./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_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 71774aeec0d0f8840a1b18b633767b26c38c9eb9d26569d28cdf01c44c9881ac --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 09:48:02,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 09:48:02,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 09:48:02,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 09:48:02,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 09:48:02,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 09:48:02,808 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 09:48:02,810 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 09:48:02,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 09:48:02,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 09:48:02,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 09:48:02,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 09:48:02,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 09:48:02,830 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 09:48:02,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 09:48:02,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 09:48:02,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 09:48:02,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 09:48:02,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 09:48:02,844 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 09:48:02,846 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 09:48:02,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 09:48:02,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 09:48:02,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 09:48:02,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 09:48:02,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 09:48:02,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 09:48:02,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 09:48:02,859 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 09:48:02,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 09:48:02,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 09:48:02,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 09:48:02,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 09:48:02,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 09:48:02,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 09:48:02,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 09:48:02,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 09:48:02,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 09:48:02,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 09:48:02,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 09:48:02,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 09:48:02,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 09:48:02,873 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 09:48:02,904 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 09:48:02,904 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 09:48:02,904 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 09:48:02,905 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 09:48:02,905 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 09:48:02,906 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 09:48:02,906 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 09:48:02,906 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 09:48:02,907 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 09:48:02,907 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 09:48:02,908 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 09:48:02,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 09:48:02,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 09:48:02,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 09:48:02,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 09:48:02,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 09:48:02,909 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 09:48:02,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 09:48:02,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 09:48:02,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 09:48:02,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 09:48:02,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:48:02,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 09:48:02,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 09:48:02,911 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 09:48:02,911 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 09:48:02,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 09:48:02,911 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 09:48:02,911 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 09:48:02,912 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 09:48:02,912 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71774aeec0d0f8840a1b18b633767b26c38c9eb9d26569d28cdf01c44c9881ac [2022-07-21 09:48:03,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 09:48:03,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 09:48:03,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 09:48:03,241 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 09:48:03,243 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 09:48:03,244 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i [2022-07-21 09:48:03,290 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f89f915d0/9bf35fb009724bcaa16d8cf4b9f1486f/FLAG78eda335d [2022-07-21 09:48:03,894 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 09:48:03,894 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i [2022-07-21 09:48:03,925 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f89f915d0/9bf35fb009724bcaa16d8cf4b9f1486f/FLAG78eda335d [2022-07-21 09:48:04,102 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f89f915d0/9bf35fb009724bcaa16d8cf4b9f1486f [2022-07-21 09:48:04,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 09:48:04,106 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 09:48:04,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 09:48:04,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 09:48:04,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 09:48:04,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:48:04" (1/1) ... [2022-07-21 09:48:04,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c7e4ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:48:04, skipping insertion in model container [2022-07-21 09:48:04,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:48:04" (1/1) ... [2022-07-21 09:48:04,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 09:48:04,218 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 09:48:04,468 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_priority_queue_pop_harness.i[4496,4509] [2022-07-21 09:48:04,473 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_priority_queue_pop_harness.i[4556,4569] [2022-07-21 09:48:05,231 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,234 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,234 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,235 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,236 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,246 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,248 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,250 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,252 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,254 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,256 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,256 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,256 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,509 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:48:05,511 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:48:05,512 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:48:05,513 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:48:05,514 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:48:05,514 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:48:05,515 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:48:05,515 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:48:05,519 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:48:05,521 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:48:05,616 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:48:05,634 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,647 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,696 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,697 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,697 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,697 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,698 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,698 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,698 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,699 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,699 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,699 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,700 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,700 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,700 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,702 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,703 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,703 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,703 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,706 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,707 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,712 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,716 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,716 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:48:05,767 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 09:48:05,781 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_priority_queue_pop_harness.i[4496,4509] [2022-07-21 09:48:05,782 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_priority_queue_pop_harness.i[4556,4569] [2022-07-21 09:48:05,835 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,836 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,836 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,836 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,837 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,850 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,850 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,851 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,852 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,853 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,853 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,854 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,854 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,895 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:48:05,899 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:48:05,900 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:48:05,900 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:48:05,901 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:48:05,901 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:48:05,902 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:48:05,902 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:48:05,903 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:48:05,903 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:48:05,937 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:48:05,949 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,970 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:05,996 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:06,000 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:06,000 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:06,000 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:06,000 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:06,002 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:06,003 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:06,003 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:06,004 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:06,004 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:06,004 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:06,005 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:06,005 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:06,006 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:06,007 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:06,007 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:06,008 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:06,009 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:06,011 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:06,016 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:06,017 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:06,017 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:48:06,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:48:06,255 INFO L208 MainTranslator]: Completed translation [2022-07-21 09:48:06,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:48:06 WrapperNode [2022-07-21 09:48:06,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 09:48:06,256 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 09:48:06,257 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 09:48:06,257 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 09:48:06,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:48:06" (1/1) ... [2022-07-21 09:48:06,359 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:48:06" (1/1) ... [2022-07-21 09:48:06,490 INFO L137 Inliner]: procedures = 697, calls = 1918, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 1033 [2022-07-21 09:48:06,490 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 09:48:06,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 09:48:06,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 09:48:06,491 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 09:48:06,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:48:06" (1/1) ... [2022-07-21 09:48:06,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:48:06" (1/1) ... [2022-07-21 09:48:06,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:48:06" (1/1) ... [2022-07-21 09:48:06,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:48:06" (1/1) ... [2022-07-21 09:48:06,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:48:06" (1/1) ... [2022-07-21 09:48:06,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:48:06" (1/1) ... [2022-07-21 09:48:06,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:48:06" (1/1) ... [2022-07-21 09:48:06,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 09:48:06,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 09:48:06,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 09:48:06,630 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 09:48:06,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:48:06" (1/1) ... [2022-07-21 09:48:06,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:48:06,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:48:06,656 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 09:48:06,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 09:48:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2022-07-21 09:48:06,696 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2022-07-21 09:48:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-07-21 09:48:06,696 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-07-21 09:48:06,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 09:48:06,697 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-07-21 09:48:06,697 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-07-21 09:48:06,697 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-21 09:48:06,697 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-21 09:48:06,697 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-21 09:48:06,697 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-21 09:48:06,697 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2022-07-21 09:48:06,698 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2022-07-21 09:48:06,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-21 09:48:06,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 09:48:06,698 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-21 09:48:06,698 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-21 09:48:06,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 09:48:06,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 09:48:06,699 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2022-07-21 09:48:06,700 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2022-07-21 09:48:06,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 09:48:06,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 09:48:06,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 09:48:06,703 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2022-07-21 09:48:06,703 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2022-07-21 09:48:06,703 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-07-21 09:48:06,704 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-07-21 09:48:06,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 09:48:06,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 09:48:06,708 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-21 09:48:06,708 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-21 09:48:06,708 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-21 09:48:06,708 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-21 09:48:06,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-21 09:48:06,709 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-07-21 09:48:06,709 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-07-21 09:48:06,709 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-07-21 09:48:06,709 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-07-21 09:48:06,709 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-07-21 09:48:06,709 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-07-21 09:48:06,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-21 09:48:06,710 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-21 09:48:06,710 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 09:48:06,710 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 09:48:06,710 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-07-21 09:48:06,710 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-07-21 09:48:06,710 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2022-07-21 09:48:06,710 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2022-07-21 09:48:06,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 09:48:06,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 09:48:06,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 09:48:06,711 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2022-07-21 09:48:06,711 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2022-07-21 09:48:06,711 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-21 09:48:06,711 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-21 09:48:06,711 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-21 09:48:06,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-21 09:48:06,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 09:48:06,712 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-07-21 09:48:06,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-07-21 09:48:06,712 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2022-07-21 09:48:06,712 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2022-07-21 09:48:06,712 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-21 09:48:06,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-21 09:48:06,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 09:48:06,713 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2022-07-21 09:48:06,713 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2022-07-21 09:48:07,067 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 09:48:07,069 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 09:48:08,736 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 09:48:08,745 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 09:48:08,746 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-21 09:48:08,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:48:08 BoogieIcfgContainer [2022-07-21 09:48:08,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 09:48:08,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 09:48:08,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 09:48:08,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 09:48:08,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:48:04" (1/3) ... [2022-07-21 09:48:08,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f7964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:48:08, skipping insertion in model container [2022-07-21 09:48:08,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:48:06" (2/3) ... [2022-07-21 09:48:08,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f7964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:48:08, skipping insertion in model container [2022-07-21 09:48:08,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:48:08" (3/3) ... [2022-07-21 09:48:08,754 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_pop_harness.i [2022-07-21 09:48:08,764 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 09:48:08,765 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 09:48:08,811 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 09:48:08,816 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@505323d3, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2a42ef4d [2022-07-21 09:48:08,816 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 09:48:08,821 INFO L276 IsEmpty]: Start isEmpty. Operand has 448 states, 263 states have (on average 1.2623574144486691) internal successors, (332), 266 states have internal predecessors, (332), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) [2022-07-21 09:48:08,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-21 09:48:08,835 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:48:08,836 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:48:08,836 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:48:08,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:48:08,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1140837343, now seen corresponding path program 1 times [2022-07-21 09:48:08,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:48:08,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590574555] [2022-07-21 09:48:08,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:08,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:48:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:09,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:48:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:09,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:48:09,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:09,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 09:48:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:09,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 09:48:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:09,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:48:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:09,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:48:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:09,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 09:48:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:09,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:48:09,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:09,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:48:09,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:09,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 09:48:09,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:09,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 09:48:09,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:09,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 09:48:09,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:09,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:48:09,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:09,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 09:48:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:09,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 09:48:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:09,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 09:48:09,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:09,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 09:48:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:09,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 