./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 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_pop_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 71774aeec0d0f8840a1b18b633767b26c38c9eb9d26569d28cdf01c44c9881ac --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 13:51:55,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 13:51:55,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 13:51:55,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 13:51:55,040 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 13:51:55,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 13:51:55,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 13:51:55,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 13:51:55,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 13:51:55,050 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 13:51:55,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 13:51:55,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 13:51:55,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 13:51:55,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 13:51:55,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 13:51:55,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 13:51:55,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 13:51:55,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 13:51:55,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 13:51:55,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 13:51:55,071 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 13:51:55,072 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 13:51:55,073 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 13:51:55,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 13:51:55,078 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 13:51:55,078 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 13:51:55,079 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 13:51:55,080 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 13:51:55,080 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 13:51:55,081 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 13:51:55,081 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 13:51:55,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 13:51:55,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 13:51:55,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 13:51:55,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 13:51:55,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 13:51:55,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 13:51:55,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 13:51:55,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 13:51:55,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 13:51:55,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 13:51:55,088 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 13:51:55,105 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 13:51:55,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 13:51:55,106 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 13:51:55,106 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 13:51:55,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 13:51:55,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 13:51:55,107 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 13:51:55,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 13:51:55,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 13:51:55,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 13:51:55,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 13:51:55,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 13:51:55,108 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 13:51:55,108 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 13:51:55,108 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 13:51:55,108 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 13:51:55,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 13:51:55,109 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 13:51:55,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 13:51:55,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 13:51:55,109 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 13:51:55,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 13:51:55,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 13:51:55,110 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 13:51:55,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 13:51:55,110 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 13:51:55,110 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 13:51:55,110 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 13:51:55,110 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 13:51:55,110 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71774aeec0d0f8840a1b18b633767b26c38c9eb9d26569d28cdf01c44c9881ac [2021-11-02 13:51:55,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 13:51:55,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 13:51:55,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 13:51:55,332 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 13:51:55,332 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 13:51:55,333 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i [2021-11-02 13:51:55,385 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0595fb5f7/bda34f9cebbf43928221bf399b155072/FLAGfa532b7bc [2021-11-02 13:51:55,894 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 13:51:55,894 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i [2021-11-02 13:51:55,925 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0595fb5f7/bda34f9cebbf43928221bf399b155072/FLAGfa532b7bc [2021-11-02 13:51:56,115 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0595fb5f7/bda34f9cebbf43928221bf399b155072 [2021-11-02 13:51:56,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 13:51:56,117 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 13:51:56,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 13:51:56,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 13:51:56,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 13:51:56,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 01:51:56" (1/1) ... [2021-11-02 13:51:56,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5212bcf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:51:56, skipping insertion in model container [2021-11-02 13:51:56,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 01:51:56" (1/1) ... [2021-11-02 13:51:56,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 13:51:56,199 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 13:51:56,382 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_pop_harness.i[4496,4509] [2021-11-02 13:51:56,388 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_pop_harness.i[4556,4569] [2021-11-02 13:51:56,411 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 13:51:56,422 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 13:51:56,899 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:56,899 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:56,900 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:56,900 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:56,901 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:56,915 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:56,916 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:56,916 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:56,917 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:56,918 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:56,919 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:56,926 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:56,927 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,131 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 13:51:57,132 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 13:51:57,133 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 13:51:57,134 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 13:51:57,135 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 13:51:57,135 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 13:51:57,136 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 13:51:57,136 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 13:51:57,136 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 13:51:57,137 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 13:51:57,235 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 13:51:57,279 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,290 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,332 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,333 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,333 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,351 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,351 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,351 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,352 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,353 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,353 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,353 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,353 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,354 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,354 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,356 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,357 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,357 