./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 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_pop_back_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4e3d62ab3962e5958dc41169c7885079de47f5dcf75079068205793f151a2e2b --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 09:24:16,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 09:24:16,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 09:24:16,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 09:24:16,215 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 09:24:16,216 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 09:24:16,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 09:24:16,222 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 09:24:16,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 09:24:16,230 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 09:24:16,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 09:24:16,234 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 09:24:16,235 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 09:24:16,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 09:24:16,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 09:24:16,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 09:24:16,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 09:24:16,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 09:24:16,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 09:24:16,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 09:24:16,254 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 09:24:16,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 09:24:16,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 09:24:16,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 09:24:16,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 09:24:16,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 09:24:16,267 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 09:24:16,267 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 09:24:16,268 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 09:24:16,268 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 09:24:16,269 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 09:24:16,269 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 09:24:16,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 09:24:16,276 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 09:24:16,277 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 09:24:16,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 09:24:16,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 09:24:16,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 09:24:16,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 09:24:16,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 09:24:16,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 09:24:16,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 09:24:16,287 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 09:24:16,314 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 09:24:16,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 09:24:16,315 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 09:24:16,316 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 09:24:16,316 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 09:24:16,317 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 09:24:16,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 09:24:16,318 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 09:24:16,318 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 09:24:16,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 09:24:16,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 09:24:16,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 09:24:16,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 09:24:16,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 09:24:16,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 09:24:16,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 09:24:16,320 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 09:24:16,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 09:24:16,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 09:24:16,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 09:24:16,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 09:24:16,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:24:16,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 09:24:16,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 09:24:16,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 09:24:16,322 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 09:24:16,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 09:24:16,323 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 09:24:16,323 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 09:24:16,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 09:24:16,324 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e3d62ab3962e5958dc41169c7885079de47f5dcf75079068205793f151a2e2b [2022-07-21 09:24:16,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 09:24:16,651 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 09:24:16,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 09:24:16,655 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 09:24:16,655 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 09:24:16,657 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i [2022-07-21 09:24:16,709 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd62b6628/f8ab9e09731b4bf9aec2213efae18e75/FLAG901f3f913 [2022-07-21 09:24:17,386 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 09:24:17,387 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i [2022-07-21 09:24:17,421 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd62b6628/f8ab9e09731b4bf9aec2213efae18e75/FLAG901f3f913 [2022-07-21 09:24:17,529 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd62b6628/f8ab9e09731b4bf9aec2213efae18e75 [2022-07-21 09:24:17,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 09:24:17,534 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 09:24:17,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 09:24:17,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 09:24:17,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 09:24:17,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:24:17" (1/1) ... [2022-07-21 09:24:17,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e612821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:24:17, skipping insertion in model container [2022-07-21 09:24:17,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:24:17" (1/1) ... [2022-07-21 09:24:17,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 09:24:17,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 09:24:17,820 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i[4497,4510] [2022-07-21 09:24:17,826 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i[4557,4570] [2022-07-21 09:24:18,620 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:24:18,703 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:18,704 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:18,705 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:18,705 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:18,708 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:18,717 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:18,718 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:18,719 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:18,720 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:18,721 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:18,722 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:18,723 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:18,723 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:18,982 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:24:18,983 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:24:18,984 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:24:18,986 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:24:18,987 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:24:18,988 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:24:18,988 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:24:18,989 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:24:18,989 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:24:18,989 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:24:19,100 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:19,104 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:19,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:24:19,167 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 09:24:19,177 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i[4497,4510] [2022-07-21 09:24:19,177 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i[4557,4570] [2022-07-21 09:24:19,215 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:24:19,232 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:19,233 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:19,233 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:19,233 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:19,234 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:19,242 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:19,242 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:19,243 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:19,243 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:19,244 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:19,244 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:19,245 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:19,245 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:19,294 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:24:19,295 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:24:19,297 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:24:19,297 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:24:19,298 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:24:19,298 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:24:19,298 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:24:19,299 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:24:19,300 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:24:19,300 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:24:19,344 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:19,348 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:19,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:24:19,667 INFO L208 MainTranslator]: Completed translation [2022-07-21 09:24:19,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:24:19 WrapperNode [2022-07-21 09:24:19,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 09:24:19,669 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 09:24:19,669 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 09:24:19,669 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 09:24:19,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:24:19" (1/1) ... [2022-07-21 09:24:19,766 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:24:19" (1/1) ... [2022-07-21 09:24:19,817 INFO L137 Inliner]: procedures = 691, calls = 1700, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 616 [2022-07-21 09:24:19,818 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 