09:48:09,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:09,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 09:48:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:09,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-21 09:48:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:09,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-21 09:48:09,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:09,563 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-07-21 09:48:09,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:48:09,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590574555] [2022-07-21 09:48:09,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590574555] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:48:09,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:48:09,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:48:09,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215206699] [2022-07-21 09:48:09,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:48:09,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:48:09,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:48:09,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:48:09,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:48:09,604 INFO L87 Difference]: Start difference. First operand has 448 states, 263 states have (on average 1.2623574144486691) internal successors, (332), 266 states have internal predecessors, (332), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 09:48:11,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:48:11,234 INFO L93 Difference]: Finished difference Result 1063 states and 1806 transitions. [2022-07-21 09:48:11,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:48:11,237 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 133 [2022-07-21 09:48:11,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:48:11,252 INFO L225 Difference]: With dead ends: 1063 [2022-07-21 09:48:11,252 INFO L226 Difference]: Without dead ends: 621 [2022-07-21 09:48:11,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:48:11,262 INFO L413 NwaCegarLoop]: 691 mSDtfsCounter, 465 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 768 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 768 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 09:48:11,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 965 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [768 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 09:48:11,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2022-07-21 09:48:11,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 441. [2022-07-21 09:48:11,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 257 states have (on average 1.2373540856031129) internal successors, (318), 260 states have internal predecessors, (318), 156 states have call successors, (156), 27 states have call predecessors, (156), 26 states have return successors, (154), 154 states have call predecessors, (154), 154 states have call successors, (154) [2022-07-21 09:48:11,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 628 transitions. [2022-07-21 09:48:11,346 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 628 transitions. Word has length 133 [2022-07-21 09:48:11,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:48:11,347 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 628 transitions. [2022-07-21 09:48:11,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 09:48:11,347 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 628 transitions. [2022-07-21 09:48:11,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-21 09:48:11,350 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:48:11,350 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:48:11,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 09:48:11,351 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:48:11,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:48:11,355 INFO L85 PathProgramCache]: Analyzing trace with hash 826891299, now seen corresponding path program 1 times [2022-07-21 09:48:11,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:48:11,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375370585] [2022-07-21 09:48:11,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:11,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:48:11,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:11,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:48:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:11,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:48:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:11,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 09:48:11,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:11,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 09:48:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:11,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:48:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:11,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:48:11,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:11,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 09:48:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:11,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:48:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:11,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:48:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:11,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 09:48:11,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:11,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 09:48:11,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:11,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 09:48:11,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:11,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:48:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:11,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 09:48:11,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:11,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 09:48:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:11,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 09:48:11,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:11,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 09:48:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:11,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 09:48:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:11,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 09:48:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:11,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-21 09:48:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:11,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-21 09:48:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:11,809 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-07-21 09:48:11,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:48:11,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375370585] [2022-07-21 09:48:11,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375370585] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:48:11,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389441551] [2022-07-21 09:48:11,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:11,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:11,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:48:11,815 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:48:11,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 09:48:12,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:12,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 2444 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 09:48:12,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:48:12,483 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-07-21 09:48:12,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:48:12,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389441551] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:48:12,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:48:12,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-21 09:48:12,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239569402] [2022-07-21 09:48:12,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:48:12,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:48:12,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:48:12,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:48:12,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-21 09:48:12,487 INFO L87 Difference]: Start difference. First operand 441 states and 628 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-21 09:48:14,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:48:14,003 INFO L93 Difference]: Finished difference Result 848 states and 1225 transitions. [2022-07-21 09:48:14,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:48:14,004 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 133 [2022-07-21 09:48:14,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:48:14,008 INFO L225 Difference]: With dead ends: 848 [2022-07-21 09:48:14,008 INFO L226 Difference]: Without dead ends: 443 [2022-07-21 09:48:14,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-07-21 09:48:14,011 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 643 mSDsluCounter, 1621 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 2189 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 09:48:14,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 2189 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 09:48:14,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-07-21 09:48:14,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2022-07-21 09:48:14,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 258 states have (on average 1.2364341085271318) internal successors, (319), 262 states have internal predecessors, (319), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (167), 154 states have call predecessors, (167), 154 states have call successors, (167) [2022-07-21 09:48:14,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 642 transitions. [2022-07-21 09:48:14,043 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 642 transitions. Word has length 133 [2022-07-21 09:48:14,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:48:14,043 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 642 transitions. [2022-07-21 09:48:14,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-21 09:48:14,044 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 642 transitions. [2022-07-21 09:48:14,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-21 09:48:14,046 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:48:14,046 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:48:14,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 09:48:14,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:14,272 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:48:14,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:48:14,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1886231881, now seen corresponding path program 1 times [2022-07-21 09:48:14,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:48:14,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752033315] [2022-07-21 09:48:14,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:14,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:48:14,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:14,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:48:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:14,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:48:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:14,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 09:48:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:14,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 09:48:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:14,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:48:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:14,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:48:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:14,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 09:48:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:14,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:48:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:14,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:48:14,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:14,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 09:48:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:14,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:48:14,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:14,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 09:48:14,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:14,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 09:48:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:14,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:48:14,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:14,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-21 09:48:14,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:14,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 09:48:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:14,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 09:48:14,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:14,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 09:48:14,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:14,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 09:48:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:14,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 09:48:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:14,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 09:48:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:14,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 09:48:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:14,684 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-07-21 09:48:14,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:48:14,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752033315] [2022-07-21 09:48:14,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752033315] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:48:14,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135304092] [2022-07-21 09:48:14,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:14,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:14,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:48:14,688 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:48:14,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 09:48:15,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:15,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 2494 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 09:48:15,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:48:15,324 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-07-21 09:48:15,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:48:15,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135304092] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:48:15,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:48:15,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-07-21 09:48:15,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373766310] [2022-07-21 09:48:15,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:48:15,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:48:15,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:48:15,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:48:15,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-07-21 09:48:15,327 INFO L87 Difference]: Start difference. First operand 443 states and 642 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-21 09:48:17,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:48:17,632 INFO L93 Difference]: Finished difference Result 871 states and 1296 transitions. [2022-07-21 09:48:17,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:48:17,633 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 141 [2022-07-21 09:48:17,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:48:17,636 INFO L225 Difference]: With dead ends: 871 [2022-07-21 09:48:17,637 INFO L226 Difference]: Without dead ends: 464 [2022-07-21 09:48:17,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2022-07-21 09:48:17,640 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 667 mSDsluCounter, 2664 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 3229 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:48:17,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 3229 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-21 09:48:17,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2022-07-21 09:48:17,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 462. [2022-07-21 09:48:17,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 274 states have (on average 1.2445255474452555) internal successors, (341), 278 states have internal predecessors, (341), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (186), 157 states have call predecessors, (186), 156 states have call successors, (186) [2022-07-21 09:48:17,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 685 transitions. [2022-07-21 09:48:17,691 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 685 transitions. Word has length 141 [2022-07-21 09:48:17,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:48:17,691 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 685 transitions. [2022-07-21 09:48:17,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-21 09:48:17,692 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 685 transitions. [2022-07-21 09:48:17,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 09:48:17,693 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:48:17,694 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:48:17,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 09:48:17,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-21 09:48:17,907 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:48:17,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:48:17,908 INFO L85 PathProgramCache]: Analyzing trace with hash -523305437, now seen corresponding path program 1 times [2022-07-21 09:48:17,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:48:17,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437492917] [2022-07-21 09:48:17,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:17,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:48:18,008 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:48:18,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [725453036] [2022-07-21 09:48:18,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:18,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:18,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:48:18,012 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:48:18,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 09:48:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:18,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 2635 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 09:48:18,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:48:18,585 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-07-21 09:48:18,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:48:18,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:48:18,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437492917] [2022-07-21 09:48:18,586 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:48:18,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725453036] [2022-07-21 09:48:18,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725453036] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:48:18,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:48:18,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 09:48:18,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206130593] [2022-07-21 09:48:18,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:48:18,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:48:18,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:48:18,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:48:18,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:48:18,588 INFO L87 Difference]: Start difference. First operand 462 states and 685 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2022-07-21 09:48:20,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:48:20,006 INFO L93 Difference]: Finished difference Result 896 states and 1369 transitions. [2022-07-21 09:48:20,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:48:20,007 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 156 [2022-07-21 09:48:20,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:48:20,011 INFO L225 Difference]: With dead ends: 896 [2022-07-21 09:48:20,011 INFO L226 Difference]: Without dead ends: 470 [2022-07-21 09:48:20,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-07-21 09:48:20,014 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 667 mSDsluCounter, 2131 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 2693 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 09:48:20,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 2693 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 09:48:20,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2022-07-21 09:48:20,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 462. [2022-07-21 09:48:20,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 274 states have (on average 1.2445255474452555) internal successors, (341), 278 states have internal predecessors, (341), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (186), 157 states have call predecessors, (186), 156 states have call successors, (186) [2022-07-21 09:48:20,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 685 transitions. [2022-07-21 09:48:20,040 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 685 transitions. Word has length 156 [2022-07-21 09:48:20,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:48:20,041 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 685 transitions. [2022-07-21 09:48:20,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2022-07-21 09:48:20,041 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 685 transitions. [2022-07-21 09:48:20,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-07-21 09:48:20,043 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:48:20,043 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:48:20,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 09:48:20,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:20,260 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:48:20,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:48:20,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1664024204, now seen corresponding path program 1 times [2022-07-21 09:48:20,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:48:20,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261687304] [2022-07-21 09:48:20,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:20,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:48:20,340 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:48:20,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1509702439] [2022-07-21 09:48:20,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:20,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:20,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:48:20,343 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:48:20,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 09:48:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:20,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 2707 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 09:48:20,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:48:20,997 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-21 09:48:20,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:48:20,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:48:20,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261687304] [2022-07-21 09:48:20,998 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:48:20,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509702439] [2022-07-21 09:48:20,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509702439] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:48:20,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:48:20,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 09:48:20,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460206855] [2022-07-21 09:48:20,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:48:20,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 09:48:20,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:48:21,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 09:48:21,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 09:48:21,000 