./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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_table_init_bounded_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 a20f0fb44c1e014f700b9e4b1558eda154ddd78bb739e07c9e4f28b94fe2d47f --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 11:07:57,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 11:07:57,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 11:07:57,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 11:07:57,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 11:07:57,879 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 11:07:57,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 11:07:57,885 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 11:07:57,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 11:07:57,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 11:07:57,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 11:07:57,893 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 11:07:57,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 11:07:57,895 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 11:07:57,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 11:07:57,900 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 11:07:57,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 11:07:57,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 11:07:57,902 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 11:07:57,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 11:07:57,907 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 11:07:57,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 11:07:57,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 11:07:57,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 11:07:57,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 11:07:57,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 11:07:57,912 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 11:07:57,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 11:07:57,913 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 11:07:57,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 11:07:57,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 11:07:57,914 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 11:07:57,915 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 11:07:57,915 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 11:07:57,916 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 11:07:57,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 11:07:57,917 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 11:07:57,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 11:07:57,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 11:07:57,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 11:07:57,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 11:07:57,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 11:07:57,920 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 11:07:57,942 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 11:07:57,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 11:07:57,942 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 11:07:57,943 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 11:07:57,943 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 11:07:57,943 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 11:07:57,944 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 11:07:57,944 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 11:07:57,944 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 11:07:57,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 11:07:57,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 11:07:57,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 11:07:57,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 11:07:57,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 11:07:57,945 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 11:07:57,945 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 11:07:57,946 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 11:07:57,946 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 11:07:57,946 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 11:07:57,946 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 11:07:57,946 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 11:07:57,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 11:07:57,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 11:07:57,947 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 11:07:57,947 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 11:07:57,947 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 11:07:57,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 11:07:57,947 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 11:07:57,947 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 11:07:57,947 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 11:07:57,948 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a20f0fb44c1e014f700b9e4b1558eda154ddd78bb739e07c9e4f28b94fe2d47f [2022-07-12 11:07:58,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 11:07:58,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 11:07:58,169 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 11:07:58,170 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 11:07:58,170 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 11:07:58,171 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i [2022-07-12 11:07:58,219 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae4a614bc/e8f23d913a8d475dbbc9d37aff89f5ea/FLAG3d50c468c [2022-07-12 11:07:58,863 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 11:07:58,864 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i [2022-07-12 11:07:58,889 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae4a614bc/e8f23d913a8d475dbbc9d37aff89f5ea/FLAG3d50c468c [2022-07-12 11:07:59,199 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae4a614bc/e8f23d913a8d475dbbc9d37aff89f5ea [2022-07-12 11:07:59,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 11:07:59,202 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 11:07:59,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 11:07:59,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 11:07:59,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 11:07:59,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 11:07:59" (1/1) ... [2022-07-12 11:07:59,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5265d5d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:07:59, skipping insertion in model container [2022-07-12 11:07:59,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 11:07:59" (1/1) ... [2022-07-12 11:07:59,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 11:07:59,280 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 11:07:59,491 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_table_init_bounded_harness.i[4501,4514] [2022-07-12 11:07:59,496 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_table_init_bounded_harness.i[4561,4574] [2022-07-12 11:08:00,078 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,078 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,079 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,079 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,080 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,088 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,094 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,096 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,096 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,097 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,106 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,106 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,107 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,315 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 11:08:00,316 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 11:08:00,316 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 11:08:00,317 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 11:08:00,318 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 11:08:00,319 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 11:08:00,319 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 11:08:00,320 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 11:08:00,320 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 11:08:00,320 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 11:08:00,412 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 11:08:00,659 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,660 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,682 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,684 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,690 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,690 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,708 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,708 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,710 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,710 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,710 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,711 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,711 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,742 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 11:08:00,776 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 11:08:00,791 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_table_init_bounded_harness.i[4501,4514] [2022-07-12 11:08:00,791 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_table_init_bounded_harness.i[4561,4574] [2022-07-12 11:08:00,825 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,829 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,829 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,830 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,830 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,836 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,837 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,837 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,838 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,838 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,839 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,839 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,839 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,891 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 11:08:00,892 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 11:08:00,892 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 11:08:00,893 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 11:08:00,894 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 11:08:00,894 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 11:08:00,895 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 11:08:00,895 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 11:08:00,895 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 11:08:00,896 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 11:08:00,914 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 11:08:00,981 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,981 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,985 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,985 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,987 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,987 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,996 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,996 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,996 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,997 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,997 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,997 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:00,998 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:08:01,010 