09:24:19,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 09:24:19,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 09:24:19,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 09:24:19,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:24:19" (1/1) ... [2022-07-21 09:24:19,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:24:19" (1/1) ... [2022-07-21 09:24:19,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:24:19" (1/1) ... [2022-07-21 09:24:19,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:24:19" (1/1) ... [2022-07-21 09:24:19,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:24:19" (1/1) ... [2022-07-21 09:24:19,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:24:19" (1/1) ... [2022-07-21 09:24:19,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:24:19" (1/1) ... [2022-07-21 09:24:19,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 09:24:19,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 09:24:19,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 09:24:19,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 09:24:19,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:24:19" (1/1) ... [2022-07-21 09:24:19,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:24:19,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:24:19,992 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 09:24:20,006 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 09:24:20,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 09:24:20,034 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-07-21 09:24:20,034 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-07-21 09:24:20,035 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-21 09:24:20,035 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-21 09:24:20,036 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-21 09:24:20,036 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-21 09:24:20,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 09:24:20,036 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-21 09:24:20,036 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-21 09:24:20,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 09:24:20,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 09:24:20,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 09:24:20,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 09:24:20,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 09:24:20,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 09:24:20,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 09:24:20,038 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-21 09:24:20,038 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-21 09:24:20,038 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-21 09:24:20,038 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-21 09:24:20,039 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-21 09:24:20,039 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-21 09:24:20,039 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-07-21 09:24:20,039 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-07-21 09:24:20,040 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 09:24:20,040 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 09:24:20,040 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2022-07-21 09:24:20,040 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2022-07-21 09:24:20,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 09:24:20,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 09:24:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 09:24:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-21 09:24:20,041 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-21 09:24:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-21 09:24:20,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-21 09:24:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 09:24:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2022-07-21 09:24:20,042 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2022-07-21 09:24:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2022-07-21 09:24:20,042 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2022-07-21 09:24:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-07-21 09:24:20,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-07-21 09:24:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 09:24:20,341 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 09:24:20,342 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 09:24:21,059 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 09:24:21,067 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 09:24:21,068 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 09:24:21,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:24:21 BoogieIcfgContainer [2022-07-21 09:24:21,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 09:24:21,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 09:24:21,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 09:24:21,075 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 09:24:21,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:24:17" (1/3) ... [2022-07-21 09:24:21,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3009695f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:24:21, skipping insertion in model container [2022-07-21 09:24:21,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:24:19" (2/3) ... [2022-07-21 09:24:21,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3009695f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:24:21, skipping insertion in model container [2022-07-21 09:24:21,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:24:21" (3/3) ... [2022-07-21 09:24:21,078 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_pop_back_harness.i [2022-07-21 09:24:21,090 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 09:24:21,090 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 09:24:21,160 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 09:24:21,171 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@57ec47eb, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@45002bea [2022-07-21 09:24:21,172 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 09:24:21,180 INFO L276 IsEmpty]: Start isEmpty. Operand has 169 states, 103 states have (on average 1.203883495145631) internal successors, (124), 104 states have internal predecessors, (124), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-07-21 09:24:21,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-21 09:24:21,194 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:24:21,195 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:24:21,196 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:24:21,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:24:21,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1276829709, now seen corresponding path program 1 times [2022-07-21 09:24:21,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:24:21,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885452226] [2022-07-21 09:24:21,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:24:21,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:24:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:21,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:24:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:21,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:24:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:21,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:24:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:21,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:24:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:21,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:24:21,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:21,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 09:24:21,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:21,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:24:21,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:21,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 09:24:21,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:21,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:24:21,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:21,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 09:24:21,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:21,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 09:24:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:21,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 09:24:21,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:21,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 09:24:21,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:21,918 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-21 09:24:21,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:24:21,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885452226] [2022-07-21 09:24:21,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885452226] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:24:21,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:24:21,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 09:24:21,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779741168] [2022-07-21 09:24:21,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:24:21,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:24:21,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:24:21,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:24:21,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:24:21,958 INFO L87 Difference]: Start difference. First operand has 169 states, 103 states have (on average 1.203883495145631) internal successors, (124), 104 states have internal predecessors, (124), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 09:24:22,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:24:22,480 INFO L93 Difference]: Finished difference Result 364 states and 532 transitions. [2022-07-21 09:24:22,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 09:24:22,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 84 [2022-07-21 09:24:22,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:24:22,492 INFO L225 Difference]: With dead ends: 364 [2022-07-21 09:24:22,492 INFO L226 Difference]: Without dead ends: 197 [2022-07-21 09:24:22,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:24:22,499 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 111 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 09:24:22,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 243 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 09:24:22,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-07-21 09:24:22,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 164. [2022-07-21 09:24:22,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 99 states have (on average 1.1818181818181819) internal successors, (117), 100 states have internal predecessors, (117), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-07-21 09:24:22,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 212 transitions. [2022-07-21 09:24:22,548 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 212 transitions. Word has length 84 [2022-07-21 09:24:22,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:24:22,548 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 