INFO L87 Difference]: Start difference. First operand 462 states and 685 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2022-07-21 09:48:23,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:48:23,565 INFO L93 Difference]: Finished difference Result 906 states and 1373 transitions. [2022-07-21 09:48:23,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 09:48:23,566 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) Word has length 172 [2022-07-21 09:48:23,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:48:23,570 INFO L225 Difference]: With dead ends: 906 [2022-07-21 09:48:23,570 INFO L226 Difference]: Without dead ends: 480 [2022-07-21 09:48:23,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-07-21 09:48:23,574 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 732 mSDsluCounter, 3083 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 3624 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-21 09:48:23,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 3624 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-21 09:48:23,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-07-21 09:48:23,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 462. [2022-07-21 09:48:23,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 274 states have (on average 1.2445255474452555) internal successors, (341), 278 states have internal predecessors, (341), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (186), 157 states have call predecessors, (186), 156 states have call successors, (186) [2022-07-21 09:48:23,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 685 transitions. [2022-07-21 09:48:23,598 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 685 transitions. Word has length 172 [2022-07-21 09:48:23,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:48:23,598 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 685 transitions. [2022-07-21 09:48:23,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2022-07-21 09:48:23,599 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 685 transitions. [2022-07-21 09:48:23,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-07-21 09:48:23,602 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:48:23,602 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:48:23,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-21 09:48:23,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:23,815 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:48:23,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:48:23,816 INFO L85 PathProgramCache]: Analyzing trace with hash -294824304, now seen corresponding path program 2 times [2022-07-21 09:48:23,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:48:23,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143578610] [2022-07-21 09:48:23,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:23,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:48:23,902 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:48:23,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1041202628] [2022-07-21 09:48:23,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:48:23,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:23,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:48:23,905 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:48:23,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 09:48:24,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:48:24,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:48:24,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 2848 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 09:48:24,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:48:24,614 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-07-21 09:48:24,614 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:48:24,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:48:24,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143578610] [2022-07-21 09:48:24,615 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:48:24,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041202628] [2022-07-21 09:48:24,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041202628] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:48:24,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:48:24,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 09:48:24,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363744060] [2022-07-21 09:48:24,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:48:24,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:48:24,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:48:24,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:48:24,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:48:24,617 INFO L87 Difference]: Start difference. First operand 462 states and 685 transitions. Second operand has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-21 09:48:26,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:48:26,204 INFO L93 Difference]: Finished difference Result 858 states and 1293 transitions. [2022-07-21 09:48:26,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:48:26,204 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 187 [2022-07-21 09:48:26,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:48:26,208 INFO L225 Difference]: With dead ends: 858 [2022-07-21 09:48:26,208 INFO L226 Difference]: Without dead ends: 464 [2022-07-21 09:48:26,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:48:26,212 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 655 mSDsluCounter, 2158 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 2725 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 09:48:26,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [677 Valid, 2725 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 09:48:26,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2022-07-21 09:48:26,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2022-07-21 09:48:26,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 275 states have (on average 1.2436363636363637) internal successors, (342), 280 states have internal predecessors, (342), 158 states have call successors, (158), 27 states have call predecessors, (158), 29 states have return successors, (197), 157 states have call predecessors, (197), 156 states have call successors, (197) [2022-07-21 09:48:26,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 697 transitions. [2022-07-21 09:48:26,235 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 697 transitions. Word has length 187 [2022-07-21 09:48:26,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:48:26,235 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 697 transitions. [2022-07-21 09:48:26,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-21 09:48:26,236 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 697 transitions. [2022-07-21 09:48:26,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-07-21 09:48:26,238 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:48:26,238 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:48:26,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-21 09:48:26,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:26,464 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:48:26,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:48:26,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1770519646, now seen corresponding path program 1 times [2022-07-21 09:48:26,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:48:26,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390283601] [2022-07-21 09:48:26,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:26,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:48:26,552 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:48:26,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1575319416] [2022-07-21 09:48:26,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:26,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:26,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:48:26,555 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:48:26,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 09:48:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:27,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 3039 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 09:48:27,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:48:27,231 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-07-21 09:48:27,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:48:27,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:48:27,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390283601] [2022-07-21 09:48:27,232 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:48:27,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575319416] [2022-07-21 09:48:27,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575319416] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:48:27,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:48:27,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 09:48:27,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015973707] [2022-07-21 09:48:27,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:48:27,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:48:27,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:48:27,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:48:27,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:48:27,234 INFO L87 Difference]: Start difference. First operand 464 states and 697 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) [2022-07-21 09:48:30,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:48:30,242 INFO L93 Difference]: Finished difference Result 863 states and 1318 transitions. [2022-07-21 09:48:30,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:48:30,243 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) Word has length 210 [2022-07-21 09:48:30,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:48:30,246 INFO L225 Difference]: With dead ends: 863 [2022-07-21 09:48:30,246 INFO L226 Difference]: Without dead ends: 467 [2022-07-21 09:48:30,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-07-21 09:48:30,249 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 679 mSDsluCounter, 2657 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 3218 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-21 09:48:30,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 3218 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-21 09:48:30,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-07-21 09:48:30,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 465. [2022-07-21 09:48:30,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 276 states have (on average 1.2427536231884058) internal successors, (343), 281 states have internal predecessors, (343), 158 states have call successors, (158), 27 states have call predecessors, (158), 29 states have return successors, (197), 157 states have call predecessors, (197), 156 states have call successors, (197) [2022-07-21 09:48:30,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 698 transitions. [2022-07-21 09:48:30,272 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 698 transitions. Word has length 210 [2022-07-21 09:48:30,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:48:30,272 INFO L495 AbstractCegarLoop]: Abstraction has 465 states and 698 transitions. [2022-07-21 09:48:30,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) [2022-07-21 09:48:30,273 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 698 transitions. [2022-07-21 09:48:30,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-07-21 09:48:30,296 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:48:30,296 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:48:30,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 09:48:30,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:30,513 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:48:30,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:48:30,513 INFO L85 PathProgramCache]: Analyzing trace with hash -236319775, now seen corresponding path program 1 times [2022-07-21 09:48:30,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:48:30,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915366348] [2022-07-21 09:48:30,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:30,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:48:30,582 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:48:30,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [588884058] [2022-07-21 09:48:30,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:30,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:30,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:48:30,585 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:48:30,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 09:48:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:31,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 2970 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 09:48:31,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:48:31,244 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 137 proven. 3 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-07-21 09:48:31,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:48:31,528 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-07-21 09:48:31,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:48:31,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915366348] [2022-07-21 09:48:31,528 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:48:31,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588884058] [2022-07-21 09:48:31,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588884058] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:48:31,529 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:48:31,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-07-21 09:48:31,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892278827] [2022-07-21 09:48:31,529 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:48:31,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 09:48:31,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:48:31,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 09:48:31,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-21 09:48:31,531 INFO L87 Difference]: Start difference. First operand 465 states and 698 transitions. Second operand has 14 states, 12 states have (on average 9.916666666666666) internal successors, (119), 14 states have internal predecessors, (119), 9 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (42), 5 states have call predecessors, (42), 9 states have call successors, (42) [2022-07-21 09:48:35,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:48:35,723 INFO L93 Difference]: Finished difference Result 881 states and 1352 transitions. [2022-07-21 09:48:35,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:48:35,723 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 9.916666666666666) internal successors, (119), 14 states have internal predecessors, (119), 9 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (42), 5 states have call predecessors, (42), 9 states have call successors, (42) Word has length 211 [2022-07-21 09:48:35,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:48:35,727 INFO L225 Difference]: With dead ends: 881 [2022-07-21 09:48:35,727 INFO L226 Difference]: Without dead ends: 484 [2022-07-21 09:48:35,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-07-21 09:48:35,731 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 1085 mSDsluCounter, 4137 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 4683 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:48:35,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 4683 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-07-21 09:48:35,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-07-21 09:48:35,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 478. [2022-07-21 09:48:35,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 288 states have (on average 1.25) internal successors, (360), 292 states have internal predecessors, (360), 159 states have call successors, (159), 27 states have call predecessors, (159), 29 states have return successors, (198), 159 states have call predecessors, (198), 157 states have call successors, (198) [2022-07-21 09:48:35,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 717 transitions. [2022-07-21 09:48:35,757 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 717 transitions. Word has length 211 [2022-07-21 09:48:35,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:48:35,757 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 717 transitions. [2022-07-21 09:48:35,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 9.916666666666666) internal successors, (119), 14 states have internal predecessors, (119), 9 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (42), 5 states have call predecessors, (42), 9 states have call successors, (42) [2022-07-21 09:48:35,758 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 717 transitions. [2022-07-21 09:48:35,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-21 09:48:35,760 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:48:35,760 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:48:35,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 09:48:35,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:35,988 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:48:35,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:48:35,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1051846891, now seen corresponding path program 2 times [2022-07-21 09:48:35,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:48:35,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186087120] [2022-07-21 09:48:35,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:35,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:48:36,074 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:48:36,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2097826996] [2022-07-21 09:48:36,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:48:36,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:36,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:48:36,076 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:48:36,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 09:48:37,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:48:37,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:48:37,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 3111 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 09:48:37,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:48:37,205 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-07-21 09:48:37,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:48:37,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:48:37,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186087120] [2022-07-21 09:48:37,206 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:48:37,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097826996] [2022-07-21 09:48:37,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097826996] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:48:37,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:48:37,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:48:37,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753925281] [2022-07-21 09:48:37,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:48:37,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:48:37,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:48:37,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:48:37,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:48:37,208 INFO L87 Difference]: Start difference. First operand 478 states and 717 transitions. Second operand has 10 states, 9 states have (on average 11.11111111111111) internal successors, (100), 10 states have internal predecessors, (100), 6 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2022-07-21 09:48:41,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:48:41,063 INFO L93 Difference]: Finished difference Result 890 states and 1355 transitions. [2022-07-21 09:48:41,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 09:48:41,064 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 11.11111111111111) internal successors, (100), 10 states have internal predecessors, (100), 6 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) Word has length 226 [2022-07-21 09:48:41,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:48:41,068 INFO L225 Difference]: With dead ends: 890 [2022-07-21 09:48:41,068 INFO L226 Difference]: Without dead ends: 480 [2022-07-21 09:48:41,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-07-21 09:48:41,074 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 744 mSDsluCounter, 3578 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 4118 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-21 09:48:41,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 4118 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-07-21 09:48:41,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-07-21 09:48:41,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 462. [2022-07-21 09:48:41,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 274 states have (on average 1.2445255474452555) internal successors, (341), 278 states have internal predecessors, (341), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (184), 157 states have call predecessors, (184), 156 states have call successors, (184) [2022-07-21 09:48:41,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 683 transitions. [2022-07-21 09:48:41,095 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 683 transitions. Word has length 226 [2022-07-21 09:48:41,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:48:41,095 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 683 transitions. [2022-07-21 09:48:41,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 11.11111111111111) internal successors, (100), 10 states have internal predecessors, (100), 6 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2022-07-21 09:48:41,096 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 683 transitions. [2022-07-21 09:48:41,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-07-21 09:48:41,098 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:48:41,098 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:48:41,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-21 09:48:41,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-21 09:48:41,323 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:48:41,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:48:41,324 INFO L85 PathProgramCache]: Analyzing trace with hash 664794371, now seen corresponding path program 3 times [2022-07-21 09:48:41,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:48:41,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239722542] [2022-07-21 09:48:41,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:41,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:48:41,410 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:48:41,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [738663480] [2022-07-21 09:48:41,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 09:48:41,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:41,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:48:41,412 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:48:41,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 09:48:42,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-21 09:48:42,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:48:42,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 1889 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 09:48:42,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:48:42,118 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-07-21 09:48:42,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:48:42,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:48:42,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239722542] [2022-07-21 09:48:42,119 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:48:42,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738663480] [2022-07-21 09:48:42,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738663480] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:48:42,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:48:42,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 09:48:42,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7952087] [2022-07-21 09:48:42,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:48:42,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:48:42,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:48:42,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:48:42,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:48:42,121 INFO L87 