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,357 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,359 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,360 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,378 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,378 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,378 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 13:51:57,435 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 13:51:57,451 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_pop_harness.i[4496,4509] [2021-11-02 13:51:57,451 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_pop_harness.i[4556,4569] [2021-11-02 13:51:57,452 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 13:51:57,453 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 13:51:57,471 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,473 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,474 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,474 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,474 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,480 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,480 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,481 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,481 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,481 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,482 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,482 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,482 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,515 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 13:51:57,515 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 13:51:57,516 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 13:51:57,516 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 13:51:57,517 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 13:51:57,517 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 13:51:57,518 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 13:51:57,518 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 13:51:57,518 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 13:51:57,519 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 13:51:57,545 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 13:51:57,552 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,554 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,565 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,565 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,565 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,565 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,566 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,566 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,566 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,567 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,567 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,567 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,567 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,567 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,567 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,569 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,569 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,569 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,570 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,571 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,571 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,575 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,575 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,576 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:57,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 13:51:57,761 INFO L208 MainTranslator]: Completed translation [2021-11-02 13:51:57,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:51:57 WrapperNode [2021-11-02 13:51:57,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 13:51:57,763 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 13:51:57,763 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 13:51:57,763 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 13:51:57,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:51:57" (1/1) ... [2021-11-02 13:51:57,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:51:57" (1/1) ... [2021-11-02 13:51:58,139 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 13:51:58,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 13:51:58,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 13:51:58,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 13:51:58,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:51:57" (1/1) ... [2021-11-02 13:51:58,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:51:57" (1/1) ... [2021-11-02 13:51:58,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:51:57" (1/1) ... [2021-11-02 13:51:58,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:51:57" (1/1) ... [2021-11-02 13:51:58,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:51:57" (1/1) ... [2021-11-02 13:51:58,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:51:57" (1/1) ... [2021-11-02 13:51:58,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:51:57" (1/1) ... [2021-11-02 13:51:58,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 13:51:58,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 13:51:58,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 13:51:58,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 13:51:58,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:51:57" (1/1) ... [2021-11-02 13:51:58,654 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 13:51:58,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:51:58,713 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 13:51:58,796 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 13:51:58,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 13:51:58,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 13:51:58,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 13:51:58,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 13:51:58,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 13:51:58,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 13:51:58,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 13:51:58,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 13:51:58,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 13:51:58,823 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-02 13:51:58,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 13:51:58,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 13:51:58,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 13:51:58,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 13:52:04,121 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 13:52:04,122 INFO L299 CfgBuilder]: Removed 2646 assume(true) statements. [2021-11-02 13:52:04,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 01:52:04 BoogieIcfgContainer [2021-11-02 13:52:04,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 13:52:04,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 13:52:04,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 13:52:04,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 13:52:04,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 01:51:56" (1/3) ... [2021-11-02 13:52:04,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49127efa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 01:52:04, skipping insertion in model container [2021-11-02 13:52:04,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:51:57" (2/3) ... [2021-11-02 13:52:04,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49127efa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 01:52:04, skipping insertion in model container [2021-11-02 13:52:04,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 01:52:04" (3/3) ... [2021-11-02 13:52:04,140 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_pop_harness.i [2021-11-02 13:52:04,145 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 13:52:04,145 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 87 error locations. [2021-11-02 13:52:04,206 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 13:52:04,214 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 13:52:04,215 INFO L340 AbstractCegarLoop]: Starting to check reachability of 87 error locations. [2021-11-02 13:52:04,269 INFO L276 IsEmpty]: Start isEmpty. Operand has 3341 states, 3253 states have (on average 1.4223793421457116) internal successors, (4627), 3340 states have internal predecessors, (4627), 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 13:52:04,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-02 13:52:04,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:52:04,281 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] [2021-11-02 13:52:04,282 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-02 13:52:04,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:52:04,286 INFO L85 PathProgramCache]: Analyzing trace with hash 462763660, now seen corresponding path program 1 times [2021-11-02 13:52:04,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:52:04,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867144738] [2021-11-02 13:52:04,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:52:04,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:52:04,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:52:04,838 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 