,703 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:22:56,703 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:22:56,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:22:56,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1219885948, now seen corresponding path program 1 times [2022-07-21 09:22:56,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:22:56,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850004808] [2022-07-21 09:22:56,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:22:56,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:22:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:57,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:22:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:57,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:22:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:57,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:22:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:57,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:22:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:57,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:22:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:57,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 09:22:57,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:57,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:22:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:57,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 09:22:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:57,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:22:57,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:57,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:22:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:57,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 09:22:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:57,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 09:22:57,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:57,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 09:22:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:57,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 09:22:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:57,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 09:22:57,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:57,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 09:22:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:57,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 09:22:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:57,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 09:22:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:57,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 09:22:57,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:57,530 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-07-21 09:22:57,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:22:57,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850004808] [2022-07-21 09:22:57,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850004808] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:22:57,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:22:57,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:22:57,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265139866] [2022-07-21 09:22:57,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:22:57,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:22:57,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:22:57,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:22:57,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:22:57,574 INFO L87 Difference]: Start difference. First operand has 159 states, 95 states have (on average 1.2) internal successors, (114), 96 states have internal predecessors, (114), 47 states have call successors, (47), 15 states have call predecessors, (47), 15 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 09:22:58,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:22:58,071 INFO L93 Difference]: Finished difference Result 342 states and 499 transitions. [2022-07-21 09:22:58,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:22:58,074 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 116 [2022-07-21 09:22:58,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:22:58,090 INFO L225 Difference]: With dead ends: 342 [2022-07-21 09:22:58,090 INFO L226 Difference]: Without dead ends: 181 [2022-07-21 09:22:58,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:22:58,105 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 150 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 09:22:58,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 262 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 09:22:58,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-07-21 09:22:58,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 150. [2022-07-21 09:22:58,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 88 states have (on average 1.1590909090909092) internal successors, (102), 89 states have internal predecessors, (102), 47 states have call successors, (47), 15 states have call predecessors, (47), 14 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-07-21 09:22:58,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 194 transitions. [2022-07-21 09:22:58,165 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 194 transitions. Word has length 116 [2022-07-21 09:22:58,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:22:58,166 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 194 transitions. [2022-07-21 09:22:58,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 09:22:58,166 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 194 transitions. [2022-07-21 09:22:58,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-21 09:22:58,170 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:22:58,170 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:22:58,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 09:22:58,171 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:22:58,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:22:58,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1423042578, now seen corresponding path program 1 times [2022-07-21 09:22:58,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:22:58,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027772329] [2022-07-21 09:22:58,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:22:58,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:22:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:58,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:22:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:58,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:22:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:58,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:22:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:58,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:22:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:58,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:22:58,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:58,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 09:22:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:58,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:22:58,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:58,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 09:22:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:58,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:22:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:58,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:22:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:58,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 09:22:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:58,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 09:22:58,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:58,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 09:22:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:58,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 09:22:58,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:58,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 