./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_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_push_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 d8b9169d0d63d8238da177db4999afabb0efa6e97e1e7cd257e8474f76788f17 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 13:55:38,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 13:55:38,248 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 13:55:38,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 13:55:38,277 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 13:55:38,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 13:55:38,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 13:55:38,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 13:55:38,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 13:55:38,283 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 13:55:38,284 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 13:55:38,285 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 13:55:38,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 13:55:38,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 13:55:38,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 13:55:38,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 13:55:38,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 13:55:38,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 13:55:38,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 13:55:38,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 13:55:38,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 13:55:38,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 13:55:38,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 13:55:38,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 13:55:38,299 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 13:55:38,299 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 13:55:38,299 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 13:55:38,300 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 13:55:38,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 13:55:38,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 13:55:38,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 13:55:38,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 13:55:38,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 13:55:38,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 13:55:38,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 13:55:38,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 13:55:38,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 13:55:38,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 13:55:38,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 13:55:38,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 13:55:38,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 13:55:38,308 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 13:55:38,327 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 13:55:38,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 13:55:38,327 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 13:55:38,328 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 13:55:38,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 13:55:38,329 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 13:55:38,329 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 13:55:38,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 13:55:38,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 13:55:38,330 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 13:55:38,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 13:55:38,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 13:55:38,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 13:55:38,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 13:55:38,331 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 13:55:38,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 13:55:38,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 13:55:38,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 13:55:38,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 13:55:38,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 13:55:38,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 13:55:38,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 13:55:38,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 13:55:38,333 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 13:55:38,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 13:55:38,333 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 13:55:38,333 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 13:55:38,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 13:55:38,334 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 13:55:38,334 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8b9169d0d63d8238da177db4999afabb0efa6e97e1e7cd257e8474f76788f17 [2021-11-02 13:55:38,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 13:55:38,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 13:55:38,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 13:55:38,596 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 13:55:38,599 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 13:55:38,601 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i [2021-11-02 13:55:38,668 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/261b8eccc/947800de8ef84c1e8fa2eba32deb5c8b/FLAGaea6098f3 [2021-11-02 13:55:39,304 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 13:55:39,305 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i [2021-11-02 13:55:39,356 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/261b8eccc/947800de8ef84c1e8fa2eba32deb5c8b/FLAGaea6098f3 [2021-11-02 13:55:39,495 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/261b8eccc/947800de8ef84c1e8fa2eba32deb5c8b [2021-11-02 13:55:39,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 13:55:39,502 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 13:55:39,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 13:55:39,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 13:55:39,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 13:55:39,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 01:55:39" (1/1) ... [2021-11-02 13:55:39,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50a3613e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:55:39, skipping insertion in model container [2021-11-02 13:55:39,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 01:55:39" (1/1) ... [2021-11-02 13:55:39,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 13:55:39,618 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 13:55:39,914 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_push_harness.i[4497,4510] [2021-11-02 13:55:39,924 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_push_harness.i[4557,4570] [2021-11-02 13:55:39,953 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 13:55:39,963 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 13:55:40,748 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:40,748 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:40,749 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:40,750 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:40,750 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:40,761 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:40,762 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:40,766 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:40,768 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:40,774 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:40,775 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:40,776 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:40,776 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,028 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 13:55:41,029 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 13:55:41,030 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 13:55:41,031 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 13:55:41,032 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 13:55:41,032 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 13:55:41,033 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 13:55:41,033 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 13:55:41,034 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 13:55:41,034 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 13:55:41,139 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 13:55:41,160 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,166 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,240 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,241 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,242 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,242 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,242 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,243 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,278 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,278 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,279 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,279 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,280 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,280 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,280 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,285 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,299 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,300 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,300 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,308 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,309 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,318 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,319 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,320 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 13:55:41,400 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 13:55:41,423 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_push_harness.i[4497,4510] [2021-11-02 13:55:41,424 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_push_harness.i[4557,4570] [2021-11-02 13:55:41,427 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 13:55:41,428 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 13:55:41,473 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,473 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,473 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,474 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,474 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,479 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,479 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,480 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,483 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,484 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,484 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,484 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,485 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,514 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 13:55:41,515 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 13:55:41,516 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 13:55:41,516 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 13:55:41,517 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 13:55:41,517 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 13:55:41,518 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 13:55:41,518 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 13:55:41,518 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 13:55:41,519 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 13:55:41,544 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 13:55:41,553 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,558 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,582 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,583 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,583 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,583 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,584 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,585 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,585 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,585 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,585 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,586 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,586 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,587 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,587 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,588 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,589 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,589 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,590 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,595 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,595 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,599 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,600 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,601 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:55:41,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 13:55:41,862 INFO L208 MainTranslator]: Completed translation [2021-11-02 13:55:41,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:55:41 WrapperNode [2021-11-02 13:55:41,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 