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 11:08:01,202 INFO L208 MainTranslator]: Completed translation [2022-07-12 11:08:01,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:08:01 WrapperNode [2022-07-12 11:08:01,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 11:08:01,203 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 11:08:01,203 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 11:08:01,204 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 11:08:01,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:08:01" (1/1) ... [2022-07-12 11:08:01,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:08:01" (1/1) ... [2022-07-12 11:08:01,366 INFO L137 Inliner]: procedures = 774, calls = 2430, calls flagged for inlining = 67, calls inlined = 13, statements flattened = 800 [2022-07-12 11:08:01,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 11:08:01,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 11:08:01,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 11:08:01,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 11:08:01,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:08:01" (1/1) ... [2022-07-12 11:08:01,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:08:01" (1/1) ... [2022-07-12 11:08:01,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:08:01" (1/1) ... [2022-07-12 11:08:01,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:08:01" (1/1) ... [2022-07-12 11:08:01,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:08:01" (1/1) ... [2022-07-12 11:08:01,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:08:01" (1/1) ... [2022-07-12 11:08:01,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:08:01" (1/1) ... [2022-07-12 11:08:01,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 11:08:01,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 11:08:01,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 11:08:01,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 11:08:01,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:08:01" (1/1) ... [2022-07-12 11:08:01,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 11:08:01,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:08:01,495 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) [2022-07-12 11:08:01,501 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 [2022-07-12 11:08:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-07-12 11:08:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-12 11:08:01,523 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-12 11:08:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 11:08:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-12 11:08:01,524 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-12 11:08:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 11:08:01,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 11:08:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2022-07-12 11:08:01,524 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2022-07-12 11:08:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 11:08:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 11:08:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 11:08:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 11:08:01,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 11:08:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-12 11:08:01,525 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-12 11:08:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 11:08:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-07-12 11:08:01,525 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-07-12 11:08:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 11:08:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-12 11:08:01,526 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-12 11:08:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 11:08:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2022-07-12 11:08:01,526 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2022-07-12 11:08:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure s_update_template_size [2022-07-12 11:08:01,526 INFO L138 BoogieDeclarations]: Found implementation of procedure s_update_template_size [2022-07-12 11:08:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 11:08:01,527 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-07-12 11:08:01,527 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-07-12 11:08:01,527 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_calloc [2022-07-12 11:08:01,527 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_calloc [2022-07-12 11:08:01,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-07-12 11:08:01,527 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2022-07-12 11:08:01,527 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2022-07-12 11:08:01,527 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 11:08:01,528 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 11:08:01,528 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2022-07-12 11:08:01,528 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2022-07-12 11:08:01,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 11:08:01,529 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-12 11:08:01,529 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-12 11:08:01,531 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-12 11:08:01,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-12 11:08:01,531 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-07-12 11:08:01,531 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-07-12 11:08:01,532 INFO L130 BoogieDeclarations]: Found specification of procedure s_alloc_state [2022-07-12 11:08:01,532 INFO L138 BoogieDeclarations]: Found implementation of procedure s_alloc_state [2022-07-12 11:08:01,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 11:08:01,721 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 11:08:01,723 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 11:08:02,473 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !true; [2022-07-12 11:08:02,481 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 11:08:02,490 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 11:08:02,490 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 11:08:02,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 11:08:02 BoogieIcfgContainer [2022-07-12 11:08:02,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 11:08:02,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 11:08:02,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 11:08:02,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 11:08:02,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 11:07:59" (1/3) ... [2022-07-12 11:08:02,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d5927e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 11:08:02, skipping insertion in model container [2022-07-12 11:08:02,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:08:01" (2/3) ... [2022-07-12 11:08:02,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d5927e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 11:08:02, skipping insertion in model container [2022-07-12 11:08:02,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 11:08:02" (3/3) ... [2022-07-12 11:08:02,499 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_init_bounded_harness.i [2022-07-12 11:08:02,511 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 11:08:02,512 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 11:08:02,550 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 11:08:02,554 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@16f82a10, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@37e3f52e [2022-07-12 11:08:02,554 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 11:08:02,557 INFO L276 IsEmpty]: Start isEmpty. Operand has 170 states, 113 states have (on average 1.2123893805309736) internal successors, (137), 113 states have internal predecessors, (137), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-07-12 11:08:02,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-12 11:08:02,564 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:08:02,564 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:08:02,564 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:08:02,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:08:02,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1130665699, now seen corresponding path program 1 times [2022-07-12 11:08:02,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:08:02,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752858290] [2022-07-12 11:08:02,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:08:02,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:08:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:02,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:08:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:02,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 11:08:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:02,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:08:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:02,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:08:02,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:02,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 11:08:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:02,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 11:08:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:02,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 11:08:02,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:02,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:08:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:02,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 11:08:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:03,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 11:08:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:03,023 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 11:08:03,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:08:03,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752858290] [2022-07-12 11:08:03,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752858290] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:08:03,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:08:03,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 11:08:03,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178243807] [2022-07-12 11:08:03,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:08:03,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 11:08:03,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:08:03,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 11:08:03,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 11:08:03,047 INFO L87 Difference]: Start difference. First operand has 170 states, 113 states have (on average 1.2123893805309736) internal successors, (137), 113 states have internal predecessors, (137), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 11:08:03,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:08:03,553 INFO L93 Difference]: Finished difference Result 337 states and 438 transitions. [2022-07-12 11:08:03,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 11:08:03,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 71 [2022-07-12 11:08:03,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:08:03,562 INFO L225 Difference]: With dead ends: 337 [2022-07-12 11:08:03,562 INFO L226 Difference]: Without dead ends: 164 [2022-07-12 11:08:03,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 11:08:03,579 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 42 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 11:08:03,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 256 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 11:08:03,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-07-12 11:08:03,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 