212 transitions. [2022-07-21 09:24:22,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 09:24:22,549 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 212 transitions. [2022-07-21 09:24:22,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-21 09:24:22,552 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:24:22,552 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:24:22,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 09:24:22,553 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:24:22,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:24:22,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1354789231, now seen corresponding path program 1 times [2022-07-21 09:24:22,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:24:22,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198026] [2022-07-21 09:24:22,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:24:22,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:24:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:22,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:24:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:22,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:24:22,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:22,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:24:22,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:22,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:24:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:22,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:24:22,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:22,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 09:24:22,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:22,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:24:22,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:22,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 09:24:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:22,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:24:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:22,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 09:24:22,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:22,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 09:24:22,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:22,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 09:24:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:22,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 09:24:22,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:22,866 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-21 09:24:22,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:24:22,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198026] [2022-07-21 09:24:22,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198026] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:24:22,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961295959] [2022-07-21 09:24:22,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:24:22,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:24:22,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:24:22,871 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 09:24:22,897 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 09:24:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:23,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 2131 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 09:24:23,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:24:23,413 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-21 09:24:23,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:24:23,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961295959] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:24:23,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:24:23,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-07-21 09:24:23,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844343586] [2022-07-21 09:24:23,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:24:23,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:24:23,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:24:23,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:24:23,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:24:23,421 INFO L87 Difference]: Start difference. First operand 164 states and 212 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 09:24:23,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:24:23,633 INFO L93 Difference]: Finished difference Result 293 states and 387 transitions. [2022-07-21 09:24:23,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:24:23,635 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 84 [2022-07-21 09:24:23,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:24:23,639 INFO L225 Difference]: With dead ends: 293 [2022-07-21 09:24:23,639 INFO L226 Difference]: Without dead ends: 166 [2022-07-21 09:24:23,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-07-21 09:24:23,641 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 223 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:24:23,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 628 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:24:23,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-07-21 09:24:23,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2022-07-21 09:24:23,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 100 states have (on average 1.18) internal successors, (118), 102 states have internal predecessors, (118), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (52), 47 states have call predecessors, (52), 47 states have call successors, (52) [2022-07-21 09:24:23,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 218 transitions. [2022-07-21 09:24:23,657 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 218 transitions. Word has length 84 [2022-07-21 09:24:23,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:24:23,658 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 218 transitions. [2022-07-21 09:24:23,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 09:24:23,658 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 218 transitions. [2022-07-21 09:24:23,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-21 09:24:23,661 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:24:23,661 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:24:23,691 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 09:24:23,882 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 09:24:23,883 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:24:23,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:24:23,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1275658481, now seen corresponding path program 1 times [2022-07-21 09:24:23,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:24:23,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163651353] [2022-07-21 09:24:23,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:24:23,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:24:23,993 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:24:24,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [37954960] [2022-07-21 09:24:24,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:24:24,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:24:24,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:24:24,008 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 09:24:24,038 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 09:24:24,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:24,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 2272 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 09:24:24,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:24:24,481 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-21 09:24:24,481 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:24:24,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:24:24,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163651353] [2022-07-21 09:24:24,482 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:24:24,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37954960] [2022-07-21 09:24:24,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37954960] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:24:24,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:24:24,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 09:24:24,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993396628] [2022-07-21 09:24:24,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:24:24,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:24:24,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:24:24,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:24:24,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:24:24,488 INFO L87 Difference]: Start difference. First operand 166 states and 218 transitions. Second operand has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-21 09:24:24,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:24:24,883 INFO L93 Difference]: Finished difference Result 285 states and 376 transitions. [2022-07-21 09:24:24,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:24:24,884 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 99 [2022-07-21 09:24:24,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:24:24,885 INFO L225 Difference]: With dead ends: 285 [2022-07-21 09:24:24,885 INFO L226 Difference]: Without dead ends: 166 [2022-07-21 09:24:24,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-07-21 09:24:24,887 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 229 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 09:24:24,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 849 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 09:24:24,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-07-21 09:24:24,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2022-07-21 09:24:24,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 100 states have (on average 1.18) internal successors, (118), 102 states have internal predecessors, (118), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2022-07-21 09:24:24,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 215 transitions. [2022-07-21 09:24:24,902 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 215 transitions. Word has length 99 [2022-07-21 09:24:24,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:24:24,902 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 215 transitions. [2022-07-21 09:24:24,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-21 09:24:24,903 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 215 transitions. [2022-07-21 09:24:24,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-21 09:24:24,904 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:24:24,904 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:24:24,935 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 09:24:25,123 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 09:24:25,124 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:24:25,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:24:25,124 INFO L85 PathProgramCache]: Analyzing trace with hash -170213077, now seen corresponding path program 2 times [2022-07-21 09:24:25,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:24:25,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135354110] [2022-07-21 