Difference]: Start difference. First operand 462 states and 683 transitions. Second operand has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-21 09:48:42,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:48:42,353 INFO L93 Difference]: Finished difference Result 851 states and 1291 transitions. [2022-07-21 09:48:42,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:48:42,354 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 241 [2022-07-21 09:48:42,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:48:42,358 INFO L225 Difference]: With dead ends: 851 [2022-07-21 09:48:42,358 INFO L226 Difference]: Without dead ends: 462 [2022-07-21 09:48:42,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:48:42,361 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 2 mSDsluCounter, 2267 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2858 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:48:42,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2858 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 09:48:42,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-07-21 09:48:42,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 462. [2022-07-21 09:48:42,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 274 states have (on average 1.2445255474452555) internal successors, (341), 278 states have internal predecessors, (341), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (183), 157 states have call predecessors, (183), 156 states have call successors, (183) [2022-07-21 09:48:42,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 682 transitions. [2022-07-21 09:48:42,381 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 682 transitions. Word has length 241 [2022-07-21 09:48:42,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:48:42,381 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 682 transitions. [2022-07-21 09:48:42,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-21 09:48:42,382 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 682 transitions. [2022-07-21 09:48:42,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-07-21 09:48:42,384 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:48:42,385 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-21 09:48:42,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-21 09:48:42,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-21 09:48:42,607 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:48:42,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:48:42,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1662762273, now seen corresponding path program 4 times [2022-07-21 09:48:42,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:48:42,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216795184] [2022-07-21 09:48:42,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:42,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:48:42,679 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:48:42,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1376019113] [2022-07-21 09:48:42,679 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-21 09:48:42,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:42,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:48:42,681 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:48:42,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-21 09:48:43,334 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-21 09:48:43,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:48:43,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 3393 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 09:48:43,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:48:43,460 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2022-07-21 09:48:43,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:48:43,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:48:43,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216795184] [2022-07-21 09:48:43,461 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:48:43,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376019113] [2022-07-21 09:48:43,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376019113] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:48:43,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:48:43,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 09:48:43,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160004865] [2022-07-21 09:48:43,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:48:43,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:48:43,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:48:43,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:48:43,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:48:43,464 INFO L87 Difference]: Start difference. First operand 462 states and 682 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-21 09:48:44,528 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 09:48:47,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:48:47,009 INFO L93 Difference]: Finished difference Result 862 states and 1283 transitions. [2022-07-21 09:48:47,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:48:47,010 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) Word has length 256 [2022-07-21 09:48:47,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:48:47,013 INFO L225 Difference]: With dead ends: 862 [2022-07-21 09:48:47,013 INFO L226 Difference]: Without dead ends: 474 [2022-07-21 09:48:47,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:48:47,016 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 64 mSDsluCounter, 3381 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 3972 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-21 09:48:47,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 3972 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-21 09:48:47,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-07-21 09:48:47,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 474. [2022-07-21 09:48:47,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 280 states have (on average 1.2428571428571429) internal successors, (348), 284 states have internal predecessors, (348), 163 states have call successors, (163), 28 states have call predecessors, (163), 29 states have return successors, (188), 162 states have call predecessors, (188), 161 states have call successors, (188) [2022-07-21 09:48:47,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 699 transitions. [2022-07-21 09:48:47,036 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 699 transitions. Word has length 256 [2022-07-21 09:48:47,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:48:47,037 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 699 transitions. [2022-07-21 09:48:47,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-21 09:48:47,037 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 699 transitions. [2022-07-21 09:48:47,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-07-21 09:48:47,040 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:48:47,040 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:48:47,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-21 09:48:47,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-21 09:48:47,249 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:48:47,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:48:47,250 INFO L85 PathProgramCache]: Analyzing trace with hash -350828385, now seen corresponding path program 1 times [2022-07-21 09:48:47,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:48:47,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299636633] [2022-07-21 09:48:47,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:47,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:48:47,329 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:48:47,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [966478053] [2022-07-21 09:48:47,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:47,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:47,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:48:47,331 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:48:47,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-21 09:48:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:48,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 3534 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 09:48:48,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:48:48,180 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2022-07-21 09:48:48,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:48:48,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:48:48,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299636633] [2022-07-21 09:48:48,181 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:48:48,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966478053] [2022-07-21 09:48:48,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966478053] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:48:48,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:48:48,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 09:48:48,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785354954] [2022-07-21 09:48:48,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:48:48,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:48:48,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:48:48,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:48:48,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:48:48,184 INFO L87 Difference]: Start difference. First operand 474 states and 699 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-21 09:48:50,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:48:50,004 INFO L93 Difference]: Finished difference Result 948 states and 1454 transitions. [2022-07-21 09:48:50,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:48:50,004 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 271 [2022-07-21 09:48:50,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:48:50,008 INFO L225 Difference]: With dead ends: 948 [2022-07-21 09:48:50,008 INFO L226 Difference]: Without dead ends: 510 [2022-07-21 09:48:50,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-21 09:48:50,013 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 21 mSDsluCounter, 2316 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2951 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 09:48:50,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2951 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-21 09:48:50,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2022-07-21 09:48:50,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 482. [2022-07-21 09:48:50,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 288 states have (on average 1.2430555555555556) internal successors, (358), 292 states have internal predecessors, (358), 163 states have call successors, (163), 28 states have call predecessors, (163), 29 states have return successors, (188), 162 states have call predecessors, (188), 161 states have call successors, (188) [2022-07-21 09:48:50,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 709 transitions. [2022-07-21 09:48:50,037 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 709 transitions. Word has length 271 [2022-07-21 09:48:50,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:48:50,038 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 709 transitions. [2022-07-21 09:48:50,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-21 09:48:50,038 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 709 transitions. [2022-07-21 09:48:50,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-07-21 09:48:50,041 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:48:50,041 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:48:50,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-21 09:48:50,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-21 09:48:50,255 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:48:50,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:48:50,256 INFO L85 PathProgramCache]: Analyzing trace with hash -899887649, now seen corresponding path program 1 times [2022-07-21 09:48:50,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:48:50,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500042953] [2022-07-21 09:48:50,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:50,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:48:50,358 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:48:50,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1537628239] [2022-07-21 09:48:50,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:50,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:50,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:48:50,361 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:48:50,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-21 09:48:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:51,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 3528 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 09:48:51,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:48:51,117 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 238 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-21 09:48:51,117 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:48:51,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:48:51,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500042953] [2022-07-21 09:48:51,117 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:48:51,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537628239] [2022-07-21 09:48:51,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537628239] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:48:51,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:48:51,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 09:48:51,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517176115] [2022-07-21 09:48:51,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:48:51,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:48:51,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:48:51,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:48:51,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:48:51,120 INFO L87 Difference]: Start difference. First operand 482 states and 709 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-21 09:48:51,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:48:51,158 INFO L93 Difference]: Finished difference Result 936 states and 1412 transitions. [2022-07-21 09:48:51,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:48:51,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 271 [2022-07-21 09:48:51,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:48:51,162 INFO L225 Difference]: With dead ends: 936 [2022-07-21 09:48:51,162 INFO L226 Difference]: Without dead ends: 490 [2022-07-21 09:48:51,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:48:51,166 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 3 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:48:51,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1870 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:48:51,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2022-07-21 09:48:51,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 486. [2022-07-21 09:48:51,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 292 states have (on average 1.2397260273972603) internal successors, (362), 296 states have internal predecessors, (362), 163 states have call successors, (163), 28 states have call predecessors, (163), 29 states have return successors, (188), 162 states have call predecessors, (188), 161 states have call successors, (188) [2022-07-21 09:48:51,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 713 transitions. [2022-07-21 09:48:51,188 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 713 transitions. Word has length 271 [2022-07-21 09:48:51,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:48:51,189 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 713 transitions. [2022-07-21 09:48:51,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-21 09:48:51,190 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 713 transitions. [2022-07-21 09:48:51,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-07-21 09:48:51,191 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:48:51,192 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:48:51,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-21 09:48:51,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-21 09:48:51,407 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:48:51,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:48:51,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1910711071, now seen corresponding path program 1 times [2022-07-21 09:48:51,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:48:51,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114281283] [2022-07-21 09:48:51,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:51,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:48:51,482 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:48:51,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [957748944] [2022-07-21 09:48:51,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:51,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:51,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:48:51,484 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:48:51,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-21 09:48:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:52,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 3518 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-21 09:48:52,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:48:52,306 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-07-21 09:48:52,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:48:52,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:48:52,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114281283] [2022-07-21 09:48:52,309 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:48:52,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957748944] [2022-07-21 09:48:52,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957748944] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:48:52,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:48:52,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 09:48:52,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388743759] [2022-07-21 09:48:52,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:48:52,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:48:52,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:48:52,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:48:52,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:48:52,311 INFO L87 Difference]: Start difference. First operand 486 states and 713 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 5 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-21 09:48:54,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:48:54,229 INFO L93 Difference]: Finished difference Result 943 states and 1400 transitions. [2022-07-21 09:48:54,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:48:54,230 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 5 states have call predecessors, (25), 4 states have call successors, (25) Word has length 271 [2022-07-21 09:48:54,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:48:54,233 INFO L225 Difference]: With dead ends: 943 [2022-07-21 09:48:54,233 INFO L226 Difference]: Without dead ends: 528 [2022-07-21 09:48:54,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:48:54,236 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 42 mSDsluCounter, 3850 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 4503 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-21 09:48:54,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 4503 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-21 09:48:54,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-07-21 09:48:54,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 505. [2022-07-21 09:48:54,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 305 states have (on average 1.2426229508196722) internal successors, (379), 309 states have internal predecessors, (379), 168 states have call successors, (168), 28 states have call predecessors, (168), 30 states have return successors, (198), 168 states have call predecessors, (198), 166 states have call successors, (198) [2022-07-21 09:48:54,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 745 transitions. [2022-07-21 09:48:54,257 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 745 transitions. Word has length 271 [2022-07-21 09:48:54,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:48:54,258 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 745 transitions. [2022-07-21 09:48:54,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 5 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-21 09:48:54,258 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 745 transitions. [2022-07-21 09:48:54,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-07-21 09:48:54,260 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:48:54,260 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:48:54,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-21 09:48:54,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-21 09:48:54,475 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:48:54,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:48:54,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1178743645, now seen corresponding path program 1 times [2022-07-21 09:48:54,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:48:54,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074241273] [2022-07-21 09:48:54,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:54,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:48:54,564 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:48:54,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [313602614] [2022-07-21 09:48:54,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:54,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:54,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:48:54,566 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:48:54,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-21 09:48:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:55,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 3515 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-21 09:48:55,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:48:55,359 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-07-21 09:48:55,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:48:55,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:48:55,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074241273] [2022-07-21 09:48:55,361 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:48:55,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313602614] [2022-07-21 09:48:55,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313602614] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:48:55,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:48:55,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 09:48:55,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236416155] [2022-07-21 09:48:55,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:48:55,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:48:55,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:48:55,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:48:55,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:48:55,363 INFO L87 Difference]: Start difference. First operand 505 states and 745 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-21 09:48:56,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:48:56,082 INFO L93 Difference]: Finished difference Result 953 states and 1415 transitions. [2022-07-21 09:48:56,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:48:56,082 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 271 [2022-07-21 09:48:56,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:48:56,086 INFO L225 Difference]: With dead ends: 953 [2022-07-21 09:48:56,086 INFO L226 Difference]: Without dead ends: 532 [2022-07-21 09:48:56,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-21 09:48:56,089 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 31 mSDsluCounter, 2525 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 3174 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 09:48:56,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 3174 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 09:48:56,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2022-07-21 09:48:56,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 511. [2022-07-21 09:48:56,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 308 states have (on