161. [2022-07-12 11:08:03,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 104 states have (on average 1.1923076923076923) internal successors, (124), 105 states have internal predecessors, (124), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-07-12 11:08:03,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 199 transitions. [2022-07-12 11:08:03,612 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 199 transitions. Word has length 71 [2022-07-12 11:08:03,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:08:03,613 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 199 transitions. [2022-07-12 11:08:03,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 11:08:03,613 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 199 transitions. [2022-07-12 11:08:03,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-12 11:08:03,615 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:08:03,615 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:08:03,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 11:08:03,616 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:08:03,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:08:03,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1349366569, now seen corresponding path program 1 times [2022-07-12 11:08:03,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:08:03,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675421721] [2022-07-12 11:08:03,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:08:03,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:08:03,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:03,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:08:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:03,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 11:08:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:03,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:08:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:03,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:08:03,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:03,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 11:08:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:03,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 11:08:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:03,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 11:08:03,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:03,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:08:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:03,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 11:08:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:03,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 11:08:03,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:03,879 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 11:08:03,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:08:03,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675421721] [2022-07-12 11:08:03,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675421721] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:08:03,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:08:03,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 11:08:03,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239914747] [2022-07-12 11:08:03,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:08:03,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 11:08:03,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:08:03,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 11:08:03,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:08:03,882 INFO L87 Difference]: Start difference. First operand 161 states and 199 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 11:08:04,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:08:04,263 INFO L93 Difference]: Finished difference Result 304 states and 368 transitions. [2022-07-12 11:08:04,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 11:08:04,263 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 71 [2022-07-12 11:08:04,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:08:04,265 INFO L225 Difference]: With dead ends: 304 [2022-07-12 11:08:04,265 INFO L226 Difference]: Without dead ends: 170 [2022-07-12 11:08:04,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 11:08:04,267 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 47 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 11:08:04,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 494 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 11:08:04,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-07-12 11:08:04,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 163. [2022-07-12 11:08:04,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 106 states have (on average 1.1886792452830188) internal successors, (126), 107 states have internal predecessors, (126), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-07-12 11:08:04,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 201 transitions. [2022-07-12 11:08:04,278 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 201 transitions. Word has length 71 [2022-07-12 11:08:04,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:08:04,278 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 201 transitions. [2022-07-12 11:08:04,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 11:08:04,278 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 201 transitions. [2022-07-12 11:08:04,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-12 11:08:04,280 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:08:04,280 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:08:04,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 11:08:04,281 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:08:04,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:08:04,281 INFO L85 PathProgramCache]: Analyzing trace with hash -721748580, now seen corresponding path program 1 times [2022-07-12 11:08:04,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:08:04,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759344010] [2022-07-12 11:08:04,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:08:04,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:08:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:04,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:08:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:04,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 11:08:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:04,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:08:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:04,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:08:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:04,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 11:08:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:04,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 11:08:04,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:04,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 11:08:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:04,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:08:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:04,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 11:08:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:04,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 11:08:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:04,571 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 11:08:04,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:08:04,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759344010] [2022-07-12 11:08:04,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759344010] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:08:04,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:08:04,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 11:08:04,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515604363] [2022-07-12 11:08:04,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:08:04,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 11:08:04,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:08:04,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 11:08:04,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:08:04,574 INFO L87 Difference]: Start difference. First operand 163 states and 201 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 11:08:04,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:08:04,949 INFO L93 Difference]: Finished difference Result 212 states and 254 transitions. [2022-07-12 11:08:04,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 11:08:04,949 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 73 [2022-07-12 11:08:04,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:08:04,951 INFO L225 Difference]: With dead ends: 212 [2022-07-12 11:08:04,951 INFO L226 Difference]: Without dead ends: 170 [2022-07-12 11:08:04,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:08:04,952 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 42 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 11:08:04,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 491 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 11:08:04,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-07-12 11:08:04,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 167. [2022-07-12 11:08:04,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 109 states have (on average 1.18348623853211) internal successors, (129), 110 states have internal predecessors, (129), 38 states have call successors, (38), 18 states have call predecessors, (38), 19 states have return successors, (38), 38 states have call predecessors, (38), 37 states have call successors, (38) [2022-07-12 11:08:04,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 205 transitions. [2022-07-12 11:08:04,964 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 205 transitions. Word has length 73 [2022-07-12 11:08:04,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:08:04,965 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 205 transitions. [2022-07-12 11:08:04,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 11:08:04,965 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 205 transitions. [2022-07-12 11:08:04,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-12 11:08:04,966 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:08:04,966 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:08:04,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 11:08:04,966 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:08:04,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:08:04,967 INFO L85 PathProgramCache]: Analyzing trace with hash -898091516, now seen corresponding path program 1 times [2022-07-12 11:08:04,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:08:04,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260877515] [2022-07-12 11:08:04,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:08:04,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:08:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:05,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:08:05,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:05,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 11:08:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:05,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:08:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:05,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:08:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:05,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 11:08:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:05,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 11:08:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:05,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 