13:52:04,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:52:04,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867144738] [2021-11-02 13:52:04,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867144738] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:52:04,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:52:04,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 13:52:04,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84178849] [2021-11-02 13:52:04,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 13:52:04,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:52:04,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 13:52:04,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 13:52:04,869 INFO L87 Difference]: Start difference. First operand has 3341 states, 3253 states have (on average 1.4223793421457116) internal successors, (4627), 3340 states have internal predecessors, (4627), 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 27.5) internal successors, (55), 2 states have internal predecessors, (55), 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 13:52:06,939 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:52:09,500 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:52:24,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:52:24,319 INFO L93 Difference]: Finished difference Result 6676 states and 9247 transitions. [2021-11-02 13:52:24,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 13:52:24,321 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 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 55 [2021-11-02 13:52:24,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:52:24,351 INFO L225 Difference]: With dead ends: 6676 [2021-11-02 13:52:24,351 INFO L226 Difference]: Without dead ends: 3336 [2021-11-02 13:52:24,362 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 13:52:24,364 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4316 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17516.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.47ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4316 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18914.21ms IncrementalHoareTripleChecker+Time [2021-11-02 13:52:24,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 4318 Unknown, 0 Unchecked, 36.47ms Time], IncrementalHoareTripleChecker [0 Valid, 4316 Invalid, 2 Unknown, 0 Unchecked, 18914.21ms Time] [2021-11-02 13:52:24,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3336 states. [2021-11-02 13:52:24,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3336 to 3336. [2021-11-02 13:52:24,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3336 states, 3249 states have (on average 1.327485380116959) internal successors, (4313), 3335 states have internal predecessors, (4313), 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 13:52:24,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3336 states to 3336 states and 4313 transitions. [2021-11-02 13:52:24,488 INFO L78 Accepts]: Start accepts. Automaton has 3336 states and 4313 transitions. Word has length 55 [2021-11-02 13:52:24,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:52:24,489 INFO L470 AbstractCegarLoop]: Abstraction has 3336 states and 4313 transitions. [2021-11-02 13:52:24,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 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 13:52:24,489 INFO L276 IsEmpty]: Start isEmpty. Operand 3336 states and 4313 transitions. [2021-11-02 13:52:24,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-02 13:52:24,496 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:52:24,496 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] [2021-11-02 13:52:24,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 13:52:24,497 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-02 13:52:24,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:52:24,497 INFO L85 PathProgramCache]: Analyzing trace with hash -349284918, now seen corresponding path program 1 times [2021-11-02 13:52:24,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:52:24,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656807976] [2021-11-02 13:52:24,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:52:24,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:52:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:52:24,803 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 13:52:24,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:52:24,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656807976] [2021-11-02 13:52:24,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656807976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:52:24,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:52:24,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:52:24,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200029210] [2021-11-02 13:52:24,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:52:24,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:52:24,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:52:24,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:52:24,806 INFO L87 Difference]: Start difference. First operand 3336 states and 4313 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 13:52:26,851 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:52:29,230 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:52:56,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:52:56,945 INFO L93 Difference]: Finished difference Result 6604 states and 8535 transitions. [2021-11-02 13:52:56,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 13:52:56,946 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 55 [2021-11-02 13:52:56,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:52:56,963 INFO L225 Difference]: With dead ends: 6604 [2021-11-02 13:52:56,964 INFO L226 Difference]: Without dead ends: 3348 [2021-11-02 13:52:56,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 13:52:56,976 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4613 mSDsluCounter, 3941 mSDsCounter, 0 mSdLazyCounter, 8318 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29344.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4613 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 95.04ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 8318 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31508.66ms IncrementalHoareTripleChecker+Time [2021-11-02 13:52:56,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4613 Valid, 0 Invalid, 8326 Unknown, 0 Unchecked, 95.04ms Time], IncrementalHoareTripleChecker [7 Valid, 8318 Invalid, 1 Unknown, 0 Unchecked, 31508.66ms Time] [2021-11-02 13:52:56,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3348 states. [2021-11-02 13:52:57,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3348 to 3336. [2021-11-02 13:52:57,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3336 states, 3249 states have (on average 1.3265620190827947) internal successors, (4310), 3335 states have internal predecessors, (4310), 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 13:52:57,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3336 states to 3336 states and 4310 transitions. [2021-11-02 13:52:57,045 INFO L78 Accepts]: Start accepts. Automaton has 3336 states and 4310 transitions. Word has length 55 [2021-11-02 13:52:57,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:52:57,046 INFO L470 AbstractCegarLoop]: Abstraction has 3336 states and 4310 transitions. [2021-11-02 13:52:57,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 13:52:57,047 INFO L276 IsEmpty]: Start isEmpty. Operand 3336 states and 4310 transitions. [2021-11-02 13:52:57,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-02 13:52:57,050 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:52:57,051 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] [2021-11-02 13:52:57,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 13:52:57,051 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-02 13:52:57,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:52:57,052 INFO L85 PathProgramCache]: Analyzing trace with hash -44069140, now seen corresponding path program 1 times [2021-11-02 13:52:57,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:52:57,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768289095] [2021-11-02 13:52:57,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:52:57,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:52:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:52:57,372 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 13:52:57,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:52:57,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768289095] [2021-11-02 13:52:57,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768289095] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:52:57,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:52:57,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 13:52:57,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96967425] [2021-11-02 13:52:57,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 13:52:57,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:52:57,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 13:52:57,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:52:57,373 INFO L87 Difference]: Start difference. First operand 3336 states and 4310 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 13:52:59,415 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 13:53:44,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:53:44,100 INFO L93 Difference]: Finished difference Result 9015 states and 11551 transitions. [2021-11-02 13:53:44,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:53:44,101 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 63 [2021-11-02 13:53:44,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:53:44,118 INFO L225 Difference]: With dead ends: 9015 [2021-11-02 13:53:44,119 INFO L226 Difference]: Without dead ends: 5727 [2021-11-02 13:53:44,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 134.70ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:53:44,125 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 10540 mSDsluCounter, 7093 mSDsCounter, 0 mSdLazyCounter, 12545 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41741.