./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_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_remove_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 1ebada516f0ccae5e55b91f6e0fe5802f70171054dc79c047f46877ad506c65e --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 09:49:01,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 09:49:01,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 09:49:01,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 09:49:01,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 09:49:01,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 09:49:01,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 09:49:01,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 09:49:01,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 09:49:01,047 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 09:49:01,048 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 09:49:01,049 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 09:49:01,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 09:49:01,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 09:49:01,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 09:49:01,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 09:49:01,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 09:49:01,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 09:49:01,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 09:49:01,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 09:49:01,060 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 09:49:01,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 09:49:01,061 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 09:49:01,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 09:49:01,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 09:49:01,064 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 09:49:01,065 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 09:49:01,065 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 09:49:01,065 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 09:49:01,066 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 09:49:01,066 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 09:49:01,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 09:49:01,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 09:49:01,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 09:49:01,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 09:49:01,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 09:49:01,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 09:49:01,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 09:49:01,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 09:49:01,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 09:49:01,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 09:49:01,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 09:49:01,084 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 09:49:01,115 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 09:49:01,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 09:49:01,117 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 09:49:01,117 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 09:49:01,117 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 09:49:01,117 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 09:49:01,118 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 09:49:01,118 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 09:49:01,118 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 09:49:01,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 09:49:01,119 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 09:49:01,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 09:49:01,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 09:49:01,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 09:49:01,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 09:49:01,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 09:49:01,120 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 09:49:01,120 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 09:49:01,120 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 09:49:01,120 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 09:49:01,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 09:49:01,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:49:01,121 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 09:49:01,121 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 09:49:01,121 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 09:49:01,121 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 09:49:01,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 09:49:01,122 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 09:49:01,122 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 09:49:01,122 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 09:49:01,122 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ebada516f0ccae5e55b91f6e0fe5802f70171054dc79c047f46877ad506c65e [2022-07-21 09:49:01,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 09:49:01,401 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 09:49:01,403 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 09:49:01,404 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 09:49:01,405 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 09:49:01,406 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i [2022-07-21 09:49:01,445 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58576ba59/8fc7ede4af9849c0bff3a22150c79f99/FLAGb0bda3f51 [2022-07-21 09:49:02,065 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 09:49:02,066 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i [2022-07-21 09:49:02,095 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58576ba59/8fc7ede4af9849c0bff3a22150c79f99/FLAGb0bda3f51 [2022-07-21 09:49:02,485 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58576ba59/8fc7ede4af9849c0bff3a22150c79f99 [2022-07-21 09:49:02,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 09:49:02,487 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 09:49:02,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 09:49:02,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 09:49:02,491 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 09:49:02,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:49:02" (1/1) ... [2022-07-21 09:49:02,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6678f542 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:49:02, skipping insertion in model container [2022-07-21 09:49:02,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:49:02" (1/1) ... [2022-07-21 09:49:02,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 09:49:02,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 09:49:02,740 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_remove_harness.i[4499,4512] [2022-07-21 09:49:02,746 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_remove_harness.i[4559,4572] [2022-07-21 09:49:03,375 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,376 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,377 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,378 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,379 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,391 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,392 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,393 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,393 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,394 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,395 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,395 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,395 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,589 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:49:03,590 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:49:03,591 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:49:03,591 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:49:03,592 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:49:03,593 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:49:03,593 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:49:03,594 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:49:03,594 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:49:03,594 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:49:03,686 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:49:03,724 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,728 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,788 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,789 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,790 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,790 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,790 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,791 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,792 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,793 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,793 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,793 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,793 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,793 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,794 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,800 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,802 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,802 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,802 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,805 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,805 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,811 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,812 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,812 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,823 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,823 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,824 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,828 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:49:03,864 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 09:49:03,892 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_remove_harness.i[4499,4512] [2022-07-21 09:49:03,893 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_remove_harness.i[4559,4572] [2022-07-21 09:49:03,926 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,927 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,927 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,927 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,928 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,932 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,938 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,939 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,939 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,940 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,940 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,940 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,940 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:03,966 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:49:03,967 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:49:03,967 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:49:03,968 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:49:03,968 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:49:03,968 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:49:03,969 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:49:03,969 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:49:03,970 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:49:03,970 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:49:03,999 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:49:04,028 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:04,032 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:04,056 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:04,057 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:04,057 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:04,058 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:04,058 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:04,058 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:04,059 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:04,059 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:04,060 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:04,060 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:04,060 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:04,060 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:04,061 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:04,061 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:04,062 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:04,062 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:04,063 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:04,066 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:04,066 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:04,071 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:04,071 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:04,072 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:04,078 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:04,079 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:04,079 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:49:04,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:49:04,249 INFO L208 MainTranslator]: Completed translation [2022-07-21 09:49:04,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:49:04 WrapperNode [2022-07-21 09:49:04,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 09:49:04,251 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 09:49:04,251 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 09:49:04,251 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 09:49:04,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:49:04" (1/1) ... [2022-07-21 09:49:04,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:49:04" (1/1) ... [2022-07-21 09:49:04,430 INFO L137 Inliner]: procedures = 697, calls = 1921, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 1060 [2022-07-21 09:49:04,431 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 09:49:04,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 09:49:04,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 09:49:04,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 09:49:04,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:49:04" (1/1) ... [2022-07-21 09:49:04,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:49:04" (1/1) ... [2022-07-21 09:49:04,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:49:04" (1/1) ... [2022-07-21 09:49:04,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:49:04" (1/1) ... [2022-07-21 09:49:04,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:49:04" (1/1) ... [2022-07-21 09:49:04,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:49:04" (1/1) ... [2022-07-21 09:49:04,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:49:04" (1/1) ... [2022-07-21 09:49:04,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 09:49:04,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 09:49:04,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 09:49:04,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 09:49:04,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:49:04" (1/1) ... [2022-07-21 09:49:04,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:49:04,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:49:04,577 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 09:49:04,597 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 09:49:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2022-07-21 09:49:04,610 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2022-07-21 09:49:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-07-21 09:49:04,610 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-07-21 09:49:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 09:49:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-07-21 09:49:04,610 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-07-21 09:49:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-21 09:49:04,611 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-21 09:49:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-21 09:49:04,611 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-21 09:49:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2022-07-21 09:49:04,611 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2022-07-21 09:49:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-21 09:49:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 09:49:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-21 09:49:04,614 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-21 09:49:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 09:49:04,615 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 09:49:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2022-07-21 09:49:04,615 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2022-07-21 09:49:04,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 09:49:04,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 09:49:04,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 09:49:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2022-07-21 09:49:04,620 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2022-07-21 09:49:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-07-21 09:49:04,620 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-07-21 09:49:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 09:49:04,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 09:49:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-21 09:49:04,621 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-21 09:49:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-21 09:49:04,621 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-21 09:49:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-21 09:49:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-07-21 09:49:04,621 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-07-21 09:49:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-07-21 09:49:04,621 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-07-21 09:49:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-07-21 09:49:04,622 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-07-21 09:49:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-21 09:49:04,622 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-21 09:49:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 09:49:04,622 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 09:49:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-07-21 09:49:04,622 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-07-21 09:49:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2022-07-21 09:49:04,622 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2022-07-21 09:49:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 09:49:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 09:49:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 09:49:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2022-07-21 09:49:04,623 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2022-07-21 09:49:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-21 09:49:04,623 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-21 09:49:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-21 09:49:04,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-21 09:49:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 09:49:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-07-21 09:49:04,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-07-21 