11:08:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:05,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:08:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:05,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 11:08:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:05,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 11:08:05,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:05,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 11:08:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:05,216 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 11:08:05,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:08:05,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260877515] [2022-07-12 11:08:05,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260877515] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:08:05,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:08:05,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 11:08:05,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620812663] [2022-07-12 11:08:05,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:08:05,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 11:08:05,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:08:05,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 11:08:05,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 11:08:05,221 INFO L87 Difference]: Start difference. First operand 167 states and 205 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-12 11:08:05,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:08:05,718 INFO L93 Difference]: Finished difference Result 258 states and 321 transitions. [2022-07-12 11:08:05,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 11:08:05,719 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 78 [2022-07-12 11:08:05,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:08:05,720 INFO L225 Difference]: With dead ends: 258 [2022-07-12 11:08:05,720 INFO L226 Difference]: Without dead ends: 216 [2022-07-12 11:08:05,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-12 11:08:05,721 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 93 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 11:08:05,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 534 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 11:08:05,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-07-12 11:08:05,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 163. [2022-07-12 11:08:05,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 106 states have (on average 1.169811320754717) internal successors, (124), 107 states have internal predecessors, (124), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-07-12 11:08:05,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 199 transitions. [2022-07-12 11:08:05,731 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 199 transitions. Word has length 78 [2022-07-12 11:08:05,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:08:05,732 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 199 transitions. [2022-07-12 11:08:05,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-12 11:08:05,732 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 199 transitions. [2022-07-12 11:08:05,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-12 11:08:05,733 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:08:05,733 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:08:05,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 11:08:05,733 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:08:05,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:08:05,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1146908147, now seen corresponding path program 1 times [2022-07-12 11:08:05,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:08:05,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223037578] [2022-07-12 11:08:05,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:08:05,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:08:05,782 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:08:05,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [590064379] [2022-07-12 11:08:05,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:08:05,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:08:05,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:08:05,784 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) [2022-07-12 11:08:05,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 11:08:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:06,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 2373 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 11:08:06,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:08:06,231 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 11:08:06,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:08:06,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:08:06,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223037578] [2022-07-12 11:08:06,231 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:08:06,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590064379] [2022-07-12 11:08:06,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590064379] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:08:06,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:08:06,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 11:08:06,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440891977] [2022-07-12 11:08:06,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:08:06,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 11:08:06,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:08:06,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 11:08:06,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:08:06,233 INFO L87 Difference]: Start difference. First operand 163 states and 199 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 11:08:06,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:08:06,257 INFO L93 Difference]: Finished difference Result 277 states and 333 transitions. [2022-07-12 11:08:06,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 11:08:06,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 95 [2022-07-12 11:08:06,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:08:06,258 INFO L225 Difference]: With dead ends: 277 [2022-07-12 11:08:06,258 INFO L226 Difference]: Without dead ends: 168 [2022-07-12 11:08:06,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 11:08:06,259 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 2 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:08:06,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 769 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:08:06,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-07-12 11:08:06,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2022-07-12 11:08:06,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 110 states have (on average 1.1636363636363636) internal successors, (128), 111 states have internal predecessors, (128), 38 states have call successors, (38), 18 states have call predecessors, (38), 19 states have return successors, (40), 38 states have call predecessors, (40), 37 states have call successors, (40) [2022-07-12 11:08:06,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 206 transitions. [2022-07-12 11:08:06,267 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 206 transitions. Word has length 95 [2022-07-12 11:08:06,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:08:06,267 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 206 transitions. [2022-07-12 11:08:06,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 11:08:06,267 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 206 transitions. [2022-07-12 11:08:06,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 11:08:06,268 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:08:06,269 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:08:06,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 11:08:06,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:08:06,488 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:08:06,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:08:06,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1882124116, now seen corresponding path program 1 times [2022-07-12 11:08:06,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:08:06,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457949174] [2022-07-12 11:08:06,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:08:06,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:08:06,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:06,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:08:06,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:06,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 11:08:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:06,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:08:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:06,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:08:06,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:06,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 11:08:06,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:06,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 11:08:06,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:06,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 11:08:06,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:06,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:08:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:06,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 11:08:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:06,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 11:08:06,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:06,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:08:06,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:06,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:08:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:06,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:08:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:06,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:08:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:06,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 11:08:06,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:06,886 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 11:08:06,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:08:06,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457949174] [2022-07-12 11:08:06,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457949174] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:08:06,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:08:06,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 11:08:06,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743850746] [2022-07-12 11:08:06,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:08:06,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 11:08:06,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:08:06,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 11:08:06,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-07-12 11:08:06,890 INFO L87 Difference]: Start difference. First operand 168 states and 206 transitions. Second operand has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 11:08:08,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:08:08,770 INFO L93 Difference]: Finished difference Result 264 states and 328 transitions. [2022-07-12 11:08:08,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 11:08:08,770 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 101 [2022-07-12 11:08:08,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:08:08,773 INFO L225 Difference]: With dead ends: 264 [2022-07-12 11:08:08,773 INFO L226 Difference]: Without dead ends: 220 [2022-07-12 11:08:08,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-07-12 11:08:08,774 