./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 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_s_sift_either_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 355537246d5dfb9690a92cc5d0cbf014736bcc62122f38f5559ea0fbf5331d1c --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 14:01:15,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 14:01:15,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 14:01:15,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 14:01:15,407 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 14:01:15,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 14:01:15,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 14:01:15,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 14:01:15,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 14:01:15,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 14:01:15,424 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 14:01:15,425 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 14:01:15,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 14:01:15,427 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 14:01:15,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 14:01:15,432 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 14:01:15,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 14:01:15,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 14:01:15,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 14:01:15,443 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 14:01:15,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 14:01:15,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 14:01:15,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 14:01:15,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 14:01:15,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 14:01:15,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 14:01:15,451 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 14:01:15,452 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 14:01:15,452 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 14:01:15,453 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 14:01:15,454 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 14:01:15,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 14:01:15,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 14:01:15,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 14:01:15,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 14:01:15,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 14:01:15,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 14:01:15,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 14:01:15,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 14:01:15,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 14:01:15,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 14:01:15,460 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 14:01:15,486 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 14:01:15,488 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 14:01:15,489 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 14:01:15,489 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 14:01:15,490 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 14:01:15,490 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 14:01:15,490 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 14:01:15,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 14:01:15,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 14:01:15,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 14:01:15,491 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 14:01:15,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 14:01:15,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 14:01:15,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 14:01:15,492 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 14:01:15,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 14:01:15,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 14:01:15,492 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 14:01:15,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 14:01:15,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 14:01:15,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 14:01:15,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 14:01:15,493 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 14:01:15,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 14:01:15,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 14:01:15,494 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 14:01:15,494 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 14:01:15,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 14:01:15,494 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 14:01:15,494 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 355537246d5dfb9690a92cc5d0cbf014736bcc62122f38f5559ea0fbf5331d1c [2021-11-02 14:01:15,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 14:01:15,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 14:01:15,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 14:01:15,716 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 14:01:15,717 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 14:01:15,718 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i [2021-11-02 14:01:15,780 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/739d1ff71/0156fc5ec22b4705aa5c861db23825ca/FLAG650548ba7 [2021-11-02 14:01:16,365 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 14:01:16,366 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i [2021-11-02 14:01:16,394 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/739d1ff71/0156fc5ec22b4705aa5c861db23825ca/FLAG650548ba7 [2021-11-02 14:01:16,795 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/739d1ff71/0156fc5ec22b4705aa5c861db23825ca [2021-11-02 14:01:16,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 14:01:16,798 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 14:01:16,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 14:01:16,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 14:01:16,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 14:01:16,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 02:01:16" (1/1) ... [2021-11-02 14:01:16,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@419f34c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:01:16, skipping insertion in model container [2021-11-02 14:01:16,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 02:01:16" (1/1) ... [2021-11-02 14:01:16,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 14:01:16,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 14:01:17,103 WARN L228 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_s_sift_either_harness.i[4506,4519] [2021-11-02 14:01:17,110 WARN L228 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_s_sift_either_harness.i[4566,4579] [2021-11-02 14:01:17,135 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 14:01:17,143 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 14:01:17,711 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:17,712 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:17,712 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:17,712 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:17,713 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:17,720 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:17,721 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:17,722 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:17,722 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:17,723 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:17,724 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:17,725 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:17,725 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:17,919 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 14:01:17,920 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 14:01:17,921 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 14:01:17,922 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 14:01:17,923 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 14:01:17,923 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 14:01:17,924 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 14:01:17,924 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 14:01:17,925 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 14:01:17,925 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 14:01:18,025 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 14:01:18,038 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,039 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,094 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,098 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,150 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,151 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,151 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,152 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,153 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,153 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,154 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,155 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,156 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,157 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,157 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,157 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,157 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,160 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,161 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,161 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,161 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,165 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,166 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,174 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,175 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,175 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 14:01:18,225 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 14:01:18,245 WARN L228 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_s_sift_either_harness.i[4506,4519] [2021-11-02 14:01:18,245 WARN L228 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_s_sift_either_harness.i[4566,4579] [2021-11-02 14:01:18,248 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 14:01:18,251 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 14:01:18,285 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,285 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,286 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,286 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,286 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,292 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,293 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,293 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,294 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,295 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,295 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,296 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,296 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,327 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 14:01:18,328 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 14:01:18,329 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 14:01:18,329 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 14:01:18,330 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 14:01:18,330 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 14:01:18,330 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 14:01:18,331 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 14:01:18,331 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 14:01:18,331 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 14:01:18,348 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 14:01:18,363 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,363 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,364 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,367 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,385 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,389 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,389 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,390 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,390 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,390 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,391 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,391 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,392 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,392 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,392 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,393 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,393 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,394 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,394 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,394 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,395 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,396 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,396 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,400 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,401 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,401 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:18,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 14:01:18,560 INFO L208 MainTranslator]: Completed translation [2021-11-02 14:01:18,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:01:18 WrapperNode [2021-11-02 14:01:18,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 14:01:18,562 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 14:01:18,562 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 14:01:18,562 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 14:01:18,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:01:18" (1/1) ... [2021-11-02 14:01:18,642 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:01:18" (1/1) ... [2021-11-02 14:01:18,846 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 14:01:18,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 14:01:18,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 