average 1.2370129870129871) internal successors, (381), 312 states have internal predecessors, (381), 171 states have call successors, (171), 28 states have call predecessors, (171), 30 states have return successors, (201), 171 states have call predecessors, (201), 169 states have call successors, (201) [2022-07-21 09:48:56,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 753 transitions. [2022-07-21 09:48:56,114 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 753 transitions. Word has length 271 [2022-07-21 09:48:56,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:48:56,114 INFO L495 AbstractCegarLoop]: Abstraction has 511 states and 753 transitions. [2022-07-21 09:48:56,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-21 09:48:56,115 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 753 transitions. [2022-07-21 09:48:56,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-07-21 09:48:56,116 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:48:56,117 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:48:56,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-21 09:48:56,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:56,331 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:48:56,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:48:56,331 INFO L85 PathProgramCache]: Analyzing trace with hash -957139557, now seen corresponding path program 1 times [2022-07-21 09:48:56,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:48:56,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037681288] [2022-07-21 09:48:56,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:56,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:48:56,431 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:48:56,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2006889850] [2022-07-21 09:48:56,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:56,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:56,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:48:56,433 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:48:56,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-21 09:48:57,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:57,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 3512 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-21 09:48:57,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:48:57,328 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2022-07-21 09:48:57,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:48:57,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:48:57,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037681288] [2022-07-21 09:48:57,329 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:48:57,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006889850] [2022-07-21 09:48:57,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006889850] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:48:57,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:48:57,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:48:57,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211645170] [2022-07-21 09:48:57,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:48:57,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:48:57,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:48:57,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:48:57,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:48:57,332 INFO L87 Difference]: Start difference. First operand 511 states and 753 transitions. Second operand has 5 states, 4 states have (on average 27.75) internal successors, (111), 5 states have internal predecessors, (111), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 2 states have call predecessors, (27), 3 states have call successors, (27) [2022-07-21 09:48:57,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:48:57,952 INFO L93 Difference]: Finished difference Result 926 states and 1371 transitions. [2022-07-21 09:48:57,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:48:57,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 27.75) internal successors, (111), 5 states have internal predecessors, (111), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 2 states have call predecessors, (27), 3 states have call successors, (27) Word has length 271 [2022-07-21 09:48:57,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:48:57,956 INFO L225 Difference]: With dead ends: 926 [2022-07-21 09:48:57,956 INFO L226 Difference]: Without dead ends: 489 [2022-07-21 09:48:57,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:48:57,959 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 2 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2278 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:48:57,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2278 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 09:48:57,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-07-21 09:48:57,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2022-07-21 09:48:57,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 294 states have (on average 1.2312925170068028) internal successors, (362), 299 states have internal predecessors, (362), 163 states have call successors, (163), 28 states have call predecessors, (163), 30 states have return successors, (190), 162 states have call predecessors, (190), 161 states have call successors, (190) [2022-07-21 09:48:57,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 715 transitions. [2022-07-21 09:48:57,982 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 715 transitions. Word has length 271 [2022-07-21 09:48:57,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:48:57,982 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 715 transitions. [2022-07-21 09:48:57,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 27.75) internal successors, (111), 5 states have internal predecessors, (111), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 2 states have call predecessors, (27), 3 states have call successors, (27) [2022-07-21 09:48:57,983 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 715 transitions. [2022-07-21 09:48:57,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-07-21 09:48:57,984 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:48:57,985 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:48:58,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-21 09:48:58,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-21 09:48:58,207 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:48:58,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:48:58,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1871546181, now seen corresponding path program 1 times [2022-07-21 09:48:58,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:48:58,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372003143] [2022-07-21 09:48:58,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:58,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:48:58,298 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:48:58,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [779856340] [2022-07-21 09:48:58,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:48:58,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:48:58,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:48:58,300 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:48:58,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-21 09:48:59,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:48:59,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 3553 conjuncts, 105 conjunts are in the unsatisfiable core [2022-07-21 09:48:59,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:48:59,612 INFO L356 Elim1Store]: treesize reduction 72, result has 11.1 percent of original size [2022-07-21 09:48:59,613 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 80 treesize of output 95 [2022-07-21 09:48:59,624 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 09:48:59,633 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 138 [2022-07-21 09:48:59,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:48:59,656 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 20 [2022-07-21 09:48:59,829 INFO L356 Elim1Store]: treesize reduction 16, result has 46.7 percent of original size [2022-07-21 09:48:59,830 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 155 treesize of output 144 [2022-07-21 09:48:59,860 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 31 [2022-07-21 09:49:00,478 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5441 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5441))) is different from true [2022-07-21 09:49:00,604 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5442 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5442) |c_#memory_int|)) is different from true [2022-07-21 09:49:00,929 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 378 proven. 2 refuted. 0 times theorem prover too weak. 103 trivial. 17 not checked. [2022-07-21 09:49:00,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:49:01,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:49:01,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372003143] [2022-07-21 09:49:01,400 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:49:01,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779856340] [2022-07-21 09:49:01,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779856340] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:49:01,400 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:49:01,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2022-07-21 09:49:01,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401238503] [2022-07-21 09:49:01,401 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-21 09:49:01,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-21 09:49:01,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:49:01,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-21 09:49:01,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=694, Unknown=32, NotChecked=110, Total=930 [2022-07-21 09:49:01,402 INFO L87 Difference]: Start difference. First operand 489 states and 715 transitions. Second operand has 26 states, 25 states have (on average 5.96) internal successors, (149), 24 states have internal predecessors, (149), 14 states have call successors, (35), 5 states have call predecessors, (35), 9 states have return successors, (33), 14 states have call predecessors, (33), 14 states have call successors, (33) [2022-07-21 09:49:01,786 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5442 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5442) |c_#memory_int|)) (exists ((v_ArrVal_5441 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5441)))) is different from true [2022-07-21 09:49:04,748 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 09:49:08,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:49:08,173 INFO L93 Difference]: Finished difference Result 1252 states and 1987 transitions. [2022-07-21 09:49:08,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-21 09:49:08,174 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 5.96) internal successors, (149), 24 states have internal predecessors, (149), 14 states have call successors, (35), 5 states have call predecessors, (35), 9 states have return successors, (33), 14 states have call predecessors, (33), 14 states have call successors, (33) Word has length 282 [2022-07-21 09:49:08,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:49:08,180 INFO L225 Difference]: With dead ends: 1252 [2022-07-21 09:49:08,180 INFO L226 Difference]: Without dead ends: 794 [2022-07-21 09:49:08,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 346 SyntacticMatches, 7 SemanticMatches, 37 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=144, Invalid=1082, Unknown=46, NotChecked=210, Total=1482 [2022-07-21 09:49:08,184 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 309 mSDsluCounter, 5011 mSDsCounter, 0 mSdLazyCounter, 3420 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 5632 SdHoareTripleChecker+Invalid, 9982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 3420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6335 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-07-21 09:49:08,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 5632 Invalid, 9982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 3420 Invalid, 0 Unknown, 6335 Unchecked, 5.8s Time] [2022-07-21 09:49:08,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2022-07-21 09:49:08,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 574. [2022-07-21 09:49:08,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 361 states have (on average 1.2271468144044322) internal successors, (443), 367 states have internal predecessors, (443), 171 states have call successors, (171), 34 states have call predecessors, (171), 40 states have return successors, (255), 173 states have call predecessors, (255), 169 states have call successors, (255) [2022-07-21 09:49:08,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 869 transitions. [2022-07-21 09:49:08,218 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 869 transitions. Word has length 282 [2022-07-21 09:49:08,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:49:08,218 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 869 transitions. [2022-07-21 09:49:08,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 5.96) internal successors, (149), 24 states have internal predecessors, (149), 14 states have call successors, (35), 5 states have call predecessors, (35), 9 states have return successors, (33), 14 states have call predecessors, (33), 14 states have call successors, (33) [2022-07-21 09:49:08,218 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 869 transitions. [2022-07-21 09:49:08,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-07-21 09:49:08,220 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:49:08,221 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:49:08,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-07-21 09:49:08,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-21 09:49:08,447 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:49:08,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:49:08,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1803324809, now seen corresponding path program 1 times [2022-07-21 09:49:08,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:49:08,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173798030] [2022-07-21 09:49:08,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:08,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:49:08,516 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:49:08,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1563668036] [2022-07-21 09:49:08,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:08,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:49:08,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:49:08,518 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:49:08,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-21 09:49:09,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:09,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 3551 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 09:49:09,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:49:09,332 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 235 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2022-07-21 09:49:09,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:49:09,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:49:09,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173798030] [2022-07-21 09:49:09,333 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:49:09,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563668036] [2022-07-21 09:49:09,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563668036] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:49:09,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:49:09,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 09:49:09,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110455783] [2022-07-21 09:49:09,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:49:09,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:49:09,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:49:09,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:49:09,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:49:09,335 INFO L87 Difference]: Start difference. First operand 574 states and 869 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-21 09:49:09,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:49:09,377 INFO L93 Difference]: Finished difference Result 1115 states and 1778 transitions. [2022-07-21 09:49:09,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:49:09,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 282 [2022-07-21 09:49:09,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:49:09,382 INFO L225 Difference]: With dead ends: 1115 [2022-07-21 09:49:09,382 INFO L226 Difference]: Without dead ends: 577 [2022-07-21 09:49:09,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:49:09,387 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 7 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:49:09,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1870 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:49:09,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-07-21 09:49:09,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 574. [2022-07-21 09:49:09,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 361 states have (on average 1.2243767313019391) internal successors, (442), 367 states have internal predecessors, (442), 171 states have call successors, (171), 34 states have call predecessors, (171), 40 states have return successors, (255), 173 states have call predecessors, (255), 169 states have call successors, (255) [2022-07-21 09:49:09,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 868 transitions. [2022-07-21 09:49:09,414 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 868 transitions. Word has length 282 [2022-07-21 09:49:09,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:49:09,414 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 868 transitions. [2022-07-21 09:49:09,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-21 09:49:09,414 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 868 transitions. [2022-07-21 09:49:09,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-07-21 09:49:09,416 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:49:09,416 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:49:09,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-21 09:49:09,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-21 09:49:09,640 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:49:09,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:49:09,640 INFO L85 PathProgramCache]: Analyzing trace with hash 568516623, now seen corresponding path program 1 times [2022-07-21 09:49:09,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:49:09,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069592009] [2022-07-21 09:49:09,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:09,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:49:09,708 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:49:09,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [582344395] [2022-07-21 09:49:09,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:09,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:49:09,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:49:09,711 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:49:09,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-21 09:49:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:10,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 3583 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 09:49:10,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:49:10,596 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 238 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-07-21 09:49:10,596 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:49:10,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:49:10,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069592009] [2022-07-21 09:49:10,597 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:49:10,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582344395] [2022-07-21 09:49:10,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582344395] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:49:10,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:49:10,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:49:10,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606104782] [2022-07-21 09:49:10,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:49:10,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:49:10,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:49:10,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:49:10,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:49:10,599 INFO L87 Difference]: Start difference. First operand 574 states and 868 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-21 09:49:11,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:49:11,597 INFO L93 Difference]: Finished difference Result 1119 states and 1799 transitions. [2022-07-21 09:49:11,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:49:11,597 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 288 [2022-07-21 09:49:11,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:49:11,602 INFO L225 Difference]: With dead ends: 1119 [2022-07-21 09:49:11,602 INFO L226 Difference]: Without dead ends: 581 [2022-07-21 09:49:11,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:49:11,607 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 15 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2396 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 09:49:11,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2396 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 09:49:11,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2022-07-21 09:49:11,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 575. [2022-07-21 09:49:11,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 362 states have (on average 1.223756906077348) internal successors, (443), 368 states have internal predecessors, (443), 171 states have call successors, (171), 34 states have call predecessors, (171), 40 states have return successors, (255), 173 states have call predecessors, (255), 169 states have call successors, (255) [2022-07-21 09:49:11,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 869 transitions. [2022-07-21 09:49:11,635 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 869 transitions. Word has length 288 [2022-07-21 09:49:11,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:49:11,636 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 869 transitions. [2022-07-21 09:49:11,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-21 09:49:11,636 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 869 transitions. [2022-07-21 09:49:11,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-07-21 09:49:11,638 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:49:11,638 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:49:11,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-21 09:49:11,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:49:11,856 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:49:11,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:49:11,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1117174929, now seen corresponding path program 1 times [2022-07-21 09:49:11,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:49:11,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314641047] [2022-07-21 09:49:11,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:11,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:49:11,932 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:49:11,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [347250420] [2022-07-21 09:49:11,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:11,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:49:11,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:49:11,934 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:49:11,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-21 09:49:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:12,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 3563 conjuncts, 45 conjunts are in the unsatisfiable core [2022-07-21 09:49:12,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:49:13,201 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2022-07-21 09:49:13,203 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-07-21 09:49:13,222 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-07-21 