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 215 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 11:08:08,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 854 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 11:08:08,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-07-12 11:08:08,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 173. [2022-07-12 11:08:08,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 114 states have (on average 1.1666666666666667) internal successors, (133), 116 states have internal predecessors, (133), 38 states have call successors, (38), 18 states have call predecessors, (38), 20 states have return successors, (41), 38 states have call predecessors, (41), 37 states have call successors, (41) [2022-07-12 11:08:08,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 212 transitions. [2022-07-12 11:08:08,783 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 212 transitions. Word has length 101 [2022-07-12 11:08:08,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:08:08,783 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 212 transitions. [2022-07-12 11:08:08,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 11:08:08,783 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 212 transitions. [2022-07-12 11:08:08,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 11:08:08,784 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:08:08,784 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:08:08,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 11:08:08,785 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:08:08,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:08:08,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1489097106, now seen corresponding path program 1 times [2022-07-12 11:08:08,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:08:08,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091722634] [2022-07-12 11:08:08,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:08:08,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:08:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:08,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:08:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:08,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 11:08:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:08,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:08:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:08,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:08:08,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:08,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 11:08:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:08,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 11:08:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:08,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 11:08:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:08,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:08:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:08,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 11:08:08,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:08,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 11:08:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:09,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:08:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:09,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:08:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:09,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:08:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:09,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:08:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:09,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 11:08:09,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:09,113 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 11:08:09,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:08:09,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091722634] [2022-07-12 11:08:09,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091722634] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:08:09,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:08:09,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 11:08:09,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586151855] [2022-07-12 11:08:09,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:08:09,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 11:08:09,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:08:09,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 11:08:09,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 11:08:09,114 INFO L87 Difference]: Start difference. First operand 173 states and 212 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 11:08:09,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:08:09,800 INFO L93 Difference]: Finished difference Result 271 states and 336 transitions. [2022-07-12 11:08:09,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 11:08:09,800 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 101 [2022-07-12 11:08:09,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:08:09,802 INFO L225 Difference]: With dead ends: 271 [2022-07-12 11:08:09,802 INFO L226 Difference]: Without dead ends: 222 [2022-07-12 11:08:09,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-12 11:08:09,803 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 110 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 11:08:09,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 557 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 11:08:09,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-07-12 11:08:09,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 175. [2022-07-12 11:08:09,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 115 states have (on average 1.1652173913043478) internal successors, (134), 117 states have internal predecessors, (134), 39 states have call successors, (39), 18 states have call predecessors, (39), 20 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2022-07-12 11:08:09,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 215 transitions. [2022-07-12 11:08:09,812 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 215 transitions. Word has length 101 [2022-07-12 11:08:09,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:08:09,812 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 215 transitions. [2022-07-12 11:08:09,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 11:08:09,813 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 215 transitions. [2022-07-12 11:08:09,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-12 11:08:09,814 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:08:09,814 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:08:09,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 11:08:09,814 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:08:09,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:08:09,814 INFO L85 PathProgramCache]: Analyzing trace with hash 149844693, now seen corresponding path program 1 times [2022-07-12 11:08:09,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:08:09,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786902684] [2022-07-12 11:08:09,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:08:09,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:08:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:09,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:08:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:09,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 11:08:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:09,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:08:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:09,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:08:09,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:09,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 11:08:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:09,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 11:08:09,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:09,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 11:08:09,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:09,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:08:10,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:10,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 11:08:10,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:10,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 11:08:10,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:10,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:08:10,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:10,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:08:10,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:10,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:08:10,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:10,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:08:10,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:10,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 11:08:10,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:10,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 11:08:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:10,176 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 11:08:10,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:08:10,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786902684] [2022-07-12 11:08:10,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786902684] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:08:10,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:08:10,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 11:08:10,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884574261] [2022-07-12 11:08:10,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:08:10,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 11:08:10,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:08:10,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 11:08:10,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-12 11:08:10,178 INFO L87 Difference]: Start difference. First operand 175 states and 215 transitions. Second operand has 13 states, 12 states have (on average 4.666666666666667) internal successors, (56), 9 states have internal predecessors, (56), 4 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-12 11:08:12,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:08:12,233 INFO L93 Difference]: Finished difference Result 293 states and 372 transitions. [2022-07-12 11:08:12,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 11:08:12,233 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.666666666666667) internal successors, (56), 9 states have internal predecessors, (56), 4 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 107 [2022-07-12 11:08:12,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:08:12,236 INFO L225 Difference]: With dead ends: 293 [2022-07-12 11:08:12,236 INFO L226 Difference]: Without dead ends: 240 [2022-07-12 11:08:12,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-07-12 11:08:12,237 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 115 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-12 11:08:12,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 1182 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-12 11:08:12,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-07-12 11:08:12,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 175. [2022-07-12 11:08:12,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 115 states have (on average 1.1565217391304348) internal successors, (133), 117 states have internal predecessors, (133), 39 states have call successors, (39), 18 states have call predecessors, (39), 20 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2022-07-12 11:08:12,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 