09:22:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:58,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 09:22:58,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:58,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 09:22:58,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:58,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 09:22:58,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:58,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 09:22:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:58,618 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-07-21 09:22:58,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:22:58,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027772329] [2022-07-21 09:22:58,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027772329] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:22:58,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827450922] [2022-07-21 09:22:58,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:22:58,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:22:58,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:22:58,627 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) [2022-07-21 09:22:58,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 09:22:59,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:59,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 2239 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 09:22:59,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:22:59,193 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-21 09:22:59,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:22:59,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827450922] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:22:59,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:22:59,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-21 09:22:59,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142881797] [2022-07-21 09:22:59,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:22:59,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:22:59,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:22:59,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:22:59,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-21 09:22:59,197 INFO L87 Difference]: Start difference. First operand 150 states and 194 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-21 09:22:59,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:22:59,389 INFO L93 Difference]: Finished difference Result 273 states and 359 transitions. [2022-07-21 09:22:59,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:22:59,390 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 116 [2022-07-21 09:22:59,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:22:59,392 INFO L225 Difference]: With dead ends: 273 [2022-07-21 09:22:59,392 INFO L226 Difference]: Without dead ends: 152 [2022-07-21 09:22:59,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-07-21 09:22:59,394 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 199 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:22:59,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 562 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:22:59,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-07-21 09:22:59,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2022-07-21 09:22:59,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 89 states have (on average 1.1573033707865168) internal successors, (103), 91 states have internal predecessors, (103), 47 states have call successors, (47), 15 states have call predecessors, (47), 15 states have return successors, (50), 45 states have call predecessors, (50), 45 states have call successors, (50) [2022-07-21 09:22:59,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 200 transitions. [2022-07-21 09:22:59,413 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 200 transitions. Word has length 116 [2022-07-21 09:22:59,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:22:59,413 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 200 transitions. [2022-07-21 09:22:59,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-21 09:22:59,414 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 200 transitions. [2022-07-21 09:22:59,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-21 09:22:59,416 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:22:59,416 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:22:59,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 09:22:59,639 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 [2022-07-21 09:22:59,640 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:22:59,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:22:59,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1335874116, now seen corresponding path program 1 times [2022-07-21 09:22:59,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:22:59,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993889300] [2022-07-21 09:22:59,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:22:59,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:22:59,723 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:22:59,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644796529] [2022-07-21 09:22:59,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:22:59,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:22:59,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:22:59,726 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) [2022-07-21 09:22:59,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 09:23:00,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:23:00,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 2521 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 09:23:00,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:23:00,304 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-21 09:23:00,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:23:00,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:23:00,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993889300] [2022-07-21 09:23:00,305 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:23:00,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644796529] [2022-07-21 09:23:00,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644796529] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:23:00,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:23:00,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 09:23:00,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538085740] [2022-07-21 09:23:00,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:23:00,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:23:00,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:23:00,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:23:00,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:23:00,308 INFO L87 Difference]: Start difference. First operand 152 states and 200 transitions. Second operand has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-21 09:23:00,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:23:00,667 INFO L93 Difference]: Finished difference Result 243 states and 320 transitions. [2022-07-21 09:23:00,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:23:00,668 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 146 [2022-07-21 09:23:00,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:23:00,670 INFO L225 Difference]: With dead ends: 243 [2022-07-21 09:23:00,670 INFO L226 Difference]: Without dead ends: 152 [2022-07-21 09:23:00,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-07-21 09:23:00,672 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 199 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 09:23:00,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 784 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 09:23:00,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-07-21 09:23:00,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2022-07-21 09:23:00,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 89 states have (on average 1.1573033707865168) internal successors, (103), 91 states have internal predecessors, (103), 47 states have call successors, (47), 15 states have call