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10540 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 157.40ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 12545 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45670.73ms IncrementalHoareTripleChecker+Time [2021-11-02 13:53:44,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10540 Valid, 0 Invalid, 12573 Unknown, 0 Unchecked, 157.40ms Time], IncrementalHoareTripleChecker [27 Valid, 12545 Invalid, 1 Unknown, 0 Unchecked, 45670.73ms Time] [2021-11-02 13:53:44,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5727 states. [2021-11-02 13:53:44,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5727 to 3336. [2021-11-02 13:53:44,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3336 states, 3249 states have (on average 1.3256386580486303) internal successors, (4307), 3335 states have internal predecessors, (4307), 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 13:53:44,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3336 states to 3336 states and 4307 transitions. [2021-11-02 13:53:44,217 INFO L78 Accepts]: Start accepts. Automaton has 3336 states and 4307 transitions. Word has length 63 [2021-11-02 13:53:44,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:53:44,217 INFO L470 AbstractCegarLoop]: Abstraction has 3336 states and 4307 transitions. [2021-11-02 13:53:44,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 13:53:44,217 INFO L276 IsEmpty]: Start isEmpty. Operand 3336 states and 4307 transitions. [2021-11-02 13:53:44,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-02 13:53:44,219 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:53:44,219 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] [2021-11-02 13:53:44,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 13:53:44,219 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-02 13:53:44,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:53:44,220 INFO L85 PathProgramCache]: Analyzing trace with hash 170313652, now seen corresponding path program 1 times [2021-11-02 13:53:44,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:53:44,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081353451] [2021-11-02 13:53:44,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:53:44,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:53:44,321 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:53:44,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [949515923] [2021-11-02 13:53:44,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:53:44,322 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:53:44,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:53:44,323 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 13:53:44,326 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 13:53:45,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:53:45,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 2705 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 13:53:45,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:53:45,746 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 13:53:45,746 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:53:45,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:53:45,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081353451] [2021-11-02 13:53:45,746 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:53:45,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949515923] [2021-11-02 13:53:45,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949515923] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:53:45,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:53:45,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 13:53:45,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130507971] [2021-11-02 13:53:45,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 13:53:45,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:53:45,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 13:53:45,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:53:45,748 INFO L87 Difference]: Start difference. First operand 3336 states and 4307 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 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 13:53:47,786 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 13:53:50,128 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:54:31,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:54:31,332 INFO L93 Difference]: Finished difference Result 9185 states and 11791 transitions. [2021-11-02 13:54:31,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 13:54:31,333 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 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 79 [2021-11-02 13:54:31,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:54:31,349 INFO L225 Difference]: With dead ends: 9185 [2021-11-02 13:54:31,349 INFO L226 Difference]: Without dead ends: 5928 [2021-11-02 13:54:31,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 262.03ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-02 13:54:31,358 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 18984 mSDsluCounter, 7542 mSDsCounter, 0 mSdLazyCounter, 12338 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40647.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18984 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 187.70ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 12338 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44388.15ms IncrementalHoareTripleChecker+Time [2021-11-02 13:54:31,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18984 Valid, 0 Invalid, 12360 Unknown, 0 Unchecked, 187.70ms Time], IncrementalHoareTripleChecker [21 Valid, 12338 Invalid, 1 Unknown, 0 Unchecked, 44388.15ms Time] [2021-11-02 13:54:31,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5928 states. [2021-11-02 13:54:31,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5928 to 3336. [2021-11-02 13:54:31,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3336 states, 3249 states have (on average 1.324715297014466) internal successors, (4304), 3335 states have internal predecessors, (4304), 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 13:54:31,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3336 states to 3336 states and 4304 transitions. [2021-11-02 13:54:31,445 INFO L78 Accepts]: Start accepts. Automaton has 3336 states and 4304 transitions. Word has length 79 [2021-11-02 13:54:31,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:54:31,446 INFO L470 AbstractCegarLoop]: Abstraction has 3336 states and 4304 transitions. [2021-11-02 13:54:31,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 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 13:54:31,447 INFO L276 IsEmpty]: Start isEmpty. Operand 3336 states and 4304 transitions. [2021-11-02 13:54:31,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-02 13:54:31,448 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:54:31,448 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] [2021-11-02 13:54:31,474 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 13:54:31,667 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 13:54:31,667 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-02 13:54:31,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:54:31,668 INFO L85 PathProgramCache]: Analyzing trace with hash -561881262, now seen corresponding path program 1 times [2021-11-02 13:54:31,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:54:31,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304888910] [2021-11-02 13:54:31,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:54:31,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:54:31,746 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:54:31,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [999008418] [2021-11-02 13:54:31,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:54:31,747 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:54:31,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:54:31,748 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 13:54:31,750 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 13:54:32,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:54:32,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 2805 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 13:54:32,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:54:33,096 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 13:54:33,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:54:33,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:54:33,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304888910] [2021-11-02 13:54:33,096 