09:24:25,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:24:25,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:24:25,180 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:24:25,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [733118505] [2022-07-21 09:24:25,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:24:25,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:24:25,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:24:25,182 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 09:24:25,183 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 09:24:25,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:24:25,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:24:25,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 2413 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 09:24:25,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:24:25,792 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-21 09:24:25,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:24:25,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:24:25,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135354110] [2022-07-21 09:24:25,792 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:24:25,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733118505] [2022-07-21 09:24:25,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733118505] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:24:25,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:24:25,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:24:25,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158993512] [2022-07-21 09:24:25,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:24:25,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:24:25,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:24:25,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:24:25,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:24:25,796 INFO L87 Difference]: Start difference. First operand 166 states and 215 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-21 09:24:26,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:24:26,245 INFO L93 Difference]: Finished difference Result 282 states and 368 transitions. [2022-07-21 09:24:26,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 09:24:26,247 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 114 [2022-07-21 09:24:26,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:24:26,249 INFO L225 Difference]: With dead ends: 282 [2022-07-21 09:24:26,249 INFO L226 Difference]: Without dead ends: 164 [2022-07-21 09:24:26,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-07-21 09:24:26,251 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 231 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 09:24:26,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 1077 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 09:24:26,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-07-21 09:24:26,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2022-07-21 09:24:26,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 99 states have (on average 1.1717171717171717) internal successors, (116), 100 states have internal predecessors, (116), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-07-21 09:24:26,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 211 transitions. [2022-07-21 09:24:26,266 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 211 transitions. Word has length 114 [2022-07-21 09:24:26,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:24:26,266 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 211 transitions. [2022-07-21 09:24:26,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-21 09:24:26,267 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 211 transitions. [2022-07-21 09:24:26,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-21 09:24:26,268 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:24:26,269 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:24:26,294 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 09:24:26,487 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 09:24:26,488 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:24:26,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:24:26,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1405660739, now seen corresponding path program 1 times [2022-07-21 09:24:26,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:24:26,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657047987] [2022-07-21 09:24:26,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:24:26,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:24:26,552 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:24:26,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2070478179] [2022-07-21 09:24:26,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:24:26,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:24:26,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:24:26,554 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 09:24:26,581 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 09:24:27,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:27,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 277 conjunts are in the unsatisfiable core [2022-07-21 09:24:27,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:24:27,180 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 09:24:27,486 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 09:24:27,647 INFO L356 Elim1Store]: treesize reduction 53, result has 32.9 percent of original size [2022-07-21 09:24:27,648 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 53 [2022-07-21 09:24:27,718 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-21 09:24:27,718 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-07-21 09:24:28,263 INFO L356 Elim1Store]: treesize reduction 91, result has 30.0 percent of original size [2022-07-21 09:24:28,263 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 46 treesize of output 69 [2022-07-21 09:24:28,274 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:24:38,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:24:38,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:24:38,538 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 28 [2022-07-21 09:24:38,568 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-07-21 09:24:38,568 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-07-21 09:25:05,605 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 50 proven. 102 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-21 09:25:05,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:25:17,190 WARN L233 SmtUtils]: Spent 8.48s on a formula simplification that was a NOOP. DAG size: 75 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-21 09:25:27,893 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|v_aws_array_list_is_valid_~#required_size~0.base_15| Int)) (let ((.cse1 (+ c_aws_array_list_length_~list.offset 24))) (let ((.cse2 (let ((.cse3 (select |c_#memory_int| c_aws_array_list_length_~list.base))) (* (select .cse3 (+ c_aws_array_list_length_~list.offset 16)) (select .cse3 .cse1))))) (let ((.cse0 (select (store |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_15| (store (select |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_15|) 0 .cse2)) c_aws_array_list_length_~list.base))) (or (not (= (mod (select .cse0 .cse1) 18446744073709551616) 0)) (not (<= (mod .cse2 18446744073709551616) (mod (select .cse0 (+ c_aws_array_list_length_~list.offset 8)) 18446744073709551616)))))))) (forall ((|v_aws_array_list_is_valid_~#required_size~0.base_15| Int)) (let ((.cse4 (let ((.cse5 (select |c_#memory_int| c_aws_array_list_length_~list.base))) (* (select .cse5 (+ c_aws_array_list_length_~list.offset 16)) (select .cse5 (+ c_aws_array_list_length_~list.offset 24)))))) (<= (mod .cse4 18446744073709551616) (mod (select (select (store |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_15| (store (select |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_15|) 0 .cse4)) c_aws_array_list_length_~list.base) (+ c_aws_array_list_length_~list.offset 8)) 18446744073709551616))))) is different from false [2022-07-21 09:25:27,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:25:27,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657047987] [2022-07-21 09:25:27,896 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:25:27,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070478179] [2022-07-21 09:25:27,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070478179] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:25:27,897 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:25:27,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2022-07-21 09:25:27,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794625284] [2022-07-21 09:25:27,897 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-21 09:25:27,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-07-21 09:25:27,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:25:27,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-07-21 09:25:27,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=2568, Unknown=23, NotChecked=102, Total=2862 [2022-07-21 09:25:27,899 INFO L87 Difference]: Start difference. First operand 164 states and 211 transitions. Second operand has 50 states, 42 states have (on average 2.0476190476190474) internal successors, (86), 39 states have internal predecessors, (86), 15 states have call successors, (22), 10 states have call predecessors, (22), 14 states have return successors, (19), 13 states have call predecessors, (19), 13 states have call successors, (19) [2022-07-21 09:25:40,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:25:40,631 INFO L93 Difference]: Finished difference Result 258 states and 332 transitions. [2022-07-21 09:25:40,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-07-21 09:25:40,632 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 42 states have (on average 2.0476190476190474) internal successors, (86), 39 states have internal predecessors, (86), 15 states have call successors, (22), 10 states have call predecessors, (22), 14 states have return successors, (19), 13 states have call predecessors, (19), 13 states have call successors, (19) Word has length 144 [2022-07-21 09:25:40,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:25:40,636 INFO L225 Difference]: With dead ends: 258 [2022-07-21 09:25:40,636 INFO L226 Difference]: Without dead ends: 256 [2022-07-21 09:25:40,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 87 SyntacticMatches, 11 SemanticMatches, 76 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1786 ImplicationChecksByTransitivity, 35.4s TimeCoverageRelationStatistics Valid=364, Invalid=5452, Unknown=40, NotChecked=150, Total=6006 [2022-07-21 09:25:40,639 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 132 mSDsluCounter, 2022 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 2221 SdHoareTripleChecker+Invalid, 3594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2291 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:25:40,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 2221 Invalid, 3594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1194 Invalid, 0 Unknown, 2291 Unchecked, 1.0s Time] [2022-07-21 09:25:40,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-07-21 