214 transitions. [2022-07-12 11:08:12,244 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 214 transitions. Word has length 107 [2022-07-12 11:08:12,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:08:12,245 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 214 transitions. [2022-07-12 11:08:12,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.666666666666667) internal successors, (56), 9 states have internal predecessors, (56), 4 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-12 11:08:12,245 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 214 transitions. [2022-07-12 11:08:12,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-12 11:08:12,246 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:08:12,246 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:08:12,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 11:08:12,246 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:08:12,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:08:12,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1438548646, now seen corresponding path program 1 times [2022-07-12 11:08:12,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:08:12,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105377789] [2022-07-12 11:08:12,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:08:12,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:08:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:12,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:08:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:12,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 11:08:12,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:12,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:08:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:12,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:08:12,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:12,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 11:08:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:12,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 11:08:12,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:12,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 11:08:12,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:12,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:08:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:12,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 11:08:12,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:12,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 11:08:12,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:12,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:08:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:12,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:08:12,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:12,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:08:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:12,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:08:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:12,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 11:08:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:12,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 11:08:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:12,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:08:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:12,649 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 11:08:12,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:08:12,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105377789] [2022-07-12 11:08:12,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105377789] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:08:12,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:08:12,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 11:08:12,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722474759] [2022-07-12 11:08:12,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:08:12,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 11:08:12,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:08:12,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 11:08:12,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-12 11:08:12,651 INFO L87 Difference]: Start difference. First operand 175 states and 214 transitions. Second operand has 13 states, 12 states have (on average 4.916666666666667) internal successors, (59), 9 states have internal predecessors, (59), 4 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-12 11:08:14,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:08:14,814 INFO L93 Difference]: Finished difference Result 280 states and 344 transitions. [2022-07-12 11:08:14,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 11:08:14,814 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.916666666666667) internal successors, (59), 9 states have internal predecessors, (59), 4 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 112 [2022-07-12 11:08:14,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:08:14,816 INFO L225 Difference]: With dead ends: 280 [2022-07-12 11:08:14,816 INFO L226 Difference]: Without dead ends: 222 [2022-07-12 11:08:14,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2022-07-12 11:08:14,817 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 145 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:08:14,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 1056 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-12 11:08:14,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-07-12 11:08:14,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 175. [2022-07-12 11:08:14,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 115 states have (on average 1.1391304347826088) internal successors, (131), 117 states have internal predecessors, (131), 39 states have call successors, (39), 18 states have call predecessors, (39), 20 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2022-07-12 11:08:14,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 212 transitions. [2022-07-12 11:08:14,824 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 212 transitions. Word has length 112 [2022-07-12 11:08:14,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:08:14,824 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 212 transitions. [2022-07-12 11:08:14,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.916666666666667) internal successors, (59), 9 states have internal predecessors, (59), 4 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-12 11:08:14,824 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 212 transitions. [2022-07-12 11:08:14,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-12 11:08:14,825 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:08:14,825 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-07-12 11:08:14,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 11:08:14,826 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:08:14,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:08:14,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1044102274, now seen corresponding path program 1 times [2022-07-12 11:08:14,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:08:14,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180016013] [2022-07-12 11:08:14,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:08:14,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:08:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:15,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:08:15,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180016013] [2022-07-12 11:08:15,019 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-07-12 11:08:15,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252894003] [2022-07-12 11:08:15,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:08:15,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:08:15,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:08:15,021 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) [2022-07-12 11:08:15,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 11:08:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:15,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 2761 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 11:08:15,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:08:15,548 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-12 11:08:15,549 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:08:15,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252894003] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:08:15,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:08:15,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 11:08:15,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418597531] [2022-07-12 11:08:15,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:08:15,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 11:08:15,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:08:15,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 11:08:15,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 11:08:15,550 INFO L87 Difference]: Start difference. First operand 175 states and 212 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-12 11:08:15,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:08:15,562 INFO L93 Difference]: Finished difference Result 294 states and 348 transitions. [2022-07-12 11:08:15,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 11:08:15,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 147 [2022-07-12 11:08:15,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:08:15,563 INFO L225 Difference]: With dead ends: 294 [2022-07-12 11:08:15,563 INFO L226 Difference]: Without dead ends: 175 [2022-07-12 11:08:15,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 11:08:15,564 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 0 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:08:15,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 580 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:08:15,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-07-12 11:08:15,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 170. [2022-07-12 11:08:15,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 111 states have (on average 1.1261261261261262) internal successors, (125), 113 states have internal predecessors, (125), 39 states have call successors, (39), 18 states have call predecessors, (39), 19 states have return successors, (39), 38 states have call predecessors, (39), 38 states have call successors, (39) [2022-07-12 11:08:15,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 203 transitions. [2022-07-12 11:08:15,570 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 203 transitions. Word has length 147 [2022-07-12 11:08:15,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:08:15,570 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 203 transitions. [2022-07-12 11:08:15,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-12 11:08:15,571 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 203 transitions. [2022-07-12 11:08:15,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-12 11:08:15,572 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:08:15,572 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-07-12 11:08:15,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 11:08:15,792 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,SelfDestructingSolverStorable9 [2022-07-12 11:08:15,792 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:08:15,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:08:15,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1263288230, now seen corresponding path program 1 times [2022-07-12 11:08:15,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:08:15,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857431450] [2022-07-12 