./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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_hash_iter_begin_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 0f893dc40cf70b8d30dda6e110329e0bc2218e18bc668acf080889b069fe51ab --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 22:08:29,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 22:08:29,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 22:08:29,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 22:08:29,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 22:08:29,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 22:08:29,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 22:08:29,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 22:08:29,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 22:08:29,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 22:08:29,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 22:08:29,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 22:08:29,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 22:08:29,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 22:08:29,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 22:08:29,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 22:08:29,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 22:08:29,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 22:08:29,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 22:08:29,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 22:08:29,703 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 22:08:29,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 22:08:29,705 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 22:08:29,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 22:08:29,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 22:08:29,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 22:08:29,712 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 22:08:29,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 22:08:29,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 22:08:29,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 22:08:29,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 22:08:29,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 22:08:29,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 22:08:29,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 22:08:29,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 22:08:29,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 22:08:29,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 22:08:29,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 22:08:29,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 22:08:29,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 22:08:29,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 22:08:29,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 22:08:29,724 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 22:08:29,745 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 22:08:29,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 22:08:29,746 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 22:08:29,746 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 22:08:29,747 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 22:08:29,747 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 22:08:29,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 22:08:29,747 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 22:08:29,748 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 22:08:29,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 22:08:29,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 22:08:29,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 22:08:29,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 22:08:29,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 22:08:29,749 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 22:08:29,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 22:08:29,749 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 22:08:29,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 22:08:29,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 22:08:29,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 22:08:29,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 22:08:29,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 22:08:29,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 22:08:29,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 22:08:29,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 22:08:29,752 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 22:08:29,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 22:08:29,752 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 22:08:29,752 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 22:08:29,752 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 22:08:29,752 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f893dc40cf70b8d30dda6e110329e0bc2218e18bc668acf080889b069fe51ab [2022-07-19 22:08:29,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 22:08:29,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 22:08:29,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 22:08:29,973 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 22:08:29,974 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 22:08:29,975 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i [2022-07-19 22:08:30,046 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a69db882/fe3cbe4f6024449294217662b66786b2/FLAG0503dc414 [2022-07-19 22:08:30,647 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 22:08:30,647 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i [2022-07-19 22:08:30,675 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a69db882/fe3cbe4f6024449294217662b66786b2/FLAG0503dc414 [2022-07-19 22:08:31,060 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a69db882/fe3cbe4f6024449294217662b66786b2 [2022-07-19 22:08:31,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 22:08:31,064 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 22:08:31,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 22:08:31,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 22:08:31,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 22:08:31,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:08:31" (1/1) ... [2022-07-19 22:08:31,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@95027fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:08:31, skipping insertion in model container [2022-07-19 22:08:31,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:08:31" (1/1) ... [2022-07-19 22:08:31,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 22:08:31,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 22:08:31,354 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_hash_iter_begin_harness.i[4493,4506] [2022-07-19 22:08:31,360 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_hash_iter_begin_harness.i[4553,4566] [2022-07-19 22:08:31,979 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:31,980 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:31,980 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:31,981 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:31,981 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:31,989 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:31,990 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:31,992 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:31,993 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:31,995 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:31,997 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:31,997 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:31,997 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,218 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 22:08:32,220 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 22:08:32,221 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 22:08:32,221 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 22:08:32,222 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 22:08:32,223 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 22:08:32,223 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 22:08:32,224 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 22:08:32,224 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 22:08:32,225 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 22:08:32,364 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 22:08:32,600 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,601 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,615 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,616 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,621 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,621 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,633 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,634 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,635 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,635 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,636 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,636 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,636 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 22:08:32,693 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 22:08:32,709 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_hash_iter_begin_harness.i[4493,4506] [2022-07-19 22:08:32,710 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_hash_iter_begin_harness.i[4553,4566] [2022-07-19 22:08:32,740 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,740 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,740 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,740 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,741 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,745 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,746 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,748 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,748 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,749 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,749 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,749 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,749 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,800 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 22:08:32,801 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 22:08:32,801 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 22:08:32,802 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 22:08:32,802 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 22:08:32,803 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 22:08:32,803 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 22:08:32,803 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 22:08:32,821 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 22:08:32,835 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 22:08:32,854 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 22:08:32,916 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,916 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,920 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,921 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,923 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,923 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,932 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,933 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,933 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,934 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,934 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,934 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,935 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:08:32,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 22:08:33,138 INFO L208 MainTranslator]: Completed translation [2022-07-19 22:08:33,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:08:33 WrapperNode [2022-07-19 22:08:33,138 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 22:08:33,139 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 22:08:33,139 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 22:08:33,139 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 22:08:33,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:08:33" (1/1) ... [2022-07-19 22:08:33,213 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:08:33" (1/1) ... [2022-07-19 22:08:33,285 INFO L137 Inliner]: procedures = 774, calls = 2446, calls flagged for inlining = 67, calls inlined = 11, statements flattened = 624 [2022-07-19 22:08:33,286 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 22:08:33,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 22:08:33,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 22:08:33,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 22:08:33,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:08:33" (1/1) ... [2022-07-19 22:08:33,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:08:33" (1/1) ... [2022-07-19 22:08:33,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:08:33" (1/1) ... [2022-07-19 22:08:33,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:08:33" (1/1) ... [2022-07-19 22:08:33,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:08:33" (1/1) ... [2022-07-19 22:08:33,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:08:33" (1/1) ... [2022-07-19 22:08:33,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:08:33" (1/1) ... [2022-07-19 22:08:33,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 22:08:33,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 22:08:33,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 22:08:33,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 22:08:33,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:08:33" (1/1) ... [2022-07-19 22:08:33,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 22:08:33,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:08:33,396 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) [2022-07-19 22:08:33,399 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 [2022-07-19 22:08:33,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-07-19 22:08:33,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 22:08:33,444 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-19 22:08:33,445 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-19 22:08:33,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 22:08:33,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 22:08:33,445 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2022-07-19 22:08:33,445 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2022-07-19 22:08:33,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 22:08:33,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 22:08:33,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 22:08:33,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 22:08:33,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 22:08:33,446 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-19 22:08:33,446 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-19 22:08:33,446 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-19 22:08:33,446 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-19 22:08:33,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-19 22:08:33,446 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-19 22:08:33,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 22:08:33,447 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-07-19 22:08:33,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-07-19 22:08:33,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 22:08:33,447 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-19 22:08:33,447 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-19 22:08:33,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 22:08:33,448 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2022-07-19 22:08:33,448 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2022-07-19 22:08:33,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 22:08:33,448 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_begin [2022-07-19 22:08:33,448 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_begin [2022-07-19 22:08:33,448 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2022-07-19 22:08:33,448 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2022-07-19 22:08:33,448 INFO L130 BoogieDeclarations]: Found specification of procedure s_get_next_element [2022-07-19 22:08:33,448 INFO L138 BoogieDeclarations]: Found implementation of procedure s_get_next_element [2022-07-19 22:08:33,449 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 22:08:33,449 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 22:08:33,449 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_is_valid [2022-07-19 22:08:33,449 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_is_valid [2022-07-19 22:08:33,449 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2022-07-19 22:08:33,449 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2022-07-19 22:08:33,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 22:08:33,450 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-19 22:08:33,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-19 22:08:33,452 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-07-19 22:08:33,452 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-07-19 22:08:33,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 22:08:33,747 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 22:08:33,754 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 22:08:33,878 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !true; [2022-07-19 22:08:34,411 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 22:08:34,416 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 22:08:34,416 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-19 22:08:34,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:08:34 BoogieIcfgContainer [2022-07-19 22:08:34,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 22:08:34,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 22:08:34,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 22:08:34,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 22:08:34,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 10:08:31" (1/3) ... [2022-07-19 22:08:34,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21fb6489 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:08:34, skipping insertion in model container [2022-07-19 22:08:34,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:08:33" (2/3) ... [2022-07-19 22:08:34,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21fb6489 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:08:34, skipping insertion in model container [2022-07-19 22:08:34,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:08:34" (3/3) ... [2022-07-19 22:08:34,424 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_iter_begin_harness.i [2022-07-19 22:08:34,434 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 22:08:34,434 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 22:08:34,468 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 22:08:34,472 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@30f39a26, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4d951769 [2022-07-19 22:08:34,473 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 22:08:34,476 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 114 states have (on average 1.2456140350877194) internal successors, (142), 113 states have internal predecessors, (142), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-07-19 22:08:34,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-19 22:08:34,486 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:08:34,487 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:08:34,488 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:08:34,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:08:34,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1612502020, now seen corresponding path program 1 times [2022-07-19 22:08:34,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:08:34,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326226354] [2022-07-19 22:08:34,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:34,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:08:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:34,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:08:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:34,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:08:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:34,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:08:34,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:34,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 22:08:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:34,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:08:35,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:08:35,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326226354] [2022-07-19 22:08:35,006 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-07-19 22:08:35,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609514963] [2022-07-19 22:08:35,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:35,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:08:35,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:08:35,008 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) [2022-07-19 22:08:35,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 