09:49:13,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:49:13,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:49:13,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314641047] [2022-07-21 09:49:13,223 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:49:13,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347250420] [2022-07-21 09:49:13,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347250420] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:49:13,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:49:13,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 09:49:13,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056344707] [2022-07-21 09:49:13,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:49:13,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 09:49:13,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:49:13,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 09:49:13,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-21 09:49:13,225 INFO L87 Difference]: Start difference. First operand 575 states and 869 transitions. Second operand has 13 states, 13 states have (on average 9.846153846153847) internal successors, (128), 13 states have internal predecessors, (128), 8 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (30), 8 states have call predecessors, (30), 8 states have call successors, (30) [2022-07-21 09:49:20,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:49:20,322 INFO L93 Difference]: Finished difference Result 1130 states and 1767 transitions. [2022-07-21 09:49:20,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 09:49:20,323 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.846153846153847) internal successors, (128), 13 states have internal predecessors, (128), 8 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (30), 8 states have call predecessors, (30), 8 states have call successors, (30) Word has length 286 [2022-07-21 09:49:20,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:49:20,327 INFO L225 Difference]: With dead ends: 1130 [2022-07-21 09:49:20,328 INFO L226 Difference]: Without dead ends: 655 [2022-07-21 09:49:20,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 271 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-07-21 09:49:20,331 INFO L413 NwaCegarLoop]: 607 mSDtfsCounter, 105 mSDsluCounter, 6077 mSDsCounter, 0 mSdLazyCounter, 1564 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 6684 SdHoareTripleChecker+Invalid, 1721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 146 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-07-21 09:49:20,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 6684 Invalid, 1721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1564 Invalid, 0 Unknown, 146 Unchecked, 6.9s Time] [2022-07-21 09:49:20,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2022-07-21 09:49:20,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 626. [2022-07-21 09:49:20,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 401 states have (on average 1.2169576059850373) internal successors, (488), 407 states have internal predecessors, (488), 177 states have call successors, (177), 38 states have call predecessors, (177), 46 states have return successors, (296), 181 states have call predecessors, (296), 175 states have call successors, (296) [2022-07-21 09:49:20,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 961 transitions. [2022-07-21 09:49:20,361 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 961 transitions. Word has length 286 [2022-07-21 09:49:20,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:49:20,362 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 961 transitions. [2022-07-21 09:49:20,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.846153846153847) internal successors, (128), 13 states have internal predecessors, (128), 8 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (30), 8 states have call predecessors, (30), 8 states have call successors, (30) [2022-07-21 09:49:20,362 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 961 transitions. [2022-07-21 09:49:20,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-07-21 09:49:20,364 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:49:20,364 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-21 09:49:20,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-07-21 09:49:20,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:49:20,579 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:49:20,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:49:20,580 INFO L85 PathProgramCache]: Analyzing trace with hash 506581833, now seen corresponding path program 1 times [2022-07-21 09:49:20,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:49:20,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770111937] [2022-07-21 09:49:20,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:20,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:49:20,656 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:49:20,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [833812731] [2022-07-21 09:49:20,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:20,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:49:20,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:49:20,658 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:49:20,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-21 09:49:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:21,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 3568 conjuncts, 59 conjunts are in the unsatisfiable core [2022-07-21 09:49:21,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:49:22,075 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2022-07-21 09:49:22,077 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-07-21 09:49:22,097 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2022-07-21 09:49:22,097 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:49:22,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:49:22,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770111937] [2022-07-21 09:49:22,097 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:49:22,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833812731] [2022-07-21 09:49:22,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833812731] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:49:22,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:49:22,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 09:49:22,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935639603] [2022-07-21 09:49:22,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:49:22,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 09:49:22,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:49:22,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 09:49:22,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-21 09:49:22,099 INFO L87 Difference]: Start difference. First operand 626 states and 961 transitions. Second operand has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 states have internal predecessors, (122), 7 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) [2022-07-21 09:49:27,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:49:27,617 INFO L93 Difference]: Finished difference Result 1300 states and 2083 transitions. [2022-07-21 09:49:27,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 09:49:27,618 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 states have internal predecessors, (122), 7 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) Word has length 288 [2022-07-21 09:49:27,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:49:27,623 INFO L225 Difference]: With dead ends: 1300 [2022-07-21 09:49:27,623 INFO L226 Difference]: Without dead ends: 792 [2022-07-21 09:49:27,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 273 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-07-21 09:49:27,627 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 111 mSDsluCounter, 4981 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 5585 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 153 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-07-21 09:49:27,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 5585 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 870 Invalid, 0 Unknown, 153 Unchecked, 5.3s Time] [2022-07-21 09:49:27,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2022-07-21 09:49:27,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 677. [2022-07-21 09:49:27,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 441 states have (on average 1.2108843537414966) internal successors, (534), 447 states have internal predecessors, (534), 182 states have call successors, (182), 43 states have call predecessors, (182), 52 states have return successors, (316), 187 states have call predecessors, (316), 180 states have call successors, (316) [2022-07-21 09:49:27,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1032 transitions. [2022-07-21 09:49:27,671 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1032 transitions. Word has length 288 [2022-07-21 09:49:27,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:49:27,671 INFO L495 AbstractCegarLoop]: Abstraction has 677 states and 1032 transitions. [2022-07-21 09:49:27,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 states have internal predecessors, (122), 7 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) [2022-07-21 09:49:27,672 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1032 transitions. [2022-07-21 09:49:27,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-07-21 09:49:27,674 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:49:27,674 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:49:27,703 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-07-21 09:49:27,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-07-21 09:49:27,891 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:49:27,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:49:27,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1457944583, now seen corresponding path program 1 times [2022-07-21 09:49:27,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:49:27,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708042829] [2022-07-21 09:49:27,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:27,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:49:27,973 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:49:27,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1358885553] [2022-07-21 09:49:27,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:27,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:49:27,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:49:27,975 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:49:27,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-21 09:49:28,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:28,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 3571 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-21 09:49:28,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:49:28,847 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2022-07-21 09:49:28,847 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:49:28,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:49:28,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708042829] [2022-07-21 09:49:28,848 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:49:28,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358885553] [2022-07-21 09:49:28,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358885553] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:49:28,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:49:28,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:49:28,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799088125] [2022-07-21 09:49:28,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:49:28,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:49:28,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:49:28,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:49:28,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:49:28,851 INFO L87 Difference]: Start difference. First operand 677 states and 1032 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-21 09:49:28,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:49:28,901 INFO L93 Difference]: Finished difference Result 1329 states and 2148 transitions. [2022-07-21 09:49:28,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:49:28,903 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 288 [2022-07-21 09:49:28,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:49:28,908 INFO L225 Difference]: With dead ends: 1329 [2022-07-21 09:49:28,908 INFO L226 Difference]: Without dead ends: 717 [2022-07-21 09:49:28,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:49:28,912 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 8 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2572 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:49:28,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2572 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:49:28,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2022-07-21 09:49:28,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 693. [2022-07-21 09:49:28,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 457 states have (on average 1.2078774617067833) internal successors, (552), 463 states have internal predecessors, (552), 182 states have call successors, (182), 43 states have call predecessors, (182), 52 states have return successors, (316), 187 states have call predecessors, (316), 180 states have call successors, (316) [2022-07-21 09:49:28,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1050 transitions. [2022-07-21 09:49:28,949 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1050 transitions. Word has length 288 [2022-07-21 09:49:28,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:49:28,950 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 1050 transitions. [2022-07-21 09:49:28,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-21 09:49:28,950 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1050 transitions. [2022-07-21 09:49:28,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-07-21 09:49:28,952 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:49:28,953 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:49:28,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-21 09:49:29,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-07-21 09:49:29,171 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:49:29,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:49:29,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1571728043, now seen corresponding path program 1 times [2022-07-21 09:49:29,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:49:29,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566328609] [2022-07-21 09:49:29,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:29,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:49:29,244 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:49:29,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1104429570] [2022-07-21 09:49:29,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:29,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:49:29,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:49:29,246 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:49:29,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-21 09:49:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:30,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 3568 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 09:49:30,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:49:30,067 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2022-07-21 09:49:30,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:49:30,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:49:30,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566328609] [2022-07-21 09:49:30,067 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:49:30,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104429570] [2022-07-21 09:49:30,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104429570] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:49:30,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:49:30,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 09:49:30,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688459934] [2022-07-21 09:49:30,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:49:30,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:49:30,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:49:30,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:49:30,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:49:30,076 INFO L87 Difference]: Start difference. First operand 693 states and 1050 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-21 09:49:30,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:49:30,117 INFO L93 Difference]: Finished difference Result 1337 states and 2105 transitions. [2022-07-21 09:49:30,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:49:30,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 287 [2022-07-21 09:49:30,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:49:30,122 INFO L225 Difference]: With dead ends: 1337 [2022-07-21 09:49:30,123 INFO L226 Difference]: Without dead ends: 680 [2022-07-21 09:49:30,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:49:30,129 INFO L413 NwaCegarLoop]: 626 mSDtfsCounter, 2 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:49:30,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1867 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:49:30,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2022-07-21 09:49:30,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 673. [2022-07-21 09:49:30,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 437 states have (on average 1.1876430205949657) internal successors, (519), 443 states have internal predecessors, (519), 182 states have call successors, (182), 43 states have call predecessors, (182), 52 states have return successors, (316), 187 states have call predecessors, (316), 180 states have call successors, (316) [2022-07-21 09:49:30,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1017 transitions. [2022-07-21 09:49:30,181 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1017 transitions. Word has length 287 [2022-07-21 09:49:30,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:49:30,182 INFO L495 AbstractCegarLoop]: Abstraction has 673 states and 1017 transitions. [2022-07-21 09:49:30,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-21 09:49:30,183 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1017 transitions. [2022-07-21 09:49:30,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2022-07-21 09:49:30,185 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:49:30,185 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-21 09:49:30,216 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-07-21 09:49:30,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:49:30,411 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:49:30,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:49:30,412 INFO L85 PathProgramCache]: Analyzing trace with hash 2122232585, now seen corresponding path program 1 times [2022-07-21 09:49:30,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:49:30,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212177067] [2022-07-21 09:49:30,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:30,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:49:30,487 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:49:30,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1623440047] [2022-07-21 09:49:30,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:30,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:49:30,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:49:30,489 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:49:30,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-21 09:49:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:31,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 3574 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-21 09:49:31,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:49:31,486 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 207 proven. 1 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2022-07-21 09:49:31,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:49:32,221 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 73 proven. 13 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2022-07-21 09:49:32,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:49:32,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212177067] [2022-07-21 09:49:32,222 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:49:32,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623440047] [2022-07-21 09:49:32,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623440047] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:49:32,222 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:49:32,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 22 [2022-07-21 09:49:32,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619681357] [2022-07-21 09:49:32,223 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:49:32,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-21 09:49:32,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:49:32,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-21 09:49:32,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2022-07-21 09:49:32,225 INFO L87 Difference]: Start difference. First operand 673 states and 1017 transitions. Second operand has 22 states, 18 states have (on average 7.333333333333333) internal successors, (132), 15 states have internal predecessors, (132), 6 states have call successors, (35), 3 states have call predecessors, (35), 7 states have return successors, (36), 8 states have call predecessors, (36), 5 states have call successors, (36) [2022-07-21 09:49:32,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:49:32,938 INFO L93 Difference]: Finished difference Result 1194 states and 1907 transitions. [2022-07-21 09:49:32,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 09:49:32,939 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 7.333333333333333) internal successors, (132), 15 states have internal predecessors, (132), 6 states have call successors, (35), 3 states have call predecessors, (35), 7 states have return successors, (36), 8 states have call predecessors, (36), 5 states have call successors, (36) Word has length 309 [2022-07-21 09:49:32,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:49:32,944 INFO L225 Difference]: With dead ends: 1194 [2022-07-21 09:49:32,944 INFO L226 Difference]: Without dead ends: 693 [2022-07-21 09:49:32,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 619 GetRequests, 595 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2022-07-21 09:49:32,947 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 15 mSDsluCounter, 10842 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 11457 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:49:32,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 11457 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1034 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 09:49:32,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2022-07-21 09:49:32,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 685. [2022-07-21 09:49:32,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 447 states have (on average 1.1856823266219239) internal successors, (530), 455 states have internal predecessors, (530), 182 states have call successors, (182), 43 states have call predecessors, (182), 54 states have return successors, (350), 187 states have call predecessors, (350), 180 states have call successors, (350) [2022-07-21 09:49:32,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1062 transitions. [2022-07-21 09:49:32,982 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1062 transitions. Word has length 309 [2022-07-21 09:49:32,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:49:32,982 INFO L495 AbstractCegarLoop]: Abstraction has 685 states and 1062 transitions. [2022-07-21 09:49:32,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 7.333333333333333) internal successors, (132), 15 states have internal predecessors, (132), 6 states have call successors, (35), 3 states have call predecessors, (35), 7 states have return successors, (36), 8 states have call predecessors, (36), 5 states have call successors, (36) [2022-07-21 09:49:32,983 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1062 transitions. [2022-07-21 09:49:32,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-07-21 09:49:32,985 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:49:32,985 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:49:33,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-07-21 09:49:33,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:49:33,211 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:49:33,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:49:33,212 INFO L85 PathProgramCache]: Analyzing trace with hash 578331100, now seen corresponding path program 2 times [2022-07-21 09:49:33,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:49:33,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800322167] [2022-07-21 09:49:33,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:33,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:49:33,285 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:49:33,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2077498288] [2022-07-21 09:49:33,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:49:33,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:49:33,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:49:33,287 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:49:33,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-21 09:49:34,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:49:34,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:49:34,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 3567 conjuncts, 39 conjunts are in the unsatisfiable core [2022-07-21 09:49:34,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:49:34,905 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2022-07-21 09:49:34,934 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2022-07-21 09:49:34,934 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:49:34,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:49:34,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800322167] [2022-07-21 09:49:34,935 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:49:34,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077498288] [2022-07-21 09:49:34,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077498288] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:49:34,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:49:34,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 09:49:34,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755279143] [2022-07-21 09:49:34,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:49:34,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 09:49:34,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:49:34,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 09:49:34,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-21 09:49:34,936 INFO L87 Difference]: Start difference. First operand 685 states and 1062 transitions. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 7 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) [2022-07-21 09:49:39,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:49:39,978 INFO L93 Difference]: Finished difference Result 1512 states and 2537 transitions. [2022-07-21 09:49:39,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-21 09:49:39,979 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 7 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) Word has length 293 [2022-07-21 09:49:39,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:49:39,986 INFO L225 Difference]: With dead ends: 1512 [2022-07-21 09:49:39,986 INFO L226 Difference]: Without dead ends: 868 [2022-07-21 09:49:39,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=194, Invalid=798, Unknown=0, NotChecked=0, Total=992 [2022-07-21 09:49:39,990 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 281 mSDsluCounter, 3487 mSDsCounter, 0 mSdLazyCounter, 3764 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 4092 SdHoareTripleChecker+Invalid, 3994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 3764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-21 09:49:39,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 4092 Invalid, 3994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 3764 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-07-21 09:49:39,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2022-07-21 09:49:40,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 638. [2022-07-21 09:49:40,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 411 states have (on average 1.194647201946472) internal successors, (491), 418 states have internal predecessors, (491), 177 states have call successors, (177), 38 states have call predecessors, (177), 48 states have return successors, (330), 182 states have call predecessors, (330), 175 states have call successors, (330) [2022-07-21 09:49:40,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 998 transitions. [2022-07-21 09:49:40,031 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 998 transitions. Word has length 293 [2022-07-21 09:49:40,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:49:40,031 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 998 transitions. [2022-07-21 09:49:40,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 7 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) [2022-07-21 09:49:40,032 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 998 transitions. [2022-07-21 09:49:40,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2022-07-21 09:49:40,034 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:49:40,034 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-21 09:49:40,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-07-21 09:49:40,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-07-21 09:49:40,239 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:49:40,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:49:40,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1853967951, now seen corresponding path program 1 times [2022-07-21 09:49:40,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:49:40,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703059185] [2022-07-21 09:49:40,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:40,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:49:40,303 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:49:40,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1367436832] [2022-07-21 09:49:40,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:40,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:49:40,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:49:40,305 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:49:40,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-21 09:49:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:41,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 3568 conjuncts, 195 conjunts are in the unsatisfiable core [2022-07-21 09:49:41,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:49:41,370 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:49:41,493 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:49:41,611 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8952 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_8952))) is different from true [2022-07-21 09:49:44,006 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8956 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_8955 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_8955))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_8956))))) is different from true [2022-07-21 09:49:46,021 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8956 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_8955 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_8955)) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_8956))))) is different from true [2022-07-21 09:49:46,080 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-07-21 09:49:46,080 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-07-21 09:49:46,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:49:46,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:49:46,871 INFO L356 Elim1Store]: treesize reduction 61, result has 37.1 percent of original size [2022-07-21 09:49:46,872 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 46 treesize of output 98 [2022-07-21 09:49:46,880 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-21 09:49:46,881 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-21 09:49:46,977 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-21 09:49:47,021 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-21 09:49:47,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:49:47,057 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2022-07-21 09:49:47,192 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 09:49:47,193 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 9 [2022-07-21 09:49:47,197 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-07-21 09:50:09,697 WARN L233 SmtUtils]: Spent 6.13s on a formula simplification that was a NOOP. DAG size: 129 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-21 09:50:10,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:50:10,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:50:10,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:50:11,513 INFO L356 Elim1Store]: treesize reduction 666, result has 34.2 percent of original size [2022-07-21 09:50:11,513 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 11 new quantified variables, introduced 51 case distinctions, treesize of input 506 treesize of output 813 [2022-07-21 09:50:11,559 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 801 treesize of output 930 [2022-07-21 09:50:11,647 INFO L356 Elim1Store]: treesize reduction 222, result has 19.0 percent of original size [2022-07-21 09:50:11,647 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 93 treesize of output 148 [2022-07-21 09:50:11,674 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:50:11,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 09:50:11,698 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 185 [2022-07-21 09:50:12,491 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-07-21 09:50:12,536 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-07-21 09:50:14,850 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-07-21 09:50:14,939 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 44 [2022-07-21 09:50:15,021 INFO L356 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-07-21 09:50:15,022 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 175 treesize of output 156 [2022-07-21 09:50:15,050 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 45 [2022-07-21 09:50:21,771 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_8990 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_8990)))) (exists ((v_ArrVal_8991 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_8991))))) is different from true [2022-07-21 09:50:36,631 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2022-07-21 09:50:36,648 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-21 09:50:37,042 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 295 proven. 75 refuted. 30 times theorem prover too weak. 81 trivial. 25 not checked. [2022-07-21 09:50:37,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:50:37,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:50:37,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703059185] [2022-07-21 09:50:37,577 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:50:37,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367436832] [2022-07-21 09:50:37,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367436832] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:50:37,578 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:50:37,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2022-07-21 09:50:37,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119728] [2022-07-21 09:50:37,578 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-21 09:50:37,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-07-21 09:50:37,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:50:37,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-07-21 09:50:37,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1465, Unknown=52, NotChecked=324, Total=1980 [2022-07-21 09:50:37,580 INFO L87 Difference]: Start difference. First operand 638 states and 998 transitions. Second operand has 44 states, 39 states have (on average 4.282051282051282) internal successors, (167), 39 states have internal predecessors, (167), 20 states have call successors, (37), 11 states have call predecessors, (37), 15 states have return successors, (35), 19 states have call predecessors, (35), 20 states have call successors, (35) [2022-07-21 09:50:43,177 WARN L233 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 39 DAG size of output: 22 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-21 09:50:55,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:50:55,123 INFO L93 Difference]: Finished difference Result 1647 states and 2749 transitions. [2022-07-21 09:50:55,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-21 09:50:55,123 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 39 states have (on average 4.282051282051282) internal successors, (167), 39 states have internal predecessors, (167), 20 states have call successors, (37), 11 states have call predecessors, (37), 15 states have return successors, (35), 19 states have call predecessors, (35), 20 states have call successors, (35) Word has length 289 [2022-07-21 09:50:55,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:50:55,132 INFO L225 Difference]: With dead ends: 1647 [2022-07-21 09:50:55,132 INFO L226 Difference]: Without dead ends: 1139 [2022-07-21 09:50:55,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 314 SyntacticMatches, 7 SemanticMatches, 48 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 58.5s TimeCoverageRelationStatistics Valid=176, Invalid=1843, Unknown=67, NotChecked=364, Total=2450 [2022-07-21 09:50:55,136 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 735 mSDsluCounter, 7378 mSDsCounter, 0 mSdLazyCounter, 2942 mSolverCounterSat, 1099 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 8094 SdHoareTripleChecker+Invalid, 16531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1099 IncrementalHoareTripleChecker+Valid, 2942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12490 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:50:55,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 8094 Invalid, 16531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1099 Valid, 2942 Invalid, 0 Unknown, 12490 Unchecked, 2.6s Time] [2022-07-21 09:50:55,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-07-21 09:50:55,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 839. [2022-07-21 09:50:55,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 573 states have (on average 1.193717277486911) internal successors, (684), 586 states have internal predecessors, (684), 195 states have call successors, (195), 48 states have call predecessors, (195), 69 states have return successors, (481), 205 states have call predecessors, (481), 193 states have call successors, (481) [2022-07-21 09:50:55,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1360 transitions. [2022-07-21 09:50:55,200 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1360 transitions. Word has length 289 [2022-07-21 09:50:55,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:50:55,201 INFO L495 AbstractCegarLoop]: Abstraction has 839 states and 1360 transitions. [2022-07-21 09:50:55,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 39 states have (on average 4.282051282051282) internal successors, (167), 39 states have internal predecessors, (167), 20 states have call successors, (37), 11 states have call predecessors, (37), 15 states have return successors, (35), 19 states have call predecessors, (35), 20 states have call successors, (35) [2022-07-21 09:50:55,201 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1360 transitions. [2022-07-21 09:50:55,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2022-07-21 09:50:55,204 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:50:55,205 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:50:55,238 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-07-21 09:50:55,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-21 09:50:55,431 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:50:55,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:50:55,432 INFO L85 PathProgramCache]: Analyzing trace with hash 823243919, now seen corresponding path program 1 times [2022-07-21 09:50:55,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:50:55,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525424042] [2022-07-21 09:50:55,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:50:55,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:50:55,498 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:50:55,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1423448158] [2022-07-21 09:50:55,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:50:55,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:50:55,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:50:55,500 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:50:55,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-07-21 09:50:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:50:56,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 3571 conjuncts, 33 conjunts are in the unsatisfiable core [2022-07-21 09:50:56,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:50:56,565 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 297 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2022-07-21 09:50:56,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:50:56,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:50:56,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525424042] [2022-07-21 09:50:56,566 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:50:56,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423448158] [2022-07-21 09:50:56,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423448158] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:50:56,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:50:56,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 09:50:56,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864145] [2022-07-21 09:50:56,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:50:56,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 09:50:56,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:50:56,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 09:50:56,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-21 09:50:56,567 INFO L87 Difference]: Start difference. First operand 839 states and 1360 transitions. Second operand has 12 states, 12 states have (on average 10.916666666666666) internal successors, (131), 9 states have internal predecessors, (131), 2 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (31), 5 states have call predecessors, (31), 2 states have call successors, (31) [2022-07-21 09:50:56,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:50:56,870 INFO L93 Difference]: Finished difference Result 1629 states and 2769 transitions. [2022-07-21 09:50:56,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 09:50:56,870 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.916666666666666) internal successors, (131), 9 states have internal predecessors, (131), 2 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (31), 5 states have call predecessors, (31), 2 states have call successors, (31) Word has length 299 [2022-07-21 09:50:56,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:50:56,877 INFO L225 Difference]: With dead ends: 1629 [2022-07-21 09:50:56,877 INFO L226 Difference]: Without dead ends: 875 [2022-07-21 09:50:56,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-07-21 09:50:56,883 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 16 mSDsluCounter, 6401 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 7048 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:50:56,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 7048 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 09:50:56,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2022-07-21 09:50:56,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 839. [2022-07-21 09:50:56,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 573 states have (on average 1.1849912739965096) internal successors, (679), 582 states have internal predecessors, (679), 195 states have call successors, (195), 48 states have call predecessors, (195), 69 states have return successors, (481), 209 states have call predecessors, (481), 193 states have call successors, (481) [2022-07-21 09:50:56,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1355 transitions. [2022-07-21 09:50:56,936 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1355 transitions. Word has length 299 [2022-07-21 09:50:56,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:50:56,937 INFO L495 AbstractCegarLoop]: Abstraction has 839 states and 1355 transitions. [2022-07-21 09:50:56,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.916666666666666) internal successors, (131), 9 states have internal predecessors, (131), 2 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (31), 5 states have call predecessors, (31), 2 states have call successors, (31) [2022-07-21 09:50:56,937 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1355 transitions. [2022-07-21 09:50:56,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-07-21 09:50:56,940 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:50:56,940 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:50:56,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-07-21 09:50:57,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-21 09:50:57,155 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:50:57,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:50:57,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1911366667, now seen corresponding path program 1 times [2022-07-21 09:50:57,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:50:57,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986754301] [2022-07-21 09:50:57,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:50:57,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:50:57,219 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:50:57,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1219192181] [2022-07-21 09:50:57,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:50:57,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:50:57,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:50:57,221 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:50:57,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-07-21 09:50:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:50:58,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 3563 conjuncts, 112 conjunts are in the unsatisfiable core [2022-07-21 09:50:58,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:50:58,344 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:50:58,737 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-21 09:50:58,737 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-21 09:51:00,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:51:00,821 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-21 09:51:03,658 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_9782 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_9782))) is different from true [2022-07-21 09:51:04,637 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 274 proven. 20 refuted. 2 times theorem prover too weak. 203 trivial. 