09:49:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2022-07-21 09:49:04,624 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2022-07-21 09:49:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-21 09:49:04,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-21 09:49:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 09:49:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2022-07-21 09:49:04,624 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2022-07-21 09:49:04,931 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 09:49:04,933 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 09:49:06,460 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 09:49:06,468 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 09:49:06,468 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-07-21 09:49:06,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:49:06 BoogieIcfgContainer [2022-07-21 09:49:06,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 09:49:06,472 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 09:49:06,472 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 09:49:06,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 09:49:06,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:49:02" (1/3) ... [2022-07-21 09:49:06,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@774f2353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:49:06, skipping insertion in model container [2022-07-21 09:49:06,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:49:04" (2/3) ... [2022-07-21 09:49:06,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@774f2353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:49:06, skipping insertion in model container [2022-07-21 09:49:06,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:49:06" (3/3) ... [2022-07-21 09:49:06,476 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_remove_harness.i [2022-07-21 09:49:06,485 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 09:49:06,485 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 09:49:06,523 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 09:49:06,527 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@44e67e97, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@24ed19e [2022-07-21 09:49:06,527 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 09:49:06,531 INFO L276 IsEmpty]: Start isEmpty. Operand has 460 states, 270 states have (on average 1.2703703703703704) internal successors, (343), 275 states have internal predecessors, (343), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2022-07-21 09:49:06,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-21 09:49:06,542 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:49:06,543 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, 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] [2022-07-21 09:49:06,543 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:49:06,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:49:06,547 INFO L85 PathProgramCache]: Analyzing trace with hash 207530193, now seen corresponding path program 1 times [2022-07-21 09:49:06,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:49:06,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920265949] [2022-07-21 09:49:06,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:06,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:49:06,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:06,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:49:06,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:06,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:49:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:06,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 09:49:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:07,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 09:49:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:07,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:49:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:07,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:49:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:07,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 09:49:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:07,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:49:07,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:07,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:49:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:07,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 09:49:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:07,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 09:49:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:07,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 09:49:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:07,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:49:07,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:07,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 09:49:07,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:07,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:49:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:07,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 09:49:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:07,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 09:49:07,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:07,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 09:49:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:07,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 09:49:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:07,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 09:49:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:07,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 09:49:07,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:07,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-21 09:49:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:07,168 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-07-21 09:49:07,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:49:07,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920265949] [2022-07-21 09:49:07,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920265949] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:49:07,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:49:07,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 09:49:07,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599340280] [2022-07-21 09:49:07,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:49:07,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:49:07,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:49:07,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:49:07,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:49:07,193 INFO L87 Difference]: Start difference. First operand has 460 states, 270 states have (on average 1.2703703703703704) internal successors, (343), 275 states have internal predecessors, (343), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 09:49:08,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:49:08,777 INFO L93 Difference]: Finished difference Result 1349 states and 2508 transitions. [2022-07-21 09:49:08,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:49:08,779 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 141 [2022-07-21 09:49:08,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:49:08,810 INFO L225 Difference]: With dead ends: 1349 [2022-07-21 09:49:08,810 INFO L226 Difference]: Without dead ends: 895 [2022-07-21 09:49:08,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:49:08,824 INFO L413 NwaCegarLoop]: 856 mSDtfsCounter, 535 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 686 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 1612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 686 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 09:49:08,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 1543 Invalid, 1612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [686 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 09:49:08,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2022-07-21 09:49:08,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 453. [2022-07-21 09:49:08,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 265 states have (on average 1.2339622641509433) internal successors, (327), 268 states have internal predecessors, (327), 160 states have call successors, (160), 27 states have call predecessors, (160), 26 states have return successors, (158), 158 states have call predecessors, (158), 158 states have call successors, (158) [2022-07-21 09:49:08,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 645 transitions. [2022-07-21 09:49:08,925 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 645 transitions. Word has length 141 [2022-07-21 09:49:08,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:49:08,926 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 645 transitions. [2022-07-21 09:49:08,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 09:49:08,926 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 645 transitions. [2022-07-21 09:49:08,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 09:49:08,930 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:49:08,930 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 2, 2, 2, 2, 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 09:49:08,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 09:49:08,931 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:49:08,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:49:08,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1080700984, now seen corresponding path program 1 times [2022-07-21 09:49:08,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:49:08,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052246342] [2022-07-21 09:49:08,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:08,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:49:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:09,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:49:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:09,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:49:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:09,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 09:49:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:09,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 09:49:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:09,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:49:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:09,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:49:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:09,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 09:49:09,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:09,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:49:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:09,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:49:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:09,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 09:49:09,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:09,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 09:49:09,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:09,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 09:49:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:09,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:49:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:09,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 09:49:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:09,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:49:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:09,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 09:49:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:09,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 09:49:09,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:09,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 09:49:09,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:09,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 09:49:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:09,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 09:49:09,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:09,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 09:49:09,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:09,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-21 09:49:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:09,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-21 09:49:09,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:09,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 09:49:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:09,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-21 09:49:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:09,321 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-07-21 09:49:09,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:49:09,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052246342] [2022-07-21 09:49:09,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052246342] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:49:09,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765367604] [2022-07-21 09:49:09,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:09,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:49:09,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:49:09,361 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 09:49:09,380 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 09:49:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:09,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 2501 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 09:49:09,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:49:09,905 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-07-21 09:49:09,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:49:09,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765367604] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:49:09,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:49:09,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-21 09:49:09,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298433219] [2022-07-21 09:49:09,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:49:09,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:49:09,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:49:09,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:49:09,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-21 09:49:09,908 INFO L87 Difference]: Start difference. First operand 453 states and 645 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-07-21 09:49:11,798 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 09:49:13,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:49:13,020 INFO L93 Difference]: Finished difference Result 872 states and 1259 transitions. [2022-07-21 09:49:13,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:49:13,021 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 156 [2022-07-21 09:49:13,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:49:13,024 INFO L225 Difference]: With dead ends: 872 [2022-07-21 09:49:13,024 INFO L226 Difference]: Without dead ends: 455 [2022-07-21 09:49:13,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 199 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 09:49:13,027 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 665 mSDsluCounter, 1651 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 2232 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:49:13,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 2232 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-21 09:49:13,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2022-07-21 09:49:13,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 455. [2022-07-21 09:49:13,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 266 states have (on average 1.2330827067669172) internal successors, (328), 270 states have internal predecessors, (328), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (171), 158 states have call predecessors, (171), 158 states have call successors, (171) [2022-07-21 09:49:13,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 659 transitions. [2022-07-21 09:49:13,050 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 659 transitions. Word has length 156 [2022-07-21 09:49:13,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:49:13,051 INFO L495 AbstractCegarLoop]: Abstraction has 455 states and 659 transitions. [2022-07-21 09:49:13,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-07-21 09:49:13,051 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 659 transitions. [2022-07-21 09:49:13,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-21 09:49:13,053 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:49:13,053 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:49:13,080 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 09:49:13,267 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 09:49:13,268 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:49:13,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:49:13,268 INFO L85 PathProgramCache]: Analyzing trace with hash 651465952, now seen corresponding path program 1 times [2022-07-21 09:49:13,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:49:13,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185409779] [2022-07-21 09:49:13,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:13,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:49:13,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:13,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:49:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:13,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:49:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:13,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 09:49:13,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:13,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 09:49:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:13,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:49:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:13,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:49:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:13,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 09:49:13,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:13,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:49:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:13,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:49:13,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:13,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 09:49:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:13,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:49:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:13,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 09:49:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:13,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 09:49:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:13,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:49:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:13,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 09:49:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:13,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:49:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:13,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 09:49:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:13,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 