13:55:41,864 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 13:55:41,864 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 13:55:41,864 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 13:55:41,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:55:41" (1/1) ... [2021-11-02 13:55:41,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:55:41" (1/1) ... [2021-11-02 13:55:42,296 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 13:55:42,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 13:55:42,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 13:55:42,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 13:55:42,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:55:41" (1/1) ... [2021-11-02 13:55:42,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:55:41" (1/1) ... [2021-11-02 13:55:42,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:55:41" (1/1) ... [2021-11-02 13:55:42,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:55:41" (1/1) ... [2021-11-02 13:55:42,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:55:41" (1/1) ... [2021-11-02 13:55:42,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:55:41" (1/1) ... [2021-11-02 13:55:42,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:55:41" (1/1) ... [2021-11-02 13:55:42,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 13:55:42,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 13:55:42,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 13:55:42,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 13:55:42,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:55:41" (1/1) ... [2021-11-02 13:55:42,965 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 13:55:42,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:55:43,048 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 13:55:43,067 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 13:55:43,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 13:55:43,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 13:55:43,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 13:55:43,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 13:55:43,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 13:55:43,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 13:55:43,094 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-02 13:55:43,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 13:55:43,094 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-02 13:55:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 13:55:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 13:55:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 13:55:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 13:55:49,565 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 13:55:49,566 INFO L299 CfgBuilder]: Removed 1945 assume(true) statements. [2021-11-02 13:55:49,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 01:55:49 BoogieIcfgContainer [2021-11-02 13:55:49,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 13:55:49,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 13:55:49,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 13:55:49,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 13:55:49,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 01:55:39" (1/3) ... [2021-11-02 13:55:49,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a2d21a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 01:55:49, skipping insertion in model container [2021-11-02 13:55:49,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:55:41" (2/3) ... [2021-11-02 13:55:49,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a2d21a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 01:55:49, skipping insertion in model container [2021-11-02 13:55:49,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 01:55:49" (3/3) ... [2021-11-02 13:55:49,586 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_push_harness.i [2021-11-02 13:55:49,591 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 13:55:49,592 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 64 error locations. [2021-11-02 13:55:49,650 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 13:55:49,656 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 13:55:49,656 INFO L340 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2021-11-02 13:55:49,704 INFO L276 IsEmpty]: Start isEmpty. Operand has 2417 states, 2352 states have (on average 1.4136904761904763) internal successors, (3325), 2416 states have internal predecessors, (3325), 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 13:55:49,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-02 13:55:49,718 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:55:49,719 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] [2021-11-02 13:55:49,719 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-02 13:55:49,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:55:49,725 INFO L85 PathProgramCache]: Analyzing trace with hash -938316165, now seen corresponding path program 1 times [2021-11-02 13:55:49,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:55:49,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188888834] [2021-11-02 13:55:49,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:55:49,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:55:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:55:50,388 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 13:55:50,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:55:50,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188888834] [2021-11-02 13:55:50,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188888834] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:55:50,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:55:50,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 13:55:50,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642901707] [2021-11-02 13:55:50,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 13:55:50,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:55:50,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 13:55:50,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 13:55:50,437 INFO L87 Difference]: Start difference. First operand has 2417 states, 2352 states have (on average 1.4136904761904763) internal successors, (3325), 2416 states have internal predecessors, (3325), 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 34.0) internal successors, (68), 2 states have internal predecessors, (68), 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 13:55:52,520 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:56:05,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:56:05,719 INFO L93 Difference]: Finished difference Result 4828 states and 6643 transitions. [2021-11-02 13:56:05,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 13:56:05,721 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 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 68 [2021-11-02 13:56:05,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:56:05,751 INFO L225 Difference]: With dead ends: 4828 [2021-11-02 13:56:05,801 INFO L226 Difference]: Without dead ends: 2412 [2021-11-02 13:56:05,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 13:56:05,817 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3123 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13541.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.51ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3123 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14804.72ms IncrementalHoareTripleChecker+Time [2021-11-02 13:56:05,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 3124 Unknown, 0 Unchecked, 35.51ms Time], IncrementalHoareTripleChecker [0 Valid, 3123 Invalid, 1 Unknown, 0 Unchecked, 14804.72ms Time] [2021-11-02 13:56:05,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2021-11-02 13:56:05,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 2412. [2021-11-02 13:56:05,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 2348 states have (on average 1.3283645655877343) internal successors, (3119), 2411 states have internal predecessors, (3119), 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 13:56:05,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 3119 transitions. [2021-11-02 13:56:05,962 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 3119 transitions. Word has length 68 [2021-11-02 13:56:05,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:56:05,963 INFO L470 AbstractCegarLoop]: Abstraction has 2412 states and 3119 transitions. [2021-11-02 13:56:05,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 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 13:56:05,963 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 3119 transitions. [2021-11-02 13:56:05,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-02 13:56:05,972 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:56:05,972 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] [2021-11-02 13:56:05,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 13:56:05,973 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-02 13:56:05,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:56:05,975 INFO L85 PathProgramCache]: Analyzing trace with hash -438718995, now seen corresponding path program 1 times [2021-11-02 13:56:05,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:56:05,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407276730] [2021-11-02 13:56:05,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:56:05,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:56:06,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:56:06,408 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 13:56:06,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:56:06,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407276730] [2021-11-02 13:56:06,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407276730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:56:06,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:56:06,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:56:06,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474769476] [2021-11-02 13:56:06,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:56:06,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:56:06,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:56:06,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:56:06,411 INFO L87 Difference]: Start difference. First operand 2412 states and 3119 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 13:56:08,476 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 13:56:30,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:56:30,712 INFO L93 Difference]: Finished difference Result 4744 states and 6133 transitions. [2021-11-02 13:56:30,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 13:56:30,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 68 [2021-11-02 13:56:30,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:56:30,724 INFO L225 Difference]: With dead ends: 4744 [2021-11-02 13:56:30,725 INFO L226 Difference]: Without dead ends: 2412 [2021-11-02 13:56:30,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 117.34ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:56:30,731 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3313 mSDsluCounter, 2858 mSDsCounter, 0 mSdLazyCounter, 6010 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22074.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3313 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 81.10ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 6010 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23758.39ms IncrementalHoareTripleChecker+Time [2021-11-02 13:56:30,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3313 Valid, 0 Invalid, 6016 Unknown, 0 Unchecked, 81.10ms Time], IncrementalHoareTripleChecker [5 Valid, 6010 Invalid, 1 Unknown, 0 Unchecked, 23758.39ms Time] [2021-11-02 13:56:30,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2021-11-02 13:56:30,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 2412. [2021-11-02 13:56:30,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 2348 states have (on average 1.3270868824531517) internal successors, (3116), 2411 states have internal predecessors, (3116), 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 13:56:30,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 3116 transitions. [2021-11-02 13:56:30,801 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 3116 transitions. Word has length 68 [2021-11-02 13:56:30,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:56:30,802 INFO L470 AbstractCegarLoop]: Abstraction has 2412 states and 3116 transitions. [2021-11-02 13:56:30,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 13:56:30,802 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 3116 transitions. [2021-11-02 13:56:30,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 13:56:30,803 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:56:30,804 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] [2021-11-02 13:56:30,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 13:56:30,804 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-02 13:56:30,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:56:30,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1398884469, now seen corresponding path program 1 times [2021-11-02 