14:01:18,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 14:01:18,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:01:18" (1/1) ... [2021-11-02 14:01:18,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:01:18" (1/1) ... [2021-11-02 14:01:18,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:01:18" (1/1) ... [2021-11-02 14:01:18,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:01:18" (1/1) ... [2021-11-02 14:01:19,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:01:18" (1/1) ... [2021-11-02 14:01:19,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:01:18" (1/1) ... [2021-11-02 14:01:19,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:01:18" (1/1) ... [2021-11-02 14:01:19,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 14:01:19,143 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 14:01:19,143 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 14:01:19,143 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 14:01:19,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:01:18" (1/1) ... [2021-11-02 14:01:19,149 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 14:01:19,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:01:19,180 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) [2021-11-02 14:01:19,186 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 [2021-11-02 14:01:19,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 14:01:19,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 14:01:19,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 14:01:19,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 14:01:19,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 14:01:19,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 14:01:19,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 14:01:19,213 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-02 14:01:19,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 14:01:19,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 14:01:19,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 14:01:19,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 14:01:24,050 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 14:01:24,050 INFO L299 CfgBuilder]: Removed 1637 assume(true) statements. [2021-11-02 14:01:24,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 02:01:24 BoogieIcfgContainer [2021-11-02 14:01:24,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 14:01:24,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 14:01:24,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 14:01:24,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 14:01:24,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 02:01:16" (1/3) ... [2021-11-02 14:01:24,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff9779e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 02:01:24, skipping insertion in model container [2021-11-02 14:01:24,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:01:18" (2/3) ... [2021-11-02 14:01:24,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff9779e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 02:01:24, skipping insertion in model container [2021-11-02 14:01:24,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 02:01:24" (3/3) ... [2021-11-02 14:01:24,059 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_either_harness.i [2021-11-02 14:01:24,062 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 14:01:24,063 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2021-11-02 14:01:24,099 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 14:01:24,104 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 14:01:24,104 INFO L340 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2021-11-02 14:01:24,140 INFO L276 IsEmpty]: Start isEmpty. Operand has 2061 states, 2006 states have (on average 1.4272183449651046) internal successors, (2863), 2060 states have internal predecessors, (2863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:01:24,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-02 14:01:24,150 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:01:24,151 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:01:24,151 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-02 14:01:24,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:01:24,155 INFO L85 PathProgramCache]: Analyzing trace with hash -771143003, now seen corresponding path program 1 times [2021-11-02 14:01:24,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:01:24,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480958142] [2021-11-02 14:01:24,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:01:24,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:01:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:01:24,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:01:24,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:01:24,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480958142] [2021-11-02 14:01:24,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480958142] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:01:24,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:01:24,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 14:01:24,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492483909] [2021-11-02 14:01:24,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 14:01:24,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:01:24,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 14:01:24,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 14:01:24,668 INFO L87 Difference]: Start difference. First operand has 2061 states, 2006 states have (on average 1.4272183449651046) internal successors, (2863), 2060 states have internal predecessors, (2863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:01:26,738 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:01:35,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:01:35,481 INFO L93 Difference]: Finished difference Result 4116 states and 5719 transitions. [2021-11-02 14:01:35,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 14:01:35,483 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-02 14:01:35,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:01:35,508 INFO L225 Difference]: With dead ends: 4116 [2021-11-02 14:01:35,508 INFO L226 Difference]: Without dead ends: 2056 [2021-11-02 14:01:35,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 14:01:35,523 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2659 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9625.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.22ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2659 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10511.59ms IncrementalHoareTripleChecker+Time [2021-11-02 14:01:35,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 2660 Unknown, 0 Unchecked, 19.22ms Time], IncrementalHoareTripleChecker [0 Valid, 2659 Invalid, 1 Unknown, 0 Unchecked, 10511.59ms Time] [2021-11-02 14:01:35,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2056 states. [2021-11-02 14:01:35,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2056 to 2056. [2021-11-02 14:01:35,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2056 states, 2002 states have (on average 1.326173826173826) internal successors, (2655), 2055 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:01:35,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2056 states to 2056 states and 2655 transitions. [2021-11-02 14:01:35,616 INFO L78 Accepts]: Start accepts. Automaton has 2056 states and 2655 transitions. Word has length 41 [2021-11-02 14:01:35,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:01:35,616 INFO L470 AbstractCegarLoop]: Abstraction has 2056 states and 2655 transitions. [2021-11-02 14:01:35,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:01:35,616 INFO L276 IsEmpty]: Start isEmpty. Operand 2056 states and 2655 transitions. [2021-11-02 14:01:35,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-02 14:01:35,621 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:01:35,621 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:01:35,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 14:01:35,622 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-02 14:01:35,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:01:35,624 INFO L85 PathProgramCache]: Analyzing trace with hash 890029669, now seen corresponding path program 1 times [2021-11-02 14:01:35,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:01:35,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343215809] [2021-11-02 14:01:35,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:01:35,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:01:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:01:35,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:01:35,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:01:35,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343215809] [2021-11-02 14:01:35,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343215809] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:01:35,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:01:35,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 14:01:35,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137185662] [2021-11-02 14:01:35,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 14:01:35,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:01:35,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 14:01:35,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 14:01:35,935 INFO L87 Difference]: Start difference. First operand 2056 states and 2655 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:01:37,982 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:01:52,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:01:52,816 INFO L93 Difference]: Finished difference Result 4034 states and 5208 transitions. [2021-11-02 14:01:52,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 14:01:52,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-02 14:01:52,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:01:52,829 INFO L225 Difference]: With dead ends: 4034 [2021-11-02 14:01:52,829 INFO L226 Difference]: Without dead ends: 2058 [2021-11-02 14:01:52,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 85.50ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:01:52,837 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2882 mSDsluCounter, 2365 mSDsCounter, 0 mSdLazyCounter, 5053 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15260.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2882 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 51.70ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 5053 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16504.01ms IncrementalHoareTripleChecker+Time [2021-11-02 14:01:52,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2882 Valid, 0 Invalid, 5059 Unknown, 0 Unchecked, 51.70ms Time], IncrementalHoareTripleChecker [5 Valid, 5053 Invalid, 1 Unknown, 0 Unchecked, 16504.01ms Time] [2021-11-02 14:01:52,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2058 states. [2021-11-02 14:01:52,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2058 to 2056. [2021-11-02 14:01:52,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2056 states, 2002 states have (on average 1.3246753246753247) internal successors, (2652), 2055 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:01:52,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2056 states to 2056 states and 2652 transitions. [2021-11-02 14:01:52,875 INFO L78 Accepts]: Start accepts. Automaton has 2056 states and 2652 transitions. Word has length 41 [2021-11-02 14:01:52,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:01:52,876 INFO L470 AbstractCegarLoop]: Abstraction has 2056 states and 2652 transitions. [2021-11-02 14:01:52,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:01:52,876 INFO L276 IsEmpty]: Start isEmpty. Operand 2056 states and 2652 transitions. [2021-11-02 14:01:52,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-02 14:01:52,879 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:01:52,879 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:01:52,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 14:01:52,880 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-02 14:01:52,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:01:52,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1055647481, now seen corresponding path program 1 times [2021-11-02 14:01:52,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:01:52,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149079185] [2021-11-02 14:01:52,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:01:52,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:01:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:01:53,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:01:53,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:01:53,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149079185] [2021-11-02 14:01:53,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149079185] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:01:53,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:01:53,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 14:01:53,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738010916] [2021-11-02 14:01:53,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 14:01:53,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:01:53,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 14:01:53,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:01:53,146 INFO L87 Difference]: Start difference. First operand 2056 states and 2652 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:01:55,186 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:02:14,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:02:14,881 INFO L93 Difference]: Finished difference Result 4157 states and 5359 transitions. [2021-11-02 14:02:14,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 14:02:14,882 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-02 14:02:14,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:02:14,888 INFO L225 Difference]: With dead ends: 4157 [2021-11-02 14:02:14,888 INFO L226 Difference]: Without dead ends: 2149 [2021-11-02 14:02:14,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 126.19ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 14:02:14,892 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3201 mSDsluCounter, 4352 mSDsCounter, 0 mSdLazyCounter, 7638 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19916.