09:49:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:13,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 09:49:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:13,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-21 09:49:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:13,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 09:49:13,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:13,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-21 09:49:13,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:13,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-21 09:49:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:13,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-21 09:49:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:13,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-21 09:49:13,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:13,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-21 09:49:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:13,672 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2022-07-21 09:49:13,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:49:13,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185409779] [2022-07-21 09:49:13,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185409779] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:49:13,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090373380] [2022-07-21 09:49:13,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:13,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:49:13,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:49:13,674 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 09:49:13,676 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 09:49:14,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:14,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 2551 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 09:49:14,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:49:14,201 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-07-21 09:49:14,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:49:14,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090373380] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:49:14,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:49:14,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-07-21 09:49:14,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953237892] [2022-07-21 09:49:14,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:49:14,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:49:14,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:49:14,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:49:14,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-07-21 09:49:14,203 INFO L87 Difference]: Start difference. First operand 455 states and 659 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-21 09:49:17,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:49:17,512 INFO L93 Difference]: Finished difference Result 895 states and 1330 transitions. [2022-07-21 09:49:17,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:49:17,512 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 164 [2022-07-21 09:49:17,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:49:17,515 INFO L225 Difference]: With dead ends: 895 [2022-07-21 09:49:17,515 INFO L226 Difference]: Without dead ends: 476 [2022-07-21 09:49:17,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2022-07-21 09:49:17,518 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 691 mSDsluCounter, 2717 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 3294 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:49:17,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 3294 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-21 09:49:17,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2022-07-21 09:49:17,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 474. [2022-07-21 09:49:17,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 282 states have (on average 1.2411347517730495) internal successors, (350), 286 states have internal predecessors, (350), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (190), 161 states have call predecessors, (190), 160 states have call successors, (190) [2022-07-21 09:49:17,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 702 transitions. [2022-07-21 09:49:17,540 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 702 transitions. Word has length 164 [2022-07-21 09:49:17,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:49:17,540 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 702 transitions. [2022-07-21 09:49:17,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-21 09:49:17,540 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 702 transitions. [2022-07-21 09:49:17,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 09:49:17,542 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:49:17,542 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:49:17,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-21 09:49:17,762 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 09:49:17,763 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:49:17,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:49:17,763 INFO L85 PathProgramCache]: Analyzing trace with hash 706817890, now seen corresponding path program 1 times [2022-07-21 09:49:17,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:49:17,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164616661] [2022-07-21 09:49:17,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:17,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:49:17,831 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:49:17,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [85670697] [2022-07-21 09:49:17,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:17,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:49:17,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:49:17,833 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 09:49:17,834 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 09:49:18,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:18,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 2692 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 09:49:18,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:49:18,402 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-07-21 09:49:18,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:49:18,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:49:18,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164616661] [2022-07-21 09:49:18,403 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:49:18,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85670697] [2022-07-21 09:49:18,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85670697] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:49:18,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:49:18,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 09:49:18,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630828385] [2022-07-21 09:49:18,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:49:18,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:49:18,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:49:18,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:49:18,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:49:18,405 INFO L87 Difference]: Start difference. First operand 474 states and 702 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-21 09:49:20,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:49:20,118 INFO L93 Difference]: Finished difference Result 920 states and 1403 transitions. [2022-07-21 09:49:20,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:49:20,119 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 179 [2022-07-21 09:49:20,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:49:20,122 INFO L225 Difference]: With dead ends: 920 [2022-07-21 09:49:20,122 INFO L226 Difference]: Without dead ends: 482 [2022-07-21 09:49:20,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-07-21 09:49:20,125 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 689 mSDsluCounter, 2174 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 2749 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:49:20,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 2749 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 09:49:20,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2022-07-21 09:49:20,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 474. [2022-07-21 09:49:20,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 282 states have (on average 1.2411347517730495) internal successors, (350), 286 states have internal predecessors, (350), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (190), 161 states have call predecessors, (190), 160 states have call successors, (190) [2022-07-21 09:49:20,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 702 transitions. [2022-07-21 09:49:20,144 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 702 transitions. Word has length 179 [2022-07-21 09:49:20,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:49:20,145 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 702 transitions. [2022-07-21 09:49:20,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-21 09:49:20,145 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 702 transitions. [2022-07-21 09:49:20,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-07-21 09:49:20,146 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:49:20,147 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:49:20,184 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 09:49:20,367 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 09:49:20,368 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:49:20,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:49:20,369 INFO L85 PathProgramCache]: Analyzing trace with hash -548515061, now seen corresponding path program 1 times [2022-07-21 09:49:20,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:49:20,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799715533] [2022-07-21 09:49:20,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:20,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:49:20,420 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:49:20,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [965135690] [2022-07-21 09:49:20,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:20,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:49:20,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:49:20,422 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 09:49:20,423 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 09:49:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:20,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 2764 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 09:49:20,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:49:21,026 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-07-21 09:49:21,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:49:21,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:49:21,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799715533] [2022-07-21 09:49:21,026 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:49:21,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965135690] [2022-07-21 09:49:21,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965135690] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:49:21,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:49:21,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 09:49:21,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810080142] [2022-07-21 09:49:21,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:49:21,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 09:49:21,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:49:21,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 09:49:21,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 09:49:21,029 INFO L87 Difference]: Start difference. First operand 474 states and 702 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2022-07-21 09:49:22,265 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 09:49:24,527 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 09:49:24,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:49:24,900 INFO L93 Difference]: Finished difference Result 930 states and 1407 transitions. [2022-07-21 09:49:24,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 09:49:24,901 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) Word has length 195 [2022-07-21 09:49:24,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:49:24,904 INFO L225 Difference]: With dead ends: 930 [2022-07-21 09:49:24,904 INFO L226 Difference]: Without dead ends: 492 [2022-07-21 09:49:24,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 189 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 09:49:24,906 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 754 mSDsluCounter, 3152 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 3706 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-21 09:49:24,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 3706 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-07-21 09:49:24,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2022-07-21 09:49:24,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 474. [2022-07-21 09:49:24,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 282 states have (on average 1.2411347517730495) internal successors, (350), 286 states have internal predecessors, (350), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (190), 161 states have call predecessors, (190), 160 states have call successors, (190) [2022-07-21 09:49:24,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 702 transitions. [2022-07-21 09:49:24,926 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 702 transitions. Word has length 195 [2022-07-21 09:49:24,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:49:24,927 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 702 transitions. [2022-07-21 09:49:24,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2022-07-21 09:49:24,927 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 702 transitions. [2022-07-21 09:49:24,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-07-21 09:49:24,935 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:49:24,938 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:49:24,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 09:49:25,160 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 09:49:25,160 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:49:25,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:49:25,161 INFO L85 PathProgramCache]: Analyzing trace with hash -2018600789, now seen corresponding path program 2 times [2022-07-21 09:49:25,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:49:25,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567585143] [2022-07-21 09:49:25,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:25,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:49:25,224 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:49:25,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1223901904] [2022-07-21 09:49:25,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:49:25,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:49:25,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:49:25,240 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 09:49:25,283 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 09:49:26,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:49:26,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:49:26,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 2905 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 09:49:26,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:49:26,096 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-07-21 09:49:26,097 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:49:26,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:49:26,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567585143] [2022-07-21 09:49:26,097 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:49:26,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223901904] [2022-07-21 09:49:26,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223901904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:49:26,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:49:26,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 09:49:26,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630285966] [2022-07-21 09:49:26,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:49:26,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:49:26,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:49:26,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:49:26,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:49:26,101 INFO L87 Difference]: Start difference. First operand 474 states and 702 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 7 states have internal predecessors, (86), 4 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2022-07-21 09:49:28,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:49:28,215 INFO L93 Difference]: Finished difference Result 878 states and 1321 transitions. [2022-07-21 09:49:28,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:49:28,216 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 7 states have internal predecessors, (86), 4 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 210 [2022-07-21 09:49:28,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:49:28,219 INFO L225 Difference]: With dead ends: 878 [2022-07-21 09:49:28,219 INFO L226 Difference]: Without dead ends: 476 [2022-07-21 09:49:28,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 206 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 09:49:28,222 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 682 mSDsluCounter, 2192 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 2771 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:49:28,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 2771 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-21 09:49:28,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2022-07-21 09:49:28,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 476. [2022-07-21 09:49:28,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 283 states have (on average 1.2402826855123674) internal successors, (351), 288 states have internal predecessors, (351), 162 states have call successors, (162), 27 states have call predecessors, (162), 29 states have return successors, (201), 161 states have call predecessors, (201), 160 states have call successors, (201) [2022-07-21 09:49:28,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 714 transitions. [2022-07-21 09:49:28,242 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 714 transitions. Word has length 210 [2022-07-21 09:49:28,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:49:28,243 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 714 transitions. [2022-07-21 09:49:28,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 7 states have internal predecessors, (86), 4 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2022-07-21 09:49:28,243 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 714 transitions. [2022-07-21 09:49:28,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-07-21 09:49:28,244 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:49:28,245 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 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, 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 09:49:28,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 09:49:28,466 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 