09:25:40,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 243. [2022-07-21 09:25:40,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 151 states have (on average 1.1655629139072847) internal successors, (176), 154 states have internal predecessors, (176), 64 states have call successors, (64), 27 states have call predecessors, (64), 27 states have return successors, (75), 61 states have call predecessors, (75), 63 states have call successors, (75) [2022-07-21 09:25:40,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 315 transitions. [2022-07-21 09:25:40,674 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 315 transitions. Word has length 144 [2022-07-21 09:25:40,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:25:40,674 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 315 transitions. [2022-07-21 09:25:40,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 42 states have (on average 2.0476190476190474) internal successors, (86), 39 states have internal predecessors, (86), 15 states have call successors, (22), 10 states have call predecessors, (22), 14 states have return successors, (19), 13 states have call predecessors, (19), 13 states have call successors, (19) [2022-07-21 09:25:40,675 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 315 transitions. [2022-07-21 09:25:40,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-21 09:25:40,684 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:25:40,684 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:25:40,717 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 09:25:40,899 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 09:25:40,899 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:25:40,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:25:40,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1456570214, now seen corresponding path program 1 times [2022-07-21 09:25:40,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:25:40,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68768632] [2022-07-21 09:25:40,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:25:40,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:25:40,981 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:25:40,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2057375079] [2022-07-21 09:25:40,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:25:40,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:25:40,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:25:40,985 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 09:25:40,986 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 09:25:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:25:41,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 2699 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-21 09:25:41,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:25:41,572 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-21 09:25:41,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:25:41,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:25:41,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68768632] [2022-07-21 09:25:41,573 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:25:41,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057375079] [2022-07-21 09:25:41,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057375079] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:25:41,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:25:41,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 09:25:41,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433272316] [2022-07-21 09:25:41,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:25:41,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 09:25:41,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:25:41,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 09:25:41,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-07-21 09:25:41,575 INFO L87 Difference]: Start difference. First operand 243 states and 315 transitions. Second operand has 13 states, 11 states have (on average 6.545454545454546) internal successors, (72), 10 states have internal predecessors, (72), 4 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-21 09:25:41,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:25:41,815 INFO L93 Difference]: Finished difference Result 394 states and 525 transitions. [2022-07-21 09:25:41,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 09:25:41,816 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.545454545454546) internal successors, (72), 10 states have internal predecessors, (72), 4 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 150 [2022-07-21 09:25:41,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:25:41,818 INFO L225 Difference]: With dead ends: 394 [2022-07-21 09:25:41,818 INFO L226 Difference]: Without dead ends: 258 [2022-07-21 09:25:41,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-07-21 09:25:41,819 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 12 mSDsluCounter, 2301 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2518 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:25:41,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2518 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 09:25:41,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-07-21 09:25:41,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 255. [2022-07-21 09:25:41,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 161 states have (on average 1.173913043478261) internal successors, (189), 165 states have internal predecessors, (189), 64 states have call successors, (64), 27 states have call predecessors, (64), 29 states have return successors, (85), 62 states have call predecessors, (85), 63 states have call successors, (85) [2022-07-21 09:25:41,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 338 transitions. [2022-07-21 09:25:41,836 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 338 transitions. Word has length 150 [2022-07-21 09:25:41,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:25:41,837 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 338 transitions. [2022-07-21 09:25:41,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.545454545454546) internal successors, (72), 10 states have internal predecessors, (72), 4 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-21 09:25:41,837 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 338 transitions. [2022-07-21 09:25:41,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-21 09:25:41,839 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:25:41,839 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:25:41,863 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 09:25:42,051 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 09:25:42,052 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:25:42,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:25:42,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1582164159, now seen corresponding path program 1 times [2022-07-21 09:25:42,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:25:42,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745361942] [2022-07-21 09:25:42,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:25:42,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:25:42,114 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:25:42,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1412631076] [2022-07-21 09:25:42,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:25:42,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:25:42,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:25:42,117 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 09:25:42,118 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 09:25:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:25:42,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 2690 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 09:25:42,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:25:42,576 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-21 09:25:42,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:25:42,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:25:42,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745361942] [2022-07-21 09:25:42,577 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:25:42,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412631076] [2022-07-21 09:25:42,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412631076] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:25:42,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:25:42,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 09:25:42,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157399410] [2022-07-21 09:25:42,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:25:42,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:25:42,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:25:42,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:25:42,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:25:42,579 INFO L87 Difference]: Start difference. First operand 255 states and 338 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 09:25:42,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:25:42,626 INFO L93 Difference]: Finished difference Result 425 states and 591 transitions. [2022-07-21 09:25:42,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:25:42,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 144 [2022-07-21 09:25:42,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:25:42,630 INFO L225 Difference]: With dead ends: 425 [2022-07-21 09:25:42,630 INFO L226 Difference]: Without dead ends: 265 [2022-07-21 09:25:42,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 141 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 09:25:42,635 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 7 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:25:42,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 625 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:25:42,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-07-21 09:25:42,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 259. [2022-07-21 09:25:42,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 165 states have (on average 1.1696969696969697) internal successors, (193), 169 states have internal predecessors, (193), 64 states have call successors, (64), 27 states have call predecessors, (64), 29 states have return successors, (85), 62 states have call predecessors, (85), 63 states have call successors, (85) [2022-07-21 09:25:42,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 342 transitions. [2022-07-21 09:25:42,662 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 342 transitions. Word has length 144 [2022-07-21 09:25:42,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:25:42,662 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 342 transitions. [2022-07-21 09:25:42,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 09:25:42,662 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 342 transitions. [2022-07-21 09:25:42,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-21 09:25:42,665 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:25:42,665 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:25:42,687 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 