11:08:15,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:08:15,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:08:15,875 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:08:15,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [690864763] [2022-07-12 11:08:15,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:08:15,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:08:15,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:08:15,892 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) [2022-07-12 11:08:15,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 11:08:16,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:16,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 2866 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 11:08:16,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:08:16,466 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-07-12 11:08:16,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:08:16,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:08:16,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857431450] [2022-07-12 11:08:16,466 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:08:16,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690864763] [2022-07-12 11:08:16,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690864763] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:08:16,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:08:16,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 11:08:16,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042104302] [2022-07-12 11:08:16,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:08:16,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 11:08:16,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:08:16,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 11:08:16,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:08:16,467 INFO L87 Difference]: Start difference. First operand 170 states and 203 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-12 11:08:16,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:08:16,497 INFO L93 Difference]: Finished difference Result 233 states and 275 transitions. [2022-07-12 11:08:16,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 11:08:16,498 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 153 [2022-07-12 11:08:16,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:08:16,499 INFO L225 Difference]: With dead ends: 233 [2022-07-12 11:08:16,499 INFO L226 Difference]: Without dead ends: 175 [2022-07-12 11:08:16,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 11:08:16,500 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 2 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:08:16,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 748 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:08:16,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-07-12 11:08:16,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2022-07-12 11:08:16,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 115 states have (on average 1.1217391304347826) internal successors, (129), 117 states have internal predecessors, (129), 39 states have call successors, (39), 18 states have call predecessors, (39), 20 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2022-07-12 11:08:16,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 210 transitions. [2022-07-12 11:08:16,506 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 210 transitions. Word has length 153 [2022-07-12 11:08:16,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:08:16,507 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 210 transitions. [2022-07-12 11:08:16,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-12 11:08:16,507 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 210 transitions. [2022-07-12 11:08:16,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-12 11:08:16,508 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:08:16,509 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:08:16,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-12 11:08:16,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:08:16,724 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:08:16,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:08:16,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1991721113, now seen corresponding path program 1 times [2022-07-12 11:08:16,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:08:16,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948156665] [2022-07-12 11:08:16,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:08:16,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:08:16,838 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:08:16,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1999622200] [2022-07-12 11:08:16,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:08:16,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:08:16,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:08:16,839 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) [2022-07-12 11:08:16,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 11:08:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:17,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 2870 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 11:08:17,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:08:17,382 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-07-12 11:08:17,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:08:17,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:08:17,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948156665] [2022-07-12 11:08:17,383 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:08:17,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999622200] [2022-07-12 11:08:17,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999622200] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:08:17,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:08:17,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 11:08:17,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36238013] [2022-07-12 11:08:17,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:08:17,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 11:08:17,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:08:17,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 11:08:17,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 11:08:17,387 INFO L87 Difference]: Start difference. First operand 175 states and 210 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-12 11:08:17,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:08:17,555 INFO L93 Difference]: Finished difference Result 233 states and 274 transitions. [2022-07-12 11:08:17,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 11:08:17,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 159 [2022-07-12 11:08:17,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:08:17,557 INFO L225 Difference]: With dead ends: 233 [2022-07-12 11:08:17,557 INFO L226 Difference]: Without dead ends: 175 [2022-07-12 11:08:17,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:08:17,557 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 1 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:08:17,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 570 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 11:08:17,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-07-12 11:08:17,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 170. [2022-07-12 11:08:17,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 111 states have (on average 1.117117117117117) internal successors, (124), 113 states have internal predecessors, (124), 39 states have call successors, (39), 18 states have call predecessors, (39), 19 states have return successors, (39), 38 states have call predecessors, (39), 38 states have call successors, (39) [2022-07-12 11:08:17,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 202 transitions. [2022-07-12 11:08:17,568 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 202 transitions. Word has length 159 [2022-07-12 11:08:17,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:08:17,568 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 202 transitions. [2022-07-12 11:08:17,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-12 11:08:17,569 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 202 transitions. [2022-07-12 11:08:17,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-12 11:08:17,570 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:08:17,570 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:08:17,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 11:08:17,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:08:17,771 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:08:17,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:08:17,771 INFO L85 PathProgramCache]: Analyzing trace with hash -813903192, now seen corresponding path program 1 times [2022-07-12 11:08:17,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:08:17,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020220079] [2022-07-12 11:08:17,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:08:17,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:08:17,833 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:08:17,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1831586848] [2022-07-12 11:08:17,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:08:17,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:08:17,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:08:17,835 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) [2022-07-12 11:08:17,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 11:08:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:18,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 2918 conjuncts, 45 conjunts are in the unsatisfiable core [2022-07-12 11:08:18,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:08:18,507 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-07-12 11:08:18,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:08:18,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:08:18,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020220079] [2022-07-12 11:08:18,508 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:08:18,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831586848] [2022-07-12 11:08:18,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831586848] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:08:18,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:08:18,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 11:08:18,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800887086] [2022-07-12 11:08:18,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:08:18,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 11:08:18,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:08:18,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 11:08:18,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-12 11:08:18,510 INFO L87 Difference]: Start difference. First operand 170 states and 202 transitions. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 9 states have internal predecessors, (81), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-12 11:08:18,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:08:18,865 INFO L93 Difference]: Finished difference Result 237 states and 276 transitions. [2022-07-12 11:08:18,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 11:08:18,865 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 9 states have internal predecessors, (81), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25) Word has length 166 [2022-07-12 11:08:18,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:08:18,866 INFO L225 Difference]: With dead ends: 237 [2022-07-12 11:08:18,866 INFO L226 Difference]: Without dead ends: 168 [2022-07-12 11:08:18,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-07-12 11:08:18,867 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 5 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 11:08:18,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1845 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 11:08:18,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-07-12 11:08:18,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2022-07-12 11:08:18,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 110 states have (on average 1.1) internal successors, (121), 112 states have internal predecessors, (121), 38 states have call successors, (38), 18 states have call predecessors, (38), 19 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2022-07-12 11:08:18,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 197 transitions. [2022-07-12 11:08:18,873 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 197 transitions. Word has length 166 [2022-07-12 11:08:18,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:08:18,874 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 197 transitions. [2022-07-12 11:08:18,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 9 states have internal predecessors, (81), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-12 11:08:18,874 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 197 transitions. [2022-07-12 11:08:18,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-12 11:08:18,875 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:08:18,876 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:08:18,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 11:08:19,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-12 11:08:19,079 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:08:19,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:08:19,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1768858678, now seen corresponding path program 1 times [2022-07-12 11:08:19,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:08:19,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456845371] [2022-07-12 11:08:19,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:08:19,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:08:19,164 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:08:19,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1502127710] [2022-07-12 11:08:19,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:08:19,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:08:19,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:08:19,175 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) [2022-07-12 11:08:19,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 11:08:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:19,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 3100 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 11:08:19,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:08:19,961 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-07-12 11:08:19,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:08:19,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:08:19,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456845371] [2022-07-12 11:08:19,975 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:08:19,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502127710] [2022-07-12 11:08:19,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502127710] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:08:19,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:08:19,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 11:08:19,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542409425] [2022-07-12 11:08:19,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:08:19,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 11:08:19,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:08:19,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 11:08:19,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 11:08:19,977 INFO L87 Difference]: Start difference. First operand 168 states and 197 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-12 11:08:20,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:08:20,002 INFO L93 Difference]: Finished difference Result 324 states and 374 transitions. [2022-07-12 11:08:20,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 11:08:20,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 191 [2022-07-12 11:08:20,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:08:20,004 INFO L225 Difference]: With dead ends: 324 [2022-07-12 11:08:20,004 INFO L226 Difference]: Without dead ends: 177 [2022-07-12 11:08:20,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:08:20,005 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 15 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:08:20,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 555 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:08:20,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-07-12 11:08:20,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 171. [2022-07-12 11:08:20,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 113 states have (on average 1.0973451327433628) internal successors, (124), 115 states have internal predecessors, (124), 38 states have call successors, (38), 18 states have call predecessors, (38), 19 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2022-07-12 11:08:20,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 200 transitions. [2022-07-12 11:08:20,025 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 200 transitions. Word has length 191 [2022-07-12 11:08:20,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:08:20,025 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 200 transitions. [2022-07-12 11:08:20,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-12 11:08:20,026 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 200 transitions. [2022-07-12 11:08:20,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-12 11:08:20,028 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:08:20,028 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:08:20,051 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-12 11:08:20,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:08:20,250 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:08:20,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:08:20,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1342304180, now seen corresponding path program 1 times [2022-07-12 11:08:20,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:08:20,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279916283] [2022-07-12 11:08:20,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:08:20,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:08:20,344 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:08:20,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [24728984] [2022-07-12 11:08:20,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:08:20,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:08:20,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:08:20,360 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) [2022-07-12 11:08:20,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 11:08:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:20,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 3098 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-12 11:08:20,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:08:21,024 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-07-12 11:08:21,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:08:21,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:08:21,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279916283] [2022-07-12 11:08:21,024 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:08:21,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24728984] [2022-07-12 11:08:21,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24728984] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:08:21,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:08:21,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 11:08:21,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933982614] [2022-07-12 11:08:21,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:08:21,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 11:08:21,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:08:21,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 11:08:21,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:08:21,027 INFO L87 Difference]: Start difference. First operand 171 states and 200 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-12 11:08:21,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:08:21,080 INFO L93 Difference]: Finished difference Result 324 states and 371 transitions. [2022-07-12 11:08:21,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 11:08:21,081 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 191 [2022-07-12 11:08:21,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:08:21,082 INFO L225 Difference]: With dead ends: 324 [2022-07-12 11:08:21,082 INFO L226 Difference]: Without dead ends: 181 [2022-07-12 11:08:21,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-12 11:08:21,086 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 22 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:08:21,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 726 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:08:21,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-07-12 11:08:21,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 171. [2022-07-12 11:08:21,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 113 states have (on average 1.0884955752212389) internal successors, (123), 115 states have internal predecessors, (123), 38 states have call successors, (38), 18 states have call predecessors, (38), 19 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2022-07-12 11:08:21,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 199 transitions. [2022-07-12 11:08:21,112 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 199 transitions. Word has length 191 [2022-07-12 11:08:21,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:08:21,113 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 199 transitions. [2022-07-12 11:08:21,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-12 11:08:21,113 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 199 transitions. [2022-07-12 11:08:21,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-07-12 11:08:21,118 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:08:21,119 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:08:21,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 11:08:21,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:08:21,342 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:08:21,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:08:21,342 INFO L85 PathProgramCache]: Analyzing trace with hash 538724999, now seen corresponding path program 1 times [2022-07-12 11:08:21,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:08:21,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83963560] [2022-07-12 11:08:21,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:08:21,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:08:21,427 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:08:21,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [621246916] [2022-07-12 11:08:21,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:08:21,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:08:21,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:08:21,444 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) [2022-07-12 11:08:21,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 11:08:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:08:26,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 3102 conjuncts, 288 conjunts are in the unsatisfiable core [2022-07-12 11:08:26,331 INFO L286 TraceCheckSpWp]: Computing forward predicates...