09:49:28,466 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:49:28,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:49:28,467 INFO L85 PathProgramCache]: Analyzing trace with hash -914550263, now seen corresponding path program 1 times [2022-07-21 09:49:28,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:49:28,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549116862] [2022-07-21 09:49:28,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:28,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:49:28,525 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:49:28,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1821136959] [2022-07-21 09:49:28,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:28,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:49:28,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:49:28,540 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 09:49:28,567 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 09:49:29,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:29,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 3096 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 09:49:29,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:49:29,204 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-07-21 09:49:29,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:49:29,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:49:29,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549116862] [2022-07-21 09:49:29,205 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:49:29,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821136959] [2022-07-21 09:49:29,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821136959] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:49:29,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:49:29,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 09:49:29,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959112036] [2022-07-21 09:49:29,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:49:29,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:49:29,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:49:29,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:49:29,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:49:29,206 INFO L87 Difference]: Start difference. First operand 476 states and 714 transitions. Second operand has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2022-07-21 09:49:32,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:49:32,351 INFO L93 Difference]: Finished difference Result 883 states and 1346 transitions. [2022-07-21 09:49:32,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:49:32,351 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) Word has length 233 [2022-07-21 09:49:32,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:49:32,355 INFO L225 Difference]: With dead ends: 883 [2022-07-21 09:49:32,356 INFO L226 Difference]: Without dead ends: 479 [2022-07-21 09:49:32,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 229 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 09:49:32,358 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 706 mSDsluCounter, 2703 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 3276 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:49:32,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 3276 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-21 09:49:32,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-07-21 09:49:32,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 477. [2022-07-21 09:49:32,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 284 states have (on average 1.2394366197183098) internal successors, (352), 289 states have internal predecessors, (352), 162 states have call successors, (162), 27 states have call predecessors, (162), 29 states have return successors, (201), 161 states have call predecessors, (201), 160 states have call successors, (201) [2022-07-21 09:49:32,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 715 transitions. [2022-07-21 09:49:32,376 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 715 transitions. Word has length 233 [2022-07-21 09:49:32,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:49:32,376 INFO L495 AbstractCegarLoop]: Abstraction has 477 states and 715 transitions. [2022-07-21 09:49:32,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2022-07-21 09:49:32,377 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 715 transitions. [2022-07-21 09:49:32,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-07-21 09:49:32,379 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:49:32,379 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 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, 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 09:49:32,404 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-21 09:49:32,599 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 09:49:32,600 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:49:32,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:49:32,600 INFO L85 PathProgramCache]: Analyzing trace with hash -2024605444, now seen corresponding path program 1 times [2022-07-21 09:49:32,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:49:32,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688910518] [2022-07-21 09:49:32,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:32,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:49:32,659 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:49:32,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1312402210] [2022-07-21 09:49:32,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:32,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:49:32,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:49:32,661 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 09:49:32,688 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 09:49:33,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:49:33,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 3027 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 09:49:33,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:49:33,399 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 177 proven. 3 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-07-21 09:49:33,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:49:33,730 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-07-21 09:49:33,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:49:33,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688910518] [2022-07-21 09:49:33,730 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:49:33,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312402210] [2022-07-21 09:49:33,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312402210] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:49:33,731 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:49:33,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-07-21 09:49:33,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370256903] [2022-07-21 09:49:33,731 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:49:33,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 09:49:33,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:49:33,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 09:49:33,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-21 09:49:33,733 INFO L87 Difference]: Start difference. First operand 477 states and 715 transitions. Second operand has 14 states, 12 states have (on average 10.333333333333334) internal successors, (124), 14 states have internal predecessors, (124), 9 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (48), 5 states have call predecessors, (48), 9 states have call successors, (48) [2022-07-21 09:49:36,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:49:36,727 INFO L93 Difference]: Finished difference Result 901 states and 1380 transitions. [2022-07-21 09:49:36,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:49:36,728 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 10.333333333333334) internal successors, (124), 14 states have internal predecessors, (124), 9 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (48), 5 states have call predecessors, (48), 9 states have call successors, (48) Word has length 234 [2022-07-21 09:49:36,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:49:36,731 INFO L225 Difference]: With dead ends: 901 [2022-07-21 09:49:36,731 INFO L226 Difference]: Without dead ends: 496 [2022-07-21 09:49:36,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 457 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 09:49:36,734 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 1170 mSDsluCounter, 3186 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 3744 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-21 09:49:36,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 3744 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [457 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-21 09:49:36,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2022-07-21 09:49:36,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 490. [2022-07-21 09:49:36,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 296 states have (on average 1.2466216216216217) internal successors, (369), 300 states have internal predecessors, (369), 163 states have call successors, (163), 27 states have call predecessors, (163), 29 states have return successors, (202), 163 states have call predecessors, (202), 161 states have call successors, (202) [2022-07-21 09:49:36,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 734 transitions. [2022-07-21 09:49:36,786 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 734 transitions. Word has length 234 [2022-07-21 09:49:36,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:49:36,786 INFO L495 AbstractCegarLoop]: Abstraction has 490 states and 734 transitions. [2022-07-21 09:49:36,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 10.333333333333334) internal successors, (124), 14 states have internal predecessors, (124), 9 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (48), 5 states have call predecessors, (48), 9 states have call successors, (48) [2022-07-21 09:49:36,787 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 734 transitions. [2022-07-21 09:49:36,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-07-21 09:49:36,789 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:49:36,789 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 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, 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 09:49:36,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-21 09:49:37,022 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 09:49:37,023 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:49:37,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:49:37,023 INFO L85 PathProgramCache]: Analyzing trace with hash -729173346, now seen corresponding path program 2 times [2022-07-21 09:49:37,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:49:37,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255712761] [2022-07-21 09:49:37,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:37,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:49:37,089 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:49:37,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [247265852] [2022-07-21 09:49:37,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:49:37,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:49:37,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:49:37,091 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 09:49:37,092 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 09:49:37,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:49:37,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:49:37,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 3309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 09:49:37,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:49:37,925 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-07-21 09:49:37,925 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:49:37,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:49:37,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255712761] [2022-07-21 09:49:37,925 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:49:37,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247265852] [2022-07-21 09:49:37,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247265852] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:49:37,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:49:37,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 09:49:37,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075328462] [2022-07-21 09:49:37,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:49:37,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:49:37,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:49:37,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:49:37,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:49:37,929 INFO L87 Difference]: Start difference. First operand 490 states and 734 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 5 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2022-07-21 09:49:40,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:49:40,663 INFO L93 Difference]: Finished difference Result 912 states and 1378 transitions. [2022-07-21 09:49:40,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:49:40,664 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 5 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) Word has length 264 [2022-07-21 09:49:40,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:49:40,683 INFO L225 Difference]: With dead ends: 912 [2022-07-21 09:49:40,683 INFO L226 Difference]: Without dead ends: 502 [2022-07-21 09:49:40,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 257 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 09:49:40,687 INFO L413 NwaCegarLoop]: 607 mSDtfsCounter, 77 mSDsluCounter, 3457 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 4064 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-21 09:49:40,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 4064 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-21 09:49:40,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2022-07-21 09:49:40,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 502. [2022-07-21 09:49:40,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 302 states have (on average 1.2450331125827814) internal successors, (376), 306 states have internal predecessors, (376), 168 states have call successors, (168), 28 states have call predecessors, (168), 30 states have return successors, (207), 168 states have call predecessors, (207), 166 states have call successors, (207) [2022-07-21 09:49:40,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 751 transitions. [2022-07-21 09:49:40,703 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 751 transitions. Word has length 264 [2022-07-21 09:49:40,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:49:40,704 INFO L495 AbstractCegarLoop]: Abstraction has 502 states and 751 transitions. [2022-07-21 09:49:40,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 5 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2022-07-21 09:49:40,704 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 751 transitions. [2022-07-21 09:49:40,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-07-21 09:49:40,706 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:49:40,706 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 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, 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] [2022-07-21 09:49:40,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-21 09:49:40,932 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 09:49:40,933 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:49:40,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:49:40,933 INFO L85 PathProgramCache]: Analyzing trace with hash 256824554, now seen corresponding path program 3 times [2022-07-21 09:49:40,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:49:40,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977613436] [2022-07-21 09:49:40,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:49:40,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:49:41,010 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:49:41,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1391930705] [2022-07-21 09:49:41,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 09:49:41,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:49:41,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:49:41,012 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 09:49:41,013 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 09:49:42,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-21 09:49:42,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:49:42,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 2171 conjuncts, 161 conjunts are in the unsatisfiable core [2022-07-21 09:49:42,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:49:42,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:49:42,487 INFO L356 Elim1Store]: treesize reduction 64, result has 42.3 percent of original size [2022-07-21 09:49:42,487 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 59 [2022-07-21 09:50:30,661 WARN L833 $PredicateComparison]: unable to prove that (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int)) (let ((.cse2 (+ |c_aws_array_list_is_valid_#in~list.offset| 24)) (.cse0 (select |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base|))) (and (= (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| (store .cse0 0 (let ((.cse1 (select |c_old(#memory_int)| |c_aws_array_list_is_valid_#in~list.base|))) (* (select .cse1 .cse2) (select .cse1 (+ |c_aws_array_list_is_valid_#in~list.offset| 16)))))) |c_#memory_int|) (let ((.cse6 (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|))) (let ((.cse4 (= |c_aws_array_list_is_valid_#res| 0)) (.cse3 (<= (mod (select (select |c_#memory_int| |aws_array_list_is_valid_~#required_size~0.base|) 0) 18446744073709551616) (mod (select .cse6 (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616)))) (or (and (not .cse3) .cse4) (and (let ((.cse5 (= (mod (select .cse6 .cse2) 18446744073709551616) 0))) (or (and (= |c_aws_array_list_is_valid_#res| 1) (not .cse5)) (and .cse4 .cse5))) .cse3)))) (= (select .cse0 0) 0)))) is different from false [2022-07-21 09:51:33,252 WARN L233 SmtUtils]: Spent 1.04m on a formula simplification. DAG size of input: 161 DAG size of output: 128 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-07-21 09:51:33,253 INFO L356 Elim1Store]: treesize reduction 147, result has 70.2 percent of original size [2022-07-21 09:51:33,253 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 379 treesize of output 570 [2022-07-21 09:52:16,773 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 144 proven. 4 refuted. 0 times theorem prover too weak. 324 trivial. 