22:08:35,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:35,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 2556 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-19 22:08:35,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:08:35,502 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-07-19 22:08:35,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:08:35,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609514963] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:08:35,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:08:35,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 22:08:35,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119094363] [2022-07-19 22:08:35,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:08:35,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 22:08:35,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:08:35,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 22:08:35,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 22:08:35,539 INFO L87 Difference]: Start difference. First operand has 171 states, 114 states have (on average 1.2456140350877194) internal successors, (142), 113 states have internal predecessors, (142), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-19 22:08:35,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:08:35,565 INFO L93 Difference]: Finished difference Result 333 states and 453 transitions. [2022-07-19 22:08:35,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 22:08:35,567 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 148 [2022-07-19 22:08:35,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:08:35,573 INFO L225 Difference]: With dead ends: 333 [2022-07-19 22:08:35,574 INFO L226 Difference]: Without dead ends: 164 [2022-07-19 22:08:35,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 22:08:35,598 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:08:35,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:08:35,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-07-19 22:08:35,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2022-07-19 22:08:35,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 106 states have (on average 1.2264150943396226) internal successors, (130), 107 states have internal predecessors, (130), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-07-19 22:08:35,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 209 transitions. [2022-07-19 22:08:35,632 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 209 transitions. Word has length 148 [2022-07-19 22:08:35,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:08:35,632 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 209 transitions. [2022-07-19 22:08:35,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-19 22:08:35,633 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 209 transitions. [2022-07-19 22:08:35,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-19 22:08:35,643 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:08:35,644 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:08:35,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 22:08:35,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-19 22:08:35,849 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:08:35,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:08:35,849 INFO L85 PathProgramCache]: Analyzing trace with hash 818348810, now seen corresponding path program 1 times [2022-07-19 22:08:35,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:08:35,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372227527] [2022-07-19 22:08:35,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:35,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:08:35,910 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:08:35,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1322809960] [2022-07-19 22:08:35,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:35,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:08:35,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:08:35,912 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) [2022-07-19 22:08:35,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 22:08:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:36,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 2584 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 22:08:36,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:08:36,531 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-07-19 22:08:36,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:08:36,738 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-19 22:08:36,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:08:36,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372227527] [2022-07-19 22:08:36,739 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:08:36,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322809960] [2022-07-19 22:08:36,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322809960] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-19 22:08:36,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:08:36,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2022-07-19 22:08:36,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346601998] [2022-07-19 22:08:36,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:08:36,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 22:08:36,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:08:36,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 22:08:36,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-07-19 22:08:36,742 INFO L87 Difference]: Start difference. First operand 164 states and 209 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-19 22:08:36,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:08:36,981 INFO L93 Difference]: Finished difference Result 230 states and 298 transitions. [2022-07-19 22:08:36,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 22:08:36,982 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) Word has length 154 [2022-07-19 22:08:36,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:08:36,985 INFO L225 Difference]: With dead ends: 230 [2022-07-19 22:08:36,985 INFO L226 Difference]: Without dead ends: 166 [2022-07-19 22:08:36,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-07-19 22:08:36,986 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 212 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 22:08:36,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 810 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 22:08:36,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-07-19 22:08:37,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2022-07-19 22:08:37,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 107 states have (on average 1.2242990654205608) internal successors, (131), 109 states have internal predecessors, (131), 40 states have call successors, (40), 17 states have call predecessors, (40), 18 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-07-19 22:08:37,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 211 transitions. [2022-07-19 22:08:37,008 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 211 transitions. Word has length 154 [2022-07-19 22:08:37,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:08:37,012 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 211 transitions. [2022-07-19 22:08:37,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-19 22:08:37,012 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 211 transitions. [2022-07-19 22:08:37,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-19 22:08:37,017 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:08:37,018 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:08:37,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 22:08:37,223 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,SelfDestructingSolverStorable1 [2022-07-19 22:08:37,224 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:08:37,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:08:37,224 INFO L85 PathProgramCache]: Analyzing trace with hash -226987588, now seen corresponding path program 1 times [2022-07-19 22:08:37,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:08:37,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458197078] [2022-07-19 22:08:37,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:37,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:08:37,275 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:08:37,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [301470644] [2022-07-19 22:08:37,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:37,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:08:37,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:08:37,277 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) [2022-07-19 22:08:37,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 22:08:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:37,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 2589 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 22:08:37,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:08:37,760 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-07-19 22:08:37,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:08:37,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:08:37,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458197078] [2022-07-19 22:08:37,760 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:08:37,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301470644] [2022-07-19 22:08:37,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301470644] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:08:37,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:08:37,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 22:08:37,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387542744] [2022-07-19 22:08:37,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:08:37,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 22:08:37,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:08:37,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 22:08:37,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 22:08:37,763 INFO L87 Difference]: Start difference. First operand 166 states and 211 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-19 22:08:37,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:08:37,785 INFO L93 Difference]: Finished difference Result 325 states and 414 transitions. [2022-07-19 22:08:37,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 22:08:37,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 155 [2022-07-19 22:08:37,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:08:37,787 INFO L225 Difference]: With dead ends: 325 [2022-07-19 22:08:37,787 INFO L226 Difference]: Without dead ends: 171 [2022-07-19 22:08:37,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 22:08:37,789 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 2 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:08:37,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 819 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:08:37,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-07-19 22:08:37,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2022-07-19 22:08:37,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 111 states have (on average 1.2162162162162162) internal successors, (135), 113 states have internal predecessors, (135), 40 states have call successors, (40), 17 states have call predecessors, (40), 19 states have return successors, (41), 40 states have call predecessors, (41), 39 states have call successors, (41) [2022-07-19 22:08:37,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 216 transitions. [2022-07-19 22:08:37,799 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 216 transitions. Word has length 155 [2022-07-19 22:08:37,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:08:37,799 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 216 transitions. [2022-07-19 22:08:37,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-19 22:08:37,799 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 216 transitions. [2022-07-19 22:08:37,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-19 22:08:37,801 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:08:37,801 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:08:37,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 22:08:38,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:08:38,019 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:08:38,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:08:38,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1170775228, now seen corresponding path program 1 times [2022-07-19 22:08:38,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:08:38,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773689927] [2022-07-19 22:08:38,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:38,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:08:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:38,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:08:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:38,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:08:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:38,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:08:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:38,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 22:08:38,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:38,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:08:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:38,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:38,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:38,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:08:38,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:38,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:08:38,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:38,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:08:38,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:38,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:38,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 22:08:38,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:38,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:08:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:38,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:08:38,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:38,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:38,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:38,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:38,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:08:38,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:38,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 22:08:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:38,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 22:08:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:38,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 22:08:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:38,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 22:08:38,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:38,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-19 22:08:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:38,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 22:08:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:38,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-19 22:08:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:38,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-19 22:08:38,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:38,500 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-07-19 22:08:38,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:08:38,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773689927] [2022-07-19 22:08:38,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773689927] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:08:38,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522122398] [2022-07-19 22:08:38,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:38,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:08:38,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:08:38,502 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) [2022-07-19 22:08:38,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 22:08:38,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:38,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 2597 conjuncts, 32 conjunts are in the unsatisfiable core [2022-07-19 22:08:38,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:08:39,055 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 22:08:39,254 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-19 22:08:39,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:08:39,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522122398] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:08:39,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:08:39,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14] total 22 [2022-07-19 22:08:39,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576626997] [2022-07-19 22:08:39,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:08:39,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 22:08:39,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:08:39,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 22:08:39,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2022-07-19 22:08:39,262 INFO L87 Difference]: Start difference. First operand 171 states and 216 transitions. Second operand has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 9 states have internal predecessors, (87), 4 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-19 22:08:39,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:08:39,375 INFO L93 Difference]: Finished difference Result 330 states and 416 transitions. [2022-07-19 22:08:39,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 22:08:39,376 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 9 states have internal predecessors, (87), 4 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 167 [2022-07-19 22:08:39,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:08:39,377 INFO L225 Difference]: With dead ends: 330 [2022-07-19 22:08:39,377 INFO L226 Difference]: Without dead ends: 180 [2022-07-19 22:08:39,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2022-07-19 22:08:39,378 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 12 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 128 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:08:39,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1678 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 128 Unchecked, 0.1s Time] [2022-07-19 22:08:39,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-07-19 22:08:39,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2022-07-19 22:08:39,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 119 states have (on average 1.218487394957983) internal successors, (145), 121 states have internal predecessors, (145), 40 states have call successors, (40), 18 states have call predecessors, (40), 20 states have return successors, (42), 40 states have call predecessors, (42), 39 states have call successors, (42) [2022-07-19 22:08:39,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 227 transitions. [2022-07-19 22:08:39,387 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 227 transitions. Word has length 167 [2022-07-19 22:08:39,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:08:39,387 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 227 transitions. [2022-07-19 22:08:39,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 9 states have internal predecessors, (87), 4 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-19 22:08:39,388 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 227 transitions. [2022-07-19 22:08:39,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-19 22:08:39,389 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:08:39,389 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:08:39,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 22:08:39,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:08:39,608 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:08:39,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:08:39,608 INFO L85 PathProgramCache]: Analyzing trace with hash -695933446, now seen corresponding path program 1 times [2022-07-19 22:08:39,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:08:39,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087877116] [2022-07-19 22:08:39,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:39,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:08:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:39,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:08:39,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:39,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:08:39,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:39,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:08:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:39,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 