3 not checked. [2022-07-21 09:51:04,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:51:05,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:51:05,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986754301] [2022-07-21 09:51:05,600 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:51:05,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219192181] [2022-07-21 09:51:05,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219192181] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:51:05,600 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:51:05,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2022-07-21 09:51:05,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346657799] [2022-07-21 09:51:05,600 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-21 09:51:05,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-21 09:51:05,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:51:05,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-21 09:51:05,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=854, Unknown=40, NotChecked=60, Total=1056 [2022-07-21 09:51:05,602 INFO L87 Difference]: Start difference. First operand 839 states and 1355 transitions. Second operand has 32 states, 28 states have (on average 5.25) internal successors, (147), 27 states have internal predecessors, (147), 12 states have call successors, (35), 7 states have call predecessors, (35), 12 states have return successors, (33), 12 states have call predecessors, (33), 12 states have call successors, (33) [2022-07-21 09:51:10,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:51:10,780 INFO L93 Difference]: Finished difference Result 1731 states and 2863 transitions. [2022-07-21 09:51:10,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-21 09:51:10,781 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 5.25) internal successors, (147), 27 states have internal predecessors, (147), 12 states have call successors, (35), 7 states have call predecessors, (35), 12 states have return successors, (33), 12 states have call predecessors, (33), 12 states have call successors, (33) Word has length 287 [2022-07-21 09:51:10,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:51:10,786 INFO L225 Difference]: With dead ends: 1731 [2022-07-21 09:51:10,786 INFO L226 Difference]: Without dead ends: 980 [2022-07-21 09:51:10,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 420 SyntacticMatches, 10 SemanticMatches, 39 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=149, Invalid=1364, Unknown=51, NotChecked=76, Total=1640 [2022-07-21 09:51:10,789 INFO L413 NwaCegarLoop]: 659 mSDtfsCounter, 262 mSDsluCounter, 5583 mSDsCounter, 0 mSdLazyCounter, 2568 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 6242 SdHoareTripleChecker+Invalid, 8986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 2568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5984 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-07-21 09:51:10,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 6242 Invalid, 8986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 2568 Invalid, 0 Unknown, 5984 Unchecked, 4.4s Time] [2022-07-21 09:51:10,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2022-07-21 09:51:10,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 870. [2022-07-21 09:51:10,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 597 states have (on average 1.1842546063651591) internal successors, (707), 607 states have internal predecessors, (707), 198 states have call successors, (198), 50 states have call predecessors, (198), 73 states have return successors, (510), 213 states have call predecessors, (510), 196 states have call successors, (510) [2022-07-21 09:51:10,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1415 transitions. [2022-07-21 09:51:10,849 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1415 transitions. Word has length 287 [2022-07-21 09:51:10,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:51:10,850 INFO L495 AbstractCegarLoop]: Abstraction has 870 states and 1415 transitions. [2022-07-21 09:51:10,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 5.25) internal successors, (147), 27 states have internal predecessors, (147), 12 states have call successors, (35), 7 states have call predecessors, (35), 12 states have return successors, (33), 12 states have call predecessors, (33), 12 states have call successors, (33) [2022-07-21 09:51:10,850 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1415 transitions. [2022-07-21 09:51:10,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2022-07-21 09:51:10,854 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:51:10,854 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-21 09:51:10,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-07-21 09:51:11,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-21 09:51:11,067 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:51:11,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:51:11,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1670582127, now seen corresponding path program 1 times [2022-07-21 09:51:11,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:51:11,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874434366] [2022-07-21 09:51:11,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:51:11,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:51:11,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:51:11,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:51:11,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:51:11,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:51:11,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:51:11,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 09:51:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:51:11,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 09:51:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:51:11,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:51:11,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:51:11,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:51:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:51:11,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 09:51:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:51:11,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:51:11,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:51:11,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:51:11,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:51:11,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 09:51:11,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:51:11,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874434366] [2022-07-21 09:51:11,277 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-07-21 09:51:11,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445476088] [2022-07-21 09:51:11,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:51:11,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:51:11,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:51:11,280 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:51:11,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-07-21 09:51:12,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:51:12,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 3565 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 09:51:12,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:51:12,260 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2022-07-21 09:51:12,260 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:51:12,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445476088] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:51:12,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:51:12,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 09:51:12,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203347012] [2022-07-21 09:51:12,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:51:12,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 09:51:12,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:51:12,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 09:51:12,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:51:12,262 INFO L87 Difference]: Start difference. First operand 870 states and 1415 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-21 09:51:12,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:51:12,309 INFO L93 Difference]: Finished difference Result 1674 states and 2738 transitions. [2022-07-21 09:51:12,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 09:51:12,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 289 [2022-07-21 09:51:12,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:51:12,315 INFO L225 Difference]: With dead ends: 1674 [2022-07-21 09:51:12,315 INFO L226 Difference]: Without dead ends: 822 [2022-07-21 09:51:12,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:51:12,320 INFO L413 NwaCegarLoop]: 626 mSDtfsCounter, 0 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:51:12,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1247 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:51:12,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-07-21 09:51:12,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 818. [2022-07-21 09:51:12,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 563 states have (on average 1.191829484902309) internal successors, (671), 571 states have internal predecessors, (671), 188 states have call successors, (188), 44 states have call predecessors, (188), 65 states have return successors, (467), 203 states have call predecessors, (467), 186 states have call successors, (467) [2022-07-21 09:51:12,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1326 transitions. [2022-07-21 09:51:12,373 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1326 transitions. Word has length 289 [2022-07-21 09:51:12,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:51:12,374 INFO L495 AbstractCegarLoop]: Abstraction has 818 states and 1326 transitions. [2022-07-21 09:51:12,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-21 09:51:12,374 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1326 transitions. [2022-07-21 09:51:12,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2022-07-21 09:51:12,377 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:51:12,377 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:51:12,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-07-21 09:51:12,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-21 09:51:12,603 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:51:12,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:51:12,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1787329106, now seen corresponding path program 1 times [2022-07-21 09:51:12,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:51:12,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577555795] [2022-07-21 09:51:12,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:51:12,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:51:12,672 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:51:12,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [23082688] [2022-07-21 09:51:12,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:51:12,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:51:12,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:51:12,675 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:51:12,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-07-21 09:51:13,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:51:13,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 3615 conjuncts, 42 conjunts are in the unsatisfiable core [2022-07-21 09:51:13,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:51:13,939 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 296 proven. 11 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2022-07-21 09:51:13,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:51:15,387 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 76 proven. 45 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2022-07-21 09:51:15,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:51:15,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577555795] [2022-07-21 09:51:15,388 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:51:15,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23082688] [2022-07-21 09:51:15,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23082688] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:51:15,388 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:51:15,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 21] total 30 [2022-07-21 09:51:15,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707263766] [2022-07-21 09:51:15,388 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:51:15,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-21 09:51:15,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:51:15,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-21 09:51:15,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=799, Unknown=0, NotChecked=0, Total=870 [2022-07-21 09:51:15,390 INFO L87 Difference]: Start difference. First operand 818 states and 1326 transitions. Second operand has 30 states, 26 states have (on average 6.6923076923076925) internal successors, (174), 21 states have internal predecessors, (174), 8 states have call successors, (42), 3 states have call predecessors, (42), 10 states have return successors, (45), 12 states have call predecessors, (45), 7 states have call successors, (45) [2022-07-21 09:51:16,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:51:16,685 INFO L93 Difference]: Finished difference Result 1585 states and 2649 transitions. [2022-07-21 09:51:16,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 09:51:16,686 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 26 states have (on average 6.6923076923076925) internal successors, (174), 21 states have internal predecessors, (174), 8 states have call successors, (42), 3 states have call predecessors, (42), 10 states have return successors, (45), 12 states have call predecessors, (45), 7 states have call successors, (45) Word has length 307 [2022-07-21 09:51:16,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:51:16,692 INFO L225 Difference]: With dead ends: 1585 [2022-07-21 09:51:16,692 INFO L226 Difference]: Without dead ends: 915 [2022-07-21 09:51:16,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 583 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=99, Invalid=1091, Unknown=0, NotChecked=0, Total=1190 [2022-07-21 09:51:16,697 INFO L413 NwaCegarLoop]: 650 mSDtfsCounter, 23 mSDsluCounter, 13330 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 13980 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:51:16,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 13980 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1218 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 09:51:16,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2022-07-21 09:51:16,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 832. [2022-07-21 09:51:16,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 577 states have (on average 1.1958405545927209) internal successors, (690), 582 states have internal predecessors, (690), 188 states have call successors, (188), 44 states have call predecessors, (188), 65 states have return successors, (464), 206 states have call predecessors, (464), 186 states have call successors, (464) [2022-07-21 09:51:16,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1342 transitions. [2022-07-21 09:51:16,757 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1342 transitions. Word has length 307 [2022-07-21 09:51:16,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:51:16,757 INFO L495 AbstractCegarLoop]: Abstraction has 832 states and 1342 transitions. [2022-07-21 09:51:16,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 26 states have (on average 6.6923076923076925) internal successors, (174), 21 states have internal predecessors, (174), 8 states have call successors, (42), 3 states have call predecessors, (42), 10 states have return successors, (45), 12 states have call predecessors, (45), 7 states have call successors, (45) [2022-07-21 09:51:16,758 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1342 transitions. [2022-07-21 09:51:16,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2022-07-21 09:51:16,761 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:51:16,761 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:51:16,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-07-21 09:51:16,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:51:16,975 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:51:16,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:51:16,976 INFO L85 PathProgramCache]: Analyzing trace with hash -111288786, now seen corresponding path program 1 times [2022-07-21 09:51:16,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:51:16,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48010166] [2022-07-21 09:51:16,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:51:16,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:51:17,039 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:51:17,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [30240375] [2022-07-21 09:51:17,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:51:17,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:51:17,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:51:17,042 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:51:17,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-07-21 09:51:18,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:51:18,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 3612 conjuncts, 91 conjunts are in the unsatisfiable core [2022-07-21 09:51:18,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:51:18,127 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:51:18,572 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-21 09:51:18,573 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-21 09:51:21,454 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-21 09:51:21,458 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-07-21 09:51:27,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:51:27,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:51:27,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:51:27,677 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-07-21 09:51:27,697 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-21 09:51:27,697 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-21 09:51:27,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:51:27,709 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-21 09:51:27,941 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_11073 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_11073) |c_#memory_int|)) is different from true [2022-07-21 09:51:28,610 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 273 proven. 31 refuted. 3 times theorem prover too weak. 206 trivial. 0 not checked. [2022-07-21 09:51:28,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:51:29,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:51:29,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48010166] [2022-07-21 09:51:29,274 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:51:29,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30240375] [2022-07-21 09:51:29,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30240375] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:51:29,274 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:51:29,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2022-07-21 09:51:29,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453961755] [2022-07-21 09:51:29,274 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-21 09:51:29,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-21 09:51:29,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:51:29,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-21 09:51:29,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=648, Unknown=21, NotChecked=52, Total=812 [2022-07-21 09:51:29,276 INFO L87 Difference]: Start difference. First operand 832 states and 1342 transitions. Second operand has 28 states, 26 states have (on average 5.846153846153846) internal successors, (152), 24 states have internal predecessors, (152), 14 states have call successors, (36), 7 states have call predecessors, (36), 10 states have return successors, (34), 11 states have call predecessors, (34), 14 states have call successors, (34) [2022-07-21 09:51:36,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:51:36,355 INFO L93 Difference]: Finished difference Result 1897 states and 3219 transitions. [2022-07-21 09:51:36,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-21 09:51:36,356 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 5.846153846153846) internal successors, (152), 24 states have internal predecessors, (152), 14 states have call successors, (36), 7 states have call predecessors, (36), 10 states have return successors, (34), 11 states have call predecessors, (34), 14 states have call successors, (34) Word has length 297 [2022-07-21 09:51:36,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:51:36,364 INFO L225 Difference]: With dead ends: 1897 [2022-07-21 09:51:36,364 INFO L226 Difference]: Without dead ends: 1161 [2022-07-21 09:51:36,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 437 SyntacticMatches, 8 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=134, Invalid=1023, Unknown=37, NotChecked=66, Total=1260 [2022-07-21 09:51:36,368 INFO L413 NwaCegarLoop]: 642 mSDtfsCounter, 343 mSDsluCounter, 3812 mSDsCounter, 0 mSdLazyCounter, 3348 mSolverCounterSat, 506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 4454 SdHoareTripleChecker+Invalid, 9067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 3348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5213 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:51:36,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 4454 Invalid, 9067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [506 Valid, 3348 Invalid, 0 Unknown, 5213 Unchecked, 5.0s Time] [2022-07-21 09:51:36,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2022-07-21 09:51:36,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 859. [2022-07-21 09:51:36,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 599 states have (on average 1.1953255425709517) internal successors, (716), 606 states have internal predecessors, (716), 190 states have call successors, (190), 44 states have call predecessors, (190), 68 states have return successors, (500), 209 states have call predecessors, (500), 188 states have call successors, (500) [2022-07-21 09:51:36,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1406 transitions. [2022-07-21 09:51:36,435 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1406 transitions. Word has length 297 [2022-07-21 09:51:36,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:51:36,435 INFO L495 AbstractCegarLoop]: Abstraction has 859 states and 1406 transitions. [2022-07-21 09:51:36,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 5.846153846153846) internal successors, (152), 24 states have internal predecessors, (152), 14 states have call successors, (36), 7 states have call predecessors, (36), 10 states have return successors, (34), 11 states have call predecessors, (34), 14 states have call successors, (34) [2022-07-21 09:51:36,436 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1406 transitions. [2022-07-21 09:51:36,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-07-21 09:51:36,439 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:51:36,439 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-21 09:51:36,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-07-21 09:51:36,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-07-21 09:51:36,644 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:51:36,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:51:36,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1621272779, now seen corresponding path program 2 times [2022-07-21 09:51:36,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:51:36,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000561981] [2022-07-21 09:51:36,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:51:36,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:51:36,705 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:51:36,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1984564558] [2022-07-21 09:51:36,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:51:36,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:51:36,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:51:36,708 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:51:36,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-07-21 09:51:38,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:51:38,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:51:38,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 3573 conjuncts, 124 conjunts are in the unsatisfiable core [2022-07-21 09:51:38,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:51:40,529 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_11479 Int) (v_ArrVal_11480 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_11480)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_11479))))) is different from true [2022-07-21 09:51:42,549 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_11479 Int) (v_ArrVal_11480 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_11479))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_11480))))) is different from true [2022-07-21 09:51:42,622 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-07-21 09:51:42,623 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 42 [2022-07-21 09:51:42,653 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-07-21 09:51:42,653 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 36 [2022-07-21 09:51:45,461 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_11483 Int) (v_ArrVal_11485 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_11485)) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_11483)) |c_#memory_$Pointer$.base|))) is different from true