2 not checked. [2022-07-21 09:52:16,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:52:29,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:52:29,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977613436] [2022-07-21 09:52:29,945 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:52:29,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391930705] [2022-07-21 09:52:29,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391930705] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:52:29,945 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:52:29,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2022-07-21 09:52:29,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482868696] [2022-07-21 09:52:29,945 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-21 09:52:29,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-21 09:52:29,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:52:29,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-21 09:52:29,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=729, Unknown=6, NotChecked=54, Total=870 [2022-07-21 09:52:29,946 INFO L87 Difference]: Start difference. First operand 502 states and 751 transitions. Second operand has 26 states, 22 states have (on average 4.590909090909091) internal successors, (101), 19 states have internal predecessors, (101), 7 states have call successors, (31), 4 states have call predecessors, (31), 5 states have return successors, (29), 7 states have call predecessors, (29), 6 states have call successors, (29) [2022-07-21 09:52:45,931 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-21 09:52:47,023 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 09:52:49,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:52:49,849 INFO L93 Difference]: Finished difference Result 630 states and 982 transitions. [2022-07-21 09:52:49,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 09:52:49,850 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 4.590909090909091) internal successors, (101), 19 states have internal predecessors, (101), 7 states have call successors, (31), 4 states have call predecessors, (31), 5 states have return successors, (29), 7 states have call predecessors, (29), 6 states have call successors, (29) Word has length 279 [2022-07-21 09:52:49,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:52:49,853 INFO L225 Difference]: With dead ends: 630 [2022-07-21 09:52:49,853 INFO L226 Difference]: Without dead ends: 628 [2022-07-21 09:52:49,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 256 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 35.4s TimeCoverageRelationStatistics Valid=121, Invalid=1135, Unknown=8, NotChecked=68, Total=1332 [2022-07-21 09:52:49,855 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 165 mSDsluCounter, 6552 mSDsCounter, 0 mSdLazyCounter, 3513 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 7168 SdHoareTripleChecker+Invalid, 7167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 3513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3448 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-07-21 09:52:49,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 7168 Invalid, 7167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 3513 Invalid, 0 Unknown, 3448 Unchecked, 6.3s Time] [2022-07-21 09:52:49,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-07-21 09:52:49,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 528. [2022-07-21 09:52:49,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 318 states have (on average 1.2389937106918238) internal successors, (394), 323 states have internal predecessors, (394), 174 states have call successors, (174), 30 states have call predecessors, (174), 34 states have return successors, (236), 175 states have call predecessors, (236), 172 states have call successors, (236) [2022-07-21 09:52:49,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 804 transitions. [2022-07-21 09:52:49,877 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 804 transitions. Word has length 279 [2022-07-21 09:52:49,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:52:49,877 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 804 transitions. [2022-07-21 09:52:49,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 4.590909090909091) internal successors, (101), 19 states have internal predecessors, (101), 7 states have call successors, (31), 4 states have call predecessors, (31), 5 states have return successors, (29), 7 states have call predecessors, (29), 6 states have call successors, (29) [2022-07-21 09:52:49,878 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 804 transitions. [2022-07-21 09:52:49,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2022-07-21 09:52:49,879 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:52:49,879 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2022-07-21 09:52:49,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-21 09:52:50,095 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 09:52:50,095 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:52:50,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:52:50,096 INFO L85 PathProgramCache]: Analyzing trace with hash 426866501, now seen corresponding path program 1 times [2022-07-21 09:52:50,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:52:50,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898240218] [2022-07-21 09:52:50,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:52:50,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:52:50,167 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:52:50,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [391226901] [2022-07-21 09:52:50,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:52:50,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:52:50,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:52:50,184 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 09:52:50,233 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 09:52:50,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:52:50,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 3462 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 09:52:50,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:52:51,032 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 282 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-07-21 09:52:51,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:52:51,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:52:51,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898240218] [2022-07-21 09:52:51,032 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:52:51,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391226901] [2022-07-21 09:52:51,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391226901] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:52:51,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:52:51,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:52:51,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956789860] [2022-07-21 09:52:51,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:52:51,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:52:51,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:52:51,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:52:51,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:52:51,033 INFO L87 Difference]: Start difference. First operand 528 states and 804 transitions. Second operand has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 10 states have internal predecessors, (123), 6 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (32), 5 states have call predecessors, (32), 6 states have call successors, (32) [2022-07-21 09:52:54,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:52:54,413 INFO L93 Difference]: Finished difference Result 986 states and 1523 transitions. [2022-07-21 09:52:54,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 09:52:54,414 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 10 states have internal predecessors, (123), 6 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (32), 5 states have call predecessors, (32), 6 states have call successors, (32) Word has length 297 [2022-07-21 09:52:54,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:52:54,417 INFO L225 Difference]: With dead ends: 986 [2022-07-21 09:52:54,417 INFO L226 Difference]: Without dead ends: 530 [2022-07-21 09:52:54,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 293 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 09:52:54,420 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 771 mSDsluCounter, 3648 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 4200 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-21 09:52:54,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 4200 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-21 09:52:54,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2022-07-21 09:52:54,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 512. [2022-07-21 09:52:54,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 304 states have (on average 1.2335526315789473) internal successors, (375), 309 states have internal predecessors, (375), 173 states have call successors, (173), 30 states have call predecessors, (173), 33 states have return successors, (222), 173 states have call predecessors, (222), 171 states have call successors, (222) [2022-07-21 09:52:54,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 770 transitions. [2022-07-21 09:52:54,442 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 770 transitions. Word has length 297 [2022-07-21 09:52:54,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:52:54,443 INFO L495 AbstractCegarLoop]: Abstraction has 512 states and 770 transitions. [2022-07-21 09:52:54,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 10 states have internal predecessors, (123), 6 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (32), 5 states have call predecessors, (32), 6 states have call successors, (32) [2022-07-21 09:52:54,443 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 770 transitions. [2022-07-21 09:52:54,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-07-21 09:52:54,444 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:52:54,444 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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 09:52:54,485 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 09:52:54,662 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 09:52:54,662 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:52:54,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:52:54,663 INFO L85 PathProgramCache]: Analyzing trace with hash 307241794, now seen corresponding path program 1 times [2022-07-21 09:52:54,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:52:54,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095071091] [2022-07-21 09:52:54,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:52:54,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:52:54,721 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:52:54,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [264929853] [2022-07-21 09:52:54,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:52:54,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:52:54,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:52:54,722 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 09:52:54,750 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 09:52:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:52:55,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 3607 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 09:52:55,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:52:55,533 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2022-07-21 09:52:55,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:52:55,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:52:55,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095071091] [2022-07-21 09:52:55,534 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:52:55,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264929853] [2022-07-21 09:52:55,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264929853] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:52:55,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:52:55,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 09:52:55,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229438018] [2022-07-21 09:52:55,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:52:55,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:52:55,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:52:55,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:52:55,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:52:55,536 INFO L87 Difference]: Start difference. First operand 512 states and 770 transitions. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-21 09:52:57,042 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 09:52:57,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:52:57,720 INFO L93 Difference]: Finished difference Result 1024 states and 1596 transitions. [2022-07-21 09:52:57,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:52:57,721 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 318 [2022-07-21 09:52:57,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:52:57,724 INFO L225 Difference]: With dead ends: 1024 [2022-07-21 09:52:57,724 INFO L226 Difference]: Without dead ends: 548 [2022-07-21 09:52:57,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 313 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 09:52:57,727 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 21 mSDsluCounter, 2378 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3030 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:52:57,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 3030 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-21 09:52:57,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2022-07-21 09:52:57,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 520. [2022-07-21 09:52:57,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 312 states have (on average 1.233974358974359) internal successors, (385), 317 states have internal predecessors, (385), 173 states have call successors, (173), 30 states have call predecessors, (173), 33 states have return successors, (222), 173 states have call predecessors, (222), 171 states have call successors, (222) [2022-07-21 09:52:57,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 780 transitions. [2022-07-21 09:52:57,746 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 780 transitions. Word has length 318 [2022-07-21 09:52:57,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:52:57,747 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 780 transitions. [2022-07-21 09:52:57,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-21 09:52:57,747 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 780 transitions. [2022-07-21 09:52:57,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-07-21 09:52:57,748 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:52:57,749 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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 09:52:57,788 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 09:52:57,970 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 09:52:57,971 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:52:57,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:52:57,971 INFO L85 PathProgramCache]: Analyzing trace with hash 617363270, now seen corresponding path program 1 times [2022-07-21 09:52:57,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:52:57,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542636155] [2022-07-21 09:52:57,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:52:57,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:52:58,029 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:52:58,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1041914138] [2022-07-21 09:52:58,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:52:58,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:52:58,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:52:58,043 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 09:52:58,092 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 09:52:58,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:52:58,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 3601 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 09:52:58,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:52:58,824 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 280 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-07-21 09:52:58,824 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:52:58,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:52:58,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542636155] [2022-07-21 09:52:58,825 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:52:58,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041914138] [2022-07-21 09:52:58,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041914138] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:52:58,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:52:58,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 09:52:58,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566227499] [2022-07-21 09:52:58,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:52:58,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:52:58,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:52:58,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:52:58,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:52:58,826 INFO L87 Difference]: Start difference. First operand 520 states and 780 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-21 09:52:58,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:52:58,859 INFO L93 Difference]: Finished difference Result 1012 states and 1554 transitions. [2022-07-21 09:52:58,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:52:58,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 318 [2022-07-21 09:52:58,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:52:58,863 INFO L225 Difference]: With dead ends: 1012 [2022-07-21 09:52:58,863 INFO L226 Difference]: Without dead ends: 528 [2022-07-21 09:52:58,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 315 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 09:52:58,867 INFO L413 NwaCegarLoop]: 642 mSDtfsCounter, 3 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1921 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 09:52:58,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1921 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:52:58,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-07-21 09:52:58,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 524. [2022-07-21 09:52:58,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 316 states have (on average 1.231012658227848) internal successors, (389), 321 states have internal predecessors, (389), 173 states have call successors, (173), 30 states have call predecessors, (173), 33 states have return successors, (222), 173 states have call predecessors, (222), 171 states have call successors, (222) [2022-07-21 09:52:58,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 784 transitions. [2022-07-21 09:52:58,890 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 784 transitions. Word has length 318 [2022-07-21 09:52:58,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:52:58,891 INFO L495 AbstractCegarLoop]: Abstraction has 524 states and 784 transitions. [2022-07-21 09:52:58,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-21 09:52:58,891 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 784 transitions. [2022-07-21 09:52:58,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-07-21 09:52:58,892 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:52:58,893 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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 09:52:58,918 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 09:52:59,115 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 09:52:59,116 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:52:59,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:52:59,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1082489930, now seen corresponding path program 1 times [2022-07-21 