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3201 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.74ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 7638 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21355.74ms IncrementalHoareTripleChecker+Time [2021-11-02 14:02:14,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3201 Valid, 0 Invalid, 7656 Unknown, 0 Unchecked, 42.74ms Time], IncrementalHoareTripleChecker [17 Valid, 7638 Invalid, 1 Unknown, 0 Unchecked, 21355.74ms Time] [2021-11-02 14:02:14,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2149 states. [2021-11-02 14:02:14,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2149 to 2056. [2021-11-02 14:02:14,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2056 states, 2002 states have (on average 1.3231768231768233) internal successors, (2649), 2055 states have internal predecessors, (2649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:02:14,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2056 states to 2056 states and 2649 transitions. [2021-11-02 14:02:14,928 INFO L78 Accepts]: Start accepts. Automaton has 2056 states and 2649 transitions. Word has length 49 [2021-11-02 14:02:14,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:02:14,929 INFO L470 AbstractCegarLoop]: Abstraction has 2056 states and 2649 transitions. [2021-11-02 14:02:14,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:02:14,929 INFO L276 IsEmpty]: Start isEmpty. Operand 2056 states and 2649 transitions. [2021-11-02 14:02:14,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-02 14:02:14,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:02:14,930 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:02:14,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 14:02:14,930 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-02 14:02:14,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:02:14,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1757033039, now seen corresponding path program 1 times [2021-11-02 14:02:14,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:02:14,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104019770] [2021-11-02 14:02:14,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:02:14,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:02:15,001 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:02:15,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [859287513] [2021-11-02 14:02:15,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:02:15,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:02:15,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:02:15,004 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) [2021-11-02 14:02:15,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 14:02:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:02:15,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 2598 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 14:02:15,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:02:15,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:02:15,824 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:02:15,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:02:15,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104019770] [2021-11-02 14:02:15,824 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:02:15,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859287513] [2021-11-02 14:02:15,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859287513] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:02:15,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:02:15,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 14:02:15,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308918237] [2021-11-02 14:02:15,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 14:02:15,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:02:15,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 14:02:15,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 14:02:15,826 INFO L87 Difference]: Start difference. First operand 2056 states and 2649 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:02:17,863 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:02:31,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:02:31,377 INFO L93 Difference]: Finished difference Result 2179 states and 2815 transitions. [2021-11-02 14:02:31,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 14:02:31,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-02 14:02:31,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:02:31,385 INFO L225 Difference]: With dead ends: 2179 [2021-11-02 14:02:31,385 INFO L226 Difference]: Without dead ends: 2057 [2021-11-02 14:02:31,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.59ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 14:02:31,387 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 2641 mSDsCounter, 0 mSdLazyCounter, 5295 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14196.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.37ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5295 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15356.38ms IncrementalHoareTripleChecker+Time [2021-11-02 14:02:31,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 5296 Unknown, 0 Unchecked, 25.37ms Time], IncrementalHoareTripleChecker [0 Valid, 5295 Invalid, 1 Unknown, 0 Unchecked, 15356.38ms Time] [2021-11-02 14:02:31,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2057 states. [2021-11-02 14:02:31,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2057 to 2057. [2021-11-02 14:02:31,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 2003 states have (on average 1.3230154767848228) internal successors, (2650), 2056 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:02:31,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2650 transitions. [2021-11-02 14:02:31,424 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2650 transitions. Word has length 65 [2021-11-02 14:02:31,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:02:31,425 INFO L470 AbstractCegarLoop]: Abstraction has 2057 states and 2650 transitions. [2021-11-02 14:02:31,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:02:31,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2650 transitions. [2021-11-02 14:02:31,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-02 14:02:31,428 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:02:31,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:02:31,450 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-02 14:02:31,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:02:31,650 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-02 14:02:31,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:02:31,650 INFO L85 PathProgramCache]: Analyzing trace with hash 61465685, now seen corresponding path program 1 times [2021-11-02 14:02:31,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:02:31,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518999196] [2021-11-02 14:02:31,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:02:31,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:02:31,708 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:02:31,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [446080779] [2021-11-02 14:02:31,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:02:31,709 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:02:31,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:02:31,710 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) [2021-11-02 14:02:31,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 14:02:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:02:32,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 2660 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 14:02:32,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:02:32,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:02:32,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:02:32,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:02:32,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518999196] [2021-11-02 14:02:32,798 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:02:32,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446080779] [2021-11-02 14:02:32,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446080779] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:02:32,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:02:32,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 14:02:32,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029686380] [2021-11-02 14:02:32,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 14:02:32,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:02:32,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 14:02:32,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 14:02:32,800 INFO L87 Difference]: Start difference. First operand 2057 states and 2650 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:02:34,835 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:02:56,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:02:56,548 INFO L93 Difference]: Finished difference Result 5594 states and 7164 transitions. [2021-11-02 14:02:56,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 14:02:56,549 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-02 14:02:56,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:02:56,558 INFO L225 Difference]: With dead ends: 5594 [2021-11-02 14:02:56,558 INFO L226 Difference]: Without dead ends: 3616 [2021-11-02 14:02:56,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 182.80ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-02 14:02:56,561 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 11627 mSDsluCounter, 4537 mSDsCounter, 0 mSdLazyCounter, 7466 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21372.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11627 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 91.16ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 7466 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23148.80ms IncrementalHoareTripleChecker+Time [2021-11-02 14:02:56,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11627 Valid, 0 Invalid, 7484 Unknown, 0 Unchecked, 91.16ms Time], IncrementalHoareTripleChecker [17 Valid, 7466 Invalid, 1 Unknown, 0 Unchecked, 23148.80ms Time] [2021-11-02 14:02:56,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3616 states. [2021-11-02 14:02:56,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3616 to 2057. [2021-11-02 14:02:56,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 2003 states have (on average 1.3215177234148776) internal successors, (2647), 2056 states have internal predecessors, (2647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:02:56,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2647 transitions. [2021-11-02 14:02:56,602 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2647 transitions. Word has length 73 [2021-11-02 14:02:56,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:02:56,602 INFO L470 AbstractCegarLoop]: Abstraction has 2057 states and 2647 transitions. [2021-11-02 14:02:56,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:02:56,602 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2647 transitions. [2021-11-02 14:02:56,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-02 14:02:56,603 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:02:56,603 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:02:56,626 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-02 14:02:56,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:02:56,816 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-02 14:02:56,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:02:56,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1420657039, now seen corresponding path program 1 times [2021-11-02 14:02:56,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:02:56,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609971556] [2021-11-02 14:02:56,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:02:56,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:02:56,877 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:02:56,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [384431063] [2021-11-02 14:02:56,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:02:56,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:02:56,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:02:56,879 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) [2021-11-02 14:02:56,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 14:02:57,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:02:57,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 2765 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-02 14:02:57,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:02:58,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:02:58,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:02:58,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:02:58,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609971556] [2021-11-02 14:02:58,050 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:02:58,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384431063] [2021-11-02 14:02:58,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384431063] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:02:58,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:02:58,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 14:02:58,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411117094] [2021-11-02 14:02:58,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 14:02:58,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:02:58,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 14:02:58,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 14:02:58,052 INFO L87 Difference]: Start difference. First operand 2057 states and 2647 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:03:00,089 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:03:33,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:03:33,184 INFO L93 Difference]: Finished difference Result 8487 states and 10773 transitions. [2021-11-02 14:03:33,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 14:03:33,184 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-02 14:03:33,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:03:33,200 INFO L225 Difference]: With dead ends: 8487 [2021-11-02 14:03:33,200 INFO L226 Difference]: Without dead ends: 6493 [2021-11-02 14:03:33,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 184.87ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-02 14:03:33,203 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 14361 mSDsluCounter, 8354 mSDsCounter, 0 mSdLazyCounter, 11698 mSolverCounterSat, 56 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31373.