13:56:30,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:56:30,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127904071] [2021-11-02 13:56:30,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:56:30,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:56:30,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:56:31,299 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 13:56:31,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:56:31,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127904071] [2021-11-02 13:56:31,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127904071] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:56:31,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:56:31,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 13:56:31,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521197739] [2021-11-02 13:56:31,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 13:56:31,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:56:31,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 13:56:31,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:56:31,302 INFO L87 Difference]: Start difference. First operand 2412 states and 3116 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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 13:56:33,360 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 13:57:07,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:57:07,038 INFO L93 Difference]: Finished difference Result 6605 states and 8475 transitions. [2021-11-02 13:57:07,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:57:07,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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 76 [2021-11-02 13:57:07,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:57:07,058 INFO L225 Difference]: With dead ends: 6605 [2021-11-02 13:57:07,058 INFO L226 Difference]: Without dead ends: 4241 [2021-11-02 13:57:07,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 159.46ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:57:07,065 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 7896 mSDsluCounter, 5133 mSDsCounter, 0 mSdLazyCounter, 9050 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32135.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7896 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 111.84ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 9050 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34959.87ms IncrementalHoareTripleChecker+Time [2021-11-02 13:57:07,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7896 Valid, 0 Invalid, 9071 Unknown, 0 Unchecked, 111.84ms Time], IncrementalHoareTripleChecker [20 Valid, 9050 Invalid, 1 Unknown, 0 Unchecked, 34959.87ms Time] [2021-11-02 13:57:07,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4241 states. [2021-11-02 13:57:07,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4241 to 2412. [2021-11-02 13:57:07,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 2348 states have (on average 1.325809199318569) internal successors, (3113), 2411 states have internal predecessors, (3113), 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 13:57:07,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 3113 transitions. [2021-11-02 13:57:07,147 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 3113 transitions. Word has length 76 [2021-11-02 13:57:07,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:57:07,148 INFO L470 AbstractCegarLoop]: Abstraction has 2412 states and 3113 transitions. [2021-11-02 13:57:07,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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 13:57:07,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 3113 transitions. [2021-11-02 13:57:07,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-02 13:57:07,150 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:57:07,150 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] [2021-11-02 13:57:07,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 13:57:07,150 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-02 13:57:07,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:57:07,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1863320387, now seen corresponding path program 1 times [2021-11-02 13:57:07,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:57:07,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941478494] [2021-11-02 13:57:07,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:57:07,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:57:07,267 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:57:07,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1947028330] [2021-11-02 13:57:07,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:57:07,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:57:07,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:57:07,275 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 13:57:07,305 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 13:57:08,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:57:08,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 2770 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 13:57:08,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:57:08,840 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 13:57:08,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:57:08,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:57:08,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941478494] [2021-11-02 13:57:08,841 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:57:08,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947028330] [2021-11-02 13:57:08,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947028330] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:57:08,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:57:08,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 13:57:08,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396910546] [2021-11-02 13:57:08,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 13:57:08,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:57:08,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 13:57:08,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:57:08,843 INFO L87 Difference]: Start difference. First operand 2412 states and 3113 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 5 states have internal predecessors, (92), 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 13:57:10,900 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 13:57:45,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:57:45,809 INFO L93 Difference]: Finished difference Result 6681 states and 8583 transitions. [2021-11-02 13:57:45,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 13:57:45,809 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 5 states have internal predecessors, (92), 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 92 [2021-11-02 13:57:45,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:57:45,828 INFO L225 Difference]: With dead ends: 6681 [2021-11-02 13:57:45,828 INFO L226 Difference]: Without dead ends: 4348 [2021-11-02 13:57:45,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 268.76ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-02 13:57:45,836 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 13970 mSDsluCounter, 5467 mSDsCounter, 0 mSdLazyCounter, 8916 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32884.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13970 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 143.78ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 8916 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36022.39ms IncrementalHoareTripleChecker+Time [2021-11-02 13:57:45,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13970 Valid, 0 Invalid, 8937 Unknown, 0 Unchecked, 143.78ms Time], IncrementalHoareTripleChecker [20 Valid, 8916 Invalid, 1 Unknown, 0 Unchecked, 36022.39ms Time] [2021-11-02 13:57:45,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4348 states. [2021-11-02 13:57:45,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4348 to 2412. [2021-11-02 13:57:45,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 2348 states have (on average 1.3245315161839863) internal successors, (3110), 2411 states have internal predecessors, (3110), 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 13:57:45,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 3110 transitions. [2021-11-02 13:57:45,941 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 3110 transitions. Word has length 92 [2021-11-02 13:57:45,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:57:45,941 INFO L470 AbstractCegarLoop]: Abstraction has 2412 states and 3110 transitions. [2021-11-02 13:57:45,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 5 states have internal predecessors, (92), 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 13:57:45,942 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 3110 transitions. [2021-11-02 13:57:45,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-02 13:57:45,943 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:57:45,943 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] [2021-11-02 13:57:45,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 13:57:46,171 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 13:57:46,172 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-02 13:57:46,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:57:46,172 INFO L85 PathProgramCache]: Analyzing trace with hash 2019865383, now seen corresponding path program 1 times [2021-11-02 13:57:46,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:57:46,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425488535] [2021-11-02 13:57:46,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:57:46,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:57:46,357 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:57:46,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1621899917] [2021-11-02 13:57:46,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:57:46,358 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:57:46,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:57:46,360 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 13:57:46,364 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 13:57:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:57:47,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 2875 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 13:57:47,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:57:48,090 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 13:57:48,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:57:48,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:57:48,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425488535] [2021-11-02 13:57:48,091 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:57:48,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621899917] [2021-11-02 13:57:48,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621899917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:57:48,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:57:48,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 13:57:48,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869411927] [2021-11-02 13:57:48,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:57:48,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:57:48,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:57:48,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:57:48,094 INFO L87 Difference]: Start difference. First operand 2412 states and 3110 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 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 13:57:50,315 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:58:37,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:58:37,357 INFO L93 Difference]: Finished difference Result 6697 states and 8601 transitions. [2021-11-02 13:58:37,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 13:58:37,358 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 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 116 [2021-11-02 13:58:37,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:58:37,372 INFO L225 Difference]: With dead ends: 6697 [2021-11-02 13:58:37,373 INFO L226 Difference]: Without dead ends: 4348 [2021-11-02 13:58:37,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 477.91ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-02 13:58:37,379 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 14168 mSDsluCounter, 7614 mSDsCounter, 0 mSdLazyCounter, 11808 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43947.