predecessors, (47), 15 states have return successors, (47), 45 states have call predecessors, (47), 45 states have call successors, (47) [2022-07-21 09:23:00,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 197 transitions. [2022-07-21 09:23:00,693 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 197 transitions. Word has length 146 [2022-07-21 09:23:00,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:23:00,694 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 197 transitions. [2022-07-21 09:23:00,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-21 09:23:00,695 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 197 transitions. [2022-07-21 09:23:00,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-21 09:23:00,697 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:23:00,698 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:23:00,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 09:23:00,917 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 [2022-07-21 09:23:00,917 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:23:00,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:23:00,918 INFO L85 PathProgramCache]: Analyzing trace with hash 39623736, now seen corresponding path program 2 times [2022-07-21 09:23:00,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:23:00,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707769624] [2022-07-21 09:23:00,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:23:00,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:23:00,994 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:23:00,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [923326378] [2022-07-21 09:23:00,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:23:00,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:23:00,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:23:00,996 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) [2022-07-21 09:23:00,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 09:23:01,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:23:01,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:23:01,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 2662 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 09:23:01,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:23:01,592 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2022-07-21 09:23:01,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:23:01,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:23:01,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707769624] [2022-07-21 09:23:01,593 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:23:01,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923326378] [2022-07-21 09:23:01,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923326378] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:23:01,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:23:01,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:23:01,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227324086] [2022-07-21 09:23:01,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:23:01,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:23:01,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:23:01,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:23:01,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:23:01,596 INFO L87 Difference]: Start difference. First operand 152 states and 197 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 8 states have internal predecessors, (54), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-21 09:23:02,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:23:02,003 INFO L93 Difference]: Finished difference Result 234 states and 300 transitions. [2022-07-21 09:23:02,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 09:23:02,004 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 8 states have internal predecessors, (54), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) Word has length 161 [2022-07-21 09:23:02,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:23:02,006 INFO L225 Difference]: With dead ends: 234 [2022-07-21 09:23:02,006 INFO L226 Difference]: Without dead ends: 150 [2022-07-21 09:23:02,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-07-21 09:23:02,008 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 202 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 09:23:02,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 990 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 09:23:02,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-07-21 09:23:02,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2022-07-21 09:23:02,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 88 states have (on average 1.1477272727272727) internal successors, (101), 89 states have internal predecessors, (101), 47 states have call successors, (47), 15 states have call predecessors, (47), 14 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-07-21 09:23:02,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 193 transitions. [2022-07-21 09:23:02,024 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 193 transitions. Word has length 161 [2022-07-21 09:23:02,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:23:02,025 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 193 transitions. [2022-07-21 09:23:02,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 8 states have internal predecessors, (54), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-21 09:23:02,025 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 193 transitions. [2022-07-21 09:23:02,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-21 09:23:02,028 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:23:02,028 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:23:02,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 09:23:02,243 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 [2022-07-21 09:23:02,244 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:23:02,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:23:02,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1225339362, now seen corresponding path program 1 times [2022-07-21 09:23:02,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:23:02,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388853970] [2022-07-21 09:23:02,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:23:02,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:23:02,338 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:23:02,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1656149785] [2022-07-21 09:23:02,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:23:02,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:23:02,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:23:02,342 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) [2022-07-21 09:23:02,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 09:23:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:23:02,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 2944 conjuncts, 40 conjunts are in the unsatisfiable core [2022-07-21 09:23:02,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:23:02,995 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-07-21 09:23:02,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:23:02,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:23:02,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388853970] [2022-07-21 09:23:02,996 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:23:02,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656149785] [2022-07-21 09:23:02,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656149785] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:23:02,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:23:02,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 09:23:02,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456612362] [2022-07-21 09:23:02,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:23:02,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:23:02,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:23:02,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:23:02,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:23:02,999 INFO L87 Difference]: Start difference. First operand 