09:25:42,871 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 09:25:42,872 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:25:42,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:25:42,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1295460992, now seen corresponding path program 2 times [2022-07-21 09:25:42,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:25:42,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747190439] [2022-07-21 09:25:42,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:25:42,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:25:42,928 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:25:42,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [382725978] [2022-07-21 09:25:42,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:25:42,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:25:42,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:25:42,930 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 09:25:42,932 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 09:25:43,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:25:43,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:25:43,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 2699 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-21 09:25:43,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:25:44,032 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-21 09:25:44,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:25:44,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:25:44,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747190439] [2022-07-21 09:25:44,032 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:25:44,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382725978] [2022-07-21 09:25:44,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382725978] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:25:44,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:25:44,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 09:25:44,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505989691] [2022-07-21 09:25:44,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:25:44,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 09:25:44,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:25:44,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 09:25:44,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-21 09:25:44,034 INFO L87 Difference]: Start difference. First operand 259 states and 342 transitions. Second operand has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 9 states have internal predecessors, (75), 3 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (19), 5 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-21 09:25:44,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:25:44,230 INFO L93 Difference]: Finished difference Result 413 states and 545 transitions. [2022-07-21 09:25:44,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 09:25:44,231 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 9 states have internal predecessors, (75), 3 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (19), 5 states have call predecessors, (19), 3 states have call successors, (19) Word has length 150 [2022-07-21 09:25:44,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:25:44,233 INFO L225 Difference]: With dead ends: 413 [2022-07-21 09:25:44,233 INFO L226 Difference]: Without dead ends: 259 [2022-07-21 09:25:44,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 139 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 09:25:44,234 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 11 mSDsluCounter, 2073 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2287 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:25:44,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2287 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:25:44,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-07-21 09:25:44,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2022-07-21 09:25:44,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 165 states have (on average 1.1696969696969697) internal successors, (193), 169 states have internal predecessors, (193), 64 states have call successors, (64), 27 states have call predecessors, (64), 29 states have return successors, (83), 62 states have call predecessors, (83), 63 states have call successors, (83) [2022-07-21 09:25:44,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 340 transitions. [2022-07-21 09:25:44,265 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 340 transitions. Word has length 150 [2022-07-21 09:25:44,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:25:44,266 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 340 transitions. [2022-07-21 09:25:44,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 9 states have internal predecessors, (75), 3 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (19), 5 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-21 09:25:44,266 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 340 transitions. [2022-07-21 09:25:44,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-21 09:25:44,273 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:25:44,273 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:25:44,308 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 09:25:44,499 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 09:25:44,500 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:25:44,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:25:44,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1304087383, now seen corresponding path program 1 times [2022-07-21 09:25:44,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:25:44,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127889638] [2022-07-21 09:25:44,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:25:44,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:25:44,553 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:25:44,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [182772175] [2022-07-21 09:25:44,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:25:44,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:25:44,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:25:44,555 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 09:25:44,556 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 09:25:44,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:25:44,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 2700 conjuncts, 102 conjunts are in the unsatisfiable core [2022-07-21 09:25:44,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:25:45,161 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_856 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_856) |c_#memory_$Pointer$.offset|)) is different from true [2022-07-21 09:25:45,390 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:25:45,391 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 09:25:45,397 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 09:25:47,784 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_860 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_859 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_859))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_860))))) is different from true [2022-07-21 09:26:34,347 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 148 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 3 not checked. [2022-07-21 09:26:34,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:26:36,572 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_874 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_19| Int)) (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_19| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_19|) 0 v_ArrVal_874)) c_aws_array_list_length_~list.base) (+ 32 c_aws_array_list_length_~list.offset)) 0)) (forall ((v_ArrVal_873 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_19| Int)) (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_19| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_19|) 0 v_ArrVal_873)) c_aws_array_list_length_~list.base) (+ 32 c_aws_array_list_length_~list.offset)) 0))) is different from false [2022-07-21 09:26:36,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:26:36,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127889638] [2022-07-21 09:26:36,574 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:26:36,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182772175] [2022-07-21 09:26:36,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182772175] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:26:36,574 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:26:36,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2022-07-21 09:26:36,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974307454] [2022-07-21 09:26:36,575 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-21 09:26:36,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-21 09:26:36,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:26:36,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-21 09:26:36,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=681, Unknown=42, NotChecked=168, Total=992 [2022-07-21 09:26:36,576 INFO L87 Difference]: Start difference. First operand 259 states and 340 transitions. Second operand has 31 states, 29 states have (on average 3.1379310344827585) internal successors, (91), 28 states have internal predecessors, (91), 12 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (21), 11 states have call predecessors, (21), 12 states have call successors, (21) [2022-07-21 09:26:36,748 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_860 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_859 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_859))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_860))))) (exists ((v_ArrVal_856 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_856) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-21 09:26:57,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:26:57,528 INFO L93 Difference]: Finished difference Result 508 states and 702 transitions. [2022-07-21 09:26:57,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-21 09:26:57,529 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 3.1379310344827585) internal successors, (91), 28 states have internal predecessors, (91), 12 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (21), 11 states have call predecessors, (21), 12 states have call successors, (21) Word has length 146 [2022-07-21 09:26:57,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:26:57,531 INFO L225 Difference]: With dead ends: 508 [2022-07-21 09:26:57,531 INFO L226 Difference]: Without dead ends: 349 [2022-07-21 09:26:57,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 146 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 70.9s TimeCoverageRelationStatistics Valid=200, Invalid=1311, Unknown=65, NotChecked=316, Total=1892 [2022-07-21 09:26:57,533 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 219 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 2927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1570 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 09:26:57,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 1727 Invalid, 2927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1207 