22:08:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:39,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:08:39,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:39,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:39,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:39,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:39,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:39,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:08:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:39,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:08:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:39,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:08:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:39,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:39,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:39,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 22:08:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:39,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:08:39,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:39,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:08:39,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:39,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:39,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:39,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:08:39,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:39,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 22:08:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:39,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 22:08:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:39,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 22:08:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:39,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 22:08:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:39,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-19 22:08:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:39,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 22:08:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:39,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-19 22:08:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:39,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-19 22:08:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:39,991 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-07-19 22:08:39,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:08:39,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087877116] [2022-07-19 22:08:39,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087877116] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:08:39,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491183862] [2022-07-19 22:08:39,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:39,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:08:39,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:08:39,993 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) [2022-07-19 22:08:39,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 22:08:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:40,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 2592 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 22:08:40,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:08:40,457 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-19 22:08:40,458 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:08:40,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491183862] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:08:40,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:08:40,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2022-07-19 22:08:40,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458307347] [2022-07-19 22:08:40,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:08:40,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 22:08:40,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:08:40,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 22:08:40,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-07-19 22:08:40,460 INFO L87 Difference]: Start difference. First operand 180 states and 227 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-19 22:08:40,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:08:40,581 INFO L93 Difference]: Finished difference Result 334 states and 425 transitions. [2022-07-19 22:08:40,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 22:08:40,582 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 167 [2022-07-19 22:08:40,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:08:40,583 INFO L225 Difference]: With dead ends: 334 [2022-07-19 22:08:40,583 INFO L226 Difference]: Without dead ends: 182 [2022-07-19 22:08:40,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-07-19 22:08:40,584 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 217 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:08:40,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 515 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:08:40,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-07-19 22:08:40,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2022-07-19 22:08:40,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 120 states have (on average 1.2083333333333333) internal successors, (145), 122 states have internal predecessors, (145), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (45), 41 states have call predecessors, (45), 40 states have call successors, (45) [2022-07-19 22:08:40,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 231 transitions. [2022-07-19 22:08:40,593 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 231 transitions. Word has length 167 [2022-07-19 22:08:40,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:08:40,593 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 231 transitions. [2022-07-19 22:08:40,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-19 22:08:40,593 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 231 transitions. [2022-07-19 22:08:40,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-07-19 22:08:40,595 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:08:40,595 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:08:40,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 22:08:40,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:08:40,815 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:08:40,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:08:40,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1022744148, now seen corresponding path program 1 times [2022-07-19 22:08:40,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:08:40,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764360772] [2022-07-19 22:08:40,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:40,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:08:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:40,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:08:40,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:40,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:08:40,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:40,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:08:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:40,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 22:08:40,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:40,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:08:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:40,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:40,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:40,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:40,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:08:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:40,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:08:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:40,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:08:40,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:40,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:40,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 22:08:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:41,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 22:08:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:41,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:08:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:41,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 22:08:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:41,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:41,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:41,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:08:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:41,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 22:08:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:41,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 22:08:41,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:41,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 22:08:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:41,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 22:08:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:41,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 22:08:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:41,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-19 22:08:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:41,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-19 22:08:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:41,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-19 22:08:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:41,137 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-07-19 22:08:41,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:08:41,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764360772] [2022-07-19 22:08:41,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764360772] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:08:41,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745789913] [2022-07-19 22:08:41,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:41,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:08:41,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:08:41,139 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) [2022-07-19 22:08:41,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 22:08:41,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:41,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 2621 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-19 22:08:41,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:08:42,371 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= 0 (select (select |c_#memory_$Pointer$.offset| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset)))) (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= (select (select |c_#memory_$Pointer$.base| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset) 0)))) is different from true [2022-07-19 22:08:48,144 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-07-19 22:08:48,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:08:48,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745789913] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:08:48,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:08:48,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-07-19 22:08:48,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561364563] [2022-07-19 22:08:48,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:08:48,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 22:08:48,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:08:48,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 22:08:48,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=202, Unknown=3, NotChecked=28, Total=272 [2022-07-19 22:08:48,147 INFO L87 Difference]: Start difference. First operand 182 states and 231 transitions. Second operand has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-19 22:08:48,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:08:48,329 INFO L93 Difference]: Finished difference Result 341 states and 443 transitions. [2022-07-19 22:08:48,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 22:08:48,330 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) Word has length 173 [2022-07-19 22:08:48,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:08:48,331 INFO L225 Difference]: With dead ends: 341 [2022-07-19 22:08:48,331 INFO L226 Difference]: Without dead ends: 185 [2022-07-19 22:08:48,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=54, Invalid=253, Unknown=3, NotChecked=32, Total=342 [2022-07-19 22:08:48,332 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 5 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 313 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:08:48,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1107 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 313 Unchecked, 0.1s Time] [2022-07-19 22:08:48,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-07-19 22:08:48,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 184. [2022-07-19 22:08:48,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 122 states have (on average 1.2049180327868851) internal successors, (147), 123 states have internal predecessors, (147), 41 states have call successors, (41), 19 states have call predecessors, (41), 20 states have return successors, (45), 41 states have call predecessors, (45), 40 states have call successors, (45) [2022-07-19 22:08:48,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 233 transitions. [2022-07-19 22:08:48,340 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 233 transitions. Word has length 173 [2022-07-19 22:08:48,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:08:48,341 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 233 transitions. [2022-07-19 22:08:48,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-19 22:08:48,341 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 233 transitions. [2022-07-19 22:08:48,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-19 22:08:48,350 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:08:48,351 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:08:48,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 22:08:48,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:08:48,572 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:08:48,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:08:48,572 INFO L85 PathProgramCache]: Analyzing trace with hash -183837512, now seen corresponding path program 1 times [2022-07-19 22:08:48,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:08:48,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359957768] [2022-07-19 22:08:48,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:48,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:08:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:48,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:08:48,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:48,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:08:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:48,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:08:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:48,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 22:08:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:48,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:08:48,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:48,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:48,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:48,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:08:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:48,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:08:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:48,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:08:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:48,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:48,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 22:08:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:48,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 22:08:48,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:48,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:08:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:48,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 22:08:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:48,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 22:08:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:49,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:49,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:49,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:08:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:49,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 22:08:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:49,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 22:08:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:49,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-19 22:08:49,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:49,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-19 22:08:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:49,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-19 22:08:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:49,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-19 22:08:49,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:49,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-19 22:08:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:49,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-19 22:08:49,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:49,173 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2022-07-19 22:08:49,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:08:49,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359957768] [2022-07-19 22:08:49,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359957768] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:08:49,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908411693] [2022-07-19 22:08:49,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:49,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:08:49,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:08:49,175 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) [2022-07-19 22:08:49,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 22:08:49,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:49,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 2651 conjuncts, 41 conjunts are in the unsatisfiable core [2022-07-19 22:08:49,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:08:49,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:08:49,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-07-19 22:08:50,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:08:50,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:08:50,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:08:50,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:08:50,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:08:50,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:08:50,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:08:50,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:08:50,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:08:50,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:08:50,072 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-07-19 22:08:50,235 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-07-19 22:08:50,235 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:08:50,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908411693] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:08:50,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:08:50,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [17] total 30 [2022-07-19 22:08:50,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830294633] [2022-07-19 22:08:50,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:08:50,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-19 22:08:50,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:08:50,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-19 22:08:50,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-07-19 22:08:50,237 INFO L87 Difference]: Start difference. First operand 184 states and 233 transitions. Second operand has 15 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 8 states have call successors, (27), 5 states have call predecessors, (27), 3 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2022-07-19 22:08:50,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:08:50,606 INFO L93 Difference]: Finished difference Result 346 states and 435 transitions. [2022-07-19 22:08:50,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 22:08:50,607 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 8 states have call successors, (27), 5 states have call predecessors, (27), 3 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) Word has length 178 [2022-07-19 22:08:50,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:08:50,608 INFO L225 Difference]: With dead ends: 346 [2022-07-19 22:08:50,608 INFO L226 Difference]: Without dead ends: 267 [2022-07-19 22:08:50,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 211 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=1280, Unknown=0, NotChecked=0, Total=1406 [2022-07-19 22:08:50,609 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 214 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 22:08:50,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 