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:54:33,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999008418] [2021-11-02 13:54:33,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999008418] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:54:33,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:54:33,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 13:54:33,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919432921] [2021-11-02 13:54:33,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:54:33,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:54:33,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:54:33,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:54:33,098 INFO L87 Difference]: Start difference. First operand 3336 states and 4304 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 6 states have internal predecessors, (103), 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 13:54:35,141 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 13:55:35,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:55:35,865 INFO L93 Difference]: Finished difference Result 9201 states and 11809 transitions. [2021-11-02 13:55:35,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 13:55:35,865 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 6 states have internal predecessors, (103), 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 103 [2021-11-02 13:55:35,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:55:35,882 INFO L225 Difference]: With dead ends: 9201 [2021-11-02 13:55:35,882 INFO L226 Difference]: Without dead ends: 5928 [2021-11-02 13:55:35,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 345.18ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-02 13:55:35,888 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 19203 mSDsluCounter, 10572 mSDsCounter, 0 mSdLazyCounter, 16397 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55685.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19203 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 16444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 235.42ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 16397 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61343.10ms IncrementalHoareTripleChecker+Time [2021-11-02 13:55:35,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19203 Valid, 0 Invalid, 16444 Unknown, 0 Unchecked, 235.42ms Time], IncrementalHoareTripleChecker [46 Valid, 16397 Invalid, 1 Unknown, 0 Unchecked, 61343.10ms Time] [2021-11-02 13:55:35,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5928 states. [2021-11-02 13:55:35,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5928 to 3336. [2021-11-02 13:55:35,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3336 states, 3249 states have (on average 1.3237919359803016) internal successors, (4301), 3335 states have internal predecessors, (4301), 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 13:55:35,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3336 states to 3336 states and 4301 transitions. [2021-11-02 13:55:35,995 INFO L78 Accepts]: Start accepts. Automaton has 3336 states and 4301 transitions. Word has length 103 [2021-11-02 13:55:35,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:55:35,995 INFO L470 AbstractCegarLoop]: Abstraction has 3336 states and 4301 transitions. [2021-11-02 13:55:35,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 6 states have internal predecessors, (103), 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 13:55:35,996 INFO L276 IsEmpty]: Start isEmpty. Operand 3336 states and 4301 transitions. [2021-11-02 13:55:35,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-02 13:55:35,996 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:55:35,997 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] [2021-11-02 13:55:36,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 13:55:36,211 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 13:55:36,212 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-02 13:55:36,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:55:36,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1200811894, now seen corresponding path program 1 times [2021-11-02 13:55:36,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:55:36,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066616169] [2021-11-02 13:55:36,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:55:36,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:55:36,289 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:55:36,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2066473038] [2021-11-02 13:55:36,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:55:36,290 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:55:36,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:55:36,291 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 13:55:36,295 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 13:55:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:55:37,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 2995 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-02 13:55:37,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:55:38,113 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 13:55:38,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:55:38,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:55:38,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066616169] [2021-11-02 13:55:38,114 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:55:38,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066473038] [2021-11-02 13:55:38,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066473038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:55:38,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:55:38,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 13:55:38,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556396333] [2021-11-02 13:55:38,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 13:55:38,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:55:38,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 13:55:38,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:55:38,116 INFO L87 Difference]: Start difference. First operand 3336 states and 4301 transitions. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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 13:55:40,158 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 13:56:23,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:56:23,410 INFO L93 Difference]: Finished difference Result 6558 states and 8455 transitions. [2021-11-02 13:56:23,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 13:56:23,410 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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 119 [2021-11-02 13:56:23,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:56:23,421 INFO L225 Difference]: With dead ends: 6558 [2021-11-02 13:56:23,421 INFO L226 Difference]: Without dead ends: 3405 [2021-11-02 13:56:23,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 191.14ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-02 13:56:23,426 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 8827 mSDsluCounter, 7377 mSDsCounter, 0 mSdLazyCounter, 12828 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40642.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8827 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 126.88ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12828 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44522.42ms IncrementalHoareTripleChecker+Time [2021-11-02 13:56:23,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8827 Valid, 0 Invalid, 12834 Unknown, 0 Unchecked, 126.88ms Time], IncrementalHoareTripleChecker [5 Valid, 12828 Invalid, 1 Unknown, 0 Unchecked, 44522.42ms Time] [2021-11-02 13:56:23,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3405 states. [2021-11-02 13:56:23,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3405 to 3336. [2021-11-02 13:56:23,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3336 states, 3249 states have (on average 1.3231763619575254) internal successors, (4299), 3335 states have internal predecessors, (4299), 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 13:56:23,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3336 states to 3336 states and 4299 transitions. [2021-11-02 13:56:23,506 INFO L78 Accepts]: Start accepts. Automaton has 3336 states and 4299 transitions. Word has length 119 [2021-11-02 13:56:23,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:56:23,506 INFO L470 AbstractCegarLoop]: Abstraction has 3336 states and 4299 transitions. [2021-11-02 13:56:23,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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 13:56:23,507 INFO L276 IsEmpty]: Start isEmpty. Operand 3336 states and 4299 transitions. [2021-11-02 13:56:23,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-02 13:56:23,508 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:56:23,508 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] [2021-11-02 13:56:23,532 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 13:56:23,714 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 13:56:23,714 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-02 13:56:23,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:56:23,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1513903148, now seen corresponding path program 1 times [2021-11-02 13:56:23,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:56:23,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021545697] [2021-11-02 