09:52:59,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:52:59,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115493080] [2022-07-21 09:52:59,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:52:59,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:52:59,170 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:52:59,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1989312307] [2022-07-21 09:52:59,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:52:59,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:52:59,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:52:59,192 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 09:52:59,227 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 09:52:59,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:52:59,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 3591 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-21 09:52:59,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:53:00,049 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-07-21 09:53:00,049 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:53:00,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:53:00,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115493080] [2022-07-21 09:53:00,049 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:53:00,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989312307] [2022-07-21 09:53:00,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989312307] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:53:00,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:53:00,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 09:53:00,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067555484] [2022-07-21 09:53:00,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:53:00,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:53:00,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:53:00,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:53:00,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:53:00,053 INFO L87 Difference]: Start difference. First operand 524 states and 784 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 4 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-07-21 09:53:00,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:53:00,289 INFO L93 Difference]: Finished difference Result 1010 states and 1524 transitions. [2022-07-21 09:53:00,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:53:00,290 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 4 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 318 [2022-07-21 09:53:00,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:53:00,293 INFO L225 Difference]: With dead ends: 1010 [2022-07-21 09:53:00,293 INFO L226 Difference]: Without dead ends: 561 [2022-07-21 09:53:00,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 313 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 09:53:00,296 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 46 mSDsluCounter, 2593 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 3262 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:53:00,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 3262 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 09:53:00,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-07-21 09:53:00,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 532. [2022-07-21 09:53:00,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 320 states have (on average 1.228125) internal successors, (393), 325 states have internal predecessors, (393), 177 states have call successors, (177), 30 states have call predecessors, (177), 33 states have return successors, (226), 177 states have call predecessors, (226), 175 states have call successors, (226) [2022-07-21 09:53:00,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 796 transitions. [2022-07-21 09:53:00,345 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 796 transitions. Word has length 318 [2022-07-21 09:53:00,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:53:00,346 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 796 transitions. [2022-07-21 09:53:00,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 4 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-07-21 09:53:00,346 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 796 transitions. [2022-07-21 09:53:00,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-07-21 09:53:00,349 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:53:00,349 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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 09:53:00,374 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 09:53:00,572 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 09:53:00,572 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:53:00,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:53:00,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1333346420, now seen corresponding path program 1 times [2022-07-21 09:53:00,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:53:00,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221211007] [2022-07-21 09:53:00,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:53:00,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:53:00,656 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:53:00,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1449523542] [2022-07-21 09:53:00,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:53:00,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:53:00,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:53:00,672 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 09:53:00,681 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 09:53:01,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:53:01,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 3594 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-21 09:53:01,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:53:01,578 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 213 proven. 1 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2022-07-21 09:53:01,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:53:02,218 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 76 proven. 13 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2022-07-21 09:53:02,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:53:02,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221211007] [2022-07-21 09:53:02,219 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:53:02,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449523542] [2022-07-21 09:53:02,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449523542] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:53:02,219 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:53:02,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 22 [2022-07-21 09:53:02,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097228319] [2022-07-21 09:53:02,220 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:53:02,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-21 09:53:02,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:53:02,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-21 09:53:02,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2022-07-21 09:53:02,221 INFO L87 Difference]: Start difference. First operand 532 states and 796 transitions. Second operand has 22 states, 18 states have (on average 7.055555555555555) internal successors, (127), 15 states have internal predecessors, (127), 6 states have call successors, (36), 3 states have call predecessors, (36), 7 states have return successors, (37), 8 states have call predecessors, (37), 5 states have call successors, (37) [2022-07-21 09:53:02,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:53:02,995 INFO L93 Difference]: Finished difference Result 981 states and 1516 transitions. [2022-07-21 09:53:02,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 09:53:02,996 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 7.055555555555555) internal successors, (127), 15 states have internal predecessors, (127), 6 states have call successors, (36), 3 states have call predecessors, (36), 7 states have return successors, (37), 8 states have call predecessors, (37), 5 states have call successors, (37) Word has length 318 [2022-07-21 09:53:02,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:53:02,999 INFO L225 Difference]: With dead ends: 981 [2022-07-21 09:53:02,999 INFO L226 Difference]: Without dead ends: 545 [2022-07-21 09:53:03,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 613 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 09:53:03,002 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 20 mSDsluCounter, 11050 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 11680 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 09:53:03,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 11680 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 09:53:03,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-07-21 09:53:03,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 539. [2022-07-21 09:53:03,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 326 states have (on average 1.2300613496932515) internal successors, (401), 332 states have internal predecessors, (401), 177 states have call successors, (177), 30 states have call predecessors, (177), 34 states have return successors, (244), 177 states have call predecessors, (244), 175 states have call successors, (244) [2022-07-21 09:53:03,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 822 transitions. [2022-07-21 09:53:03,022 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 822 transitions. Word has length 318 [2022-07-21 09:53:03,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:53:03,023 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 822 transitions. [2022-07-21 09:53:03,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 7.055555555555555) internal successors, (127), 15 states have internal predecessors, (127), 6 states have call successors, (36), 3 states have call predecessors, (36), 7 states have return successors, (37), 8 states have call predecessors, (37), 5 states have call successors, (37) [2022-07-21 09:53:03,023 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 822 transitions. [2022-07-21 09:53:03,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-07-21 09:53:03,025 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:53:03,025 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 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, 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] [2022-07-21 09:53:03,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-07-21 09:53:03,247 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 09:53:03,247 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:53:03,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:53:03,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1633147742, now seen corresponding path program 1 times [2022-07-21 09:53:03,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:53:03,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040359479] [2022-07-21 09:53:03,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:53:03,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:53:03,308 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:53:03,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [578211712] [2022-07-21 09:53:03,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:53:03,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:53:03,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:53:03,310 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 09:53:03,312 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 09:53:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:53:04,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 3573 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 09:53:04,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:53:04,084 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2022-07-21 09:53:04,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:53:04,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:53:04,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040359479] [2022-07-21 09:53:04,085 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:53:04,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578211712] [2022-07-21 09:53:04,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578211712] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:53:04,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:53:04,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 09:53:04,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746775426] [2022-07-21 09:53:04,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:53:04,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:53:04,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:53:04,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:53:04,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:53:04,088 INFO L87 Difference]: Start difference. First operand 539 states and 822 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2022-07-21 09:53:04,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:53:04,121 INFO L93 Difference]: Finished difference Result 1050 states and 1698 transitions. [2022-07-21 09:53:04,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:53:04,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) Word has length 294 [2022-07-21 09:53:04,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:53:04,125 INFO L225 Difference]: With dead ends: 1050 [2022-07-21 09:53:04,126 INFO L226 Difference]: Without dead ends: 547 [2022-07-21 09:53:04,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 292 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 09:53:04,129 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 7 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1927 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 09:53:04,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1927 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:53:04,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2022-07-21 09:53:04,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 541. [2022-07-21 09:53:04,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 328 states have (on average 1.225609756097561) internal successors, (402), 334 states have internal predecessors, (402), 177 states have call successors, (177), 30 states have call predecessors, (177), 34 states have return successors, (244), 177 states have call predecessors, (244), 175 states have call successors, (244) [2022-07-21 09:53:04,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 823 transitions. [2022-07-21 09:53:04,153 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 823 transitions. Word has length 294 [2022-07-21 09:53:04,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:53:04,153 INFO L495 AbstractCegarLoop]: Abstraction has 541 states and 823 transitions. [2022-07-21 09:53:04,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2022-07-21 09:53:04,154 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 823 transitions. [2022-07-21 09:53:04,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-07-21 09:53:04,155 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:53:04,155 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 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, 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 09:53:04,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-07-21 09:53:04,391 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 09:53:04,391 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:53:04,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:53:04,392 INFO L85 PathProgramCache]: Analyzing trace with hash 2015243163, now seen corresponding path program 2 times [2022-07-21 09:53:04,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:53:04,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689954790] [2022-07-21 09:53:04,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:53:04,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:53:04,454 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:53:04,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [467101773] [2022-07-21 09:53:04,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:53:04,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:53:04,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:53:04,456 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 09:53:04,482 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 09:53:05,213 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:53:05,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:53:05,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 3582 conjuncts, 52 conjunts are in the unsatisfiable core [2022-07-21 09:53:05,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:53:05,329 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 251 proven. 1 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-07-21 09:53:05,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:53:05,766 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 51 proven. 