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14168 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 181.77ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 11808 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48058.57ms IncrementalHoareTripleChecker+Time [2021-11-02 13:58:37,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14168 Valid, 0 Invalid, 11855 Unknown, 0 Unchecked, 181.77ms Time], IncrementalHoareTripleChecker [46 Valid, 11808 Invalid, 1 Unknown, 0 Unchecked, 48058.57ms Time] [2021-11-02 13:58:37,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4348 states. [2021-11-02 13:58:37,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4348 to 2412. [2021-11-02 13:58:37,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 2348 states have (on average 1.3232538330494037) internal successors, (3107), 2411 states have internal predecessors, (3107), 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 13:58:37,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 3107 transitions. [2021-11-02 13:58:37,481 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 3107 transitions. Word has length 116 [2021-11-02 13:58:37,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:58:37,482 INFO L470 AbstractCegarLoop]: Abstraction has 2412 states and 3107 transitions. [2021-11-02 13:58:37,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 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 13:58:37,483 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 3107 transitions. [2021-11-02 13:58:37,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-02 13:58:37,484 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:58:37,484 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] [2021-11-02 13:58:37,520 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 13:58:37,707 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 13:58:37,708 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-02 13:58:37,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:58:37,708 INFO L85 PathProgramCache]: Analyzing trace with hash 584501871, now seen corresponding path program 1 times [2021-11-02 13:58:37,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:58:37,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793219434] [2021-11-02 13:58:37,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:58:37,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:58:37,823 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:58:37,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1582471739] [2021-11-02 13:58:37,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:58:37,824 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:58:37,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:58:37,826 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 13:58:37,829 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 13:58:38,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:58:38,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 3065 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 13:58:38,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:58:39,777 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 13:58:39,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:58:39,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:58:39,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793219434] [2021-11-02 13:58:39,777 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:58:39,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582471739] [2021-11-02 13:58:39,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582471739] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:58:39,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:58:39,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 13:58:39,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167759061] [2021-11-02 13:58:39,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 13:58:39,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:58:39,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 13:58:39,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:58:39,780 INFO L87 Difference]: Start difference. First operand 2412 states and 3107 transitions. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 5 states have internal predecessors, (132), 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 13:58:42,147 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:59:01,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:59:01,859 INFO L93 Difference]: Finished difference Result 4631 states and 5963 transitions. [2021-11-02 13:59:01,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 13:59:01,860 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 5 states have internal predecessors, (132), 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 132 [2021-11-02 13:59:01,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:59:01,869 INFO L225 Difference]: With dead ends: 4631 [2021-11-02 13:59:01,869 INFO L226 Difference]: Without dead ends: 2412 [2021-11-02 13:59:01,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 258.98ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-02 13:59:01,875 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 10907 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 4498 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19131.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10907 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 82.41ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 4498 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21470.25ms IncrementalHoareTripleChecker+Time [2021-11-02 13:59:01,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10907 Valid, 0 Invalid, 4512 Unknown, 0 Unchecked, 82.41ms Time], IncrementalHoareTripleChecker [13 Valid, 4498 Invalid, 1 Unknown, 0 Unchecked, 21470.25ms Time] [2021-11-02 13:59:01,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2021-11-02 13:59:01,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 2412. [2021-11-02 13:59:01,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 2348 states have (on average 1.3224020442930153) internal successors, (3105), 2411 states have internal predecessors, (3105), 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 13:59:01,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 3105 transitions. [2021-11-02 13:59:01,965 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 3105 transitions. Word has length 132 [2021-11-02 13:59:01,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:59:01,966 INFO L470 AbstractCegarLoop]: Abstraction has 2412 states and 3105 transitions. [2021-11-02 13:59:01,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 5 states have internal predecessors, (132), 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 13:59:01,966 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 3105 transitions. [2021-11-02 13:59:01,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-02 13:59:01,967 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:59:01,968 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] [2021-11-02 13:59:02,000 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 13:59:02,179 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 13:59:02,180 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-02 13:59:02,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:59:02,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1488405602, now seen corresponding path program 1 times [2021-11-02 13:59:02,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:59:02,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784546303] [2021-11-02 13:59:02,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:59:02,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:59:02,279 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:59:02,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [679878971] [2021-11-02 13:59:02,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:59:02,280 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:59:02,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:59:02,281 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 13:59:02,303 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 13:59:03,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:59:03,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 3096 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-02 13:59:03,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:59:04,388 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 13:59:04,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:59:04,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:59:04,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784546303] [2021-11-02 13:59:04,389 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:59:04,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679878971] [2021-11-02 13:59:04,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679878971] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:59:04,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:59:04,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 13:59:04,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508275278] [2021-11-02 13:59:04,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 13:59:04,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:59:04,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 13:59:04,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:59:04,391 INFO L87 Difference]: Start difference. First operand 2412 states and 3105 transitions. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 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 13:59:06,435 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 13:59:36,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:59:36,647 INFO L93 Difference]: Finished difference Result 5310 states and 6806 transitions. [2021-11-02 13:59:36,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 13:59:36,647 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 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 136 [2021-11-02 13:59:36,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:59:36,656 INFO L225 Difference]: With dead ends: 5310 [2021-11-02 13:59:36,656 INFO L226 Difference]: Without dead ends: 3059 [2021-11-02 13:59:36,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 295.15ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-02 13:59:36,660 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 10296 mSDsluCounter, 3624 mSDsCounter, 0 mSdLazyCounter, 7494 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28273.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10296 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 102.01ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 7494 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31461.29ms IncrementalHoareTripleChecker+Time [2021-11-02 13:59:36,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10296 Valid, 0 Invalid, 7527 Unknown, 0 Unchecked, 102.01ms Time], IncrementalHoareTripleChecker [32 Valid, 7494 Invalid, 1 Unknown, 0 Unchecked, 31461.29ms Time] [2021-11-02 13:59:36,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3059 states. [2021-11-02 13:59:36,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3059 to 2412. [2021-11-02 13:59:36,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 2348 states have (on average 1.321550255536627) internal successors, (3103), 2411 states have internal predecessors, (3103), 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 13:59:36,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 3103 transitions. [2021-11-02 13:59:36,758 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 3103 transitions. Word has length 136 [2021-11-02 13:59:36,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:59:36,758 INFO L470 AbstractCegarLoop]: Abstraction has 2412 states and 3103 transitions. [2021-11-02 13:59:36,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 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 13:59:36,759 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 3103 transitions. [2021-11-02 13:59:36,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-02 13:59:36,760 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:59:36,761 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] [2021-11-02 13:59:36,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-02 13:59:36,971 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 13:59:36,972 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-02 13:59:36,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:59:36,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1661426758, now seen corresponding path program 1 times [2021-11-02 13:59:36,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:59:36,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504491890] [2021-11-02 13:59:36,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:59:36,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:59:37,095 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:59:37,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1082958710] [2021-11-02 13:59:37,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:59:37,096 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:59:37,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:59:37,097 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 13:59:37,103 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 13:59:37,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:59:37,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 3191 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-02 13:59:37,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:59:39,213 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 13:59:39,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:59:39,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:59:39,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504491890] [2021-11-02 13:59:39,214 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:59:39,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082958710] [2021-11-02 13:59:39,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082958710] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:59:39,214 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:59:39,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 13:59:39,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358681013] [2021-11-02 13:59:39,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:59:39,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:59:39,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:59:39,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:59:39,215 INFO L87 Difference]: Start difference. First operand 2412 states and 3103 transitions. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 6 states have internal predecessors, (144), 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 13:59:41,261 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 14:00:08,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:00:08,045 INFO L93 Difference]: Finished difference Result 5338 states and 6845 transitions. [2021-11-02 14:00:08,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 14:00:08,046 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 6 states have internal predecessors, (144), 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 144 [2021-11-02 14:00:08,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:00:08,057 INFO L225 Difference]: With dead ends: 5338 [2021-11-02 14:00:08,057 INFO L226 Difference]: Without dead ends: 3118 [2021-11-02 14:00:08,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 473.55ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-02 14:00:08,061 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 16266 mSDsluCounter, 2447 mSDsCounter, 0 mSdLazyCounter, 5748 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24534.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16266 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 119.63ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 5748 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27853.95ms IncrementalHoareTripleChecker+Time [2021-11-02 14:00:08,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16266 Valid, 0 Invalid, 5786 Unknown, 0 Unchecked, 119.63ms Time], IncrementalHoareTripleChecker [37 Valid, 5748 Invalid, 1 Unknown, 0 Unchecked, 27853.95ms Time] [2021-11-02 14:00:08,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3118 states. [2021-11-02 14:00:08,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3118 to 2412. [2021-11-02 14:00:08,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 2348 states have (on average 1.3206984667802386) internal successors, (3101), 2411 states have internal predecessors, (3101), 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 14:00:08,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 3101 transitions. [2021-11-02 14:00:08,165 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 3101 transitions. Word has length 144 [2021-11-02 14:00:08,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:00:08,166 INFO L470 AbstractCegarLoop]: Abstraction has 2412 states and 3101 transitions. [2021-11-02 14:00:08,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 6 states have internal predecessors, (144), 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 14:00:08,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 3101 transitions. [2021-11-02 14:00:08,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-02 14:00:08,169 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:00:08,169 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] [2021-11-02 14:00:08,212 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 14:00:08,395 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 14:00:08,396 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-02 14:00:08,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:00:08,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1690290133, now seen corresponding path program 1 times [2021-11-02 14:00:08,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:00:08,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785985020] [2021-11-02 14:00:08,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:00:08,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:00:08,497 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:00:08,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1216453958] [2021-11-02 14:00:08,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:00:08,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:00:08,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:00:08,499 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 14:00:08,504 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 14:00:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:00:09,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 3243 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 14:00:09,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:00:09,825 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 14:00:09,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:00:09,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:00:09,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785985020] [2021-11-02 14:00:09,826 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:00:09,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216453958] [2021-11-02 14:00:09,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216453958] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:00:09,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:00:09,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 14:00:09,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757100039] [2021-11-02 14:00:09,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 14:00:09,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:00:09,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 14:00:09,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 14:00:09,828 INFO L87 Difference]: Start difference. First operand 2412 states and 3101 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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 14:00:11,874 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 14:00:47,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:00:47,598 INFO L93 Difference]: Finished difference Result 4805 states and 6179 transitions. [2021-11-02 14:00:47,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 14:00:47,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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 156 [2021-11-02 14:00:47,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:00:47,606 INFO L225 Difference]: With dead ends: 4805 [2021-11-02 14:00:47,606 INFO L226 Difference]: Without dead ends: 2460 [2021-11-02 14:00:47,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.58ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:00:47,610 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 26 mSDsluCounter, 6068 mSDsCounter, 0 mSdLazyCounter, 9350 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33594.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 87.37ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 9350 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37276.98ms IncrementalHoareTripleChecker+Time [2021-11-02 14:00:47,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 0 Invalid, 9396 Unknown, 0 Unchecked, 87.37ms Time], IncrementalHoareTripleChecker [45 Valid, 9350 Invalid, 1 Unknown, 0 Unchecked, 37276.98ms Time] [2021-11-02 14:00:47,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2021-11-02 14:00:47,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 2436. [2021-11-02 14:00:47,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2436 states, 2372 states have (on average 1.3174536256323777) internal successors, (3125), 2435 states have internal predecessors, (3125), 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 14:00:47,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2436 states to 2436 states and 3125 transitions. [2021-11-02 14:00:47,697 INFO L78 Accepts]: Start accepts. Automaton has 2436 states and 3125 transitions. Word has length 156 [2021-11-02 14:00:47,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:00:47,698 INFO L470 AbstractCegarLoop]: Abstraction has 2436 states and 3125 transitions. [2021-11-02 14:00:47,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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 14:00:47,698 INFO L276 IsEmpty]: Start isEmpty. Operand 2436 states and 3125 transitions. [2021-11-02 14:00:47,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-02 14:00:47,700 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:00:47,700 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] [2021-11-02 14:00:47,739 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 14:00:47,927 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 14:00:47,928 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-02 14:00:47,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:00:47,928 INFO L85 PathProgramCache]: Analyzing trace with hash -2084656919, now seen corresponding path program 1 times [2021-11-02 14:00:47,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:00:47,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419010542] [2021-11-02 14:00:47,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:00:47,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:00:48,023 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:00:48,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1140522584] [2021-11-02 14:00:48,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:00:48,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:00:48,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:00:48,025 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 14:00:48,027 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 14:00:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:00:48,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 3238 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-02 14:00:48,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:00:50,216 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 14:00:50,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:00:50,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:00:50,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419010542] [2021-11-02 14:00:50,216 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:00:50,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140522584] [2021-11-02 14:00:50,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140522584] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:00:50,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:00:50,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 14:00:50,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020611437] [2021-11-02 14:00:50,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 14:00:50,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:00:50,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 14:00:50,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-02 14:00:50,219 INFO L87 Difference]: Start difference. First operand 2436 states and 3125 transitions. Second operand has 8 states, 8 states have (on average 19.5) internal successors, (156), 7 states have internal predecessors, (156), 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 14:00:52,269 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 14:01:29,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:01:29,179 INFO L93 Difference]: Finished difference Result 5398 states and 6909 transitions. [2021-11-02 14:01:29,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 14:01:29,179 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 7 states have internal predecessors, (156), 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 156 [2021-11-02 14:01:29,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:01:29,187 INFO L225 Difference]: With dead ends: 5398 [2021-11-02 14:01:29,187 INFO L226 Difference]: Without dead ends: 3142 [2021-11-02 14:01:29,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 738.84ms TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2021-11-02 14:01:29,192 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 16567 mSDsluCounter, 4474 mSDsCounter, 0 mSdLazyCounter, 8499 mSolverCounterSat, 89 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33755.