150 states and 193 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-21 09:23:03,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:23:03,145 INFO L93 Difference]: Finished difference Result 255 states and 329 transitions. [2022-07-21 09:23:03,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:23:03,146 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) Word has length 191 [2022-07-21 09:23:03,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:23:03,149 INFO L225 Difference]: With dead ends: 255 [2022-07-21 09:23:03,150 INFO L226 Difference]: Without dead ends: 150 [2022-07-21 09:23:03,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 09:23:03,153 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 5 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:23:03,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1223 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:23:03,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-07-21 09:23:03,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2022-07-21 09:23:03,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 88 states have (on average 1.1363636363636365) internal successors, (100), 89 states have internal predecessors, (100), 47 states have call successors, (47), 15 states have call predecessors, (47), 14 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-07-21 09:23:03,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 192 transitions. [2022-07-21 09:23:03,189 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 192 transitions. Word has length 191 [2022-07-21 09:23:03,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:23:03,190 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 192 transitions. [2022-07-21 09:23:03,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-21 09:23:03,190 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 192 transitions. [2022-07-21 09:23:03,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-21 09:23:03,194 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:23:03,195 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:23:03,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 09:23:03,411 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 [2022-07-21 09:23:03,411 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:23:03,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:23:03,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1128384140, now seen corresponding path program 1 times [2022-07-21 09:23:03,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:23:03,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364334969] [2022-07-21 09:23:03,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:23:03,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:23:03,504 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:23:03,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [899501599] [2022-07-21 09:23:03,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:23:03,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:23:03,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:23:03,507 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) [2022-07-21 09:23:03,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 09:23:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:23:05,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 2979 conjuncts, 329 conjunts are in the unsatisfiable core [2022-07-21 09:23:05,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:23:05,445 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 [2022-07-21 09:23:05,561 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 5 treesize of output 3 [2022-07-21 09:23:05,591 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 5 treesize of output 3 [2022-07-21 09:23:05,763 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 [2022-07-21 09:23:05,891 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-21 09:23:05,891 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 [2022-07-21 09:23:05,948 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 5 treesize of output 3 [2022-07-21 09:23:06,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:23:06,027 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 12 treesize of output 14 [2022-07-21 09:23:06,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:23:06,139 INFO L356 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-07-21 09:23:06,140 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 34 treesize of output 53 [2022-07-21 09:23:06,399 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v___CPROVER_overflow_mult_~#c~1.base_34| Int) (v_ArrVal_578 Int)) (and (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_34|) 0) (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_34| v_ArrVal_578)))) (exists ((v_ArrVal_587 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_587) |c_#memory_int|))) is different from true [2022-07-21 09:23:06,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:23:06,801 INFO L356 Elim1Store]: treesize reduction 129, result has 28.7 percent of original size [2022-07-21 09:23:06,802 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 51 treesize of output 85 [2022-07-21 09:23:06,815 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 [2022-07-21 09:23:08,784 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_590 Int)) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_590)) |c_#memory_int|)) is different from true [2022-07-21 09:23:22,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:23:22,874 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-21 09:23:22,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:23:22,898 INFO L356 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-07-21 09:23:22,898 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2022-07-21 09:24:41,503 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 09:24:41,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:24:41,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:24:41,509 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 [2022-07-21 09:25:30,914 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 82 proven. 225 refuted. 4 times theorem prover too weak. 38 trivial. 21 not checked. [2022-07-21 09:25:30,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:25:42,539 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_length_~list.base))) (* (select .cse1 (+ c_aws_array_list_length_~list.offset 16)) (select .cse1 (+ c_aws_array_list_length_~list.offset 24)))))) (<= (mod .cse0 18446744073709551616) (mod (select (select (store |c_#memory_int| |v_aws_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_length_~list.base) (+ c_aws_array_list_length_~list.offset 8)) 18446744073709551616)))) (forall ((|v_aws_array_list_is_valid_~#required_size~0.base_14| Int)) (let ((.cse4 (+ c_aws_array_list_length_~list.offset 24))) (let ((.cse2 (let ((.cse5 (select |c_#memory_int| c_aws_array_list_length_~list.base))) (* (select .cse5 (+ c_aws_array_list_length_~list.offset 16)) (select .cse5 .cse4))))) (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_length_~list.base))) (or (not (<= (mod .cse2 18446744073709551616) (mod (select .cse3 (+ c_aws_array_list_length_~list.offset 8)) 18446744073709551616))) (not (= (mod (select .cse3 .cse4) 18446744073709551616) 0)))))))) is different from false [2022-07-21 09:25:42,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:25:42,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364334969] [2022-07-21 09:25:42,564 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:25:42,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899501599] [2022-07-21 09:25:42,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899501599] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:25:42,564 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:25:42,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2022-07-21 09:25:42,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838902819] [2022-07-21 09:25:42,565 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-21 09:25:42,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-07-21 09:25:42,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:25:42,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-07-21 09:25:42,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=3892, Unknown=72, NotChecked=384, Total=4556 [2022-07-21 09:25:42,570 INFO L87 Difference]: Start difference. First operand 150 states and 192 transitions. Second operand has 64 states, 54 states have (on average 2.185185185185185) internal successors, (118), 51 states have internal predecessors, (118), 19 states have call successors, (31), 12 states have call predecessors, (31), 20 states have return successors, (29), 19 states have call predecessors, (29), 18 states have call successors, (29) [2022-07-21 09:26:43,576 WARN L233 SmtUtils]: Spent 11.77s on a formula simplification. DAG size of input: 92 DAG size of output: 79 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-21 09:27:08,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:27:08,360 INFO L93 Difference]: Finished difference Result 232 states and 307 transitions. [2022-07-21 09:27:08,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-07-21 09:27:08,361 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 54 states have (on average 2.185185185185185) internal successors, (118), 51 states have internal predecessors, (118), 19 states have call successors, (31), 12 states have call predecessors, (31), 20 states have return successors, (29), 19 states have call predecessors, (29), 18 states have call successors, (29) Word has length 202 [2022-07-21 09:27:08,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:27:08,369 INFO L225 Difference]: With dead ends: 232 [2022-07-21 09:27:08,369 INFO L226 Difference]: Without dead ends: 230 [2022-07-21 09:27:08,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 132 SyntacticMatches, 12 SemanticMatches, 96 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 2615 ImplicationChecksByTransitivity, 222.7s TimeCoverageRelationStatistics Valid=431, Invalid=8400, Unknown=111, NotChecked=564, Total=9506 [2022-07-21 09:27:08,376 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 118 mSDsluCounter, 2695 mSDsCounter, 0 mSdLazyCounter, 1783 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 2876 SdHoareTripleChecker+Invalid, 5358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3452 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:27:08,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 2876 Invalid, 5358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1783 Invalid, 0 Unknown, 3452 Unchecked, 1.6s Time] [2022-07-21 09:27:08,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-07-21 09:27:08,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 224. [2022-07-21 09:27:08,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 134 states have (on average 1.1343283582089552) internal successors, (152), 138 states have internal predecessors, (152), 65 states have call successors, (65), 24 states have call predecessors, (65), 24 states have return successors, (79), 61 states have call predecessors, (79), 63 states have call successors, (79) [2022-07-21 09:27:08,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 296 transitions. [2022-07-21 09:27:08,413 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 296 transitions. Word has length 202 [2022-07-21 09:27:08,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:27:08,415 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 296 transitions. [2022-07-21 09:27:08,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 54 states have (on average 2.185185185185185) internal successors, (118), 51 states have internal predecessors, (118), 19 states have call successors, (31), 12 states have call predecessors, (31), 20 states have return successors, (29), 19 states have call predecessors, (29), 18 states have call successors, (29) [2022-07-21 09:27:08,415 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 296 transitions. [2022-07-21 09:27:08,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-07-21 09:27:08,419 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:27:08,420 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:27:08,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 09:27:08,635 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 [2022-07-21 09:27:08,636 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:27:08,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:27:08,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1495668825, now seen corresponding path program 1 times [2022-07-21 09:27:08,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:27:08,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277555133] [2022-07-21 09:27:08,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:08,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:27:08,744 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:27:08,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1014749795] [2022-07-21 09:27:08,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:08,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:27:08,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:27:08,747 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) [2022-07-21 09:27:08,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 09:27:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:09,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 2991 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-21 09:27:09,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:27:09,342 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-07-21 09:27:09,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:27:09,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:27:09,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277555133] [2022-07-21 09:27:09,343 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:27:09,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014749795] [2022-07-21 09:27:09,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014749795] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:27:09,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:27:09,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 09:27:09,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165289968] [2022-07-21 09:27:09,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:27:09,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 09:27:09,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:27:09,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 09:27:09,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-21 09:27:09,345 INFO L87 Difference]: Start difference. First operand 224 states and 296 transitions. Second operand has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 9 states have internal predecessors, (91), 3 states have call successors, (30), 2 states have call predecessors, (30), 6 states have return successors, (28), 5 states have call predecessors, (28), 3 states have call successors, (28) [2022-07-21 09:27:09,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:27:09,557 INFO L93 Difference]: Finished difference Result 330 states and 448 transitions. [2022-07-21 09:27:09,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 09:27:09,558 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 9 states have internal predecessors, (91), 3 states have call successors, (30), 2 states have call predecessors, (30), 6 states have return successors, (28), 5 states have call predecessors, (28), 3 states have call successors, (28) Word has length 220 [2022-07-21 09:27:09,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:27:09,561 INFO L225 Difference]: With dead ends: 330 [2022-07-21 09:27:09,561 INFO L226 Difference]: Without dead ends: 231 [2022-07-21 09:27:09,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-07-21 09:27:09,563 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 11 mSDsluCounter, 1885 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2081 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:27:09,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2081 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 09:27:09,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-07-21 09:27:09,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2022-07-21 09:27:09,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 140 states have (on average 1.1428571428571428) internal successors, (160), 145 states have internal predecessors, (160), 65 states have call successors, (65), 24 