6 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2022-07-21 09:53:05,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:53:05,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689954790] [2022-07-21 09:53:05,767 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:53:05,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467101773] [2022-07-21 09:53:05,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467101773] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:53:05,767 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:53:05,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 16 [2022-07-21 09:53:05,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780777816] [2022-07-21 09:53:05,767 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:53:05,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-21 09:53:05,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:53:05,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-21 09:53:05,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-07-21 09:53:05,768 INFO L87 Difference]: Start difference. First operand 541 states and 823 transitions. Second operand has 16 states, 14 states have (on average 8.428571428571429) internal successors, (118), 13 states have internal predecessors, (118), 6 states have call successors, (37), 3 states have call predecessors, (37), 5 states have return successors, (35), 6 states have call predecessors, (35), 5 states have call successors, (35) [2022-07-21 09:53:06,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:53:06,316 INFO L93 Difference]: Finished difference Result 1054 states and 1612 transitions. [2022-07-21 09:53:06,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 09:53:06,317 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 8.428571428571429) internal successors, (118), 13 states have internal predecessors, (118), 6 states have call successors, (37), 3 states have call predecessors, (37), 5 states have return successors, (35), 6 states have call predecessors, (35), 5 states have call successors, (35) Word has length 300 [2022-07-21 09:53:06,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:53:06,320 INFO L225 Difference]: With dead ends: 1054 [2022-07-21 09:53:06,320 INFO L226 Difference]: Without dead ends: 546 [2022-07-21 09:53:06,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 584 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-07-21 09:53:06,324 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 6 mSDsluCounter, 7174 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 7785 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 09:53:06,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 7785 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 09:53:06,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-07-21 09:53:06,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 544. [2022-07-21 09:53:06,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 330 states have (on average 1.2242424242424241) internal successors, (404), 337 states have internal predecessors, (404), 177 states have call successors, (177), 30 states have call predecessors, (177), 35 states have return successors, (247), 177 states have call predecessors, (247), 175 states have call successors, (247) [2022-07-21 09:53:06,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 828 transitions. [2022-07-21 09:53:06,346 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 828 transitions. Word has length 300 [2022-07-21 09:53:06,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:53:06,347 INFO L495 AbstractCegarLoop]: Abstraction has 544 states and 828 transitions. [2022-07-21 09:53:06,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 8.428571428571429) internal successors, (118), 13 states have internal predecessors, (118), 6 states have call successors, (37), 3 states have call predecessors, (37), 5 states have return successors, (35), 6 states have call predecessors, (35), 5 states have call successors, (35) [2022-07-21 09:53:06,347 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 828 transitions. [2022-07-21 09:53:06,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2022-07-21 09:53:06,349 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:53:06,349 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:53:06,374 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 09:53:06,571 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 09:53:06,572 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:53:06,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:53:06,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1728958353, now seen corresponding path program 1 times [2022-07-21 09:53:06,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:53:06,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532023390] [2022-07-21 09:53:06,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:53:06,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:53:06,628 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:53:06,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1709600165] [2022-07-21 09:53:06,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:53:06,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:53:06,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:53:06,629 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 09:53:06,643 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 09:53:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:53:07,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 3617 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-21 09:53:07,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:53:07,544 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 280 proven. 3 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2022-07-21 09:53:07,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:53:07,729 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-07-21 09:53:07,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:53:07,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532023390] [2022-07-21 09:53:07,729 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:53:07,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709600165] [2022-07-21 09:53:07,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709600165] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:53:07,729 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:53:07,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2022-07-21 09:53:07,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224328038] [2022-07-21 09:53:07,730 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:53:07,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:53:07,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:53:07,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:53:07,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:53:07,731 INFO L87 Difference]: Start difference. First operand 544 states and 828 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 4 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (38), 5 states have call predecessors, (38), 4 states have call successors, (38) [2022-07-21 09:53:10,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:53:10,698 INFO L93 Difference]: Finished difference Result 1061 states and 1631 transitions. [2022-07-21 09:53:10,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:53:10,699 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 4 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (38), 5 states have call predecessors, (38), 4 states have call successors, (38) Word has length 311 [2022-07-21 09:53:10,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:53:10,702 INFO L225 Difference]: With dead ends: 1061 [2022-07-21 09:53:10,702 INFO L226 Difference]: Without dead ends: 595 [2022-07-21 09:53:10,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 614 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 09:53:10,705 INFO L413 NwaCegarLoop]: 660 mSDtfsCounter, 56 mSDsluCounter, 3902 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 4562 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-21 09:53:10,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 4562 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-21 09:53:10,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-07-21 09:53:10,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 564. [2022-07-21 09:53:10,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 343 states have (on average 1.2244897959183674) internal successors, (420), 349 states have internal predecessors, (420), 184 states have call successors, (184), 30 states have call predecessors, (184), 35 states have return successors, (256), 185 states have call predecessors, (256), 182 states have call successors, (256) [2022-07-21 09:53:10,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 860 transitions. [2022-07-21 09:53:10,732 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 860 transitions. Word has length 311 [2022-07-21 09:53:10,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:53:10,733 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 860 transitions. [2022-07-21 09:53:10,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 4 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (38), 5 states have call predecessors, (38), 4 states have call successors, (38) [2022-07-21 09:53:10,733 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 860 transitions. [2022-07-21 09:53:10,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2022-07-21 09:53:10,735 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:53:10,735 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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 09:53:10,759 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 09:53:10,950 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 09:53:10,950 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:53:10,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:53:10,950 INFO L85 PathProgramCache]: Analyzing trace with hash 251242251, now seen corresponding path program 1 times [2022-07-21 09:53:10,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:53:10,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352765425] [2022-07-21 09:53:10,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:53:10,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:53:11,008 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:53:11,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1735141497] [2022-07-21 09:53:11,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:53:11,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:53:11,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:53:11,009 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 09:53:11,010 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 09:53:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:53:11,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 3619 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-21 09:53:11,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:53:11,872 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 343 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-07-21 09:53:11,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:53:11,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:53:11,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352765425] [2022-07-21 09:53:11,872 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:53:11,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735141497] [2022-07-21 09:53:11,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735141497] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:53:11,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:53:11,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:53:11,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957774781] [2022-07-21 09:53:11,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:53:11,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:53:11,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:53:11,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:53:11,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:53:11,875 INFO L87 Difference]: Start difference. First operand 564 states and 860 transitions. Second operand has 5 states, 4 states have (on average 32.25) internal successors, (129), 5 states have internal predecessors, (129), 3 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (34), 2 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-21 09:53:12,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:53:12,660 INFO L93 Difference]: Finished difference Result 1022 states and 1570 transitions. [2022-07-21 09:53:12,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:53:12,661 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 32.25) internal successors, (129), 5 states have internal predecessors, (129), 3 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (34), 2 states have call predecessors, (34), 3 states have call successors, (34) Word has length 323 [2022-07-21 09:53:12,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:53:12,664 INFO L225 Difference]: With dead ends: 1022 [2022-07-21 09:53:12,664 INFO L226 Difference]: Without dead ends: 536 [2022-07-21 09:53:12,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 319 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 09:53:12,667 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 2 mSDsluCounter, 1729 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2334 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 09:53:12,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2334 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 09:53:12,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-07-21 09:53:12,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 536. [2022-07-21 09:53:12,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 326 states have (on average 1.2208588957055215) internal successors, (398), 333 states have internal predecessors, (398), 173 states have call successors, (173), 30 states have call predecessors, (173), 35 states have return successors, (242), 173 states have call predecessors, (242), 171 states have call successors, (242) [2022-07-21 09:53:12,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 813 transitions. [2022-07-21 09:53:12,689 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 813 transitions. Word has length 323 [2022-07-21 09:53:12,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:53:12,689 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 813 transitions. [2022-07-21 09:53:12,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 32.25) internal successors, (129), 5 states have internal predecessors, (129), 3 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (34), 2 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-21 09:53:12,689 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 813 transitions. [2022-07-21 09:53:12,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2022-07-21 09:53:12,691 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:53:12,691 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 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, 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 09:53:12,729 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 09:53:12,909 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 09:53:12,910 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:53:12,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:53:12,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1775783505, now seen corresponding path program 1 times [2022-07-21 09:53:12,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:53:12,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448980300] [2022-07-21 09:53:12,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:53:12,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:53:12,967 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:53:12,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1110523213] [2022-07-21 09:53:12,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:53:12,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:53:12,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:53:12,968 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 09:53:13,006 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 09:53:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:53:13,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 3652 conjuncts, 38 conjunts are in the unsatisfiable core [2022-07-21 09:53:13,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:53:14,073 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 09:53:14,085 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2022-07-21 09:53:14,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:53:14,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:53:14,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448980300] [2022-07-21 09:53:14,086 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:53:14,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110523213] [2022-07-21 09:53:14,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110523213] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:53:14,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:53:14,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:53:14,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767422507] [2022-07-21 09:53:14,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:53:14,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:53:14,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:53:14,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:53:14,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:53:14,089 INFO L87 Difference]: Start difference. First operand 536 states and 813 transitions. Second operand has 10 states, 10 states have (on average 12.1) internal successors, (121), 10 states have internal predecessors, (121), 6 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2022-07-21 09:53:16,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:53:16,776 INFO L93 Difference]: Finished difference Result 1088 states and 1750 transitions. [2022-07-21 09:53:16,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 09:53:16,777 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 10 states have internal predecessors, (121), 6 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 322 [2022-07-21 09:53:16,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:53:16,781 INFO L225 Difference]: With dead ends: 1088 [2022-07-21 09:53:16,781 INFO L226 Difference]: Without dead ends: 584 [2022-07-21 09:53:16,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-07-21 09:53:16,784 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 120 mSDsluCounter, 3880 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 4481 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:53:16,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 4481 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-21 09:53:16,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2022-07-21 09:53:16,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 562. [2022-07-21 09:53:16,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 350 states have (on average 1.2228571428571429) internal successors, (428), 357 states have internal predecessors, (428), 173 states have call successors, (173), 30 states have call predecessors, (173), 37 states have return successors, (282), 175 states have call predecessors, (282), 171 states have call successors, (282) [2022-07-21 09:53:16,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 883 transitions. [2022-07-21 09:53:16,807 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 883 transitions. Word has length 322 [2022-07-21 09:53:16,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:53:16,827 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 883 transitions. [2022-07-21 09:53:16,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 10 states have internal predecessors, (121), 6 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2022-07-21 09:53:16,828 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 883 transitions. [2022-07-21 09:53:16,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2022-07-21 09:53:16,829 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:53:16,829 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 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, 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 09:53:16,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-21 09:53:17,051 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 09:53:17,052 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:53:17,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:53:17,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1989022549, now seen corresponding path program 1 times [2022-07-21 09:53:17,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:53:17,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123691597] [2022-07-21 09:53:17,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:53:17,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:53:17,107 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:53:17,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [970634] [2022-07-21 09:53:17,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:53:17,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:53:17,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:53:17,109 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 09:53:17,113 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 09:53:17,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:53:17,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 3658 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-21 09:53:17,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:53:17,991 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2022-07-21 09:53:17,991 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:53:17,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:53:17,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123691597] [2022-07-21 09:53:17,991 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:53:17,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970634] [2022-07-21 09:53:17,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970634] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:53:17,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:53:17,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:53:17,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237920494] [2022-07-21 