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16567 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 161.67ms SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 8499 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37743.27ms IncrementalHoareTripleChecker+Time [2021-11-02 14:01:29,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16567 Valid, 0 Invalid, 8589 Unknown, 0 Unchecked, 161.67ms Time], IncrementalHoareTripleChecker [89 Valid, 8499 Invalid, 1 Unknown, 0 Unchecked, 37743.27ms Time] [2021-11-02 14:01:29,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3142 states. [2021-11-02 14:01:29,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3142 to 2436. [2021-11-02 14:01:29,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2436 states, 2372 states have (on average 1.316610455311973) internal successors, (3123), 2435 states have internal predecessors, (3123), 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 14:01:29,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2436 states to 2436 states and 3123 transitions. [2021-11-02 14:01:29,295 INFO L78 Accepts]: Start accepts. Automaton has 2436 states and 3123 transitions. Word has length 156 [2021-11-02 14:01:29,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:01:29,296 INFO L470 AbstractCegarLoop]: Abstraction has 2436 states and 3123 transitions. [2021-11-02 14:01:29,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 7 states have internal predecessors, (156), 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 14:01:29,297 INFO L276 IsEmpty]: Start isEmpty. Operand 2436 states and 3123 transitions. [2021-11-02 14:01:29,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-02 14:01:29,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:01:29,299 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] [2021-11-02 14:01:29,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-02 14:01:29,515 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 14:01:29,516 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-02 14:01:29,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:01:29,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1933015475, now seen corresponding path program 1 times [2021-11-02 14:01:29,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:01:29,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757552463] [2021-11-02 14:01:29,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:01:29,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:01:29,651 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:01:29,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [516542599] [2021-11-02 14:01:29,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:01:29,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:01:29,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:01:29,658 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 14:01:29,659 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 14:01:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:01:30,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 3333 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-02 14:01:30,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:01:31,972 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 14:01:31,972 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:01:31,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:01:31,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757552463] [2021-11-02 14:01:31,973 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:01:31,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516542599] [2021-11-02 14:01:31,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516542599] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:01:31,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:01:31,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 14:01:31,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905946023] [2021-11-02 14:01:31,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 14:01:31,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:01:31,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 14:01:31,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 14:01:31,979 INFO L87 Difference]: Start difference. First operand 2436 states and 3123 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 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 14:01:34,671 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:02:02,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:02:02,449 INFO L93 Difference]: Finished difference Result 4653 states and 5967 transitions. [2021-11-02 14:02:02,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 14:02:02,450 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 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 164 [2021-11-02 14:02:02,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:02:02,456 INFO L225 Difference]: With dead ends: 4653 [2021-11-02 14:02:02,456 INFO L226 Difference]: Without dead ends: 2436 [2021-11-02 14:02:02,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 326.03ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-02 14:02:02,461 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 12016 mSDsluCounter, 2519 mSDsCounter, 0 mSdLazyCounter, 6409 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26350.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12016 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 120.84ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6409 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29764.44ms IncrementalHoareTripleChecker+Time [2021-11-02 14:02:02,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12016 Valid, 0 Invalid, 6414 Unknown, 0 Unchecked, 120.84ms Time], IncrementalHoareTripleChecker [4 Valid, 6409 Invalid, 1 Unknown, 0 Unchecked, 29764.44ms Time] [2021-11-02 14:02:02,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2436 states. [2021-11-02 14:02:02,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2436 to 2436. [2021-11-02 14:02:02,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2436 states, 2372 states have (on average 1.315345699831366) internal successors, (3120), 2435 states have internal predecessors, (3120), 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 14:02:02,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2436 states to 2436 states and 3120 transitions. [2021-11-02 14:02:02,553 INFO L78 Accepts]: Start accepts. Automaton has 2436 states and 3120 transitions. Word has length 164 [2021-11-02 14:02:02,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:02:02,554 INFO L470 AbstractCegarLoop]: Abstraction has 2436 states and 3120 transitions. [2021-11-02 14:02:02,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 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 14:02:02,554 INFO L276 IsEmpty]: Start isEmpty. Operand 2436 states and 3120 transitions. [2021-11-02 14:02:02,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-02 14:02:02,556 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:02:02,556 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, 1, 1] [2021-11-02 14:02:02,599 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 14:02:02,779 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 14:02:02,780 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-02 14:02:02,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:02:02,780 INFO L85 PathProgramCache]: Analyzing trace with hash -977522511, now seen corresponding path program 1 times [2021-11-02 14:02:02,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:02:02,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601332232] [2021-11-02 14:02:02,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:02:02,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:02:02,875 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:02:02,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1231525598] [2021-11-02 14:02:02,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:02:02,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:02:02,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:02:02,877 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 14:02:02,878 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 14:02:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:02:03,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 3428 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-02 14:02:03,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:02:05,347 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 14:02:05,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:02:05,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:02:05,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601332232] [2021-11-02 14:02:05,348 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:02:05,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231525598] [2021-11-02 14:02:05,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231525598] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:02:05,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:02:05,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 14:02:05,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498490176] [2021-11-02 14:02:05,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 14:02:05,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:02:05,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 14:02:05,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-02 14:02:05,350 INFO L87 Difference]: Start difference. First operand 2436 states and 3120 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 14:02:08,132 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.78s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:02:42,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:02:42,727 INFO L93 Difference]: Finished difference Result 5041 states and 6467 transitions. [2021-11-02 14:02:42,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 14:02:42,728 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 172 [2021-11-02 14:02:42,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:02:42,733 INFO L225 Difference]: With dead ends: 5041 [2021-11-02 14:02:42,733 INFO L226 Difference]: Without dead ends: 2848 [2021-11-02 14:02:42,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 476.65ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-11-02 14:02:42,736 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 15716 mSDsluCounter, 4532 mSDsCounter, 0 mSdLazyCounter, 8390 mSolverCounterSat, 91 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32477.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15716 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 132.64ms SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 8390 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36484.31ms IncrementalHoareTripleChecker+Time [2021-11-02 14:02:42,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15716 Valid, 0 Invalid, 8482 Unknown, 0 Unchecked, 132.64ms Time], IncrementalHoareTripleChecker [91 Valid, 8390 Invalid, 1 Unknown, 0 Unchecked, 36484.31ms Time] [2021-11-02 14:02:42,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2848 states. [2021-11-02 14:02:42,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2848 to 2436. [2021-11-02 14:02:42,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2436 states, 2372 states have (on average 1.3115514333895446) internal successors, (3111), 2435 states have internal predecessors, (3111), 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 14:02:42,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2436 states to 2436 states and 3111 transitions. [2021-11-02 14:02:42,816 INFO L78 Accepts]: Start accepts. Automaton has 2436 states and 3111 transitions. Word has length 172 [2021-11-02 14:02:42,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:02:42,817 INFO L470 AbstractCegarLoop]: Abstraction has 2436 states and 3111 transitions. [2021-11-02 14:02:42,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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 14:02:42,817 INFO L276 IsEmpty]: Start isEmpty. Operand 2436 states and 3111 transitions. [2021-11-02 14:02:42,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-02 14:02:42,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:02:42,819 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:02:42,854 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 14:02:43,041 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 14:02:43,042 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-02 14:02:43,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:02:43,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1683999865, now seen corresponding path program 1 times [2021-11-02 14:02:43,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:02:43,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373593824] [2021-11-02 14:02:43,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:02:43,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:02:43,135 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:02:43,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1302342601] [2021-11-02 14:02:43,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:02:43,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:02:43,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:02:43,137 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 14:02:43,140 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 14:02:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:02:44,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 3618 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 14:02:44,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:02:45,131 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 14:02:45,131 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:02:45,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:02:45,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373593824] [2021-11-02 14:02:45,132 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:02:45,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302342601] [2021-11-02 14:02:45,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302342601] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:02:45,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:02:45,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 14:02:45,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585970365] [2021-11-02 14:02:45,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 14:02:45,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:02:45,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 14:02:45,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 14:02:45,133 INFO L87 Difference]: Start difference. First operand 2436 states and 3111 transitions. Second operand has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 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 14:02:47,929 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.79s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:04:36,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:04:36,692 INFO L93 Difference]: Finished difference Result 6863 states and 8749 transitions. [2021-11-02 14:04:36,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 14:04:36,694 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 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 188 [2021-11-02 14:04:36,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:04:36,703 INFO L225 Difference]: With dead ends: 6863 [2021-11-02 14:04:36,703 INFO L226 Difference]: Without dead ends: 4498 [2021-11-02 14:04:36,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 493.03ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-02 14:04:36,709 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2527 mSDsluCounter, 15739 mSDsCounter, 0 mSdLazyCounter, 25215 mSolverCounterSat, 91 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 95771.