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14361 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 91.83ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 11698 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34303.65ms IncrementalHoareTripleChecker+Time [2021-11-02 14:03:33,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14361 Valid, 0 Invalid, 11755 Unknown, 0 Unchecked, 91.83ms Time], IncrementalHoareTripleChecker [56 Valid, 11698 Invalid, 1 Unknown, 0 Unchecked, 34303.65ms Time] [2021-11-02 14:03:33,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6493 states. [2021-11-02 14:03:33,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6493 to 2057. [2021-11-02 14:03:33,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 2003 states have (on average 1.3200199700449327) internal successors, (2644), 2056 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:03:33,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2644 transitions. [2021-11-02 14:03:33,257 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2644 transitions. Word has length 97 [2021-11-02 14:03:33,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:03:33,257 INFO L470 AbstractCegarLoop]: Abstraction has 2057 states and 2644 transitions. [2021-11-02 14:03:33,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:03:33,258 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2644 transitions. [2021-11-02 14:03:33,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-02 14:03:33,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:03:33,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:03:33,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 14:03:33,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:03:33,476 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-02 14:03:33,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:03:33,476 INFO L85 PathProgramCache]: Analyzing trace with hash 883061289, now seen corresponding path program 1 times [2021-11-02 14:03:33,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:03:33,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177866438] [2021-11-02 14:03:33,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:03:33,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:03:33,548 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:03:33,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1608019332] [2021-11-02 14:03:33,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:03:33,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:03:33,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:03:33,550 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) [2021-11-02 14:03:33,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 14:03:34,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:03:34,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 2955 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 14:03:34,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:03:34,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:03:34,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:03:34,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:03:34,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177866438] [2021-11-02 14:03:34,986 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:03:34,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608019332] [2021-11-02 14:03:34,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608019332] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:03:34,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:03:34,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 14:03:34,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4635872] [2021-11-02 14:03:34,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 14:03:34,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:03:34,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 14:03:34,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 14:03:34,987 INFO L87 Difference]: Start difference. First operand 2057 states and 2644 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:03:37,025 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:03:51,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:03:51,378 INFO L93 Difference]: Finished difference Result 4450 states and 5708 transitions. [2021-11-02 14:03:51,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 14:03:51,378 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-02 14:03:51,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:03:51,384 INFO L225 Difference]: With dead ends: 4450 [2021-11-02 14:03:51,384 INFO L226 Difference]: Without dead ends: 2589 [2021-11-02 14:03:51,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 163.78ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-02 14:03:51,387 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 10889 mSDsluCounter, 2142 mSDsCounter, 0 mSdLazyCounter, 4891 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14465.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10889 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.21ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 4891 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15974.91ms IncrementalHoareTripleChecker+Time [2021-11-02 14:03:51,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10889 Valid, 0 Invalid, 4911 Unknown, 0 Unchecked, 41.21ms Time], IncrementalHoareTripleChecker [19 Valid, 4891 Invalid, 1 Unknown, 0 Unchecked, 15974.91ms Time] [2021-11-02 14:03:51,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2589 states. [2021-11-02 14:03:51,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2589 to 2057. [2021-11-02 14:03:51,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 2003 states have (on average 1.3185222166749875) internal successors, (2641), 2056 states have internal predecessors, (2641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:03:51,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2641 transitions. [2021-11-02 14:03:51,431 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2641 transitions. Word has length 113 [2021-11-02 14:03:51,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:03:51,432 INFO L470 AbstractCegarLoop]: Abstraction has 2057 states and 2641 transitions. [2021-11-02 14:03:51,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:03:51,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2641 transitions. [2021-11-02 14:03:51,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-02 14:03:51,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:03:51,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:03:51,471 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-02 14:03:51,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:03:51,647 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-02 14:03:51,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:03:51,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1442612120, now seen corresponding path program 1 times [2021-11-02 14:03:51,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:03:51,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464096476] [2021-11-02 14:03:51,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:03:51,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:03:51,728 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:03:51,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1316454029] [2021-11-02 14:03:51,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:03:51,729 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:03:51,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:03:51,730 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) [2021-11-02 14:03:51,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 14:03:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:03:52,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 2986 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-02 14:03:52,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:03:53,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:03:53,102 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:03:53,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:03:53,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464096476] [2021-11-02 14:03:53,102 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:03:53,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316454029] [2021-11-02 14:03:53,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316454029] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:03:53,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:03:53,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 14:03:53,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183925834] [2021-11-02 14:03:53,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 14:03:53,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:03:53,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 14:03:53,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 14:03:53,104 INFO L87 Difference]: Start difference. First operand 2057 states and 2641 transitions. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:03:56,241 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:04:21,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:04:21,362 INFO L93 Difference]: Finished difference Result 5356 states and 6827 transitions. [2021-11-02 14:04:21,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 14:04:21,362 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-11-02 14:04:21,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:04:21,371 INFO L225 Difference]: With dead ends: 5356 [2021-11-02 14:04:21,372 INFO L226 Difference]: Without dead ends: 3463 [2021-11-02 14:04:21,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 198.04ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-02 14:04:21,375 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 10912 mSDsluCounter, 4161 mSDsCounter, 0 mSdLazyCounter, 7411 mSolverCounterSat, 44 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24977.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10912 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 77.20ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 7411 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27604.52ms IncrementalHoareTripleChecker+Time [2021-11-02 14:04:21,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10912 Valid, 0 Invalid, 7456 Unknown, 0 Unchecked, 77.20ms Time], IncrementalHoareTripleChecker [44 Valid, 7411 Invalid, 1 Unknown, 0 Unchecked, 27604.52ms Time] [2021-11-02 14:04:21,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3463 states. [2021-11-02 14:04:21,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3463 to 2057. [2021-11-02 14:04:21,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 2003 states have (on average 1.3170244633050425) internal successors, (2638), 2056 states have internal predecessors, (2638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:04:21,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2638 transitions. [2021-11-02 14:04:21,434 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2638 transitions. Word has length 117 [2021-11-02 14:04:21,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:04:21,434 INFO L470 AbstractCegarLoop]: Abstraction has 2057 states and 2638 transitions. [2021-11-02 14:04:21,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:04:21,434 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2638 transitions. [2021-11-02 14:04:21,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-02 14:04:21,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:04:21,435 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:04:21,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-02 14:04:21,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:04:21,645 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-02 14:04:21,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:04:21,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1184403276, now seen corresponding path program 1 times [2021-11-02 14:04:21,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:04:21,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505071645] [2021-11-02 14:04:21,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:04:21,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:04:21,718 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:04:21,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644871709] [2021-11-02 14:04:21,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:04:21,719 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:04:21,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:04:21,720 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) [2021-11-02 14:04:21,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-02 14:04:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:04:22,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 3081 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-02 14:04:22,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:04:23,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:04:23,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:04:23,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:04:23,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505071645] [2021-11-02 14:04:23,435 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:04:23,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644871709] [2021-11-02 14:04:23,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644871709] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:04:23,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:04:23,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 14:04:23,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959954577] [2021-11-02 14:04:23,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 14:04:23,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:04:23,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 14:04:23,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 14:04:23,436 INFO L87 Difference]: Start difference. First operand 2057 states and 2638 transitions. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:04:26,006 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.57s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:04:53,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:04:53,351 INFO L93 Difference]: Finished difference Result 5936 states and 7570 transitions. [2021-11-02 14:04:53,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 14:04:53,351 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-02 14:04:53,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:04:53,362 INFO L225 Difference]: With dead ends: 5936 [2021-11-02 14:04:53,362 INFO L226 Difference]: Without dead ends: 4074 [2021-11-02 14:04:53,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 390.43ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-02 14:04:53,365 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 19459 mSDsluCounter, 4190 mSDsCounter, 0 mSdLazyCounter, 7075 mSolverCounterSat, 51 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25817.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19459 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 106.30ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 7075 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28945.32ms IncrementalHoareTripleChecker+Time [2021-11-02 14:04:53,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19459 Valid, 0 Invalid, 7127 Unknown, 0 Unchecked, 106.30ms Time], IncrementalHoareTripleChecker [51 Valid, 7075 Invalid, 1 Unknown, 0 Unchecked, 28945.32ms Time] [2021-11-02 14:04:53,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4074 states. [2021-11-02 14:04:53,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4074 to 2057. [2021-11-02 14:04:53,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 2003 states have (on average 1.3155267099350973) internal successors, (2635), 2056 states have internal predecessors, (2635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:04:53,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2635 transitions. [2021-11-02 14:04:53,422 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2635 transitions. Word has length 125 [2021-11-02 14:04:53,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:04:53,422 INFO L470 AbstractCegarLoop]: Abstraction has 2057 states and 2635 transitions. [2021-11-02 14:04:53,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:04:53,423 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2635 transitions. [2021-11-02 14:04:53,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-02 14:04:53,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:04:53,424 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:04:53,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-02 14:04:53,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:04:53,639 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-02 14:04:53,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:04:53,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1283216539, now seen corresponding path program 1 times [2021-11-02 14:04:53,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:04:53,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595679689] [2021-11-02 14:04:53,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:04:53,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:04:53,712 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:04:53,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [115979438] [2021-11-02 14:04:53,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:04:53,713 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:04:53,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:04:53,714 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) [2021-11-02 14:04:53,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-02 14:04:54,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:04:54,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 3131 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-02 14:04:54,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:04:55,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:04:55,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:04:55,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:04:55,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595679689] [2021-11-02 14:04:55,665 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:04:55,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115979438] [2021-11-02 14:04:55,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115979438] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:04:55,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:04:55,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 14:04:55,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865169376] [2021-11-02 14:04:55,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 14:04:55,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:04:55,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 14:04:55,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-02 14:04:55,667 INFO L87 Difference]: Start difference. First operand 2057 states and 2635 transitions. Second operand has 8 states, 8 states have (on average 17.125) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:04:57,710 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:05:30,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:05:30,188 INFO L93 Difference]: Finished difference Result 5964 states and 7602 transitions. [2021-11-02 14:05:30,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-02 14:05:30,189 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-02 14:05:30,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:05:30,199 INFO L225 Difference]: With dead ends: 5964 [2021-11-02 14:05:30,199 INFO L226 Difference]: Without dead ends: 4086 [2021-11-02 14:05:30,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 647.03ms TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2021-11-02 14:05:30,202 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 19893 mSDsluCounter, 5825 mSDsCounter, 0 mSdLazyCounter, 9263 mSolverCounterSat, 123 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30113.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19893 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 111.49ms SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 9263 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33397.11ms IncrementalHoareTripleChecker+Time [2021-11-02 14:05:30,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19893 Valid, 0 Invalid, 9387 Unknown, 0 Unchecked, 111.49ms Time], IncrementalHoareTripleChecker [123 Valid, 9263 Invalid, 1 Unknown, 0 Unchecked, 33397.11ms Time] [2021-11-02 14:05:30,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4086 states. [2021-11-02 14:05:30,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4086 to 2057. [2021-11-02 14:05:30,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 2003 states have (on average 1.3140289565651522) internal successors, (2632), 2056 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:05:30,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2632 transitions. [2021-11-02 14:05:30,254 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2632 transitions. Word has length 137 [2021-11-02 14:05:30,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:05:30,254 INFO L470 AbstractCegarLoop]: Abstraction has 2057 states and 2632 transitions. [2021-11-02 14:05:30,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:05:30,255 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2632 transitions. [2021-11-02 14:05:30,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-02 14:05:30,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:05:30,256 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:05:30,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-02 14:05:30,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:05:30,464 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-02 14:05:30,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:05:30,465 INFO L85 PathProgramCache]: Analyzing trace with hash -561648695, now seen corresponding path program 1 times [2021-11-02 14:05:30,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:05:30,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770867486] [2021-11-02 14:05:30,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:05:30,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:05:30,554 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:05:30,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1091604185] [2021-11-02 14:05:30,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:05:30,554 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:05:30,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:05:30,555 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 14:05:30,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-02 14:05:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:05:31,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 3226 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 14:05:31,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:05:32,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:05:32,379 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:05:32,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:05:32,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770867486] [2021-11-02 14:05:32,379 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:05:32,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091604185] [2021-11-02 14:05:32,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091604185] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:05:32,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:05:32,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 14:05:32,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666976283] [2021-11-02 14:05:32,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 14:05:32,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:05:32,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 14:05:32,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 14:05:32,381 INFO L87 Difference]: Start difference. First operand 2057 states and 2632 transitions. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:05:35,604 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:06:03,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:06:03,366 INFO L93 Difference]: Finished difference Result 5844 states and 7469 transitions. [2021-11-02 14:06:03,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 14:06:03,366 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-11-02 14:06:03,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:06:03,373 INFO L225 Difference]: With dead ends: 5844 [2021-11-02 14:06:03,374 INFO L226 Difference]: Without dead ends: 3992 [2021-11-02 14:06:03,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 315.45ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-02 14:06:03,377 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 15132 mSDsluCounter, 4123 mSDsCounter, 0 mSdLazyCounter, 8190 mSolverCounterSat, 39 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26920.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15132 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 79.03ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 8190 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30216.10ms IncrementalHoareTripleChecker+Time [2021-11-02 14:06:03,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15132 Valid, 0 Invalid, 8230 Unknown, 0 Unchecked, 79.03ms Time], IncrementalHoareTripleChecker [39 Valid, 8190 Invalid, 1 Unknown, 0 Unchecked, 30216.10ms Time] [2021-11-02 14:06:03,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3992 states. [2021-11-02 14:06:03,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3992 to 2057. [2021-11-02 14:06:03,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 2003 states have (on average 1.3130304543185223) internal successors, (2630), 2056 states have internal predecessors, (2630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:06:03,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2630 transitions. [2021-11-02 14:06:03,475 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2630 transitions. Word has length 145 [2021-11-02 14:06:03,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:06:03,475 INFO L470 AbstractCegarLoop]: Abstraction has 2057 states and 2630 transitions. [2021-11-02 14:06:03,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:06:03,480 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2630 transitions. [2021-11-02 14:06:03,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-02 14:06:03,481 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:06:03,482 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:06:03,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-02 14:06:03,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-02 14:06:03,695 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-02 14:06:03,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:06:03,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1953947592, now seen corresponding path program 1 times [2021-11-02 14:06:03,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:06:03,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522862936] [2021-11-02 14:06:03,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:06:03,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:06:03,766 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:06:03,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1109188631] [2021-11-02 14:06:03,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:06:03,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:06:03,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:06:03,767 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) [2021-11-02 14:06:03,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-02 14:06:04,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:06:04,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 3257 