1053 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 190 Invalid, 0 Unknown, 98 Unchecked, 0.2s Time] [2022-07-19 22:08:50,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-07-19 22:08:50,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 258. [2022-07-19 22:08:50,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 181 states have (on average 1.2375690607734806) internal successors, (224), 181 states have internal predecessors, (224), 47 states have call successors, (47), 30 states have call predecessors, (47), 29 states have return successors, (51), 46 states have call predecessors, (51), 46 states have call successors, (51) [2022-07-19 22:08:50,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 322 transitions. [2022-07-19 22:08:50,619 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 322 transitions. Word has length 178 [2022-07-19 22:08:50,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:08:50,620 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 322 transitions. [2022-07-19 22:08:50,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 8 states have call successors, (27), 5 states have call predecessors, (27), 3 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2022-07-19 22:08:50,620 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 322 transitions. [2022-07-19 22:08:50,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-19 22:08:50,621 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:08:50,621 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:08:50,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-19 22:08:50,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:08:50,838 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:08:50,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:08:50,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1017170911, now seen corresponding path program 1 times [2022-07-19 22:08:50,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:08:50,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587862691] [2022-07-19 22:08:50,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:50,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:08:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:08:51,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:08:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:08:51,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 22:08:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:08:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:08:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:08:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:08:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 22:08:51,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 22:08:51,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:08:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 22:08:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 22:08:51,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:51,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:08:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 22:08:51,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 22:08:51,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-19 22:08:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-19 22:08:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-19 22:08:51,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:08:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:08:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-19 22:08:51,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,387 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2022-07-19 22:08:51,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:08:51,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587862691] [2022-07-19 22:08:51,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587862691] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:08:51,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529927339] [2022-07-19 22:08:51,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:51,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:08:51,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:08:51,389 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) [2022-07-19 22:08:51,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-19 22:08:51,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 2662 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-19 22:08:51,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:08:51,891 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-19 22:08:51,891 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:08:51,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529927339] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:08:51,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:08:51,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [17] total 22 [2022-07-19 22:08:51,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386678362] [2022-07-19 22:08:51,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:08:51,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 22:08:51,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:08:51,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 22:08:51,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2022-07-19 22:08:51,893 INFO L87 Difference]: Start difference. First operand 258 states and 322 transitions. Second operand has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-19 22:08:51,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:08:51,983 INFO L93 Difference]: Finished difference Result 438 states and 552 transitions. [2022-07-19 22:08:51,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 22:08:51,983 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 182 [2022-07-19 22:08:51,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:08:51,985 INFO L225 Difference]: With dead ends: 438 [2022-07-19 22:08:51,985 INFO L226 Difference]: Without dead ends: 267 [2022-07-19 22:08:51,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-07-19 22:08:51,986 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 2 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:08:51,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1155 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:08:51,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-07-19 22:08:51,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2022-07-19 22:08:51,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 187 states have (on average 1.2299465240641712) internal successors, (230), 190 states have internal predecessors, (230), 47 states have call successors, (47), 30 states have call predecessors, (47), 32 states have return successors, (55), 46 states have call predecessors, (55), 46 states have call successors, (55) [2022-07-19 22:08:51,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 332 transitions. [2022-07-19 22:08:51,995 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 332 transitions. Word has length 182 [2022-07-19 22:08:51,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:08:51,996 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 332 transitions. [2022-07-19 22:08:51,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-19 22:08:51,996 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 332 transitions. [2022-07-19 22:08:51,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-19 22:08:51,997 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:08:51,998 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:08:52,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-19 22:08:52,211 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,SelfDestructingSolverStorable7 [2022-07-19 22:08:52,211 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:08:52,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:08:52,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1394290473, now seen corresponding path program 2 times [2022-07-19 22:08:52,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:08:52,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505657636] [2022-07-19 22:08:52,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:52,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:08:52,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:08:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:08:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:08:52,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 22:08:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:08:52,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:52,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:52,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:08:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:08:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:08:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 22:08:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 22:08:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:08:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 22:08:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 22:08:52,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:08:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 22:08:52,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 22:08:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 22:08:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:08:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 22:08:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-19 22:08:52,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-19 22:08:52,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:08:52,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:08:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-19 22:08:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,851 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-07-19 22:08:52,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:08:52,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505657636] [2022-07-19 22:08:52,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505657636] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:08:52,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:08:52,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-19 22:08:52,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322773088] [2022-07-19 22:08:52,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:08:52,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-19 22:08:52,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:08:52,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-19 22:08:52,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2022-07-19 22:08:52,856 INFO L87 Difference]: Start difference. First operand 267 states and 332 transitions. Second operand has 20 states, 17 states have (on average 4.588235294117647) internal successors, (78), 14 states have internal predecessors, (78), 9 states have call successors, (27), 7 states have call predecessors, (27), 4 states have return successors, (25), 7 states have call predecessors, (25), 8 states have call successors, (25) [2022-07-19 22:08:54,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:08:54,989 INFO L93 Difference]: Finished difference Result 400 states and 511 transitions. [2022-07-19 22:08:54,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-19 22:08:54,989 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 4.588235294117647) internal successors, (78), 14 states have internal predecessors, (78), 9 states have call successors, (27), 7 states have call predecessors, (27), 4 states have return successors, (25), 7 states have call predecessors, (25), 8 states have call successors, (25) Word has length 193 [2022-07-19 22:08:54,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:08:54,992 INFO L225 Difference]: With dead ends: 400 [2022-07-19 22:08:54,992 INFO L226 Difference]: Without dead ends: 324 [2022-07-19 22:08:54,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=224, Invalid=1258, Unknown=0, NotChecked=0, Total=1482 [2022-07-19 22:08:54,993 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 341 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 2421 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 2686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 2421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-19 22:08:54,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 1044 Invalid, 2686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 2421 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-19 22:08:54,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-07-19 22:08:55,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 297. [2022-07-19 22:08:55,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 206 states have (on average 1.2281553398058251) internal successors, (253), 212 states have internal predecessors, (253), 53 states have call successors, (53), 30 states have call predecessors, (53), 37 states have return successors, (69), 54 states have call predecessors, (69), 52 states have call successors, (69) [2022-07-19 22:08:55,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 375 transitions. [2022-07-19 22:08:55,025 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 375 transitions. Word has length 193 [2022-07-19 22:08:55,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:08:55,026 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 375 transitions. [2022-07-19 22:08:55,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 4.588235294117647) internal successors, (78), 14 states have internal predecessors, (78), 9 states have call successors, (27), 7 states have call predecessors, (27), 4 states have return successors, (25), 7 states have call predecessors, (25), 8 states have call successors, (25) [2022-07-19 22:08:55,026 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 375 transitions. [2022-07-19 22:08:55,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-19 22:08:55,028 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:08:55,028 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:08:55,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 22:08:55,029 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:08:55,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:08:55,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1903763563, now seen corresponding path program 1 times [2022-07-19 22:08:55,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:08:55,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892110282] [2022-07-19 22:08:55,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:55,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:08:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:08:55,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:08:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:08:55,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 22:08:55,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:08:55,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:08:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:08:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:08:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 22:08:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 22:08:55,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:08:55,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 22:08:55,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 22:08:55,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:08:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 22:08:55,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 22:08:55,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 22:08:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:08:55,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 22:08:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-19 22:08:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-19 22:08:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:08:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:08:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-19 22:08:55,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,825 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-07-19 22:08:55,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:08:55,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892110282] [2022-07-19 22:08:55,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892110282] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:08:55,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295947755] [2022-07-19 22:08:55,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:55,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:08:55,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:08:55,827 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) [2022-07-19 22:08:55,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-19 22:08:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:56,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 2711 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-19 22:08:56,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:08:56,416 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-07-19 22:08:56,417 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:08:56,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295947755] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:08:56,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:08:56,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [20] total 25 [2022-07-19 22:08:56,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367275871] [2022-07-19 22:08:56,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:08:56,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 22:08:56,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:08:56,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 22:08:56,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=544, Unknown=0, NotChecked=0, Total=600 [2022-07-19 22:08:56,419 INFO L87 Difference]: Start difference. First operand 297 states and 375 transitions. Second operand has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-19 22:08:56,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:08:56,502 INFO L93 Difference]: Finished difference Result 432 states and 548 transitions. [2022-07-19 22:08:56,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 22:08:56,503 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 193 [2022-07-19 22:08:56,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:08:56,506 INFO L225 Difference]: With dead ends: 432 [2022-07-19 22:08:56,506 INFO L226 Difference]: Without dead ends: 270 [2022-07-19 22:08:56,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-07-19 22:08:56,508 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 2 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:08:56,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1156 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:08:56,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-07-19 22:08:56,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 268. [2022-07-19 22:08:56,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 185 states have (on average 1.2216216216216216) internal successors, (226), 189 states have internal predecessors, (226), 49 states have call successors, (49), 28 states have call predecessors, (49), 33 states have return successors, (61), 50 states have call predecessors, (61), 48 states have call successors, (61) [2022-07-19 22:08:56,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 336 transitions. [2022-07-19 22:08:56,527 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 336 transitions. Word has length 193 [2022-07-19 22:08:56,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:08:56,527 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 336 transitions. [2022-07-19 22:08:56,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-19 22:08:56,528 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 336 transitions. [2022-07-19 22:08:56,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-07-19 22:08:56,529 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:08:56,529 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:08:56,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-19 22:08:56,751 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 [2022-07-19 22:08:56,751 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:08:56,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:08:56,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1026335268, now seen corresponding path program 1 times [2022-07-19 22:08:56,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:08:56,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018570434] [2022-07-19 22:08:56,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:56,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:08:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:56,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:08:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:56,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:08:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:56,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:08:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:56,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 