Invalid, 0 Unknown, 1570 Unchecked, 0.9s Time] [2022-07-21 09:26:57,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-07-21 09:26:57,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 303. [2022-07-21 09:26:57,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 194 states have (on average 1.1597938144329898) internal successors, (225), 201 states have internal predecessors, (225), 73 states have call successors, (73), 34 states have call predecessors, (73), 35 states have return successors, (114), 67 states have call predecessors, (114), 72 states have call successors, (114) [2022-07-21 09:26:57,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 412 transitions. [2022-07-21 09:26:57,554 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 412 transitions. Word has length 146 [2022-07-21 09:26:57,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:26:57,555 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 412 transitions. [2022-07-21 09:26:57,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 3.1379310344827585) internal successors, (91), 28 states have internal predecessors, (91), 12 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (21), 11 states have call predecessors, (21), 12 states have call successors, (21) [2022-07-21 09:26:57,555 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 412 transitions. [2022-07-21 09:26:57,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-21 09:26:57,557 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:26:57,557 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:26:57,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-21 09:26:57,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-21 09:26:57,764 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:26:57,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:26:57,764 INFO L85 PathProgramCache]: Analyzing trace with hash -533278666, now seen corresponding path program 1 times [2022-07-21 09:26:57,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:26:57,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022675159] [2022-07-21 09:26:57,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:26:57,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:26:57,826 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:26:57,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1956425507] [2022-07-21 09:26:57,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:26:57,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:26:57,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:26:57,828 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:26:57,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 09:26:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:26:58,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 2709 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 09:26:58,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:26:58,296 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-21 09:26:58,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:26:58,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:26:58,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022675159] [2022-07-21 09:26:58,296 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:26:58,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956425507] [2022-07-21 09:26:58,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956425507] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:26:58,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:26:58,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:26:58,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139534872] [2022-07-21 09:26:58,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:26:58,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:26:58,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:26:58,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:26:58,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:26:58,299 INFO L87 Difference]: Start difference. First operand 303 states and 412 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 09:26:58,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:26:58,527 INFO L93 Difference]: Finished difference Result 487 states and 693 transitions. [2022-07-21 09:26:58,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:26:58,528 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 152 [2022-07-21 09:26:58,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:26:58,530 INFO L225 Difference]: With dead ends: 487 [2022-07-21 09:26:58,530 INFO L226 Difference]: Without dead ends: 312 [2022-07-21 09:26:58,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:26:58,531 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 16 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:26:58,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 743 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 09:26:58,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-07-21 09:26:58,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 304. [2022-07-21 09:26:58,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 195 states have (on average 1.1538461538461537) internal successors, (225), 202 states have internal predecessors, (225), 73 states have call successors, (73), 34 states have call predecessors, (73), 35 states have return successors, (114), 67 states have call predecessors, (114), 72 states have call successors, (114) [2022-07-21 09:26:58,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 412 transitions. [2022-07-21 09:26:58,556 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 412 transitions. Word has length 152 [2022-07-21 09:26:58,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:26:58,556 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 412 transitions. [2022-07-21 09:26:58,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 09:26:58,557 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 412 transitions. [2022-07-21 09:26:58,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-21 09:26:58,558 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:26:58,559 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:26:58,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-21 09:26:58,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-21 09:26:58,775 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:26:58,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:26:58,776 INFO L85 PathProgramCache]: Analyzing trace with hash 274728085, now seen corresponding path program 1 times [2022-07-21 09:26:58,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:26:58,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398010316] [2022-07-21 09:26:58,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:26:58,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:26:58,829 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:26:58,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1924972558] [2022-07-21 09:26:58,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:26:58,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:26:58,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:26:58,831 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:26:58,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-21 09:26:59,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:26:59,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 09:26:59,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:26:59,302 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-21 09:26:59,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:26:59,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:26:59,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398010316] [2022-07-21 09:26:59,303 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:26:59,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924972558] [2022-07-21 09:26:59,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924972558] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:26:59,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:26:59,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:26:59,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70344941] [2022-07-21 09:26:59,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:26:59,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:26:59,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:26:59,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:26:59,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:26:59,304 INFO L87 Difference]: Start difference. First operand 304 states and 412 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 09:26:59,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:26:59,504 INFO L93 Difference]: Finished difference Result 484 states and 687 transitions. [2022-07-21 09:26:59,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:26:59,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 146 [2022-07-21 09:26:59,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:26:59,506 INFO L225 Difference]: With dead ends: 484 [2022-07-21 09:26:59,507 INFO L226 Difference]: Without dead ends: 308 [2022-07-21 09:26:59,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:26:59,508 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 7 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:26:59,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 783 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:26:59,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-07-21 09:26:59,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 304. [2022-07-21 09:26:59,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 195 states have (on average 1.1435897435897435) internal successors, (223), 202 states have internal predecessors, (223), 73 states have call successors, (73), 34 states have call predecessors, (73), 35 states have return successors, (114), 67 states have call predecessors, (114), 72 states have call successors, (114) [2022-07-21 09:26:59,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 410 transitions. [2022-07-21 09:26:59,527 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 410 transitions. Word has length 146 [2022-07-21 09:26:59,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:26:59,527 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 410 transitions. [2022-07-21 09:26:59,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 09:26:59,527 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 410 transitions. [2022-07-21 09:26:59,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-21 09:26:59,529 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:26:59,529 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:26:59,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-21 09:26:59,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-21 09:26:59,743 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:26:59,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:26:59,744 INFO L85 PathProgramCache]: Analyzing trace with hash 2018141987, now seen corresponding path program 2 times [2022-07-21 09:26:59,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:26:59,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288492781] [2022-07-21 09:26:59,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:26:59,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:26:59,805 