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-02 14:06:04,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:06:05,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:06:05,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:06:05,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:06:05,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522862936] [2021-11-02 14:06:05,559 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:06:05,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109188631] [2021-11-02 14:06:05,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109188631] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:06:05,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:06:05,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 14:06:05,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210683436] [2021-11-02 14:06:05,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 14:06:05,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:06:05,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 14:06:05,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 14:06:05,561 INFO L87 Difference]: Start difference. First operand 2057 states and 2630 transitions. Second operand has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:06:08,448 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.89s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:06:52,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:06:52,244 INFO L93 Difference]: Finished difference Result 6750 states and 8586 transitions. [2021-11-02 14:06:52,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 14:06:52,244 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2021-11-02 14:06:52,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:06:52,251 INFO L225 Difference]: With dead ends: 6750 [2021-11-02 14:06:52,251 INFO L226 Difference]: Without dead ends: 4898 [2021-11-02 14:06:52,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 434.62ms TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2021-11-02 14:06:52,253 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 13901 mSDsluCounter, 7107 mSDsCounter, 0 mSdLazyCounter, 12081 mSolverCounterSat, 53 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40231.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13901 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 129.06ms SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 12081 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45507.67ms IncrementalHoareTripleChecker+Time [2021-11-02 14:06:52,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13901 Valid, 0 Invalid, 12135 Unknown, 0 Unchecked, 129.06ms Time], IncrementalHoareTripleChecker [53 Valid, 12081 Invalid, 1 Unknown, 0 Unchecked, 45507.67ms Time] [2021-11-02 14:06:52,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4898 states. [2021-11-02 14:06:52,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4898 to 2057. [2021-11-02 14:06:52,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 2003 states have (on average 1.311033449825262) internal successors, (2626), 2056 states have internal predecessors, (2626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:06:52,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2626 transitions. [2021-11-02 14:06:52,315 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2626 transitions. Word has length 149 [2021-11-02 14:06:52,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:06:52,316 INFO L470 AbstractCegarLoop]: Abstraction has 2057 states and 2626 transitions. [2021-11-02 14:06:52,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:06:52,316 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2626 transitions. [2021-11-02 14:06:52,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-02 14:06:52,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:06:52,317 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:06:52,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-02 14:06:52,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:06:52,535 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-02 14:06:52,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:06:52,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1844158272, now seen corresponding path program 1 times [2021-11-02 14:06:52,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:06:52,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987577513] [2021-11-02 14:06:52,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:06:52,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:06:52,592 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:06:52,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [894350443] [2021-11-02 14:06:52,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:06:52,593 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:06:52,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:06:52,594 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) [2021-11-02 14:06:52,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-02 14:06:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:06:53,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 3251 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-02 14:06:53,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:06:54,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:06:54,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:06:54,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:06:54,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987577513] [2021-11-02 14:06:54,275 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:06:54,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894350443] [2021-11-02 14:06:54,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894350443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:06:54,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:06:54,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 14:06:54,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071767647] [2021-11-02 14:06:54,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 14:06:54,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:06:54,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 14:06:54,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 14:06:54,276 INFO L87 Difference]: Start difference. First operand 2057 states and 2626 transitions. Second operand has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 7 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:06:57,026 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.75s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:07:25,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:07:25,251 INFO L93 Difference]: Finished difference Result 3396 states and 4344 transitions. [2021-11-02 14:07:25,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 14:07:25,252 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 7 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-11-02 14:07:25,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:07:25,255 INFO L225 Difference]: With dead ends: 3396 [2021-11-02 14:07:25,255 INFO L226 Difference]: Without dead ends: 2381 [2021-11-02 14:07:25,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 250.59ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-02 14:07:25,257 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 7281 mSDsluCounter, 6187 mSDsCounter, 0 mSdLazyCounter, 9671 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27359.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7281 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 77.92ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 9671 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30374.06ms IncrementalHoareTripleChecker+Time [2021-11-02 14:07:25,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7281 Valid, 0 Invalid, 9690 Unknown, 0 Unchecked, 77.92ms Time], IncrementalHoareTripleChecker [18 Valid, 9671 Invalid, 1 Unknown, 0 Unchecked, 30374.06ms Time] [2021-11-02 14:07:25,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2021-11-02 14:07:25,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 2057. [2021-11-02 14:07:25,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 2003 states have (on average 1.308537194208687) internal successors, (2621), 2056 states have internal predecessors, (2621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:07:25,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2621 transitions. [2021-11-02 14:07:25,314 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2621 transitions. Word has length 150 [2021-11-02 14:07:25,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:07:25,314 INFO L470 AbstractCegarLoop]: Abstraction has 2057 states and 2621 transitions. [2021-11-02 14:07:25,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 7 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:07:25,314 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2621 transitions. [2021-11-02 14:07:25,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-02 14:07:25,315 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:07:25,316 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:07:25,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-02 14:07:25,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-02 14:07:25,540 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-02 14:07:25,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:07:25,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1758983980, now seen corresponding path program 1 times [2021-11-02 14:07:25,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:07:25,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831074325] [2021-11-02 14:07:25,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:07:25,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:07:25,589 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:07:25,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [653520643] [2021-11-02 14:07:25,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:07:25,590 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:07:25,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:07:25,591 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) [2021-11-02 14:07:25,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-02 14:07:26,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:07:26,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 3352 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-02 14:07:26,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:07:27,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:07:27,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:07:27,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:07:27,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831074325] [2021-11-02 14:07:27,290 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:07:27,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653520643] [2021-11-02 14:07:27,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653520643] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:07:27,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:07:27,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 14:07:27,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886004289] [2021-11-02 14:07:27,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 14:07:27,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:07:27,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 14:07:27,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-02 14:07:27,291 INFO L87 Difference]: Start difference. First operand 2057 states and 2621 transitions. Second operand has 8 states, 8 states have (on average 19.625) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:07:29,328 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:08:08,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:08:08,428 INFO L93 Difference]: Finished difference Result 7709 states and 9778 transitions. [2021-11-02 14:08:08,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-02 14:08:08,429 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.625) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2021-11-02 14:08:08,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:08:08,450 INFO L225 Difference]: With dead ends: 7709 [2021-11-02 14:08:08,450 INFO L226 Difference]: Without dead ends: 5857 [2021-11-02 14:08:08,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 476.85ms TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2021-11-02 14:08:08,453 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 23631 mSDsluCounter, 6604 mSDsCounter, 0 mSdLazyCounter, 10867 mSolverCounterSat, 100 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34967.