22:08:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:56,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:08:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:56,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:56,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:56,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:08:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:56,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:08:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:56,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:08:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:56,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:56,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:56,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 22:08:56,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:56,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 22:08:56,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:56,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:08:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:56,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 22:08:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:56,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 22:08:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:56,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:56,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:56,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:56,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:08:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:56,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 22:08:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:57,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 22:08:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:57,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 22:08:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:57,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:08:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:57,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 22:08:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:57,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-19 22:08:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:57,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-19 22:08:57,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:57,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-19 22:08:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:57,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 22:08:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:57,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-19 22:08:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:57,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-19 22:08:57,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:57,088 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2022-07-19 22:08:57,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:08:57,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018570434] [2022-07-19 22:08:57,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018570434] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:08:57,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:08:57,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 22:08:57,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766751188] [2022-07-19 22:08:57,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:08:57,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 22:08:57,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:08:57,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 22:08:57,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 22:08:57,091 INFO L87 Difference]: Start difference. First operand 268 states and 336 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (28), 6 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-19 22:08:57,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:08:57,732 INFO L93 Difference]: Finished difference Result 446 states and 567 transitions. [2022-07-19 22:08:57,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 22:08:57,733 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (28), 6 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 195 [2022-07-19 22:08:57,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:08:57,734 INFO L225 Difference]: With dead ends: 446 [2022-07-19 22:08:57,734 INFO L226 Difference]: Without dead ends: 259 [2022-07-19 22:08:57,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-07-19 22:08:57,735 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 128 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 22:08:57,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 462 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 22:08:57,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-07-19 22:08:57,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 238. [2022-07-19 22:08:57,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 165 states have (on average 1.206060606060606) internal successors, (199), 168 states have internal predecessors, (199), 43 states have call successors, (43), 26 states have call predecessors, (43), 29 states have return successors, (48), 43 states have call predecessors, (48), 42 states have call successors, (48) [2022-07-19 22:08:57,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 290 transitions. [2022-07-19 22:08:57,745 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 290 transitions. Word has length 195 [2022-07-19 22:08:57,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:08:57,745 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 290 transitions. [2022-07-19 22:08:57,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (28), 6 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-19 22:08:57,745 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 290 transitions. [2022-07-19 22:08:57,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-07-19 22:08:57,746 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:08:57,747 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:08:57,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 22:08:57,747 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:08:57,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:08:57,747 INFO L85 PathProgramCache]: Analyzing trace with hash 450820696, now seen corresponding path program 1 times [2022-07-19 22:08:57,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:08:57,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330458707] [2022-07-19 22:08:57,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:57,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:08:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:57,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:08:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:58,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:08:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:58,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:08:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:58,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 22:08:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:58,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:08:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:58,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:58,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:58,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:58,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:08:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:58,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:08:58,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:58,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:08:58,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:58,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:58,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 22:08:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:58,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 22:08:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:58,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:08:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:58,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 22:08:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:58,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 22:08:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:58,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:58,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:58,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:08:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:58,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 22:08:58,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:58,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 22:08:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:58,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 22:08:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:58,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:08:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:58,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 22:08:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:58,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-19 22:08:58,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:58,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-19 22:08:58,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:58,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-19 22:08:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:58,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 22:08:58,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:58,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:08:58,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:58,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-19 22:08:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:58,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-19 22:08:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:58,507 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2022-07-19 22:08:58,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:08:58,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330458707] [2022-07-19 22:08:58,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330458707] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:08:58,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756947454] [2022-07-19 22:08:58,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:58,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:08:58,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:08:58,509 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) [2022-07-19 22:08:58,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-19 22:08:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:58,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 2759 conjuncts, 41 conjunts are in the unsatisfiable core [2022-07-19 22:08:59,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:08:59,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:08:59,136 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-07-19 22:08:59,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:08:59,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:08:59,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:08:59,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:08:59,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:08:59,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:08:59,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:08:59,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:08:59,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:08:59,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:08:59,488 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-07-19 22:08:59,653 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-19 22:08:59,653 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:08:59,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756947454] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:08:59,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:08:59,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [19] total 32 [2022-07-19 22:08:59,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897563746] [2022-07-19 22:08:59,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:08:59,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-19 22:08:59,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:08:59,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-19 22:08:59,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2022-07-19 22:08:59,655 INFO L87 Difference]: Start difference. First operand 238 states and 290 transitions. Second operand has 15 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 9 states have call successors, (29), 5 states have call predecessors, (29), 3 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2022-07-19 22:09:00,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:09:00,126 INFO L93 Difference]: Finished difference Result 334 states and 405 transitions. [2022-07-19 22:09:00,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 22:09:00,126 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 9 states have call successors, (29), 5 states have call predecessors, (29), 3 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) Word has length 200 [2022-07-19 22:09:00,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:09:00,127 INFO L225 Difference]: With dead ends: 334 [2022-07-19 22:09:00,128 INFO L226 Difference]: Without dead ends: 254 [2022-07-19 22:09:00,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 240 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=147, Invalid=1413, Unknown=0, NotChecked=0, Total=1560 [2022-07-19 22:09:00,129 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 199 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1878 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 198 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 22:09:00,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 1878 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 361 Invalid, 0 Unknown, 198 Unchecked, 0.4s Time] [2022-07-19 22:09:00,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-07-19 22:09:00,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 249. [2022-07-19 22:09:00,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 172 states have (on average 1.191860465116279) internal successors, (205), 175 states have internal predecessors, (205), 45 states have call successors, (45), 28 states have call predecessors, (45), 31 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2022-07-19 22:09:00,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 299 transitions. [2022-07-19 22:09:00,139 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 299 transitions. Word has length 200 [2022-07-19 22:09:00,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:09:00,139 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 299 transitions. [2022-07-19 22:09:00,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 9 states have call successors, (29), 5 states have call predecessors, (29), 3 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2022-07-19 22:09:00,140 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 299 transitions. [2022-07-19 22:09:00,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-07-19 22:09:00,154 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:09:00,155 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:09:00,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-19 22:09:00,367 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,SelfDestructingSolverStorable11 [2022-07-19 22:09:00,367 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:09:00,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:09:00,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1734404003, now seen corresponding path program 1 times [2022-07-19 22:09:00,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:09:00,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985847642] [2022-07-19 22:09:00,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:09:00,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:09:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:00,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:09:00,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:00,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:09:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:00,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:09:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:00,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 22:09:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:00,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:09:00,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:00,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:09:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:00,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:09:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:00,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:09:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:00,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:09:00,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:00,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:09:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:00,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:09:00,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:00,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 22:09:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:00,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 22:09:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:01,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:09:01,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:01,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 22:09:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:01,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 22:09:01,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:01,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:09:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:01,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:09:01,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:01,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:09:01,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:01,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 22:09:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:01,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 22:09:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:01,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 22:09:01,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:01,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:09:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:01,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 22:09:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:01,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-19 22:09:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:01,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-19 22:09:01,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:01,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-19 22:09:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:01,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 22:09:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:01,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:09:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:01,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-19 22:09:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:01,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-19 22:09:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:01,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:09:01,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:01,356 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 24 proven. 