13:56:23,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:56:23,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:56:23,784 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:56:23,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2108481907] [2021-11-02 13:56:23,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:56:23,784 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:56:23,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:56:23,787 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 13:56:23,789 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 13:56:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:56:24,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 3180 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 13:56:24,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:56:24,862 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 13:56:24,862 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:56:24,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:56:24,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021545697] [2021-11-02 13:56:24,862 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:56:24,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108481907] [2021-11-02 13:56:24,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108481907] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:56:24,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:56:24,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:56:24,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194197846] [2021-11-02 13:56:24,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:56:24,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:56:24,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:56:24,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:56:24,864 INFO L87 Difference]: Start difference. First operand 3336 states and 4299 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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 13:56:26,905 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 13:56:30,155 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:57:15,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:57:15,738 INFO L93 Difference]: Finished difference Result 7285 states and 9465 transitions. [2021-11-02 13:57:15,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:57:15,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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 135 [2021-11-02 13:57:15,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:57:15,749 INFO L225 Difference]: With dead ends: 7285 [2021-11-02 13:57:15,750 INFO L226 Difference]: Without dead ends: 3996 [2021-11-02 13:57:15,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.70ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:57:15,756 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 978 mSDsluCounter, 6748 mSDsCounter, 0 mSdLazyCounter, 13446 mSolverCounterSat, 525 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45260.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 109.82ms SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 13446 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50196.32ms IncrementalHoareTripleChecker+Time [2021-11-02 13:57:15,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [978 Valid, 0 Invalid, 13972 Unknown, 0 Unchecked, 109.82ms Time], IncrementalHoareTripleChecker [525 Valid, 13446 Invalid, 1 Unknown, 0 Unchecked, 50196.32ms Time] [2021-11-02 13:57:15,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3996 states. [2021-11-02 13:57:15,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3996 to 3600. [2021-11-02 13:57:15,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3600 states, 3513 states have (on average 1.2988898377455167) internal successors, (4563), 3599 states have internal predecessors, (4563), 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 13:57:15,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3600 states to 3600 states and 4563 transitions. [2021-11-02 13:57:15,848 INFO L78 Accepts]: Start accepts. Automaton has 3600 states and 4563 transitions. Word has length 135 [2021-11-02 13:57:15,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:57:15,848 INFO L470 AbstractCegarLoop]: Abstraction has 3600 states and 4563 transitions. [2021-11-02 13:57:15,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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 13:57:15,849 INFO L276 IsEmpty]: Start isEmpty. Operand 3600 states and 4563 transitions. [2021-11-02 13:57:15,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-02 13:57:15,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:57:15,850 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] [2021-11-02 13:57:15,877 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 13:57:16,067 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 13:57:16,067 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-02 13:57:16,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:57:16,068 INFO L85 PathProgramCache]: Analyzing trace with hash 175040594, now seen corresponding path program 1 times [2021-11-02 13:57:16,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:57:16,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153680640] [2021-11-02 13:57:16,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:57:16,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:57:16,156 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:57:16,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1413464211] [2021-11-02 13:57:16,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:57:16,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:57:16,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:57:16,158 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 13:57:16,159 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 13:57:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:57:16,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 3185 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-02 13:57:16,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:57:17,482 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 13:57:17,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:57:17,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:57:17,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153680640] [2021-11-02 13:57:17,483 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:57:17,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413464211] [2021-11-02 13:57:17,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413464211] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:57:17,484 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:57:17,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 13:57:17,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133342828] [2021-11-02 13:57:17,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 13:57:17,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:57:17,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 13:57:17,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:57:17,485 INFO L87 Difference]: Start difference. First operand 3600 states and 4563 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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 13:57:19,876 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:59:27,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:59:27,212 INFO L93 Difference]: Finished difference Result 17589 states and 22302 transitions. [2021-11-02 13:59:27,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 13:59:27,213 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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 135 [2021-11-02 13:59:27,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:59:27,239 INFO L225 Difference]: With dead ends: 17589 [2021-11-02 13:59:27,239 INFO L226 Difference]: Without dead ends: 14102 [2021-11-02 13:59:27,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 365.46ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-02 13:59:27,247 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 16694 mSDsluCounter, 25470 mSDsCounter, 0 mSdLazyCounter, 29830 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 109963.