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23631 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 124.16ms SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 10867 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39859.27ms IncrementalHoareTripleChecker+Time [2021-11-02 14:08:08,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23631 Valid, 0 Invalid, 10968 Unknown, 0 Unchecked, 124.16ms Time], IncrementalHoareTripleChecker [100 Valid, 10867 Invalid, 1 Unknown, 0 Unchecked, 39859.27ms Time] [2021-11-02 14:08:08,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5857 states. [2021-11-02 14:08:08,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5857 to 2057. [2021-11-02 14:08:08,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 2003 states have (on average 1.3075386919620569) internal successors, (2619), 2056 states have internal predecessors, (2619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:08:08,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2619 transitions. [2021-11-02 14:08:08,560 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2619 transitions. Word has length 157 [2021-11-02 14:08:08,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:08:08,561 INFO L470 AbstractCegarLoop]: Abstraction has 2057 states and 2619 transitions. [2021-11-02 14:08:08,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.625) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:08:08,561 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2619 transitions. [2021-11-02 14:08:08,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-02 14:08:08,563 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:08:08,563 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:08:08,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-02 14:08:08,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-02 14:08:08,776 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-02 14:08:08,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:08:08,776 INFO L85 PathProgramCache]: Analyzing trace with hash 748769034, now seen corresponding path program 1 times [2021-11-02 14:08:08,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:08:08,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161987857] [2021-11-02 14:08:08,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:08:08,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:08:08,827 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:08:08,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [471062604] [2021-11-02 14:08:08,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:08:08,828 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:08:08,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:08:08,829 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) [2021-11-02 14:08:08,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-02 14:08:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:08:09,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 3436 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 14:08:09,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:08:09,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:08:09,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:08:09,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:08:09,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161987857] [2021-11-02 14:08:09,855 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:08:09,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471062604] [2021-11-02 14:08:09,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471062604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:08:09,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:08:09,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 14:08:09,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190267509] [2021-11-02 14:08:09,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 14:08:09,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:08:09,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 14:08:09,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 14:08:09,856 INFO L87 Difference]: Start difference. First operand 2057 states and 2619 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:08:12,719 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.86s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:08:41,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:08:41,613 INFO L93 Difference]: Finished difference Result 4452 states and 5720 transitions. [2021-11-02 14:08:41,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 14:08:41,615 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2021-11-02 14:08:41,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:08:41,618 INFO L225 Difference]: With dead ends: 4452 [2021-11-02 14:08:41,618 INFO L226 Difference]: Without dead ends: 2442 [2021-11-02 14:08:41,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.13ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:08:41,622 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 578 mSDsluCounter, 4156 mSDsCounter, 0 mSdLazyCounter, 8158 mSolverCounterSat, 305 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27599.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.80ms SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 8158 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31317.15ms IncrementalHoareTripleChecker+Time [2021-11-02 14:08:41,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 0 Invalid, 8464 Unknown, 0 Unchecked, 45.80ms Time], IncrementalHoareTripleChecker [305 Valid, 8158 Invalid, 1 Unknown, 0 Unchecked, 31317.15ms Time] [2021-11-02 14:08:41,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2021-11-02 14:08:41,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 2211. [2021-11-02 14:08:41,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2211 states, 2157 states have (on average 1.285581826611034) internal successors, (2773), 2210 states have internal predecessors, (2773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:08:41,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2211 states to 2211 states and 2773 transitions. [2021-11-02 14:08:41,705 INFO L78 Accepts]: Start accepts. Automaton has 2211 states and 2773 transitions. Word has length 166 [2021-11-02 14:08:41,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:08:41,706 INFO L470 AbstractCegarLoop]: Abstraction has 2211 states and 2773 transitions. [2021-11-02 14:08:41,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:08:41,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2211 states and 2773 transitions. [2021-11-02 14:08:41,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-02 14:08:41,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:08:41,708 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:08:41,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-02 14:08:41,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-02 14:08:41,920 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-02 14:08:41,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:08:41,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1857254520, now seen corresponding path program 1 times [2021-11-02 14:08:41,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:08:41,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891739304] [2021-11-02 14:08:41,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:08:41,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:08:41,979 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:08:41,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [609998179] [2021-11-02 14:08:41,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:08:41,980 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:08:41,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:08:41,981 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) [2021-11-02 14:08:41,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-02 14:08:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:08:42,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 3441 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 14:08:42,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:08:43,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:08:43,549 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:08:43,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:08:43,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891739304] [2021-11-02 14:08:43,549 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:08:43,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609998179] [2021-11-02 14:08:43,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609998179] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:08:43,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:08:43,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 14:08:43,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580081871] [2021-11-02 14:08:43,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 14:08:43,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:08:43,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 14:08:43,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 14:08:43,550 INFO L87 Difference]: Start difference. First operand 2211 states and 2773 transitions. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:08:46,397 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.85s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:09:57,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:09:57,046 INFO L93 Difference]: Finished difference Result 6154 states and 7706 transitions. [2021-11-02 14:09:57,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 14:09:57,048 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2021-11-02 14:09:57,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:09:57,056 INFO L225 Difference]: With dead ends: 6154 [2021-11-02 14:09:57,057 INFO L226 Difference]: Without dead ends: 4016 [2021-11-02 14:09:57,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 362.14ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-02 14:09:57,061 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2031 mSDsluCounter, 12248 mSDsCounter, 0 mSdLazyCounter, 19749 mSolverCounterSat, 91 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63027.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2031 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 130.29ms SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 19749 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72502.49ms IncrementalHoareTripleChecker+Time [2021-11-02 14:09:57,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2031 Valid, 0 Invalid, 19841 Unknown, 0 Unchecked, 130.29ms Time], IncrementalHoareTripleChecker [91 Valid, 19749 Invalid, 1 Unknown, 0 Unchecked, 72502.49ms Time] [2021-11-02 14:09:57,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4016 states. [2021-11-02 14:09:57,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4016 to 2259. [2021-11-02 14:09:57,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2259 states, 2205 states have (on average 1.2848072562358277) internal successors, (2833), 2258 states have internal predecessors, (2833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:09:57,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2259 states to 2259 states and 2833 transitions. [2021-11-02 14:09:57,154 INFO L78 Accepts]: Start accepts. Automaton has 2259 states and 2833 transitions. Word has length 166 [2021-11-02 14:09:57,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:09:57,154 INFO L470 AbstractCegarLoop]: Abstraction has 2259 states and 2833 transitions. [2021-11-02 14:09:57,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:09:57,155 INFO L276 IsEmpty]: Start isEmpty. Operand 2259 states and 2833 transitions. [2021-11-02 14:09:57,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-02 14:09:57,155 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:09:57,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:09:57,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-02 14:09:57,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-02 14:09:57,368 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-02 14:09:57,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:09:57,368 INFO L85 PathProgramCache]: Analyzing trace with hash -76596988, now seen corresponding path program 1 times [2021-11-02 14:09:57,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:09:57,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366437983] [2021-11-02 14:09:57,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:09:57,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:09:57,440 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:09:57,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [709556438] [2021-11-02 14:09:57,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:09:57,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:09:57,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:09:57,442 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) [2021-11-02 14:09:57,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-02 14:09:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:09:58,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 3435 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 14:09:58,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:09:58,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:09:58,714 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:09:58,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:09:58,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366437983] [2021-11-02 14:09:58,714 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:09:58,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709556438] [2021-11-02 14:09:58,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709556438] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:09:58,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:09:58,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 14:09:58,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821984781] [2021-11-02 14:09:58,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 14:09:58,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:09:58,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 14:09:58,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 14:09:58,715 INFO L87 Difference]: Start difference. First operand 2259 states and 2833 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:10:00,770 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:10:28,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:10:28,511 INFO L93 Difference]: Finished difference Result 4487 states and 5628 transitions. [2021-11-02 14:10:28,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 14:10:28,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2021-11-02 14:10:28,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:10:28,514 INFO L225 Difference]: With dead ends: 4487 [2021-11-02 14:10:28,514 INFO L226 Difference]: Without dead ends: 2307 [2021-11-02 14:10:28,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.74ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:10:28,516 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 32 mSDsluCounter, 5102 mSDsCounter, 0 mSdLazyCounter, 7859 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25431.