22 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2022-07-19 22:09:01,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:09:01,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985847642] [2022-07-19 22:09:01,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985847642] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:09:01,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585272378] [2022-07-19 22:09:01,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:09:01,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:09:01,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:09:01,358 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) [2022-07-19 22:09:01,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-19 22:09:01,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:01,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 2786 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-19 22:09:01,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:09:01,970 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-07-19 22:09:01,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:09:01,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585272378] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:09:01,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:09:01,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [30] total 34 [2022-07-19 22:09:01,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877247241] [2022-07-19 22:09:01,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:09:01,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 22:09:01,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:09:01,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 22:09:01,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1041, Unknown=0, NotChecked=0, Total=1122 [2022-07-19 22:09:01,973 INFO L87 Difference]: Start difference. First operand 249 states and 299 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-07-19 22:09:02,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:09:02,050 INFO L93 Difference]: Finished difference Result 488 states and 585 transitions. [2022-07-19 22:09:02,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 22:09:02,051 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 209 [2022-07-19 22:09:02,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:09:02,052 INFO L225 Difference]: With dead ends: 488 [2022-07-19 22:09:02,052 INFO L226 Difference]: Without dead ends: 251 [2022-07-19 22:09:02,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=1105, Unknown=0, NotChecked=0, Total=1190 [2022-07-19 22:09:02,054 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 2 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:09:02,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 947 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:09:02,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-07-19 22:09:02,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2022-07-19 22:09:02,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 173 states have (on average 1.1907514450867052) internal successors, (206), 177 states have internal predecessors, (206), 45 states have call successors, (45), 28 states have call predecessors, (45), 32 states have return successors, (50), 45 states have call predecessors, (50), 44 states have call successors, (50) [2022-07-19 22:09:02,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 301 transitions. [2022-07-19 22:09:02,064 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 301 transitions. Word has length 209 [2022-07-19 22:09:02,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:09:02,064 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 301 transitions. [2022-07-19 22:09:02,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-07-19 22:09:02,065 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 301 transitions. [2022-07-19 22:09:02,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-19 22:09:02,066 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:09:02,066 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:09:02,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-19 22:09:02,287 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,SelfDestructingSolverStorable12 [2022-07-19 22:09:02,287 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:09:02,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:09:02,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1271160118, now seen corresponding path program 1 times [2022-07-19 22:09:02,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:09:02,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608318299] [2022-07-19 22:09:02,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:09:02,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:09:02,329 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:09:02,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [562691883] [2022-07-19 22:09:02,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:09:02,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:09:02,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:09:02,331 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) [2022-07-19 22:09:02,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-19 22:09:02,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:02,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 2891 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-19 22:09:02,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:09:02,868 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-07-19 22:09:02,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:09:02,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:09:02,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608318299] [2022-07-19 22:09:02,868 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:09:02,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562691883] [2022-07-19 22:09:02,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562691883] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:09:02,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:09:02,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 22:09:02,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140100052] [2022-07-19 22:09:02,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:09:02,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 22:09:02,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:09:02,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 22:09:02,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 22:09:02,873 INFO L87 Difference]: Start difference. First operand 251 states and 301 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-07-19 22:09:02,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:09:02,951 INFO L93 Difference]: Finished difference Result 429 states and 516 transitions. [2022-07-19 22:09:02,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 22:09:02,952 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 215 [2022-07-19 22:09:02,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:09:02,953 INFO L225 Difference]: With dead ends: 429 [2022-07-19 22:09:02,953 INFO L226 Difference]: Without dead ends: 249 [2022-07-19 22:09:02,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 22:09:02,954 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 2 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:09:02,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 948 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:09:02,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-07-19 22:09:02,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 244. [2022-07-19 22:09:02,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 168 states have (on average 1.1845238095238095) internal successors, (199), 171 states have internal predecessors, (199), 45 states have call successors, (45), 28 states have call predecessors, (45), 30 states have return successors, (48), 44 states have call predecessors, (48), 44 states have call successors, (48) [2022-07-19 22:09:02,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 292 transitions. [2022-07-19 22:09:02,965 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 292 transitions. Word has length 215 [2022-07-19 22:09:02,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:09:02,966 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 292 transitions. [2022-07-19 22:09:02,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-07-19 22:09:02,967 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 292 transitions. [2022-07-19 22:09:02,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-07-19 22:09:02,968 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:09:02,968 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:09:02,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-19 22:09:03,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-19 22:09:03,191 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:09:03,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:09:03,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1244691977, now seen corresponding path program 1 times [2022-07-19 22:09:03,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:09:03,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651574384] [2022-07-19 22:09:03,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:09:03,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:09:03,272 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:09:03,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [601051928] [2022-07-19 22:09:03,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:09:03,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:09:03,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:09:03,274 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:09:03,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-19 22:09:03,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 2996 conjuncts, 91 conjunts are in the unsatisfiable core [2022-07-19 22:09:03,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:09:03,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:03,985 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-07-19 22:09:03,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:03,989 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-07-19 22:09:04,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:04,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:04,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:04,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:04,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:04,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:04,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:04,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:04,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:04,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:04,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:04,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:04,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:04,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:04,572 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 22:09:04,575 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-19 22:09:04,575 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 78 [2022-07-19 22:09:04,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:04,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:04,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:04,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:04,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:04,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:04,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:04,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:04,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:04,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:04,604 INFO L356 Elim1Store]: treesize reduction 252, result has 4.2 percent of original size [2022-07-19 22:09:04,605 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 78 [2022-07-19 22:09:05,197 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 115 proven. 5 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-07-19 22:09:05,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:09:06,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:09:06,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651574384] [2022-07-19 22:09:06,034 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:09:06,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601051928] [2022-07-19 22:09:06,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601051928] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:09:06,035 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:09:06,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2022-07-19 22:09:06,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051982126] [2022-07-19 22:09:06,035 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 22:09:06,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-19 22:09:06,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:09:06,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-19 22:09:06,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1065, Unknown=0, NotChecked=0, Total=1190 [2022-07-19 22:09:06,037 INFO L87 Difference]: Start difference. First operand 244 states and 292 transitions. Second operand has 26 states, 22 states have (on average 4.5) internal successors, (99), 24 states have internal predecessors, (99), 12 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2022-07-19 22:09:06,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:09:06,776 INFO L93 Difference]: Finished difference Result 335 states and 405 transitions. [2022-07-19 22:09:06,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-19 22:09:06,777 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 4.5) internal successors, (99), 24 states have internal predecessors, (99), 12 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) Word has length 221 [2022-07-19 22:09:06,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:09:06,778 INFO L225 Difference]: With dead ends: 335 [2022-07-19 22:09:06,778 INFO L226 Difference]: Without dead ends: 255 [2022-07-19 22:09:06,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 205 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=197, Invalid=1783, Unknown=0, NotChecked=0, Total=1980 [2022-07-19 22:09:06,779 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 206 mSDsluCounter, 2010 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 467 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 22:09:06,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 2200 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 422 Invalid, 0 Unknown, 467 Unchecked, 0.5s Time] [2022-07-19 22:09:06,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-07-19 22:09:06,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 248. [2022-07-19 22:09:06,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 171 states have (on average 1.1812865497076024) internal successors, (202), 174 states have internal predecessors, (202), 45 states have call successors, (45), 28 states have call predecessors, (45), 31 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2022-07-19 22:09:06,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 296 transitions. [2022-07-19 22:09:06,788 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 296 transitions. Word has length 221 [2022-07-19 22:09:06,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:09:06,788 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 296 transitions. [2022-07-19 22:09:06,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 4.5) internal successors, (99), 24 states have internal predecessors, (99), 12 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2022-07-19 22:09:06,788 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 296 transitions. [2022-07-19 22:09:06,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-07-19 22:09:06,789 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:09:06,790 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:09:06,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-19 22:09:06,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-19 22:09:06,999 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:09:07,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:09:07,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1831497991, now seen corresponding path program 1 times [2022-07-19 22:09:07,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:09:07,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125935520] [2022-07-19 22:09:07,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:09:07,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:09:07,057 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:09:07,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [47682521] [2022-07-19 22:09:07,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:09:07,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:09:07,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:09:07,059 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:09:07,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-19 22:09:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:07,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 2991 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-19 22:09:07,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:09:08,425 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_iter_is_valid_~iter.offset Int) (aws_hash_iter_is_valid_~iter.base Int)) (not (= (select (select |c_#memory_$Pointer$.offset| aws_hash_iter_is_valid_~iter.base) aws_hash_iter_is_valid_~iter.offset) 0))) (exists ((aws_hash_iter_is_valid_~iter.offset Int) (aws_hash_iter_is_valid_~iter.base Int)) (not (= (select (select |c_#memory_$Pointer$.base| aws_hash_iter_is_valid_~iter.base) aws_hash_iter_is_valid_~iter.offset) 0)))) is different from true [2022-07-19 22:09:13,143 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2022-07-19 22:09:13,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:09:13,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:09:13,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125935520] [2022-07-19 22:09:13,144 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:09:13,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47682521] [2022-07-19 22:09:13,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47682521] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:09:13,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:09:13,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 22:09:13,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186377486] [2022-07-19 22:09:13,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:09:13,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 22:09:13,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:09:13,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 22:09:13,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2022-07-19 22:09:13,145 INFO L87 Difference]: Start difference. First operand 248 states and 296 transitions. Second operand has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-19 22:09:13,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:09:13,241 INFO L93 Difference]: Finished difference Result 348 states and 426 transitions. [2022-07-19 22:09:13,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 22:09:13,241 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 221 [2022-07-19 22:09:13,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:09:13,242 INFO L225 Difference]: With dead ends: 348 [2022-07-19 22:09:13,242 INFO L226 Difference]: Without dead ends: 243 [2022-07-19 22:09:13,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2022-07-19 22:09:13,243 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 0 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 303 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:09:13,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 913 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 303 Unchecked, 0.1s Time] [2022-07-19 22:09:13,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-07-19 22:09:13,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 241. [2022-07-19 22:09:13,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 165 states have (on average 1.1757575757575758) internal successors, (194), 167 states have internal predecessors, (194), 45 states have call successors, (45), 28 states have call predecessors, (45), 30 states have return successors, (48), 45 states have call predecessors, (48), 44 states have call successors, (48) [2022-07-19 22:09:13,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 287 transitions. [2022-07-19 22:09:13,275 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 287 transitions. Word has length 221 [2022-07-19 22:09:13,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:09:13,275 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 287 transitions. [2022-07-19 22:09:13,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-19 22:09:13,276 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 287 transitions. [2022-07-19 22:09:13,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-07-19 22:09:13,277 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:09:13,277 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:09:13,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-19 22:09:13,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:09:13,490 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:09:13,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:09:13,491 INFO L85 PathProgramCache]: Analyzing trace with hash -359144008, now seen corresponding path program 1 times [2022-07-19 22:09:13,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:09:13,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406960068] [2022-07-19 22:09:13,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:09:13,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:09:13,537 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:09:13,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [753939047] [2022-07-19 22:09:13,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:09:13,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:09:13,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:09:13,540 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:09:13,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-19 22:09:14,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:14,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 3008 conjuncts, 95 conjunts are in the unsatisfiable core [2022-07-19 22:09:14,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:09:14,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:14,286 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-07-19 22:09:14,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:14,291 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-07-19 22:09:14,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:14,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:14,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:14,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:14,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:14,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:14,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:14,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:14,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:14,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:14,846 INFO L356 Elim1Store]: treesize reduction 252, result has 4.2 percent of original size [2022-07-19 22:09:14,846 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 78 [2022-07-19 22:09:14,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:14,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:14,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:14,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:14,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:14,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:14,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:14,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:14,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:14,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:14,859 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-19 22:09:14,860 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 78 [2022-07-19 22:09:15,616 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 115 proven. 