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16694 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 29845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 284.17ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 29830 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 127337.36ms IncrementalHoareTripleChecker+Time [2021-11-02 13:59:27,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16694 Valid, 0 Invalid, 29845 Unknown, 0 Unchecked, 284.17ms Time], IncrementalHoareTripleChecker [14 Valid, 29830 Invalid, 1 Unknown, 0 Unchecked, 127337.36ms Time] [2021-11-02 13:59:27,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14102 states. [2021-11-02 13:59:27,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14102 to 3621. [2021-11-02 13:59:27,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3621 states, 3534 states have (on average 1.2985285795132995) internal successors, (4589), 3620 states have internal predecessors, (4589), 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 13:59:27,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3621 states to 3621 states and 4589 transitions. [2021-11-02 13:59:27,384 INFO L78 Accepts]: Start accepts. Automaton has 3621 states and 4589 transitions. Word has length 135 [2021-11-02 13:59:27,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:59:27,384 INFO L470 AbstractCegarLoop]: Abstraction has 3621 states and 4589 transitions. [2021-11-02 13:59:27,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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 13:59:27,385 INFO L276 IsEmpty]: Start isEmpty. Operand 3621 states and 4589 transitions. [2021-11-02 13:59:27,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-02 13:59:27,386 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:59:27,386 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] [2021-11-02 13:59:27,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-02 13:59:27,592 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 13:59:27,593 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-02 13:59:27,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:59:27,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1736001964, now seen corresponding path program 1 times [2021-11-02 13:59:27,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:59:27,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744203308] [2021-11-02 13:59:27,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:59:27,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:59:27,681 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:59:27,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [163717605] [2021-11-02 13:59:27,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:59:27,682 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:59:27,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:59:27,683 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 13:59:27,684 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 13:59:28,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:59:28,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 3182 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-02 13:59:28,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:59:29,356 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 13:59:29,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:59:29,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:59:29,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744203308] [2021-11-02 13:59:29,356 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:59:29,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163717605] [2021-11-02 13:59:29,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163717605] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:59:29,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:59:29,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 13:59:29,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803893386] [2021-11-02 13:59:29,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 13:59:29,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:59:29,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 13:59:29,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:59:29,358 INFO L87 Difference]: Start difference. First operand 3621 states and 4589 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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 13:59:31,507 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:00:52,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:00:52,881 INFO L93 Difference]: Finished difference Result 10541 states and 13363 transitions. [2021-11-02 14:00:52,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 14:00:52,882 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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 135 [2021-11-02 14:00:52,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:00:52,894 INFO L225 Difference]: With dead ends: 10541 [2021-11-02 14:00:52,894 INFO L226 Difference]: Without dead ends: 7111 [2021-11-02 14:00:52,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 343.30ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-02 14:00:52,899 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 8291 mSDsluCounter, 17160 mSDsCounter, 0 mSdLazyCounter, 21489 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71369.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8291 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 21493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 170.57ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21489 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 82177.85ms IncrementalHoareTripleChecker+Time [2021-11-02 14:00:52,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8291 Valid, 0 Invalid, 21493 Unknown, 0 Unchecked, 170.57ms Time], IncrementalHoareTripleChecker [3 Valid, 21489 Invalid, 1 Unknown, 0 Unchecked, 82177.85ms Time] [2021-11-02 14:00:52,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7111 states. [2021-11-02 14:00:53,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7111 to 3678. [2021-11-02 14:00:53,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3678 states, 3591 states have (on average 1.2979671400724033) internal successors, (4661), 3677 states have internal predecessors, (4661), 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 14:00:53,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3678 states to 3678 states and 4661 transitions. [2021-11-02 14:00:53,008 INFO L78 Accepts]: Start accepts. Automaton has 3678 states and 4661 transitions. Word has length 135 [2021-11-02 14:00:53,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:00:53,008 INFO L470 AbstractCegarLoop]: Abstraction has 3678 states and 4661 transitions. [2021-11-02 14:00:53,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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 14:00:53,008 INFO L276 IsEmpty]: Start isEmpty. Operand 3678 states and 4661 transitions. [2021-11-02 14:00:53,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-02 14:00:53,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:00:53,009 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] [2021-11-02 14:00:53,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-02 14:00:53,215 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 14:00:53,216 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-02 14:00:53,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:00:53,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1808388522, now seen corresponding path program 1 times [2021-11-02 14:00:53,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:00:53,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285272334] [2021-11-02 14:00:53,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:00:53,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:00:53,278 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:00:53,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [216830573] [2021-11-02 14:00:53,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:00:53,282 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:00:53,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:00:53,283 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 14:00:53,284 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 14:00:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:00:53,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 3179 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-02 14:00:53,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:00:54,323 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 14:00:54,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:00:54,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:00:54,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285272334] [2021-11-02 14:00:54,324 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:00:54,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216830573] [2021-11-02 14:00:54,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216830573] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:00:54,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:00:54,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 14:00:54,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99736926] [2021-11-02 14:00:54,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 14:00:54,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:00:54,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 14:00:54,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 14:00:54,325 INFO L87 Difference]: Start difference. First operand 3678 states and 4661 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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 14:00:56,363 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 14:01:46,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:01:46,215 INFO L93 Difference]: Finished difference Result 7108 states and 9010 transitions. [2021-11-02 14:01:46,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 14:01:46,215 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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 135 [2021-11-02 14:01:46,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:01:46,222 INFO L225 Difference]: With dead ends: 7108 [2021-11-02 14:01:46,222 INFO L226 Difference]: Without dead ends: 3600 [2021-11-02 14:01:46,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.30ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:01:46,228 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 8230 mSDsCounter, 0 mSdLazyCounter, 12893 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44208.