states have call predecessors, (65), 25 states have return successors, (90), 61 states have call predecessors, (90), 63 states have call successors, (90) [2022-07-21 09:27:09,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 315 transitions. [2022-07-21 09:27:09,580 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 315 transitions. Word has length 220 [2022-07-21 09:27:09,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:27:09,581 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 315 transitions. [2022-07-21 09:27:09,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 9 states have internal predecessors, (91), 3 states have call successors, (30), 2 states have call predecessors, (30), 6 states have return successors, (28), 5 states have call predecessors, (28), 3 states have call successors, (28) [2022-07-21 09:27:09,581 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 315 transitions. [2022-07-21 09:27:09,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-21 09:27:09,584 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:27:09,584 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:27:09,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-21 09:27:09,799 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 [2022-07-21 09:27:09,799 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:27:09,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:27:09,800 INFO L85 PathProgramCache]: Analyzing trace with hash 734017354, now seen corresponding path program 1 times [2022-07-21 09:27:09,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:27:09,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257070001] [2022-07-21 09:27:09,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:09,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:27:09,896 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:27:09,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1056907232] [2022-07-21 09:27:09,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:09,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:27:09,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:27:09,898 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) [2022-07-21 09:27:09,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 09:27:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:10,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 2974 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 09:27:10,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:27:10,395 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-07-21 09:27:10,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:27:10,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:27:10,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257070001] [2022-07-21 09:27:10,395 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:27:10,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056907232] [2022-07-21 09:27:10,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056907232] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:27:10,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:27:10,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 09:27:10,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631359868] [2022-07-21 09:27:10,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:27:10,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:27:10,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:27:10,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:27:10,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:27:10,399 INFO L87 Difference]: Start difference. First operand 231 states and 315 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-21 09:27:10,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:27:10,436 INFO L93 Difference]: Finished difference Result 377 states and 540 transitions. [2022-07-21 09:27:10,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:27:10,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 202 [2022-07-21 09:27:10,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:27:10,440 INFO L225 Difference]: With dead ends: 377 [2022-07-21 09:27:10,440 INFO L226 Difference]: Without dead ends: 239 [2022-07-21 09:27:10,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:27:10,442 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 7 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:27:10,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 568 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:27:10,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-07-21 09:27:10,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 233. [2022-07-21 09:27:10,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 142 states have (on average 1.1338028169014085) internal successors, (161), 147 states have internal predecessors, (161), 65 states have call successors, (65), 24 states have call predecessors, (65), 25 states have return successors, (90), 61 states have call predecessors, (90), 63 states have call successors, (90) [2022-07-21 09:27:10,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 316 transitions. [2022-07-21 09:27:10,468 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 316 transitions. Word has length 202 [2022-07-21 09:27:10,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:27:10,469 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 316 transitions. [2022-07-21 09:27:10,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-21 09:27:10,470 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 316 transitions. [2022-07-21 09:27:10,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-07-21 09:27:10,472 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:27:10,472 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:27:10,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 09:27:10,691 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 [2022-07-21 09:27:10,691 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:27:10,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:27:10,692 INFO L85 PathProgramCache]: Analyzing trace with hash 501615718, now seen corresponding path program 1 times [2022-07-21 09:27:10,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:27:10,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478114681] [2022-07-21 09:27:10,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:10,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:27:10,758 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:27:10,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1959018657] [2022-07-21 09:27:10,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:10,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:27:10,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:27:10,760 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) [2022-07-21 09:27:10,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 09:27:11,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:11,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 2984 conjuncts, 154 conjunts are in the unsatisfiable core [2022-07-21 09:27:11,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:27:11,786 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_1041 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1041))) (exists ((v_ArrVal_1042 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1042))))) is different from true [2022-07-21 09:27:12,066 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:27:12,067 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-07-21 09:27:12,081 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:27:12,082 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-07-21 09:27:12,092 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-21 09:27:12,095 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-21 09:27:12,357 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_1043 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1043))) (exists ((v_ArrVal_1044 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1044))))) is different from true [2022-07-21 09:27:12,619 INFO L356 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-07-21 09:27:12,619 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 14 treesize of output 14 [2022-07-21 09:27:12,625 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11