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:26:59,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1527126688] [2022-07-21 09:26:59,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:26:59,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:26:59,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:26:59,807 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:26:59,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-21 09:27:00,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:27:00,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:27:00,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 2700 conjuncts, 84 conjunts are in the unsatisfiable core [2022-07-21 09:27:00,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:27:00,901 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 09:27:05,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:27:05,525 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-21 09:27:05,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:27:05,532 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-21 09:27:06,707 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1266 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1266) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1267 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1267) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-21 09:27:06,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:27:06,979 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-07-21 09:27:06,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:27:06,984 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-07-21 09:27:06,987 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-21 09:27:06,991 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 89 proven. 4 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-21 09:27:06,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:27:07,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:27:07,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288492781] [2022-07-21 09:27:07,279 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:27:07,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527126688] [2022-07-21 09:27:07,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527126688] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:27:07,279 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:27:07,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-07-21 09:27:07,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610343376] [2022-07-21 09:27:07,280 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-21 09:27:07,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-21 09:27:07,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:27:07,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-21 09:27:07,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=192, Unknown=12, NotChecked=28, Total=272 [2022-07-21 09:27:07,281 INFO L87 Difference]: Start difference. First operand 304 states and 410 transitions. Second operand has 16 states, 15 states have (on average 4.266666666666667) internal successors, (64), 14 states have internal predecessors, (64), 5 states have call successors, (20), 5 states have call predecessors, (20), 6 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-07-21 09:27:09,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:27:09,916 INFO L93 Difference]: Finished difference Result 487 states and 654 transitions. [2022-07-21 09:27:09,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 09:27:09,916 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.266666666666667) internal successors, (64), 14 states have internal predecessors, (64), 5 states have call successors, (20), 5 states have call predecessors, (20), 6 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 146 [2022-07-21 09:27:09,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:27:09,919 INFO L225 Difference]: With dead ends: 487 [2022-07-21 09:27:09,919 INFO L226 Difference]: Without dead ends: 311 [2022-07-21 09:27:09,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 223 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=50, Invalid=246, Unknown=14, NotChecked=32, Total=342 [2022-07-21 09:27:09,920 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 117 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 1901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1254 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 09:27:09,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 730 Invalid, 1901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 527 Invalid, 0 Unknown, 1254 Unchecked, 0.5s Time] [2022-07-21 09:27:09,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-07-21 09:27:09,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 304. [2022-07-21 09:27:09,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 195 states have (on average 1.1435897435897435) internal successors, (223), 202 states have internal predecessors, (223), 73 states have call successors, (73), 34 states have call predecessors, (73), 35 states have return successors, (113), 67 states have call predecessors, (113), 72 states have call successors, (113) [2022-07-21 09:27:09,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 409 transitions. [2022-07-21 09:27:09,938 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 409 transitions. Word has length 146 [2022-07-21 09:27:09,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:27:09,938 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 409 transitions. [2022-07-21 09:27:09,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.266666666666667) internal successors, (64), 14 states have internal predecessors, (64), 5 states have call successors, (20), 5 states have call predecessors, (20), 6 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-07-21 09:27:09,939 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 409 transitions. [2022-07-21 09:27:09,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-21 09:27:09,941 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:27:09,941 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:27:09,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-21 09:27:10,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-21 09:27:10,168 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:27:10,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:27:10,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1347632212, now seen corresponding path program 1 times [2022-07-21 09:27:10,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:27:10,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54407616] [2022-07-21 09:27:10,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:10,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:27:10,254 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:27:10,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1254446246] [2022-07-21 09:27:10,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:10,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:27:10,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:27:10,256 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:27:10,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-21 09:27:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:10,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 2739 conjuncts, 126 conjunts are in the unsatisfiable core [2022-07-21 09:27:10,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:27:10,776 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 13 treesize of output 9 [2022-07-21 09:27:10,842 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-21 09:27:10,842 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 21 treesize of output 20 [2022-07-21 09:27:12,951 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1438 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1438)))) is different from true [2022-07-21 09:27:26,734 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-07-21 09:27:38,147 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1441 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1441)) |c_#memory_$Pointer$.base|)) is different from true [2022-07-21 09:27:40,154 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1441 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_1441)) |c_#memory_$Pointer$.base|)) is different from true [2022-07-21 09:27:40,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2022-07-21 09:28:03,296 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1443 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1443)))) is different from true [2022-07-21 09:28:34,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:28:34,618 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 09:28:34,619 INFO L356 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-07-21 09:28:34,619 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 1 [2022-07-21 09:28:34,621 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 103 proven. 17 refuted. 2 times theorem prover too weak. 29 trivial. 23 not checked. [2022-07-21 09:28:34,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:28:36,777 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1450 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_53| Int)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_53| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_53|) 0 v_ArrVal_1450)) c_aws_array_list_length_~list.base) (+ 32 c_aws_array_list_length_~list.offset)) 0))) is different from false [2022-07-21 09:28:36,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:28:36,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54407616] [2022-07-21 09:28:36,778 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:28:36,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254446246] [2022-07-21 09:28:36,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254446246] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:28:36,778 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:28:36,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2022-07-21 09:28:36,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512800931] [2022-07-21 09:28:36,778 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-21 09:28:36,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-21 09:28:36,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:28:36,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-21 09:28:36,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=949, Unknown=29, NotChecked=330, Total=1406 [2022-07-21 09:28:36,780 INFO L87 Difference]: Start difference. First operand 304 states and 409 transitions. Second operand has 37 states, 33 states have (on average 2.757575757575758) internal successors, (91), 32 states have internal predecessors, (91), 14 states have call successors, (24), 8 states have call predecessors, (24), 12 states have return successors, (21), 14 states have call predecessors, (21), 14 states have call successors, (21) [2022-07-21 09:28:47,498 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1441 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1441)) |c_#memory_$Pointer$.base|)) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1438 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1438)))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1443 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1443))))) is different from true