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 66.85ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12893 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51264.27ms IncrementalHoareTripleChecker+Time [2021-11-02 14:01:46,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 12894 Unknown, 0 Unchecked, 66.85ms Time], IncrementalHoareTripleChecker [0 Valid, 12893 Invalid, 1 Unknown, 0 Unchecked, 51264.27ms Time] [2021-11-02 14:01:46,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3600 states. [2021-11-02 14:01:46,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3600 to 3600. [2021-11-02 14:01:46,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3600 states, 3513 states have (on average 1.2983205237688584) internal successors, (4561), 3599 states have internal predecessors, (4561), 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 14:01:46,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3600 states to 3600 states and 4561 transitions. [2021-11-02 14:01:46,323 INFO L78 Accepts]: Start accepts. Automaton has 3600 states and 4561 transitions. Word has length 135 [2021-11-02 14:01:46,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:01:46,324 INFO L470 AbstractCegarLoop]: Abstraction has 3600 states and 4561 transitions. [2021-11-02 14:01:46,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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 14:01:46,324 INFO L276 IsEmpty]: Start isEmpty. Operand 3600 states and 4561 transitions. [2021-11-02 14:01:46,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-02 14:01:46,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:01:46,325 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] [2021-11-02 14:01:46,357 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 14:01:46,528 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 14:01:46,529 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-02 14:01:46,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:01:46,529 INFO L85 PathProgramCache]: Analyzing trace with hash 192259578, now seen corresponding path program 1 times [2021-11-02 14:01:46,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:01:46,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497134253] [2021-11-02 14:01:46,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:01:46,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:01:46,595 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:01:46,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1751418669] [2021-11-02 14:01:46,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:01:46,595 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:01:46,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:01:46,596 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 14:01:46,597 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 14:01:47,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:01:47,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 3207 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-02 14:01:47,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:01:47,810 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 14:01:47,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:01:47,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:01:47,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497134253] [2021-11-02 14:01:47,810 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:01:47,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751418669] [2021-11-02 14:01:47,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751418669] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:01:47,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:01:47,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 14:01:47,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946911389] [2021-11-02 14:01:47,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 14:01:47,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:01:47,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 14:01:47,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:01:47,812 INFO L87 Difference]: Start difference. First operand 3600 states and 4561 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 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 14:01:49,966 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:03:32,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:03:32,707 INFO L93 Difference]: Finished difference Result 10287 states and 12993 transitions. [2021-11-02 14:03:32,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 14:03:32,708 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 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 138 [2021-11-02 14:03:32,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:03:32,721 INFO L225 Difference]: With dead ends: 10287 [2021-11-02 14:03:32,721 INFO L226 Difference]: Without dead ends: 6769 [2021-11-02 14:03:32,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 73.93ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 14:03:32,727 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3826 mSDsluCounter, 19608 mSDsCounter, 0 mSdLazyCounter, 27980 mSolverCounterSat, 91 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87874.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3826 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 28072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 165.71ms SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 27980 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 103710.62ms IncrementalHoareTripleChecker+Time [2021-11-02 14:03:32,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3826 Valid, 0 Invalid, 28072 Unknown, 0 Unchecked, 165.71ms Time], IncrementalHoareTripleChecker [91 Valid, 27980 Invalid, 1 Unknown, 0 Unchecked, 103710.62ms Time] [2021-11-02 14:03:32,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6769 states. [2021-11-02 14:03:32,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6769 to 3714. [2021-11-02 14:03:32,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3714 states, 3627 states have (on average 1.2994210090984284) internal successors, (4713), 3713 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:03:32,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3714 states to 3714 states and 4713 transitions. [2021-11-02 14:03:32,849 INFO L78 Accepts]: Start accepts. Automaton has 3714 states and 4713 transitions. Word has length 138 [2021-11-02 14:03:32,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:03:32,849 INFO L470 AbstractCegarLoop]: Abstraction has 3714 states and 4713 transitions. [2021-11-02 14:03:32,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:03:32,850 INFO L276 IsEmpty]: Start isEmpty. Operand 3714 states and 4713 transitions. [2021-11-02 14:03:32,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-02 14:03:32,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:03:32,851 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] [2021-11-02 14:03:32,879 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 14:03:33,063 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 14:03:33,063 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-02 14:03:33,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:03:33,064 INFO L85 PathProgramCache]: Analyzing trace with hash 917748154, now seen corresponding path program 1 times [2021-11-02 14:03:33,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:03:33,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212819823] [2021-11-02 14:03:33,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:03:33,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:03:33,132 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:03:33,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1761712531] [2021-11-02 14:03:33,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:03:33,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:03:33,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:03:33,133 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 14:03:33,134 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 14:03:33,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:03:33,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 3217 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 14:03:33,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:03:34,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:03:34,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:03:34,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:03:34,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212819823] [2021-11-02 14:03:34,611 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:03:34,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761712531] [2021-11-02 14:03:34,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761712531] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:03:34,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:03:34,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 14:03:34,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585790033] [2021-11-02 14:03:34,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 14:03:34,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:03:34,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 14:03:34,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 14:03:34,612 INFO L87 Difference]: Start difference. First operand 3714 states and 4713 transitions. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:03:36,657 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:03:41,451 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15