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.67ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 7859 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29395.48ms IncrementalHoareTripleChecker+Time [2021-11-02 14:10:28,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 0 Invalid, 7905 Unknown, 0 Unchecked, 41.67ms Time], IncrementalHoareTripleChecker [45 Valid, 7859 Invalid, 1 Unknown, 0 Unchecked, 29395.48ms Time] [2021-11-02 14:10:28,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2307 states. [2021-11-02 14:10:28,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2307 to 2283. [2021-11-02 14:10:28,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2283 states, 2229 states have (on average 1.281740690892777) internal successors, (2857), 2282 states have internal predecessors, (2857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:10:28,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 2857 transitions. [2021-11-02 14:10:28,588 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 2857 transitions. Word has length 166 [2021-11-02 14:10:28,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:10:28,588 INFO L470 AbstractCegarLoop]: Abstraction has 2283 states and 2857 transitions. [2021-11-02 14:10:28,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:10:28,588 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 2857 transitions. [2021-11-02 14:10:28,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-02 14:10:28,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:10:28,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:10:28,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-02 14:10:28,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:10:28,790 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-02 14:10:28,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:10:28,790 INFO L85 PathProgramCache]: Analyzing trace with hash -266922624, now seen corresponding path program 1 times [2021-11-02 14:10:28,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:10:28,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373139120] [2021-11-02 14:10:28,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:10:28,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:10:28,847 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:10:28,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [420700522] [2021-11-02 14:10:28,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:10:28,848 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:10:28,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:10:28,849 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) [2021-11-02 14:10:28,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-02 14:10:29,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:10:29,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 3425 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-02 14:10:29,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:10:30,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:10:30,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:10:30,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:10:30,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373139120] [2021-11-02 14:10:30,235 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:10:30,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420700522] [2021-11-02 14:10:30,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420700522] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:10:30,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:10:30,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 14:10:30,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300382135] [2021-11-02 14:10:30,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 14:10:30,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:10:30,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 14:10:30,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:10:30,236 INFO L87 Difference]: Start difference. First operand 2283 states and 2857 transitions. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:10:32,283 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:11:37,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:11:37,127 INFO L93 Difference]: Finished difference Result 6422 states and 8018 transitions. [2021-11-02 14:11:37,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 14:11:37,128 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2021-11-02 14:11:37,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:11:37,135 INFO L225 Difference]: With dead ends: 6422 [2021-11-02 14:11:37,136 INFO L226 Difference]: Without dead ends: 4227 [2021-11-02 14:11:37,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 82.16ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 14:11:37,140 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2323 mSDsluCounter, 11807 mSDsCounter, 0 mSdLazyCounter, 16838 mSolverCounterSat, 56 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56342.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2323 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 16895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 108.78ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 16838 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66060.11ms IncrementalHoareTripleChecker+Time [2021-11-02 14:11:37,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2323 Valid, 0 Invalid, 16895 Unknown, 0 Unchecked, 108.78ms Time], IncrementalHoareTripleChecker [56 Valid, 16838 Invalid, 1 Unknown, 0 Unchecked, 66060.11ms Time] [2021-11-02 14:11:37,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4227 states. [2021-11-02 14:11:37,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4227 to 2379. [2021-11-02 14:11:37,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2379 states, 2325 states have (on average 1.2804301075268818) internal successors, (2977), 2378 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:11:37,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2379 states to 2379 states and 2977 transitions. [2021-11-02 14:11:37,256 INFO L78 Accepts]: Start accepts. Automaton has 2379 states and 2977 transitions. Word has length 166 [2021-11-02 14:11:37,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:11:37,257 INFO L470 AbstractCegarLoop]: Abstraction has 2379 states and 2977 transitions. [2021-11-02 14:11:37,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:11:37,257 INFO L276 IsEmpty]: Start isEmpty. Operand 2379 states and 2977 transitions. [2021-11-02 14:11:37,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-02 14:11:37,258 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:11:37,259 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:11:37,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-02 14:11:37,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-02 14:11:37,472 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-02 14:11:37,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:11:37,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1151624642, now seen corresponding path program 1 times [2021-11-02 14:11:37,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:11:37,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739881096] [2021-11-02 14:11:37,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:11:37,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:11:37,532 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:11:37,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [314357104] [2021-11-02 14:11:37,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:11:37,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:11:37,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:11:37,534 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) [2021-11-02 14:11:37,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-02 14:11:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:11:38,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 3422 conjuncts, 74 conjunts are in the unsatisfiable core [2021-11-02 14:11:38,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:11:40,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-02 14:11:40,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-02 14:11:41,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:11:41,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:11:41,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:11:41,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739881096] [2021-11-02 14:11:41,046 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:11:41,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314357104] [2021-11-02 14:11:41,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314357104] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:11:41,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:11:41,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-02 14:11:41,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638203259] [2021-11-02 14:11:41,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 14:11:41,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:11:41,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 14:11:41,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-02 14:11:41,048 INFO L87 Difference]: Start difference. First operand 2379 states and 2977 transitions. Second operand has 13 states, 13 states have (on average 12.76923076923077) internal successors, (166), 13 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:11:44,429 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:14:50,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:14:50,972 INFO L93 Difference]: Finished difference Result 6783 states and 8456 transitions. [2021-11-02 14:14:50,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-02 14:14:50,973 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.76923076923077) internal successors, (166), 13 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2021-11-02 14:14:50,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:14:50,977 INFO L225 Difference]: With dead ends: 6783 [2021-11-02 14:14:50,977 INFO L226 Difference]: Without dead ends: 4500 [2021-11-02 14:14:50,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 4463.80ms TimeCoverageRelationStatistics Valid=455, Invalid=1707, Unknown=0, NotChecked=0, Total=2162 [2021-11-02 14:14:50,980 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6107 mSDsluCounter, 39103 mSDsCounter, 0 mSdLazyCounter, 49799 mSolverCounterSat, 165 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 160006.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6107 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 49965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 389.12ms SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 49799 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 184594.60ms IncrementalHoareTripleChecker+Time [2021-11-02 14:14:50,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6107 Valid, 0 Invalid, 49965 Unknown, 0 Unchecked, 389.12ms Time], IncrementalHoareTripleChecker [165 Valid, 49799 Invalid, 1 Unknown, 0 Unchecked, 184594.60ms Time] [2021-11-02 14:14:50,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4500 states. [2021-11-02 14:14:51,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4500 to 2462. [2021-11-02 14:14:51,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2462 states, 2408 states have (on average 1.2799003322259137) internal successors, (3082), 2461 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:14:51,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2462 states to 2462 states and 3082 transitions. [2021-11-02 14:14:51,067 INFO L78 Accepts]: Start accepts. Automaton has 2462 states and 3082 transitions. Word has length 166 [2021-11-02 14:14:51,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:14:51,067 INFO L470 AbstractCegarLoop]: Abstraction has 2462 states and 3082 transitions. [2021-11-02 14:14:51,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.76923076923077) internal successors, (166), 13 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:14:51,067 INFO L276 IsEmpty]: Start isEmpty. Operand 2462 states and 3082 transitions. [2021-11-02 14:14:51,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-02 14:14:51,072 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:14:51,072 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:14:51,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-02 14:14:51,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:14:51,285 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-02 14:14:51,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:14:51,285 INFO L85 PathProgramCache]: Analyzing trace with hash -230088662, now seen corresponding path program 1 times [2021-11-02 14:14:51,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:14:51,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306180568] [2021-11-02 14:14:51,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:14:51,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:14:51,338 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:14:51,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [791863986] [2021-11-02 14:14:51,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:14:51,338 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:14:51,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:14:51,339 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) [2021-11-02 14:14:51,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-02 14:14:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:14:52,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 3432 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-02 14:14:52,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:14:53,791 INFO L388 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 32 treesize of output 24 [2021-11-02 14:14:53,799 INFO L388 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 [2021-11-02 14:14:54,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:14:54,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:14:54,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:14:54,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306180568] [2021-11-02 14:14:54,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:14:54,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791863986] [2021-11-02 14:14:54,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791863986] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:14:54,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:14:54,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 14:14:54,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169625816] [2021-11-02 14:14:54,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 14:14:54,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:14:54,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 14:14:54,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-02 14:14:54,196 INFO L87 Difference]: Start difference. First operand 2462 states and 3082 transitions. Second operand has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:14:57,187 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.99s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15