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2527 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 25307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 220.93ms SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 25215 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 110165.51ms IncrementalHoareTripleChecker+Time [2021-11-02 14:04:36,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2527 Valid, 0 Invalid, 25307 Unknown, 0 Unchecked, 220.93ms Time], IncrementalHoareTripleChecker [91 Valid, 25215 Invalid, 1 Unknown, 0 Unchecked, 110165.51ms Time] [2021-11-02 14:04:36,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4498 states. [2021-11-02 14:04:36,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4498 to 2460. [2021-11-02 14:04:36,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2460 states, 2396 states have (on average 1.3084307178631052) internal successors, (3135), 2459 states have internal predecessors, (3135), 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 14:04:36,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2460 states to 2460 states and 3135 transitions. [2021-11-02 14:04:36,830 INFO L78 Accepts]: Start accepts. Automaton has 2460 states and 3135 transitions. Word has length 188 [2021-11-02 14:04:36,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:04:36,830 INFO L470 AbstractCegarLoop]: Abstraction has 2460 states and 3135 transitions. [2021-11-02 14:04:36,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 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 14:04:36,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2460 states and 3135 transitions. [2021-11-02 14:04:36,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-02 14:04:36,833 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:04:36,833 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:04:36,873 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 14:04:37,047 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 14:04:37,048 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-02 14:04:37,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:04:37,048 INFO L85 PathProgramCache]: Analyzing trace with hash -222403401, now seen corresponding path program 1 times [2021-11-02 14:04:37,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:04:37,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127065149] [2021-11-02 14:04:37,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:04:37,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:04:37,145 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:04:37,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [856329298] [2021-11-02 14:04:37,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:04:37,146 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:04:37,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:04:37,147 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 14:04:37,148 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 14:04:38,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:04:38,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 3615 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 14:04:38,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:04:38,766 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 14:04:38,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:04:38,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:04:38,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127065149] [2021-11-02 14:04:38,767 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:04:38,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856329298] [2021-11-02 14:04:38,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856329298] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:04:38,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:04:38,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 14:04:38,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698918957] [2021-11-02 14:04:38,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 14:04:38,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:04:38,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 14:04:38,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 14:04:38,769 INFO L87 Difference]: Start difference. First operand 2460 states and 3135 transitions. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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 14:04:40,817 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 14:05:18,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:05:18,700 INFO L93 Difference]: Finished difference Result 4893 states and 6237 transitions. [2021-11-02 14:05:18,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 14:05:18,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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 188 [2021-11-02 14:05:18,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:05:18,707 INFO L225 Difference]: With dead ends: 4893 [2021-11-02 14:05:18,707 INFO L226 Difference]: Without dead ends: 2508 [2021-11-02 14:05:18,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.16ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:05:18,713 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 32 mSDsluCounter, 6040 mSDsCounter, 0 mSdLazyCounter, 9266 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34441.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 64.41ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 9266 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39446.66ms IncrementalHoareTripleChecker+Time [2021-11-02 14:05:18,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 0 Invalid, 9312 Unknown, 0 Unchecked, 64.41ms Time], IncrementalHoareTripleChecker [45 Valid, 9266 Invalid, 1 Unknown, 0 Unchecked, 39446.66ms Time] [2021-11-02 14:05:18,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2508 states. [2021-11-02 14:05:18,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2508 to 2484. [2021-11-02 14:05:18,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2484 states, 2420 states have (on average 1.3053719008264464) internal successors, (3159), 2483 states have internal predecessors, (3159), 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 14:05:18,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 3159 transitions. [2021-11-02 14:05:18,854 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 3159 transitions. Word has length 188 [2021-11-02 14:05:18,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:05:18,855 INFO L470 AbstractCegarLoop]: Abstraction has 2484 states and 3159 transitions. [2021-11-02 14:05:18,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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 14:05:18,855 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 3159 transitions. [2021-11-02 14:05:18,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-02 14:05:18,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:05:18,858 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:05:18,900 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 14:05:19,079 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 14:05:19,080 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-02 14:05:19,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:05:19,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1279134603, now seen corresponding path program 1 times [2021-11-02 14:05:19,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:05:19,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881536891] [2021-11-02 14:05:19,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:05:19,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:05:19,168 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:05:19,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1194492600] [2021-11-02 14:05:19,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:05:19,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:05:19,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:05:19,170 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 14:05:19,175 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 14:05:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:05:20,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 3610 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-02 14:05:20,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:05:21,479 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 14:05:21,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:05:21,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:05:21,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881536891] [2021-11-02 14:05:21,480 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:05:21,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194492600] [2021-11-02 14:05:21,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194492600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:05:21,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:05:21,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 14:05:21,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412350738] [2021-11-02 14:05:21,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 14:05:21,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:05:21,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 14:05:21,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 14:05:21,481 INFO L87 Difference]: Start difference. First operand 2484 states and 3159 transitions. Second operand has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 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 14:05:23,526 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 14:06:29,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:06:29,884 INFO L93 Difference]: Finished difference Result 7202 states and 9165 transitions. [2021-11-02 14:06:29,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 14:06:29,885 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 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 188 [2021-11-02 14:06:29,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:06:29,895 INFO L225 Difference]: With dead ends: 7202 [2021-11-02 14:06:29,895 INFO L226 Difference]: Without dead ends: 4874 [2021-11-02 14:06:29,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 441.55ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-02 14:06:29,901 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5911 mSDsluCounter, 12314 mSDsCounter, 0 mSdLazyCounter, 15429 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57914.