5 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-07-19 22:09:15,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:09:18,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:09:18,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406960068] [2022-07-19 22:09:18,379 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:09:18,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753939047] [2022-07-19 22:09:18,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753939047] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:09:18,380 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:09:18,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2022-07-19 22:09:18,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954589055] [2022-07-19 22:09:18,380 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 22:09:18,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-19 22:09:18,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:09:18,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-19 22:09:18,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1131, Unknown=0, NotChecked=0, Total=1260 [2022-07-19 22:09:18,381 INFO L87 Difference]: Start difference. First operand 241 states and 287 transitions. Second operand has 27 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 24 states have internal predecessors, (100), 12 states have call successors, (31), 6 states have call predecessors, (31), 7 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2022-07-19 22:09:19,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:09:19,045 INFO L93 Difference]: Finished difference Result 329 states and 401 transitions. [2022-07-19 22:09:19,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-19 22:09:19,046 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 24 states have internal predecessors, (100), 12 states have call successors, (31), 6 states have call predecessors, (31), 7 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) Word has length 222 [2022-07-19 22:09:19,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:09:19,047 INFO L225 Difference]: With dead ends: 329 [2022-07-19 22:09:19,047 INFO L226 Difference]: Without dead ends: 250 [2022-07-19 22:09:19,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 207 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=197, Invalid=1873, Unknown=0, NotChecked=0, Total=2070 [2022-07-19 22:09:19,048 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 212 mSDsluCounter, 1944 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 2132 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 401 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 22:09:19,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 2132 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 314 Invalid, 0 Unknown, 401 Unchecked, 0.4s Time] [2022-07-19 22:09:19,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-07-19 22:09:19,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 246. [2022-07-19 22:09:19,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 170 states have (on average 1.1705882352941177) internal successors, (199), 172 states have internal predecessors, (199), 45 states have call successors, (45), 28 states have call predecessors, (45), 30 states have return successors, (48), 45 states have call predecessors, (48), 44 states have call successors, (48) [2022-07-19 22:09:19,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 292 transitions. [2022-07-19 22:09:19,058 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 292 transitions. Word has length 222 [2022-07-19 22:09:19,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:09:19,058 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 292 transitions. [2022-07-19 22:09:19,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 24 states have internal predecessors, (100), 12 states have call successors, (31), 6 states have call predecessors, (31), 7 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2022-07-19 22:09:19,059 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 292 transitions. [2022-07-19 22:09:19,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-07-19 22:09:19,060 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:09:19,060 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:09:19,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-19 22:09:19,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-19 22:09:19,283 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:09:19,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:09:19,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1437112506, now seen corresponding path program 1 times [2022-07-19 22:09:19,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:09:19,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255199398] [2022-07-19 22:09:19,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:09:19,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:09:19,330 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:09:19,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [509443189] [2022-07-19 22:09:19,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:09:19,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:09:19,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:09:19,332 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:09:19,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-19 22:09:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:19,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 3007 conjuncts, 93 conjunts are in the unsatisfiable core [2022-07-19 22:09:19,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:09:20,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:20,070 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-07-19 22:09:20,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:20,075 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-07-19 22:09:26,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:26,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:26,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:26,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:26,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:26,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:26,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:26,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:26,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:26,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:26,865 INFO L356 Elim1Store]: treesize reduction 252, result has 4.2 percent of original size [2022-07-19 22:09:26,865 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 78 [2022-07-19 22:09:26,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:26,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:26,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:26,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:26,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:26,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:26,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:26,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:26,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:26,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:26,877 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-19 22:09:26,877 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 78 [2022-07-19 22:09:29,634 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 74 proven. 5 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-07-19 22:09:29,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:09:31,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:09:31,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255199398] [2022-07-19 22:09:31,180 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:09:31,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509443189] [2022-07-19 22:09:31,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509443189] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:09:31,180 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:09:31,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2022-07-19 22:09:31,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007881974] [2022-07-19 22:09:31,181 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 22:09:31,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-19 22:09:31,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:09:31,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-19 22:09:31,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1210, Unknown=3, NotChecked=0, Total=1332 [2022-07-19 22:09:31,182 INFO L87 Difference]: Start difference. First operand 246 states and 292 transitions. Second operand has 28 states, 23 states have (on average 4.217391304347826) internal successors, (97), 24 states have internal predecessors, (97), 13 states have call successors, (31), 6 states have call predecessors, (31), 7 states have return successors, (29), 11 states have call predecessors, (29), 12 states have call successors, (29) [2022-07-19 22:09:38,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:09:38,251 INFO L93 Difference]: Finished difference Result 400 states and 487 transitions. [2022-07-19 22:09:38,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-07-19 22:09:38,251 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 23 states have (on average 4.217391304347826) internal successors, (97), 24 states have internal predecessors, (97), 13 states have call successors, (31), 6 states have call predecessors, (31), 7 states have return successors, (29), 11 states have call predecessors, (29), 12 states have call successors, (29) Word has length 225 [2022-07-19 22:09:38,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:09:38,253 INFO L225 Difference]: With dead ends: 400 [2022-07-19 22:09:38,253 INFO L226 Difference]: Without dead ends: 333 [2022-07-19 22:09:38,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 215 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1016 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=383, Invalid=4169, Unknown=4, NotChecked=0, Total=4556 [2022-07-19 22:09:38,255 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 277 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 2030 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 1385 SdHoareTripleChecker+Invalid, 2808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 2030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 619 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 22:09:38,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 1385 Invalid, 2808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 2030 Invalid, 0 Unknown, 619 Unchecked, 1.4s Time] [2022-07-19 22:09:38,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-07-19 22:09:38,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 300. [2022-07-19 22:09:38,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 212 states have (on average 1.1981132075471699) internal successors, (254), 214 states have internal predecessors, (254), 50 states have call successors, (50), 35 states have call predecessors, (50), 37 states have return successors, (55), 50 states have call predecessors, (55), 49 states have call successors, (55) [2022-07-19 22:09:38,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 359 transitions. [2022-07-19 22:09:38,267 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 359 transitions. Word has length 225 [2022-07-19 22:09:38,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:09:38,267 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 359 transitions. [2022-07-19 22:09:38,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 23 states have (on average 4.217391304347826) internal successors, (97), 24 states have internal predecessors, (97), 13 states have call successors, (31), 6 states have call predecessors, (31), 7 states have return successors, (29), 11 states have call predecessors, (29), 12 states have call successors, (29) [2022-07-19 22:09:38,267 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 359 transitions. [2022-07-19 22:09:38,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-19 22:09:38,268 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:09:38,269 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:09:38,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-07-19 22:09:38,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-19 22:09:38,487 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:09:38,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:09:38,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1338459295, now seen corresponding path program 1 times [2022-07-19 22:09:38,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:09:38,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335091750] [2022-07-19 22:09:38,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:09:38,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:09:38,531 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:09:38,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1732118179] [2022-07-19 22:09:38,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:09:38,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:09:38,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:09:38,533 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:09:38,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-19 22:09:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:39,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 3019 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-19 22:09:39,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:09:39,116 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-07-19 22:09:39,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:09:39,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:09:39,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335091750] [2022-07-19 22:09:39,117 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:09:39,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732118179] [2022-07-19 22:09:39,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732118179] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:09:39,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:09:39,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 22:09:39,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191262103] [2022-07-19 22:09:39,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:09:39,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 22:09:39,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:09:39,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 22:09:39,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 22:09:39,118 INFO L87 Difference]: Start difference. First operand 300 states and 359 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 1 states have call successors, (27) [2022-07-19 22:09:39,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:09:39,141 INFO L93 Difference]: Finished difference Result 417 states and 509 transitions. [2022-07-19 22:09:39,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 22:09:39,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 1 states have call successors, (27) Word has length 226 [2022-07-19 22:09:39,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:09:39,143 INFO L225 Difference]: With dead ends: 417 [2022-07-19 22:09:39,143 INFO L226 Difference]: Without dead ends: 289 [2022-07-19 22:09:39,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 22:09:39,144 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 0 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:09:39,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 813 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:09:39,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-07-19 22:09:39,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2022-07-19 22:09:39,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 203 states have (on average 1.1970443349753694) internal successors, (243), 203 states have internal predecessors, (243), 50 states have call successors, (50), 35 states have call predecessors, (50), 35 states have return successors, (53), 50 states have call predecessors, (53), 49 states have call successors, (53) [2022-07-19 22:09:39,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 346 transitions. [2022-07-19 22:09:39,156 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 346 transitions. Word has length 226 [2022-07-19 22:09:39,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:09:39,157 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 346 transitions. [2022-07-19 22:09:39,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 1 states have call successors, (27) [2022-07-19 22:09:39,157 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 346 transitions. [2022-07-19 22:09:39,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-07-19 22:09:39,158 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:09:39,158 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:09:39,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-19 22:09:39,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:09:39,375 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:09:39,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:09:39,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1656342513, now seen corresponding path program 1 times [2022-07-19 22:09:39,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:09:39,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813436038] [2022-07-19 22:09:39,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:09:39,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:09:39,426 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:09:39,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [269640938] [2022-07-19 22:09:39,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:09:39,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:09:39,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:09:39,430 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:09:39,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-19 22:09:40,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:40,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 3050 conjuncts, 349 conjunts are in the unsatisfiable core [2022-07-19 22:09:40,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:09:40,501 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 [2022-07-19 22:09:40,683 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-19 22:09:40,683 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-19 22:09:40,706 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 22:09:40,992 INFO L356 Elim1Store]: treesize reduction 184, result has 21.7 percent of original size [2022-07-19 22:09:40,992 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 93 treesize of output 123 [2022-07-19 22:09:41,249 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 22:09:41,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:41,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:41,296 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 25 [2022-07-19 22:09:41,358 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-07-19 22:09:41,362 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 22:09:41,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:41,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:41,371 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-07-19 22:09:41,374 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 [2022-07-19 22:09:41,381 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 22:09:42,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:42,741 INFO L356 Elim1Store]: treesize reduction 126, result has 25.9 percent of original size [2022-07-19 22:09:42,741 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 38 treesize of output 65 [2022-07-19 22:09:42,896 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 32 [2022-07-19 22:09:42,924 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 5 [2022-07-19 