09:53:17,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:53:17,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:53:17,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:53:17,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:53:17,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:53:17,992 INFO L87 Difference]: Start difference. First operand 562 states and 883 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-21 09:53:18,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:53:18,033 INFO L93 Difference]: Finished difference Result 1120 states and 1814 transitions. [2022-07-21 09:53:18,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:53:18,034 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 322 [2022-07-21 09:53:18,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:53:18,037 INFO L225 Difference]: With dead ends: 1120 [2022-07-21 09:53:18,037 INFO L226 Difference]: Without dead ends: 594 [2022-07-21 09:53:18,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 318 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 09:53:18,041 INFO L413 NwaCegarLoop]: 666 mSDtfsCounter, 8 mSDsluCounter, 1974 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2640 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 09:53:18,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2640 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:53:18,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2022-07-21 09:53:18,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 582. [2022-07-21 09:53:18,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 370 states have (on average 1.2216216216216216) internal successors, (452), 377 states have internal predecessors, (452), 173 states have call successors, (173), 30 states have call predecessors, (173), 37 states have return successors, (282), 175 states have call predecessors, (282), 171 states have call successors, (282) [2022-07-21 09:53:18,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 907 transitions. [2022-07-21 09:53:18,063 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 907 transitions. Word has length 322 [2022-07-21 09:53:18,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:53:18,063 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 907 transitions. [2022-07-21 09:53:18,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-21 09:53:18,063 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 907 transitions. [2022-07-21 09:53:18,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-07-21 09:53:18,065 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:53:18,065 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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 09:53:18,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-21 09:53:18,287 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 09:53:18,287 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:53:18,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:53:18,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1269040927, now seen corresponding path program 1 times [2022-07-21 09:53:18,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:53:18,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133852839] [2022-07-21 09:53:18,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:53:18,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:53:18,344 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:53:18,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1122522910] [2022-07-21 09:53:18,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:53:18,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:53:18,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:53:18,346 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 09:53:18,347 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 09:53:19,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:53:19,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 3670 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 09:53:19,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:53:19,235 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2022-07-21 09:53:19,235 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:53:19,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:53:19,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133852839] [2022-07-21 09:53:19,235 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:53:19,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122522910] [2022-07-21 09:53:19,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122522910] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:53:19,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:53:19,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 09:53:19,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354681770] [2022-07-21 09:53:19,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:53:19,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:53:19,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:53:19,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:53:19,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:53:19,237 INFO L87 Difference]: Start difference. First operand 582 states and 907 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-07-21 09:53:19,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:53:19,270 INFO L93 Difference]: Finished difference Result 1120 states and 1786 transitions. [2022-07-21 09:53:19,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:53:19,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 334 [2022-07-21 09:53:19,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:53:19,275 INFO L225 Difference]: With dead ends: 1120 [2022-07-21 09:53:19,275 INFO L226 Difference]: Without dead ends: 574 [2022-07-21 09:53:19,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 331 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 09:53:19,279 INFO L413 NwaCegarLoop]: 643 mSDtfsCounter, 2 mSDsluCounter, 1275 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1918 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 09:53:19,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1918 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:53:19,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2022-07-21 09:53:19,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 566. [2022-07-21 09:53:19,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 354 states have (on average 1.2090395480225988) internal successors, (428), 361 states have internal predecessors, (428), 173 states have call successors, (173), 30 states have call predecessors, (173), 37 states have return successors, (282), 175 states have call predecessors, (282), 171 states have call successors, (282) [2022-07-21 09:53:19,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 883 transitions. [2022-07-21 09:53:19,316 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 883 transitions. Word has length 334 [2022-07-21 09:53:19,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:53:19,316 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 883 transitions. [2022-07-21 09:53:19,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-07-21 09:53:19,317 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 883 transitions. [2022-07-21 09:53:19,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-07-21 09:53:19,318 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:53:19,318 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 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 09:53:19,354 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 09:53:19,554 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 09:53:19,554 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:53:19,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:53:19,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1097626653, now seen corresponding path program 1 times [2022-07-21 09:53:19,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:53:19,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004526668] [2022-07-21 09:53:19,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:53:19,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:53:19,610 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:53:19,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1028735351] [2022-07-21 09:53:19,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:53:19,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:53:19,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:53:19,612 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 09:53:19,616 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 09:53:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:53:20,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 3662 conjuncts, 87 conjunts are in the unsatisfiable core [2022-07-21 09:53:20,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:53:21,406 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 09:53:21,408 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 09:53:21,432 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 393 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2022-07-21 09:53:21,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:53:21,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:53:21,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004526668] [2022-07-21 09:53:21,432 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:53:21,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028735351] [2022-07-21 09:53:21,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028735351] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:53:21,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:53:21,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-21 09:53:21,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025718629] [2022-07-21 09:53:21,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:53:21,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-21 09:53:21,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:53:21,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-21 09:53:21,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2022-07-21 09:53:21,434 INFO L87 Difference]: Start difference. First operand 566 states and 883 transitions. Second operand has 21 states, 21 states have (on average 6.761904761904762) internal successors, (142), 18 states have internal predecessors, (142), 8 states have call successors, (36), 3 states have call predecessors, (36), 7 states have return successors, (35), 10 states have call predecessors, (35), 8 states have call successors, (35) [2022-07-21 09:53:28,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:53:28,382 INFO L93 Difference]: Finished difference Result 1236 states and 2005 transitions. [2022-07-21 09:53:28,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-21 09:53:28,383 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.761904761904762) internal successors, (142), 18 states have internal predecessors, (142), 8 states have call successors, (36), 3 states have call predecessors, (36), 7 states have return successors, (35), 10 states have call predecessors, (35), 8 states have call successors, (35) Word has length 326 [2022-07-21 09:53:28,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:53:28,387 INFO L225 Difference]: With dead ends: 1236 [2022-07-21 09:53:28,387 INFO L226 Difference]: Without dead ends: 738 [2022-07-21 09:53:28,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 303 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=126, Invalid=866, Unknown=0, NotChecked=0, Total=992 [2022-07-21 09:53:28,390 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 151 mSDsluCounter, 10144 mSDsCounter, 0 mSdLazyCounter, 1845 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 10758 SdHoareTripleChecker+Invalid, 2623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 748 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:53:28,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 10758 Invalid, 2623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1845 Invalid, 0 Unknown, 748 Unchecked, 6.6s Time] [2022-07-21 09:53:28,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2022-07-21 09:53:28,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 639. [2022-07-21 09:53:28,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 411 states have (on average 1.197080291970803) internal successors, (492), 420 states have internal predecessors, (492), 180 states have call successors, (180), 34 states have call predecessors, (180), 46 states have return successors, (384), 185 states have call predecessors, (384), 178 states have call successors, (384) [2022-07-21 09:53:28,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1056 transitions. [2022-07-21 09:53:28,424 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1056 transitions. Word has length 326 [2022-07-21 09:53:28,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:53:28,424 INFO L495 AbstractCegarLoop]: Abstraction has 639 states and 1056 transitions. [2022-07-21 09:53:28,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.761904761904762) internal successors, (142), 18 states have internal predecessors, (142), 8 states have call successors, (36), 3 states have call predecessors, (36), 7 states have return successors, (35), 10 states have call predecessors, (35), 8 states have call successors, (35) [2022-07-21 09:53:28,425 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1056 transitions. [2022-07-21 09:53:28,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-07-21 09:53:28,428 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:53:28,428 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 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 09:53:28,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-21 09:53:28,646 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 09:53:28,646 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:53:28,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:53:28,647 INFO L85 PathProgramCache]: Analyzing trace with hash 91165921, now seen corresponding path program 1 times [2022-07-21 09:53:28,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:53:28,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730186544] [2022-07-21 09:53:28,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:53:28,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:53:28,700 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:53:28,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [388528488] [2022-07-21 09:53:28,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:53:28,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:53:28,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:53:28,702 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 09:53:28,718 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 09:53:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:53:29,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 3657 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 09:53:29,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:53:29,716 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 273 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-07-21 09:53:29,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:53:29,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:53:29,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730186544] [2022-07-21 09:53:29,717 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:53:29,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388528488] [2022-07-21 09:53:29,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388528488] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:53:29,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:53:29,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:53:29,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902959444] [2022-07-21 09:53:29,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:53:29,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:53:29,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:53:29,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:53:29,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:53:29,718 INFO L87 Difference]: Start difference. First operand 639 states and 1056 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-21 09:53:31,200 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 09:53:31,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:53:31,986 INFO L93 Difference]: Finished difference Result 1224 states and 2109 transitions. [2022-07-21 09:53:31,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:53:31,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 326 [2022-07-21 09:53:31,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:53:31,991 INFO L225 Difference]: With dead ends: 1224 [2022-07-21 09:53:31,991 INFO L226 Difference]: Without dead ends: 621 [2022-07-21 09:53:31,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:53:31,994 INFO L413 NwaCegarLoop]: 659 mSDtfsCounter, 7 mSDsluCounter, 1817 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2476 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:53:31,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2476 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-21 09:53:31,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2022-07-21 09:53:32,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 621. [2022-07-21 09:53:32,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 395 states have (on average 1.1924050632911392) internal successors, (471), 403 states have internal predecessors, (471), 180 states have call successors, (180), 34 states have call predecessors, (180), 44 states have return successors, (344), 184 states have call predecessors, (344), 178 states have call successors, (344) [2022-07-21 09:53:32,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 995 transitions. [2022-07-21 09:53:32,024 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 995 transitions. Word has length 326 [2022-07-21 09:53:32,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:53:32,024 INFO L495 AbstractCegarLoop]: Abstraction has 621 states and 995 transitions. [2022-07-21 09:53:32,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-21 09:53:32,024 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 995 transitions. [2022-07-21 09:53:32,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2022-07-21 09:53:32,030 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:53:32,030 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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] [2022-07-21 09:53:32,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-07-21 09:53:32,249 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 09:53:32,250 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:53:32,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:53:32,250 INFO L85 PathProgramCache]: Analyzing trace with hash 326648205, now seen corresponding path program 1 times [2022-07-21 09:53:32,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:53:32,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128960891] [2022-07-21 09:53:32,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:53:32,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:53:32,305 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:53:32,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2047846409] [2022-07-21 09:53:32,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:53:32,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:53:32,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:53:32,307 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 09:53:32,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process