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5911 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 15435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 185.63ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15429 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67186.11ms IncrementalHoareTripleChecker+Time [2021-11-02 14:06:29,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5911 Valid, 0 Invalid, 15435 Unknown, 0 Unchecked, 185.63ms Time], IncrementalHoareTripleChecker [5 Valid, 15429 Invalid, 1 Unknown, 0 Unchecked, 67186.11ms Time] [2021-11-02 14:06:29,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4874 states. [2021-11-02 14:06:30,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4874 to 2543. [2021-11-02 14:06:30,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2543 states, 2479 states have (on average 1.3041549011698266) internal successors, (3233), 2542 states have internal predecessors, (3233), 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 14:06:30,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2543 states to 2543 states and 3233 transitions. [2021-11-02 14:06:30,030 INFO L78 Accepts]: Start accepts. Automaton has 2543 states and 3233 transitions. Word has length 188 [2021-11-02 14:06:30,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:06:30,031 INFO L470 AbstractCegarLoop]: Abstraction has 2543 states and 3233 transitions. [2021-11-02 14:06:30,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 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 14:06:30,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2543 states and 3233 transitions. [2021-11-02 14:06:30,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-02 14:06:30,037 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:06:30,037 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:06:30,076 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 14:06:30,251 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 14:06:30,252 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-02 14:06:30,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:06:30,252 INFO L85 PathProgramCache]: Analyzing trace with hash 2021138995, now seen corresponding path program 1 times [2021-11-02 14:06:30,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:06:30,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047225087] [2021-11-02 14:06:30,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:06:30,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:06:30,348 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:06:30,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [961776079] [2021-11-02 14:06:30,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:06:30,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:06:30,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:06:30,350 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 14:06:30,351 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 14:06:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:06:31,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 3607 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-02 14:06:31,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:06:32,501 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 14:06:32,501 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:06:32,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:06:32,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047225087] [2021-11-02 14:06:32,502 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:06:32,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961776079] [2021-11-02 14:06:32,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961776079] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:06:32,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:06:32,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 14:06:32,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172656162] [2021-11-02 14:06:32,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 14:06:32,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:06:32,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 14:06:32,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 14:06:32,503 INFO L87 Difference]: Start difference. First operand 2543 states and 3233 transitions. Second operand has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 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 14:06:35,835 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:07:44,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:07:44,014 INFO L93 Difference]: Finished difference Result 7143 states and 9089 transitions. [2021-11-02 14:07:44,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 14:07:44,014 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 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 188 [2021-11-02 14:07:44,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:07:44,020 INFO L225 Difference]: With dead ends: 7143 [2021-11-02 14:07:44,020 INFO L226 Difference]: Without dead ends: 4874 [2021-11-02 14:07:44,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 398.73ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-02 14:07:44,024 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5773 mSDsluCounter, 12314 mSDsCounter, 0 mSdLazyCounter, 15429 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59395.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5773 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 15435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 178.05ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15429 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70299.55ms IncrementalHoareTripleChecker+Time [2021-11-02 14:07:44,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5773 Valid, 0 Invalid, 15435 Unknown, 0 Unchecked, 178.05ms Time], IncrementalHoareTripleChecker [5 Valid, 15429 Invalid, 1 Unknown, 0 Unchecked, 70299.55ms Time] [2021-11-02 14:07:44,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4874 states. [2021-11-02 14:07:44,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4874 to 2602. [2021-11-02 14:07:44,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2602 states, 2538 states have (on average 1.3029944838455476) internal successors, (3307), 2601 states have internal predecessors, (3307), 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 14:07:44,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2602 states to 2602 states and 3307 transitions. [2021-11-02 14:07:44,127 INFO L78 Accepts]: Start accepts. Automaton has 2602 states and 3307 transitions. Word has length 188 [2021-11-02 14:07:44,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:07:44,127 INFO L470 AbstractCegarLoop]: Abstraction has 2602 states and 3307 transitions. [2021-11-02 14:07:44,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 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 14:07:44,128 INFO L276 IsEmpty]: Start isEmpty. Operand 2602 states and 3307 transitions. [2021-11-02 14:07:44,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-02 14:07:44,129 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:07:44,130 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:07:44,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-11-02 14:07:44,355 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 14:07:44,356 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-02 14:07:44,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:07:44,356 INFO L85 PathProgramCache]: Analyzing trace with hash -334666255, now seen corresponding path program 1 times [2021-11-02 14:07:44,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:07:44,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484088602] [2021-11-02 14:07:44,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:07:44,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:07:44,451 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:07:44,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1129149554] [2021-11-02 14:07:44,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:07:44,452 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:07:44,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:07:44,453 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 14:07:44,455 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 14:07:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:07:45,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 3604 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-02 14:07:45,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:07:46,150 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 14:07:46,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:07:46,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:07:46,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484088602] [2021-11-02 14:07:46,150 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:07:46,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129149554] [2021-11-02 14:07:46,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129149554] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:07:46,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:07:46,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 14:07:46,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251827299] [2021-11-02 14:07:46,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 14:07:46,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:07:46,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 14:07:46,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 14:07:46,153 INFO L87 Difference]: Start difference. First operand 2602 states and 3307 transitions. Second operand has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 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 14:07:49,336 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:09:03,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:09:03,202 INFO L93 Difference]: Finished difference Result 7123 states and 9063 transitions. [2021-11-02 14:09:03,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 14:09:03,203 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 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 188 [2021-11-02 14:09:03,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:09:03,208 INFO L225 Difference]: With dead ends: 7123 [2021-11-02 14:09:03,209 INFO L226 Difference]: Without dead ends: 4874 [2021-11-02 14:09:03,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 382.15ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-02 14:09:03,212 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5661 mSDsluCounter, 12314 mSDsCounter, 0 mSdLazyCounter, 15429 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63222.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5661 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 15433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 187.32ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15429 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75813.85ms IncrementalHoareTripleChecker+Time [2021-11-02 14:09:03,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5661 Valid, 0 Invalid, 15433 Unknown, 0 Unchecked, 187.32ms Time], IncrementalHoareTripleChecker [3 Valid, 15429 Invalid, 1 Unknown, 0 Unchecked, 75813.85ms Time] [2021-11-02 14:09:03,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4874 states. [2021-11-02 14:09:03,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4874 to 2622. [2021-11-02 14:09:03,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2622 states, 2558 states have (on average 1.302189210320563) internal successors, (3331), 2621 states have internal predecessors, (3331), 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 14:09:03,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2622 states to 2622 states and 3331 transitions. [2021-11-02 14:09:03,357 INFO L78 Accepts]: Start accepts. Automaton has 2622 states and 3331 transitions. Word has length 188 [2021-11-02 14:09:03,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:09:03,357 INFO L470 AbstractCegarLoop]: Abstraction has 2622 states and 3331 transitions. [2021-11-02 14:09:03,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 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 14:09:03,358 INFO L276 IsEmpty]: Start isEmpty. Operand 2622 states and 3331 transitions. [2021-11-02 14:09:03,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-02 14:09:03,359 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:09:03,359 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:09:03,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-11-02 14:09:03,583 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 14:09:03,584 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-02 14:09:03,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:09:03,584 INFO L85 PathProgramCache]: Analyzing trace with hash -59906641, now seen corresponding path program 1 times [2021-11-02 14:09:03,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:09:03,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266747257] [2021-11-02 14:09:03,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:09:03,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:09:03,664 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:09:03,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1000416460] [2021-11-02 14:09:03,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:09:03,665 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:09:03,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:09:03,666 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 14:09:03,668 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 14:09:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:09:04,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 3601 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-02 14:09:04,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:09:05,378 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 14:09:05,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:09:05,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:09:05,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266747257] [2021-11-02 14:09:05,379 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:09:05,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000416460] [2021-11-02 14:09:05,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000416460] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:09:05,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:09:05,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 14:09:05,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064013089] [2021-11-02 14:09:05,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 14:09:05,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:09:05,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 14:09:05,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 14:09:05,380 INFO L87 Difference]: Start difference. First operand 2622 states and 3331 transitions. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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 14:09:08,709 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15