22:09:42,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:42,932 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-07-19 22:09:42,945 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-19 22:09:43,040 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-19 22:09:43,122 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4250 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4250) |c_#memory_int|)) (exists ((v_ArrVal_4251 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4251) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_4249 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4249) |c_#memory_$Pointer$.base|))) is different from true [2022-07-19 22:09:43,240 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-19 22:09:43,293 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4253 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_4253) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_4252 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_4252) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_4254 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_4254) |c_#memory_int|))) is different from true [2022-07-19 22:09:43,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:43,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:43,444 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2022-07-19 22:09:43,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:43,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:43,455 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 57 [2022-07-19 22:09:43,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:43,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:43,466 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 33 [2022-07-19 22:09:43,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:43,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:43,493 INFO L356 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-07-19 22:09:43,497 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 28 [2022-07-19 22:09:45,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:45,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:45,068 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 45 treesize of output 41 [2022-07-19 22:09:45,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:45,085 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-07-19 22:09:45,085 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 1 case distinctions, treesize of input 78 treesize of output 73 [2022-07-19 22:09:45,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:45,102 INFO L356 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-07-19 22:09:45,103 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 1 case distinctions, treesize of input 71 treesize of output 58 [2022-07-19 22:09:45,109 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 24 treesize of output 23 [2022-07-19 22:09:48,080 INFO L356 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2022-07-19 22:09:48,081 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 319 treesize of output 231 [2022-07-19 22:10:08,818 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 22:10:08,827 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 22:10:08,827 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 84 [2022-07-19 22:10:09,003 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 97 proven. 180 refuted. 0 times theorem prover too weak. 8 trivial. 6 not checked. [2022-07-19 22:10:09,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:10:09,491 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4259 (Array Int Int))) (< 0 (mod (select (select (store |c_#memory_int| |c_aws_hash_iter_begin_~#iter~1.base| v_ArrVal_4259) c_aws_hash_iter_begin_~state~11.base) (+ 40 c_aws_hash_iter_begin_~state~11.offset)) 18446744073709551616))) is different from false [2022-07-19 22:10:09,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:10:09,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813436038] [2022-07-19 22:10:09,517 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:10:09,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269640938] [2022-07-19 22:10:09,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269640938] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:10:09,517 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:10:09,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2022-07-19 22:10:09,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644030215] [2022-07-19 22:10:09,517 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 22:10:09,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-07-19 22:10:09,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:10:09,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-07-19 22:10:09,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=3432, Unknown=22, NotChecked=360, Total=4032 [2022-07-19 22:10:09,520 INFO L87 Difference]: Start difference. First operand 289 states and 346 transitions. Second operand has 59 states, 50 states have (on average 3.02) internal successors, (151), 49 states have internal predecessors, (151), 26 states have call successors, (39), 13 states have call predecessors, (39), 19 states have return successors, (36), 25 states have call predecessors, (36), 25 states have call successors, (36) [2022-07-19 22:10:17,943 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4250 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4250) |c_#memory_int|)) (exists ((|v___CPROVER_overflow_mult_~#c~1.base_159| Int) (v_ArrVal_4232 Int)) (and (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_159|) 0) (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_159| v_ArrVal_4232)))) (exists ((v_ArrVal_4251 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4251) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_4249 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4249) |c_#memory_$Pointer$.base|))) is different from true [2022-07-19 22:10:26,229 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4253 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_4253) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_4252 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_4252) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_4254 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_4254) |c_#memory_int|)) (exists ((|v___CPROVER_overflow_plus_~#c~0.base_30| Int)) (and (= (select |c_old(#valid)| |v___CPROVER_overflow_plus_~#c~0.base_30|) 0) (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_plus_~#c~0.base_30| 0))))) is different from true [2022-07-19 22:10:43,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:10:43,721 INFO L93 Difference]: Finished difference Result 590 states and 701 transitions. [2022-07-19 22:10:43,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-07-19 22:10:43,721 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 50 states have (on average 3.02) internal successors, (151), 49 states have internal predecessors, (151), 26 states have call successors, (39), 13 states have call predecessors, (39), 19 states have return successors, (36), 25 states have call predecessors, (36), 25 states have call successors, (36) Word has length 232 [2022-07-19 22:10:43,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:10:43,723 INFO L225 Difference]: With dead ends: 590 [2022-07-19 22:10:43,723 INFO L226 Difference]: Without dead ends: 437 [2022-07-19 22:10:43,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 227 SyntacticMatches, 20 SemanticMatches, 89 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 2688 ImplicationChecksByTransitivity, 57.7s TimeCoverageRelationStatistics Valid=399, Invalid=6892, Unknown=39, NotChecked=860, Total=8190 [2022-07-19 22:10:43,726 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 121 mSDsluCounter, 1557 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 1763 SdHoareTripleChecker+Invalid, 4555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3376 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 22:10:43,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 1763 Invalid, 4555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1117 Invalid, 0 Unknown, 3376 Unchecked, 1.2s Time] [2022-07-19 22:10:43,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-07-19 22:10:43,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 430. [2022-07-19 22:10:43,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 299 states have (on average 1.1505016722408026) internal successors, (344), 300 states have internal predecessors, (344), 74 states have call successors, (74), 56 states have call predecessors, (74), 56 states have return successors, (85), 73 states have call predecessors, (85), 73 states have call successors, (85) [2022-07-19 22:10:43,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 503 transitions. [2022-07-19 22:10:43,745 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 503 transitions. Word has length 232 [2022-07-19 22:10:43,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:10:43,745 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 503 transitions. [2022-07-19 22:10:43,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 50 states have (on average 3.02) internal successors, (151), 49 states have internal predecessors, (151), 26 states have call successors, (39), 13 states have call predecessors, (39), 19 states have return successors, (36), 25 states have call predecessors, (36), 25 states have call successors, (36) [2022-07-19 22:10:43,746 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 503 transitions. [2022-07-19 22:10:43,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-07-19 22:10:43,747 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:10:43,747 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:10:43,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-19 22:10:43,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:10:43,974 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:10:43,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:10:43,974 INFO L85 PathProgramCache]: Analyzing trace with hash -231164915, now seen corresponding path program 1 times [2022-07-19 22:10:43,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:10:43,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764853393] [2022-07-19 22:10:43,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:10:43,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:10:44,017 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:10:44,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [150820208] [2022-07-19 22:10:44,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:10:44,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:10:44,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:10:44,019 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:10:44,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-19 22:10:44,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:10:44,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 3054 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 22:10:44,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:10:44,717 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-07-19 22:10:44,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:10:44,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:10:44,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764853393] [2022-07-19 22:10:44,718 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:10:44,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150820208] [2022-07-19 22:10:44,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150820208] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:10:44,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:10:44,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 22:10:44,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137665630] [2022-07-19 22:10:44,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:10:44,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 22:10:44,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:10:44,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 22:10:44,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 22:10:44,724 INFO L87 Difference]: Start difference. First operand 430 states and 503 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 6 states have internal predecessors, (100), 2 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 4 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-19 22:10:44,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:10:44,763 INFO L93 Difference]: Finished difference Result 715 states and 845 transitions. [2022-07-19 22:10:44,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 22:10:44,764 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 6 states have internal predecessors, (100), 2 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 4 states have call predecessors, (30), 2 states have call successors, (30) Word has length 238 [2022-07-19 22:10:44,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:10:44,766 INFO L225 Difference]: With dead ends: 715 [2022-07-19 22:10:44,766 INFO L226 Difference]: Without dead ends: 428 [2022-07-19 22:10:44,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-19 22:10:44,767 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 2 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:10:44,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1220 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:10:44,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-07-19 22:10:44,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 428. [2022-07-19 22:10:44,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 298 states have (on average 1.1442953020134228) internal successors, (341), 299 states have internal predecessors, (341), 73 states have call successors, (73), 56 states have call predecessors, (73), 56 states have return successors, (83), 72 states have call predecessors, (83), 72 states have call successors, (83) [2022-07-19 22:10:44,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 497 transitions. [2022-07-19 22:10:44,786 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 497 transitions. Word has length 238 [2022-07-19 22:10:44,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:10:44,787 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 497 transitions. [2022-07-19 22:10:44,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 6 states have internal predecessors, (100), 2 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 4 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-19 22:10:44,787 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 497 transitions. [2022-07-19 22:10:44,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-07-19 22:10:44,788 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:10:44,788 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:10:44,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-19 22:10:45,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:10:45,007 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:10:45,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:10:45,008 INFO L85 PathProgramCache]: Analyzing trace with hash -148297415, now seen corresponding path program 1 times [2022-07-19 22:10:45,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:10:45,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398810761] [2022-07-19 22:10:45,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:10:45,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:10:45,050 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:10:45,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1496306650] [2022-07-19 22:10:45,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:10:45,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:10:45,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:10:45,052 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:10:45,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-19 22:10:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:10:45,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 3054 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 22:10:45,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:10:45,677 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-07-19 22:10:45,677 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:10:45,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:10:45,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398810761] [2022-07-19 22:10:45,677 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 22:10:45,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496306650] [2022-07-19 22:10:45,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496306650] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:10:45,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:10:45,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 22:10:45,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491026964] [2022-07-19 22:10:45,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:10:45,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 22:10:45,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:10:45,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 22:10:45,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 22:10:45,679 INFO L87 Difference]: Start difference. First operand 428 states and 497 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 6 states have internal predecessors, (108), 2 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (32), 4 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-19 22:10:45,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:10:45,714 INFO L93 Difference]: Finished difference Result 672 states and 783 transitions. [2022-07-19 22:10:45,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 22:10:45,715 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 6 states have internal predecessors, (108), 2 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (32), 4 states have call predecessors, (32), 2 states have call successors, (32) Word has length 238 [2022-07-19 22:10:45,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:10:45,717 INFO L225 Difference]: With dead ends: 672 [2022-07-19 22:10:45,717 INFO L226 Difference]: Without dead ends: 383 [2022-07-19 22:10:45,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-19 22:10:45,718 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 2 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:10:45,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1197 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:10:45,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-07-19 22:10:45,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2022-07-19 22:10:45,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 268 states have (on average 1.1492537313432836) internal successors, (308), 271 states have internal predecessors, (308), 62 states have call successors, (62), 51 states have call predecessors, (62), 52 states have return successors, (69), 60 states have call predecessors, (69), 61 states have call successors, (69) [2022-07-19 22:10:45,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 439 transitions. [2022-07-19 22:10:45,737 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 439 transitions. Word has length 238 [2022-07-19 22:10:45,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:10:45,737 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 439 transitions. [2022-07-19 22:10:45,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 6 states have internal predecessors, (108), 2 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (32), 4 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-19 22:10:45,738 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 439 transitions. [2022-07-19 22:10:45,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-07-19 22:10:45,739 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:10:45,739 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:10:45,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-19 22:10:45,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-07-19 22:10:45,955 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:10:45,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:10:45,956 INFO L85 PathProgramCache]: Analyzing trace with hash 86404045, now seen corresponding path program 1 times [2022-07-19 22:10:45,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:10:45,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302029329] [2022-07-19 22:10:45,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:10:45,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:10:45,997 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 22:10:45,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1834258164] [2022-07-19 22:10:45,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:10:45,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:10:45,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:10:45,999 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:10:46,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-19 22:10:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:10:47,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 3061 conjuncts, 59 conjunts are in the unsatisfiable core [2022-07-19 22:10:47,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:11:08,321 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 165 proven. 11 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-07-19 22:11:08,321 INFO L328 TraceCheckSpWp]: Computing backward predicates...